summaryrefslogtreecommitdiff
path: root/libs/assimp/code/AssetLib/LWO
diff options
context:
space:
mode:
authorsanine <sanine.not@pm.me>2022-04-16 11:55:09 -0500
committersanine <sanine.not@pm.me>2022-04-16 11:55:09 -0500
commitdb81b925d776103326128bf629cbdda576a223e7 (patch)
tree58bea8155c686733310009f6bed7363f91fbeb9d /libs/assimp/code/AssetLib/LWO
parent55860037b14fb3893ba21cf2654c83d349cc1082 (diff)
move 3rd-party librarys into libs/ and add built-in honeysuckle
Diffstat (limited to 'libs/assimp/code/AssetLib/LWO')
-rw-r--r--libs/assimp/code/AssetLib/LWO/LWOAnimation.cpp609
-rw-r--r--libs/assimp/code/AssetLib/LWO/LWOAnimation.h346
-rw-r--r--libs/assimp/code/AssetLib/LWO/LWOBLoader.cpp428
-rw-r--r--libs/assimp/code/AssetLib/LWO/LWOFileData.h638
-rw-r--r--libs/assimp/code/AssetLib/LWO/LWOLoader.cpp1422
-rw-r--r--libs/assimp/code/AssetLib/LWO/LWOLoader.h468
-rw-r--r--libs/assimp/code/AssetLib/LWO/LWOMaterial.cpp844
7 files changed, 4755 insertions, 0 deletions
diff --git a/libs/assimp/code/AssetLib/LWO/LWOAnimation.cpp b/libs/assimp/code/AssetLib/LWO/LWOAnimation.cpp
new file mode 100644
index 0000000..c2ee2d9
--- /dev/null
+++ b/libs/assimp/code/AssetLib/LWO/LWOAnimation.cpp
@@ -0,0 +1,609 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2022, assimp team
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the
+following conditions are met:
+
+* Redistributions of source code must retain the above
+ copyright notice, this list of conditions and the
+ following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+ copyright notice, this list of conditions and the
+ following disclaimer in the documentation and/or other
+ materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+ contributors may be used to endorse or promote products
+ derived from this software without specific prior
+ written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+
+/** @file LWOAnimation.cpp
+ * @brief LWOAnimationResolver utility class
+ *
+ * It's a very generic implementation of LightWave's system of
+ * component-wise-animated stuff. The one and only fully free
+ * implementation of LightWave envelopes of which I know.
+*/
+
+#if (!defined ASSIMP_BUILD_NO_LWO_IMPORTER) && (!defined ASSIMP_BUILD_NO_LWS_IMPORTER)
+
+#include <functional>
+
+// internal headers
+#include "LWOFileData.h"
+#include <assimp/anim.h>
+
+using namespace Assimp;
+using namespace Assimp::LWO;
+
+// ------------------------------------------------------------------------------------------------
+// Construct an animation resolver from a given list of envelopes
+AnimResolver::AnimResolver(std::list<Envelope> &_envelopes, double tick) :
+ envelopes(_envelopes),
+ sample_rate(0.),
+ envl_x(),
+ envl_y(),
+ envl_z(),
+ end_x(),
+ end_y(),
+ end_z(),
+ flags(),
+ sample_delta() {
+ trans_x = trans_y = trans_z = nullptr;
+ rotat_x = rotat_y = rotat_z = nullptr;
+ scale_x = scale_y = scale_z = nullptr;
+
+ first = last = 150392.;
+
+ // find transformation envelopes
+ for (std::list<LWO::Envelope>::iterator it = envelopes.begin(); it != envelopes.end(); ++it) {
+
+ (*it).old_first = 0;
+ (*it).old_last = (*it).keys.size() - 1;
+
+ if ((*it).keys.empty()) {
+ continue;
+ }
+ if ((int)(*it).type < 1 || (int)(*it).type>EnvelopeType_Unknown) {
+ continue;
+ }
+ switch ((*it).type) {
+ // translation
+ case LWO::EnvelopeType_Position_X:
+ trans_x = &*it;
+ break;
+ case LWO::EnvelopeType_Position_Y:
+ trans_y = &*it;
+ break;
+ case LWO::EnvelopeType_Position_Z:
+ trans_z = &*it;
+ break;
+
+ // rotation
+ case LWO::EnvelopeType_Rotation_Heading:
+ rotat_x = &*it;
+ break;
+ case LWO::EnvelopeType_Rotation_Pitch:
+ rotat_y = &*it;
+ break;
+ case LWO::EnvelopeType_Rotation_Bank:
+ rotat_z = &*it;
+ break;
+
+ // scaling
+ case LWO::EnvelopeType_Scaling_X:
+ scale_x = &*it;
+ break;
+ case LWO::EnvelopeType_Scaling_Y:
+ scale_y = &*it;
+ break;
+ case LWO::EnvelopeType_Scaling_Z:
+ scale_z = &*it;
+ break;
+ default:
+ continue;
+ };
+
+ // convert from seconds to ticks
+ for (std::vector<LWO::Key>::iterator d = (*it).keys.begin(); d != (*it).keys.end(); ++d)
+ (*d).time *= tick;
+
+ // set default animation range (minimum and maximum time value for which we have a keyframe)
+ first = std::min(first, (*it).keys.front().time);
+ last = std::max(last, (*it).keys.back().time);
+ }
+
+ // deferred setup of animation range to increase performance.
+ // typically the application will want to specify its own.
+ need_to_setup = true;
+}
+
+// ------------------------------------------------------------------------------------------------
+// Reset all envelopes to their original contents
+void AnimResolver::ClearAnimRangeSetup() {
+ for (std::list<LWO::Envelope>::iterator it = envelopes.begin(); it != envelopes.end(); ++it) {
+
+ (*it).keys.erase((*it).keys.begin(), (*it).keys.begin() + (*it).old_first);
+ (*it).keys.erase((*it).keys.begin() + (*it).old_last + 1, (*it).keys.end());
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+// Insert additional keys to match LWO's pre& post behaviors.
+void AnimResolver::UpdateAnimRangeSetup() {
+ // XXX doesn't work yet (hangs if more than one envelope channels needs to be interpolated)
+
+ for (std::list<LWO::Envelope>::iterator it = envelopes.begin(); it != envelopes.end(); ++it) {
+ if ((*it).keys.empty()) continue;
+
+ const double my_first = (*it).keys.front().time;
+ const double my_last = (*it).keys.back().time;
+
+ const double delta = my_last - my_first;
+ const size_t old_size = (*it).keys.size();
+
+ const float value_delta = (*it).keys.back().value - (*it).keys.front().value;
+
+ // NOTE: We won't handle reset, linear and constant here.
+ // See DoInterpolation() for their implementation.
+
+ // process pre behavior
+ switch ((*it).pre) {
+ case LWO::PrePostBehaviour_OffsetRepeat:
+ case LWO::PrePostBehaviour_Repeat:
+ case LWO::PrePostBehaviour_Oscillate: {
+ const double start_time = delta - std::fmod(my_first - first, delta);
+ std::vector<LWO::Key>::iterator n = std::find_if((*it).keys.begin(), (*it).keys.end(),
+ [start_time](double t) { return start_time > t; }),
+ m;
+
+ size_t ofs = 0;
+ if (n != (*it).keys.end()) {
+ // copy from here - don't use iterators, insert() would invalidate them
+ ofs = (*it).keys.end() - n;
+ (*it).keys.insert((*it).keys.begin(), ofs, LWO::Key());
+
+ std::copy((*it).keys.end() - ofs, (*it).keys.end(), (*it).keys.begin());
+ }
+
+ // do full copies. again, no iterators
+ const unsigned int num = (unsigned int)((my_first - first) / delta);
+ (*it).keys.resize((*it).keys.size() + num * old_size);
+
+ n = (*it).keys.begin() + ofs;
+ bool reverse = false;
+ for (unsigned int i = 0; i < num; ++i) {
+ m = n + old_size * (i + 1);
+ std::copy(n, n + old_size, m);
+ const bool res = ((*it).pre == LWO::PrePostBehaviour_Oscillate);
+ reverse = !reverse;
+ if (res && reverse) {
+ std::reverse(m, m + old_size - 1);
+ }
+ }
+
+ // update time values
+ n = (*it).keys.end() - (old_size + 1);
+ double cur_minus = delta;
+ unsigned int tt = 1;
+ for (const double tmp = delta * (num + 1); cur_minus <= tmp; cur_minus += delta, ++tt) {
+ m = (delta == tmp ? (*it).keys.begin() : n - (old_size + 1));
+ for (; m != n; --n) {
+ (*n).time -= cur_minus;
+
+ // offset repeat? add delta offset to key value
+ if ((*it).pre == LWO::PrePostBehaviour_OffsetRepeat) {
+ (*n).value += tt * value_delta;
+ }
+ }
+ }
+ break;
+ }
+ default:
+ // silence compiler warning
+ break;
+ }
+
+ // process post behavior
+ switch ((*it).post) {
+
+ case LWO::PrePostBehaviour_OffsetRepeat:
+ case LWO::PrePostBehaviour_Repeat:
+ case LWO::PrePostBehaviour_Oscillate:
+
+ break;
+
+ default:
+ // silence compiler warning
+ break;
+ }
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+// Extract bind pose matrix
+void AnimResolver::ExtractBindPose(aiMatrix4x4 &out) {
+ // If we have no envelopes, return identity
+ if (envelopes.empty()) {
+ out = aiMatrix4x4();
+ return;
+ }
+ aiVector3D angles, scaling(1.f, 1.f, 1.f), translation;
+
+ if (trans_x) translation.x = trans_x->keys[0].value;
+ if (trans_y) translation.y = trans_y->keys[0].value;
+ if (trans_z) translation.z = trans_z->keys[0].value;
+
+ if (rotat_x) angles.x = rotat_x->keys[0].value;
+ if (rotat_y) angles.y = rotat_y->keys[0].value;
+ if (rotat_z) angles.z = rotat_z->keys[0].value;
+
+ if (scale_x) scaling.x = scale_x->keys[0].value;
+ if (scale_y) scaling.y = scale_y->keys[0].value;
+ if (scale_z) scaling.z = scale_z->keys[0].value;
+
+ // build the final matrix
+ aiMatrix4x4 s, rx, ry, rz, t;
+ aiMatrix4x4::RotationZ(angles.z, rz);
+ aiMatrix4x4::RotationX(angles.y, rx);
+ aiMatrix4x4::RotationY(angles.x, ry);
+ aiMatrix4x4::Translation(translation, t);
+ aiMatrix4x4::Scaling(scaling, s);
+ out = t * ry * rx * rz * s;
+}
+
+// ------------------------------------------------------------------------------------------------
+// Do a single interpolation on a channel
+void AnimResolver::DoInterpolation(std::vector<LWO::Key>::const_iterator cur,
+ LWO::Envelope *envl, double time, float &fill) {
+ if (envl->keys.size() == 1) {
+ fill = envl->keys[0].value;
+ return;
+ }
+
+ // check whether we're at the beginning of the animation track
+ if (cur == envl->keys.begin()) {
+
+ // ok ... this depends on pre behaviour now
+ // we don't need to handle repeat&offset repeat&oszillate here, see UpdateAnimRangeSetup()
+ switch (envl->pre) {
+ case LWO::PrePostBehaviour_Linear:
+ DoInterpolation2(cur, cur + 1, time, fill);
+ return;
+
+ case LWO::PrePostBehaviour_Reset:
+ fill = 0.f;
+ return;
+
+ default: //case LWO::PrePostBehaviour_Constant:
+ fill = (*cur).value;
+ return;
+ }
+ }
+ // check whether we're at the end of the animation track
+ else if (cur == envl->keys.end() - 1 && time > envl->keys.rbegin()->time) {
+ // ok ... this depends on post behaviour now
+ switch (envl->post) {
+ case LWO::PrePostBehaviour_Linear:
+ DoInterpolation2(cur, cur - 1, time, fill);
+ return;
+
+ case LWO::PrePostBehaviour_Reset:
+ fill = 0.f;
+ return;
+
+ default: //case LWO::PrePostBehaviour_Constant:
+ fill = (*cur).value;
+ return;
+ }
+ }
+
+ // Otherwise do a simple interpolation
+ DoInterpolation2(cur - 1, cur, time, fill);
+}
+
+// ------------------------------------------------------------------------------------------------
+// Almost the same, except we won't handle pre/post conditions here
+void AnimResolver::DoInterpolation2(std::vector<LWO::Key>::const_iterator beg,
+ std::vector<LWO::Key>::const_iterator end, double time, float &fill) {
+ switch ((*end).inter) {
+
+ case LWO::IT_STEP:
+ // no interpolation at all - take the value of the last key
+ fill = (*beg).value;
+ return;
+ default:
+
+ // silence compiler warning
+ break;
+ }
+ // linear interpolation - default
+ double duration = (*end).time - (*beg).time;
+ if (duration > 0.0) {
+ fill = (*beg).value + ((*end).value - (*beg).value) * (float)(((time - (*beg).time) / duration));
+ } else {
+ fill = (*beg).value;
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+// Subsample animation track by given key values
+void AnimResolver::SubsampleAnimTrack(std::vector<aiVectorKey> & /*out*/,
+ double /*time*/, double /*sample_delta*/) {
+ //ai_assert(out.empty() && sample_delta);
+
+ //const double time_start = out.back().mTime;
+ // for ()
+}
+
+// ------------------------------------------------------------------------------------------------
+// Track interpolation
+void AnimResolver::InterpolateTrack(std::vector<aiVectorKey> &out, aiVectorKey &fill, double time) {
+ // subsample animation track?
+ if (flags & AI_LWO_ANIM_FLAG_SAMPLE_ANIMS) {
+ SubsampleAnimTrack(out, time, sample_delta);
+ }
+
+ fill.mTime = time;
+
+ // get x
+ if ((*cur_x).time == time) {
+ fill.mValue.x = (*cur_x).value;
+
+ if (cur_x != envl_x->keys.end() - 1) /* increment x */
+ ++cur_x;
+ else
+ end_x = true;
+ } else
+ DoInterpolation(cur_x, envl_x, time, (float &)fill.mValue.x);
+
+ // get y
+ if ((*cur_y).time == time) {
+ fill.mValue.y = (*cur_y).value;
+
+ if (cur_y != envl_y->keys.end() - 1) /* increment y */
+ ++cur_y;
+ else
+ end_y = true;
+ } else
+ DoInterpolation(cur_y, envl_y, time, (float &)fill.mValue.y);
+
+ // get z
+ if ((*cur_z).time == time) {
+ fill.mValue.z = (*cur_z).value;
+
+ if (cur_z != envl_z->keys.end() - 1) /* increment z */
+ ++cur_z;
+ else
+ end_x = true;
+ } else
+ DoInterpolation(cur_z, envl_z, time, (float &)fill.mValue.z);
+}
+
+// ------------------------------------------------------------------------------------------------
+// Build linearly subsampled keys from three single envelopes, one for each component (x,y,z)
+void AnimResolver::GetKeys(std::vector<aiVectorKey> &out,
+ LWO::Envelope *_envl_x,
+ LWO::Envelope *_envl_y,
+ LWO::Envelope *_envl_z,
+ unsigned int _flags) {
+ envl_x = _envl_x;
+ envl_y = _envl_y;
+ envl_z = _envl_z;
+ flags = _flags;
+
+ // generate default channels if none are given
+ LWO::Envelope def_x, def_y, def_z;
+ LWO::Key key_dummy;
+ key_dummy.time = 0.f;
+ if ((envl_x && envl_x->type == LWO::EnvelopeType_Scaling_X) ||
+ (envl_y && envl_y->type == LWO::EnvelopeType_Scaling_Y) ||
+ (envl_z && envl_z->type == LWO::EnvelopeType_Scaling_Z)) {
+ key_dummy.value = 1.f;
+ } else
+ key_dummy.value = 0.f;
+
+ if (!envl_x) {
+ envl_x = &def_x;
+ envl_x->keys.push_back(key_dummy);
+ }
+ if (!envl_y) {
+ envl_y = &def_y;
+ envl_y->keys.push_back(key_dummy);
+ }
+ if (!envl_z) {
+ envl_z = &def_z;
+ envl_z->keys.push_back(key_dummy);
+ }
+
+ // guess how many keys we'll get
+ size_t reserve;
+ double sr = 1.;
+ if (flags & AI_LWO_ANIM_FLAG_SAMPLE_ANIMS) {
+ if (!sample_rate)
+ sr = 100.f;
+ else
+ sr = sample_rate;
+ sample_delta = 1.f / sr;
+
+ reserve = (size_t)(
+ std::max(envl_x->keys.rbegin()->time,
+ std::max(envl_y->keys.rbegin()->time, envl_z->keys.rbegin()->time)) *
+ sr);
+ } else
+ reserve = std::max(envl_x->keys.size(), std::max(envl_x->keys.size(), envl_z->keys.size()));
+ out.reserve(reserve + (reserve >> 1));
+
+ // Iterate through all three arrays at once - it's tricky, but
+ // rather interesting to implement.
+ cur_x = envl_x->keys.begin();
+ cur_y = envl_y->keys.begin();
+ cur_z = envl_z->keys.begin();
+
+ end_x = end_y = end_z = false;
+ while (1) {
+
+ aiVectorKey fill;
+
+ if ((*cur_x).time == (*cur_y).time && (*cur_x).time == (*cur_z).time) {
+
+ // we have a keyframe for all of them defined .. this means
+ // we don't need to interpolate here.
+ fill.mTime = (*cur_x).time;
+
+ fill.mValue.x = (*cur_x).value;
+ fill.mValue.y = (*cur_y).value;
+ fill.mValue.z = (*cur_z).value;
+
+ // subsample animation track
+ if (flags & AI_LWO_ANIM_FLAG_SAMPLE_ANIMS) {
+ //SubsampleAnimTrack(out,cur_x, cur_y, cur_z, d, sample_delta);
+ }
+ }
+
+ // Find key with lowest time value
+ else if ((*cur_x).time <= (*cur_y).time && !end_x) {
+
+ if ((*cur_z).time <= (*cur_x).time && !end_z) {
+ InterpolateTrack(out, fill, (*cur_z).time);
+ } else {
+ InterpolateTrack(out, fill, (*cur_x).time);
+ }
+ } else if ((*cur_z).time <= (*cur_y).time && !end_y) {
+ InterpolateTrack(out, fill, (*cur_y).time);
+ } else if (!end_y) {
+ // welcome on the server, y
+ InterpolateTrack(out, fill, (*cur_y).time);
+ } else {
+ // we have reached the end of at least 2 channels,
+ // only one is remaining. Extrapolate the 2.
+ if (end_y) {
+ InterpolateTrack(out, fill, (end_x ? (*cur_z) : (*cur_x)).time);
+ } else if (end_x) {
+ InterpolateTrack(out, fill, (end_z ? (*cur_y) : (*cur_z)).time);
+ } else { // if (end_z)
+ InterpolateTrack(out, fill, (end_y ? (*cur_x) : (*cur_y)).time);
+ }
+ }
+ double lasttime = fill.mTime;
+ out.push_back(fill);
+
+ if (lasttime >= (*cur_x).time) {
+ if (cur_x != envl_x->keys.end() - 1)
+ ++cur_x;
+ else
+ end_x = true;
+ }
+ if (lasttime >= (*cur_y).time) {
+ if (cur_y != envl_y->keys.end() - 1)
+ ++cur_y;
+ else
+ end_y = true;
+ }
+ if (lasttime >= (*cur_z).time) {
+ if (cur_z != envl_z->keys.end() - 1)
+ ++cur_z;
+ else
+ end_z = true;
+ }
+
+ if (end_x && end_y && end_z) /* finished? */
+ break;
+ }
+
+ if (flags & AI_LWO_ANIM_FLAG_START_AT_ZERO) {
+ for (std::vector<aiVectorKey>::iterator it = out.begin(); it != out.end(); ++it)
+ (*it).mTime -= first;
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+// Extract animation channel
+void AnimResolver::ExtractAnimChannel(aiNodeAnim **out, unsigned int /*= 0*/) {
+ *out = nullptr;
+
+ //FIXME: crashes if more than one component is animated at different timings, to be resolved.
+
+ // If we have no envelopes, return nullptr
+ if (envelopes.empty()) {
+ return;
+ }
+
+ // We won't spawn an animation channel if we don't have at least one envelope with more than one keyframe defined.
+ const bool trans = ((trans_x && trans_x->keys.size() > 1) || (trans_y && trans_y->keys.size() > 1) || (trans_z && trans_z->keys.size() > 1));
+ const bool rotat = ((rotat_x && rotat_x->keys.size() > 1) || (rotat_y && rotat_y->keys.size() > 1) || (rotat_z && rotat_z->keys.size() > 1));
+ const bool scale = ((scale_x && scale_x->keys.size() > 1) || (scale_y && scale_y->keys.size() > 1) || (scale_z && scale_z->keys.size() > 1));
+ if (!trans && !rotat && !scale)
+ return;
+
+ // Allocate the output animation
+ aiNodeAnim *anim = *out = new aiNodeAnim();
+
+ // Setup default animation setup if necessary
+ if (need_to_setup) {
+ UpdateAnimRangeSetup();
+ need_to_setup = false;
+ }
+
+ // copy translation keys
+ if (trans) {
+ std::vector<aiVectorKey> keys;
+ GetKeys(keys, trans_x, trans_y, trans_z, flags);
+
+ anim->mPositionKeys = new aiVectorKey[anim->mNumPositionKeys = static_cast<unsigned int>(keys.size())];
+ std::copy(keys.begin(), keys.end(), anim->mPositionKeys);
+ }
+
+ // copy rotation keys
+ if (rotat) {
+ std::vector<aiVectorKey> keys;
+ GetKeys(keys, rotat_x, rotat_y, rotat_z, flags);
+
+ anim->mRotationKeys = new aiQuatKey[anim->mNumRotationKeys = static_cast<unsigned int>(keys.size())];
+
+ // convert heading, pitch, bank to quaternion
+ // mValue.x=Heading=Rot(Y), mValue.y=Pitch=Rot(X), mValue.z=Bank=Rot(Z)
+ // Lightwave's rotation order is ZXY
+ aiVector3D X(1.0, 0.0, 0.0);
+ aiVector3D Y(0.0, 1.0, 0.0);
+ aiVector3D Z(0.0, 0.0, 1.0);
+ for (unsigned int i = 0; i < anim->mNumRotationKeys; ++i) {
+ aiQuatKey &qk = anim->mRotationKeys[i];
+ qk.mTime = keys[i].mTime;
+ qk.mValue = aiQuaternion(Y, keys[i].mValue.x) * aiQuaternion(X, keys[i].mValue.y) * aiQuaternion(Z, keys[i].mValue.z);
+ }
+ }
+
+ // copy scaling keys
+ if (scale) {
+ std::vector<aiVectorKey> keys;
+ GetKeys(keys, scale_x, scale_y, scale_z, flags);
+
+ anim->mScalingKeys = new aiVectorKey[anim->mNumScalingKeys = static_cast<unsigned int>(keys.size())];
+ std::copy(keys.begin(), keys.end(), anim->mScalingKeys);
+ }
+}
+
+#endif // no lwo or no lws
diff --git a/libs/assimp/code/AssetLib/LWO/LWOAnimation.h b/libs/assimp/code/AssetLib/LWO/LWOAnimation.h
new file mode 100644
index 0000000..1e419d4
--- /dev/null
+++ b/libs/assimp/code/AssetLib/LWO/LWOAnimation.h
@@ -0,0 +1,346 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2022, assimp team
+
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the
+following conditions are met:
+
+* Redistributions of source code must retain the above
+ copyright notice, this list of conditions and the
+ following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+ copyright notice, this list of conditions and the
+ following disclaimer in the documentation and/or other
+ materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+ contributors may be used to endorse or promote products
+ derived from this software without specific prior
+ written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+
+/** @file LWOAnimation.h
+ * @brief LWOAnimationResolver utility class
+ *
+ * This is for all lightwave-related file format, not only LWO.
+ * LWS isthe main purpose.
+*/
+#ifndef AI_LWO_ANIMATION_INCLUDED
+#define AI_LWO_ANIMATION_INCLUDED
+
+//
+#include <vector>
+#include <list>
+
+struct aiNodeAnim;
+struct aiVectorKey;
+
+namespace Assimp {
+namespace LWO {
+
+// ---------------------------------------------------------------------------
+/** \brief List of recognized LWO envelopes
+ */
+enum EnvelopeType
+{
+ EnvelopeType_Position_X = 0x1,
+ EnvelopeType_Position_Y = 0x2,
+ EnvelopeType_Position_Z = 0x3,
+
+ EnvelopeType_Rotation_Heading = 0x4,
+ EnvelopeType_Rotation_Pitch = 0x5,
+ EnvelopeType_Rotation_Bank = 0x6,
+
+ EnvelopeType_Scaling_X = 0x7,
+ EnvelopeType_Scaling_Y = 0x8,
+ EnvelopeType_Scaling_Z = 0x9,
+
+ // -- currently not yet handled
+ EnvelopeType_Color_R = 0xa,
+ EnvelopeType_Color_G = 0xb,
+ EnvelopeType_Color_B = 0xc,
+
+ EnvelopeType_Falloff_X = 0xd,
+ EnvelopeType_Falloff_Y = 0xe,
+ EnvelopeType_Falloff_Z = 0xf,
+
+ EnvelopeType_Unknown
+};
+
+// ---------------------------------------------------------------------------
+/** \brief List of recognized LWO interpolation modes
+ */
+enum InterpolationType
+{
+ IT_STEP, IT_LINE, IT_TCB, IT_HERM, IT_BEZI, IT_BEZ2
+};
+
+
+// ---------------------------------------------------------------------------
+/** \brief List of recognized LWO pre or post range behaviours
+ */
+enum PrePostBehaviour
+{
+ PrePostBehaviour_Reset = 0x0,
+ PrePostBehaviour_Constant = 0x1,
+ PrePostBehaviour_Repeat = 0x2,
+ PrePostBehaviour_Oscillate = 0x3,
+ PrePostBehaviour_OffsetRepeat = 0x4,
+ PrePostBehaviour_Linear = 0x5
+};
+
+// ---------------------------------------------------------------------------
+/** \brief Data structure for a LWO animation keyframe
+ */
+struct Key {
+ Key() AI_NO_EXCEPT
+ : time()
+ , value()
+ , inter(IT_LINE)
+ , params() {
+ // empty
+ }
+
+ //! Current time
+ double time;
+
+ //! Current value
+ float value;
+
+ //! How to interpolate this key with previous key?
+ InterpolationType inter;
+
+ //! Interpolation parameters
+ float params[5];
+
+
+ // for std::find()
+ operator double () {
+ return time;
+ }
+};
+
+// ---------------------------------------------------------------------------
+/** \brief Data structure for a LWO animation envelope
+ */
+struct Envelope {
+ Envelope() AI_NO_EXCEPT
+ : index()
+ , type(EnvelopeType_Unknown)
+ , pre(PrePostBehaviour_Constant)
+ , post(PrePostBehaviour_Constant)
+ , old_first(0)
+ , old_last(0) {
+ // empty
+ }
+
+ //! Index of this envelope
+ unsigned int index;
+
+ //! Type of envelope
+ EnvelopeType type;
+
+ //! Pre- and post-behavior
+ PrePostBehaviour pre,post;
+
+ //! Keyframes for this envelope
+ std::vector<Key> keys;
+
+ // temporary data for AnimResolver
+ size_t old_first,old_last;
+};
+
+// ---------------------------------------------------------------------------
+//! @def AI_LWO_ANIM_FLAG_SAMPLE_ANIMS
+//! Flag for AnimResolver, subsamples the input data with the rate specified
+//! by AnimResolver::SetSampleRate().
+#define AI_LWO_ANIM_FLAG_SAMPLE_ANIMS 0x1
+
+
+// ---------------------------------------------------------------------------
+//! @def AI_LWO_ANIM_FLAG_START_AT_ZERO
+//! Flag for AnimResolver, ensures that the animations starts at zero.
+#define AI_LWO_ANIM_FLAG_START_AT_ZERO 0x2
+
+// ---------------------------------------------------------------------------
+/** @brief Utility class to build Assimp animations from LWO envelopes.
+ *
+ * Used for both LWO and LWS (MOT also).
+ */
+class AnimResolver
+{
+public:
+
+ // ------------------------------------------------------------------
+ /** @brief Construct an AnimResolver from a given list of envelopes
+ * @param envelopes Input envelopes. May be empty.
+ * @param Output tick rate, per second
+ * @note The input envelopes are possibly modified.
+ */
+ AnimResolver(std::list<Envelope>& envelopes, double tick);
+
+public:
+
+ // ------------------------------------------------------------------
+ /** @brief Extract the bind-pose transformation matrix.
+ * @param out Receives bind-pose transformation matrix
+ */
+ void ExtractBindPose(aiMatrix4x4& out);
+
+ // ------------------------------------------------------------------
+ /** @brief Extract a node animation channel
+ * @param out Receives a pointer to a newly allocated node anim.
+ * If there's just one keyframe defined, *out is set to nullptr and
+ * no animation channel is computed.
+ * @param flags Any combination of the AI_LWO_ANIM_FLAG_XXX flags.
+ */
+ void ExtractAnimChannel(aiNodeAnim** out, unsigned int flags = 0);
+
+
+ // ------------------------------------------------------------------
+ /** @brief Set the sampling rate for ExtractAnimChannel().
+ *
+ * Non-linear interpolations are subsampled with this rate (keys
+ * per second). Closer sampling positions, if existent, are kept.
+ * The sampling rate defaults to 0, if this value is not changed and
+ * AI_LWO_ANIM_FLAG_SAMPLE_ANIMS is specified for ExtractAnimChannel(),
+ * the class finds a suitable sample rate by itself.
+ */
+ void SetSampleRate(double sr) {
+ sample_rate = sr;
+ }
+
+ // ------------------------------------------------------------------
+ /** @brief Getter for SetSampleRate()
+ */
+ double GetSampleRate() const {
+ return sample_rate;
+ }
+
+ // ------------------------------------------------------------------
+ /** @brief Set the animation time range
+ *
+ * @param first Time where the animation starts, in ticks
+ * @param last Time where the animation ends, in ticks
+ */
+ void SetAnimationRange(double _first, double _last) {
+ first = _first;
+ last = _last;
+
+ ClearAnimRangeSetup();
+ UpdateAnimRangeSetup();
+ }
+
+protected:
+
+ // ------------------------------------------------------------------
+ /** @brief Build linearly subsampled keys from 3 single envelopes
+ * @param out Receives output keys
+ * @param envl_x X-component envelope
+ * @param envl_y Y-component envelope
+ * @param envl_z Z-component envelope
+ * @param flags Any combination of the AI_LWO_ANIM_FLAG_XXX flags.
+ * @note Up to two input envelopes may be nullptr
+ */
+ void GetKeys(std::vector<aiVectorKey>& out,
+ LWO::Envelope* envl_x,
+ LWO::Envelope* envl_y,
+ LWO::Envelope* envl_z,
+ unsigned int flags);
+
+ // ------------------------------------------------------------------
+ /** @brief Resolve a single animation key by applying the right
+ * interpolation to it.
+ * @param cur Current key
+ * @param envl Envelope working on
+ * @param time time to be interpolated
+ * @param fill Receives the interpolated output value.
+ */
+ void DoInterpolation(std::vector<LWO::Key>::const_iterator cur,
+ LWO::Envelope* envl,double time, float& fill);
+
+ // ------------------------------------------------------------------
+ /** @brief Almost the same, except we won't handle pre/post
+ * conditions here.
+ * @see DoInterpolation
+ */
+ void DoInterpolation2(std::vector<LWO::Key>::const_iterator beg,
+ std::vector<LWO::Key>::const_iterator end,double time, float& fill);
+
+ // ------------------------------------------------------------------
+ /** @brief Interpolate 2 tracks if one is given
+ *
+ * @param out Receives extra output keys
+ * @param key_out Primary output key
+ * @param time Time to interpolate for
+ */
+ void InterpolateTrack(std::vector<aiVectorKey>& out,
+ aiVectorKey& key_out,double time);
+
+ // ------------------------------------------------------------------
+ /** @brief Subsample an animation track by a given sampling rate
+ *
+ * @param out Receives output keys. Last key at input defines the
+ * time where subsampling starts.
+ * @param time Time to end subsampling at
+ * @param sample_delta Time delta between two samples
+ */
+ void SubsampleAnimTrack(std::vector<aiVectorKey>& out,
+ double time,double sample_delta);
+
+ // ------------------------------------------------------------------
+ /** @brief Delete all keys which we inserted to match anim setup
+ */
+ void ClearAnimRangeSetup();
+
+ // ------------------------------------------------------------------
+ /** @brief Insert extra keys to match LWO's pre and post behaviours
+ * in a given time range [first...last]
+ */
+ void UpdateAnimRangeSetup();
+
+private:
+ std::list<Envelope>& envelopes;
+ double sample_rate;
+
+ LWO::Envelope* trans_x, *trans_y, *trans_z;
+ LWO::Envelope* rotat_x, *rotat_y, *rotat_z;
+ LWO::Envelope* scale_x, *scale_y, *scale_z;
+
+ double first, last;
+ bool need_to_setup;
+
+ // temporary storage
+ LWO::Envelope* envl_x, * envl_y, * envl_z;
+ std::vector<LWO::Key>::const_iterator cur_x,cur_y,cur_z;
+ bool end_x, end_y, end_z;
+
+ unsigned int flags;
+ double sample_delta;
+};
+
+} // end namespace LWO
+} // end namespace Assimp
+
+#endif // !! AI_LWO_ANIMATION_INCLUDED
diff --git a/libs/assimp/code/AssetLib/LWO/LWOBLoader.cpp b/libs/assimp/code/AssetLib/LWO/LWOBLoader.cpp
new file mode 100644
index 0000000..1fbd9b9
--- /dev/null
+++ b/libs/assimp/code/AssetLib/LWO/LWOBLoader.cpp
@@ -0,0 +1,428 @@
+/*
+---------------------------------------------------------------------------
+Open Asset Import Library (assimp)
+---------------------------------------------------------------------------
+
+Copyright (c) 2006-2022, assimp team
+
+
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the following
+conditions are met:
+
+* Redistributions of source code must retain the above
+ copyright notice, this list of conditions and the
+ following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+ copyright notice, this list of conditions and the
+ following disclaimer in the documentation and/or other
+ materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+ contributors may be used to endorse or promote products
+ derived from this software without specific prior
+ written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+---------------------------------------------------------------------------
+*/
+
+/** @file Implementation of the LWO importer class for the older LWOB
+ file formats, including materials */
+
+
+#ifndef ASSIMP_BUILD_NO_LWO_IMPORTER
+
+// Internal headers
+#include "LWOLoader.h"
+using namespace Assimp;
+
+
+// ------------------------------------------------------------------------------------------------
+void LWOImporter::LoadLWOBFile()
+{
+ LE_NCONST uint8_t* const end = mFileBuffer + fileSize;
+ bool running = true;
+ while (running)
+ {
+ if (mFileBuffer + sizeof(IFF::ChunkHeader) > end)break;
+ const IFF::ChunkHeader head = IFF::LoadChunk(mFileBuffer);
+
+ if (mFileBuffer + head.length > end)
+ {
+ throw DeadlyImportError("LWOB: Invalid chunk length");
+ break;
+ }
+ uint8_t* const next = mFileBuffer+head.length;
+ switch (head.type)
+ {
+ // vertex list
+ case AI_LWO_PNTS:
+ {
+ if (!mCurLayer->mTempPoints.empty())
+ ASSIMP_LOG_WARN("LWO: PNTS chunk encountered twice");
+ else LoadLWOPoints(head.length);
+ break;
+ }
+ // face list
+ case AI_LWO_POLS:
+ {
+
+ if (!mCurLayer->mFaces.empty())
+ ASSIMP_LOG_WARN("LWO: POLS chunk encountered twice");
+ else LoadLWOBPolygons(head.length);
+ break;
+ }
+ // list of tags
+ case AI_LWO_SRFS:
+ {
+ if (!mTags->empty())
+ ASSIMP_LOG_WARN("LWO: SRFS chunk encountered twice");
+ else LoadLWOTags(head.length);
+ break;
+ }
+
+ // surface chunk
+ case AI_LWO_SURF:
+ {
+ LoadLWOBSurface(head.length);
+ break;
+ }
+ }
+ mFileBuffer = next;
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+void LWOImporter::LoadLWOBPolygons(unsigned int length)
+{
+ // first find out how many faces and vertices we'll finally need
+ LE_NCONST uint16_t* const end = (LE_NCONST uint16_t*)(mFileBuffer+length);
+ LE_NCONST uint16_t* cursor = (LE_NCONST uint16_t*)mFileBuffer;
+
+ // perform endianness conversions
+#ifndef AI_BUILD_BIG_ENDIAN
+ while (cursor < end)ByteSwap::Swap2(cursor++);
+ cursor = (LE_NCONST uint16_t*)mFileBuffer;
+#endif
+
+ unsigned int iNumFaces = 0,iNumVertices = 0;
+ CountVertsAndFacesLWOB(iNumVertices,iNumFaces,cursor,end);
+
+ // allocate the output array and copy face indices
+ if (iNumFaces)
+ {
+ cursor = (LE_NCONST uint16_t*)mFileBuffer;
+
+ mCurLayer->mFaces.resize(iNumFaces);
+ FaceList::iterator it = mCurLayer->mFaces.begin();
+ CopyFaceIndicesLWOB(it,cursor,end);
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+void LWOImporter::CountVertsAndFacesLWOB(unsigned int& verts, unsigned int& faces,
+ LE_NCONST uint16_t*& cursor, const uint16_t* const end, unsigned int max)
+{
+ while (cursor < end && max--)
+ {
+ uint16_t numIndices;
+ // must have 2 shorts left for numIndices and surface
+ if (end - cursor < 2) {
+ throw DeadlyImportError("LWOB: Unexpected end of file");
+ }
+ ::memcpy(&numIndices, cursor++, 2);
+ // must have enough left for indices and surface
+ if (end - cursor < (1 + numIndices)) {
+ throw DeadlyImportError("LWOB: Unexpected end of file");
+ }
+ verts += numIndices;
+ faces++;
+ cursor += numIndices;
+ int16_t surface;
+ ::memcpy(&surface, cursor++, 2);
+ if (surface < 0)
+ {
+ // there are detail polygons
+ ::memcpy(&numIndices, cursor++, 2);
+ CountVertsAndFacesLWOB(verts,faces,cursor,end,numIndices);
+ }
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+void LWOImporter::CopyFaceIndicesLWOB(FaceList::iterator& it,
+ LE_NCONST uint16_t*& cursor,
+ const uint16_t* const end,
+ unsigned int max)
+{
+ while (cursor < end && max--)
+ {
+ LWO::Face& face = *it;++it;
+ uint16_t numIndices;
+ ::memcpy(&numIndices, cursor++, 2);
+ face.mNumIndices = numIndices;
+ if(face.mNumIndices)
+ {
+ if (cursor + face.mNumIndices >= end)
+ {
+ break;
+ }
+ face.mIndices = new unsigned int[face.mNumIndices];
+ for (unsigned int i = 0; i < face.mNumIndices;++i) {
+ unsigned int & mi = face.mIndices[i];
+ uint16_t index;
+ ::memcpy(&index, cursor++, 2);
+ mi = index;
+ if (mi > mCurLayer->mTempPoints.size())
+ {
+ ASSIMP_LOG_WARN("LWOB: face index is out of range");
+ mi = (unsigned int)mCurLayer->mTempPoints.size()-1;
+ }
+ }
+ } else {
+ ASSIMP_LOG_WARN("LWOB: Face has 0 indices");
+ }
+ int16_t surface;
+ ::memcpy(&surface, cursor++, 2);
+ if (surface < 0)
+ {
+ surface = -surface;
+
+ // there are detail polygons.
+ uint16_t numPolygons;
+ ::memcpy(&numPolygons, cursor++, 2);
+ if (cursor < end)
+ {
+ CopyFaceIndicesLWOB(it,cursor,end,numPolygons);
+ }
+ }
+ face.surfaceIndex = surface-1;
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+LWO::Texture* LWOImporter::SetupNewTextureLWOB(LWO::TextureList& list,unsigned int size)
+{
+ list.push_back(LWO::Texture());
+ LWO::Texture* tex = &list.back();
+
+ std::string type;
+ GetS0(type,size);
+ const char* s = type.c_str();
+
+ if(strstr(s, "Image Map"))
+ {
+ // Determine mapping type
+ if(strstr(s, "Planar"))
+ tex->mapMode = LWO::Texture::Planar;
+ else if(strstr(s, "Cylindrical"))
+ tex->mapMode = LWO::Texture::Cylindrical;
+ else if(strstr(s, "Spherical"))
+ tex->mapMode = LWO::Texture::Spherical;
+ else if(strstr(s, "Cubic"))
+ tex->mapMode = LWO::Texture::Cubic;
+ else if(strstr(s, "Front"))
+ tex->mapMode = LWO::Texture::FrontProjection;
+ }
+ else
+ {
+ // procedural or gradient, not supported
+ ASSIMP_LOG_ERROR("LWOB: Unsupported legacy texture: ", type);
+ }
+
+ return tex;
+}
+
+// ------------------------------------------------------------------------------------------------
+void LWOImporter::LoadLWOBSurface(unsigned int size)
+{
+ LE_NCONST uint8_t* const end = mFileBuffer + size;
+
+ mSurfaces->push_back( LWO::Surface () );
+ LWO::Surface& surf = mSurfaces->back();
+ LWO::Texture *pTex = nullptr;
+
+ GetS0(surf.mName,size);
+ bool running = true;
+ while (running) {
+ if (mFileBuffer + 6 >= end)
+ break;
+
+ IFF::SubChunkHeader head = IFF::LoadSubChunk(mFileBuffer);
+
+ /* A single test file (sonycam.lwo) seems to have invalid surface chunks.
+ * I'm assuming it's the fault of a single, unknown exporter so there are
+ * probably THOUSANDS of them. Here's a dirty workaround:
+ *
+ * We don't break if the chunk limit is exceeded. Instead, we're computing
+ * how much storage is actually left and work with this value from now on.
+ */
+ if (mFileBuffer + head.length > end) {
+ ASSIMP_LOG_ERROR("LWOB: Invalid surface chunk length. Trying to continue.");
+ head.length = (uint16_t) (end - mFileBuffer);
+ }
+
+ uint8_t* const next = mFileBuffer+head.length;
+ switch (head.type)
+ {
+ // diffuse color
+ case AI_LWO_COLR:
+ {
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length,COLR,3);
+ surf.mColor.r = GetU1() / 255.0f;
+ surf.mColor.g = GetU1() / 255.0f;
+ surf.mColor.b = GetU1() / 255.0f;
+ break;
+ }
+ // diffuse strength ...
+ case AI_LWO_DIFF:
+ {
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length,DIFF,2);
+ surf.mDiffuseValue = GetU2() / 255.0f;
+ break;
+ }
+ // specular strength ...
+ case AI_LWO_SPEC:
+ {
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length,SPEC,2);
+ surf.mSpecularValue = GetU2() / 255.0f;
+ break;
+ }
+ // luminosity ...
+ case AI_LWO_LUMI:
+ {
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length,LUMI,2);
+ surf.mLuminosity = GetU2() / 255.0f;
+ break;
+ }
+ // transparency
+ case AI_LWO_TRAN:
+ {
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length,TRAN,2);
+ surf.mTransparency = GetU2() / 255.0f;
+ break;
+ }
+ // surface flags
+ case AI_LWO_FLAG:
+ {
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length,FLAG,2);
+ uint16_t flag = GetU2();
+ if (flag & 0x4 ) surf.mMaximumSmoothAngle = 1.56207f;
+ if (flag & 0x8 ) surf.mColorHighlights = 1.f;
+ if (flag & 0x100) surf.bDoubleSided = true;
+ break;
+ }
+ // maximum smoothing angle
+ case AI_LWO_SMAN:
+ {
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length,SMAN,4);
+ surf.mMaximumSmoothAngle = std::fabs( GetF4() );
+ break;
+ }
+ // glossiness
+ case AI_LWO_GLOS:
+ {
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length,GLOS,2);
+ surf.mGlossiness = (float)GetU2();
+ break;
+ }
+ // color texture
+ case AI_LWO_CTEX:
+ {
+ pTex = SetupNewTextureLWOB(surf.mColorTextures,
+ head.length);
+ break;
+ }
+ // diffuse texture
+ case AI_LWO_DTEX:
+ {
+ pTex = SetupNewTextureLWOB(surf.mDiffuseTextures,
+ head.length);
+ break;
+ }
+ // specular texture
+ case AI_LWO_STEX:
+ {
+ pTex = SetupNewTextureLWOB(surf.mSpecularTextures,
+ head.length);
+ break;
+ }
+ // bump texture
+ case AI_LWO_BTEX:
+ {
+ pTex = SetupNewTextureLWOB(surf.mBumpTextures,
+ head.length);
+ break;
+ }
+ // transparency texture
+ case AI_LWO_TTEX:
+ {
+ pTex = SetupNewTextureLWOB(surf.mOpacityTextures,
+ head.length);
+ break;
+ }
+ // texture path
+ case AI_LWO_TIMG:
+ {
+ if (pTex) {
+ GetS0(pTex->mFileName,head.length);
+ } else {
+ ASSIMP_LOG_WARN("LWOB: Unexpected TIMG chunk");
+ }
+ break;
+ }
+ // texture strength
+ case AI_LWO_TVAL:
+ {
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length,TVAL,1);
+ if (pTex) {
+ pTex->mStrength = (float)GetU1()/ 255.f;
+ } else {
+ ASSIMP_LOG_ERROR("LWOB: Unexpected TVAL chunk");
+ }
+ break;
+ }
+ // texture flags
+ case AI_LWO_TFLG:
+ {
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length,TFLG,2);
+
+ if (nullptr != pTex) {
+ const uint16_t s = GetU2();
+ if (s & 1)
+ pTex->majorAxis = LWO::Texture::AXIS_X;
+ else if (s & 2)
+ pTex->majorAxis = LWO::Texture::AXIS_Y;
+ else if (s & 4)
+ pTex->majorAxis = LWO::Texture::AXIS_Z;
+
+ if (s & 16) {
+ ASSIMP_LOG_WARN("LWOB: Ignoring \'negate\' flag on texture");
+ }
+ }
+ else {
+ ASSIMP_LOG_WARN("LWOB: Unexpected TFLG chunk");
+ }
+ break;
+ }
+ }
+ mFileBuffer = next;
+ }
+}
+
+#endif // !! ASSIMP_BUILD_NO_LWO_IMPORTER
diff --git a/libs/assimp/code/AssetLib/LWO/LWOFileData.h b/libs/assimp/code/AssetLib/LWO/LWOFileData.h
new file mode 100644
index 0000000..f477f58
--- /dev/null
+++ b/libs/assimp/code/AssetLib/LWO/LWOFileData.h
@@ -0,0 +1,638 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2022, assimp team
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the
+following conditions are met:
+
+* Redistributions of source code must retain the above
+ copyright notice, this list of conditions and the
+ following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+ copyright notice, this list of conditions and the
+ following disclaimer in the documentation and/or other
+ materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+ contributors may be used to endorse or promote products
+ derived from this software without specific prior
+ written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+
+/** @file LWOFileData.h
+ * @brief Defines chunk constants used by the LWO file format
+
+The chunks are taken from the official LightWave SDK headers.
+
+*/
+#ifndef AI_LWO_FILEDATA_INCLUDED
+#define AI_LWO_FILEDATA_INCLUDED
+
+// STL headers
+#include <list>
+#include <vector>
+
+// public ASSIMP headers
+#include <assimp/mesh.h>
+
+// internal headers
+#include "AssetLib/LWO/LWOAnimation.h"
+#include "Common/IFF.h"
+
+namespace Assimp {
+namespace LWO {
+
+#define AI_LWO_FOURCC_LWOB AI_IFF_FOURCC('L', 'W', 'O', 'B')
+#define AI_LWO_FOURCC_LWO2 AI_IFF_FOURCC('L', 'W', 'O', '2')
+#define AI_LWO_FOURCC_LXOB AI_IFF_FOURCC('L', 'X', 'O', 'B')
+
+// chunks specific to the LWOB format
+#define AI_LWO_SRFS AI_IFF_FOURCC('S', 'R', 'F', 'S')
+#define AI_LWO_FLAG AI_IFF_FOURCC('F', 'L', 'A', 'G')
+#define AI_LWO_VLUM AI_IFF_FOURCC('V', 'L', 'U', 'M')
+#define AI_LWO_VDIF AI_IFF_FOURCC('V', 'D', 'I', 'F')
+#define AI_LWO_VSPC AI_IFF_FOURCC('V', 'S', 'P', 'C')
+#define AI_LWO_RFLT AI_IFF_FOURCC('R', 'F', 'L', 'T')
+#define AI_LWO_BTEX AI_IFF_FOURCC('B', 'T', 'E', 'X')
+#define AI_LWO_CTEX AI_IFF_FOURCC('C', 'T', 'E', 'X')
+#define AI_LWO_DTEX AI_IFF_FOURCC('D', 'T', 'E', 'X')
+#define AI_LWO_LTEX AI_IFF_FOURCC('L', 'T', 'E', 'X')
+#define AI_LWO_RTEX AI_IFF_FOURCC('R', 'T', 'E', 'X')
+#define AI_LWO_STEX AI_IFF_FOURCC('S', 'T', 'E', 'X')
+#define AI_LWO_TTEX AI_IFF_FOURCC('T', 'T', 'E', 'X')
+#define AI_LWO_TFLG AI_IFF_FOURCC('T', 'F', 'L', 'G')
+#define AI_LWO_TSIZ AI_IFF_FOURCC('T', 'S', 'I', 'Z')
+#define AI_LWO_TCTR AI_IFF_FOURCC('T', 'C', 'T', 'R')
+#define AI_LWO_TFAL AI_IFF_FOURCC('T', 'F', 'A', 'L')
+#define AI_LWO_TVEL AI_IFF_FOURCC('T', 'V', 'E', 'L')
+#define AI_LWO_TCLR AI_IFF_FOURCC('T', 'C', 'L', 'R')
+#define AI_LWO_TVAL AI_IFF_FOURCC('T', 'V', 'A', 'L')
+#define AI_LWO_TAMP AI_IFF_FOURCC('T', 'A', 'M', 'P')
+#define AI_LWO_TIMG AI_IFF_FOURCC('T', 'I', 'M', 'G')
+#define AI_LWO_TAAS AI_IFF_FOURCC('T', 'A', 'A', 'S')
+#define AI_LWO_TREF AI_IFF_FOURCC('T', 'R', 'E', 'F')
+#define AI_LWO_TOPC AI_IFF_FOURCC('T', 'O', 'P', 'C')
+#define AI_LWO_SDAT AI_IFF_FOURCC('S', 'D', 'A', 'T')
+#define AI_LWO_TFP0 AI_IFF_FOURCC('T', 'F', 'P', '0')
+#define AI_LWO_TFP1 AI_IFF_FOURCC('T', 'F', 'P', '1')
+
+/* top-level chunks */
+#define AI_LWO_LAYR AI_IFF_FOURCC('L', 'A', 'Y', 'R')
+#define AI_LWO_TAGS AI_IFF_FOURCC('T', 'A', 'G', 'S')
+#define AI_LWO_PNTS AI_IFF_FOURCC('P', 'N', 'T', 'S')
+#define AI_LWO_BBOX AI_IFF_FOURCC('B', 'B', 'O', 'X')
+#define AI_LWO_VMAP AI_IFF_FOURCC('V', 'M', 'A', 'P')
+#define AI_LWO_VMAD AI_IFF_FOURCC('V', 'M', 'A', 'D')
+#define AI_LWO_POLS AI_IFF_FOURCC('P', 'O', 'L', 'S')
+#define AI_LWO_PTAG AI_IFF_FOURCC('P', 'T', 'A', 'G')
+#define AI_LWO_ENVL AI_IFF_FOURCC('E', 'N', 'V', 'L')
+#define AI_LWO_CLIP AI_IFF_FOURCC('C', 'L', 'I', 'P')
+#define AI_LWO_SURF AI_IFF_FOURCC('S', 'U', 'R', 'F')
+#define AI_LWO_DESC AI_IFF_FOURCC('D', 'E', 'S', 'C')
+#define AI_LWO_TEXT AI_IFF_FOURCC('T', 'E', 'X', 'T')
+#define AI_LWO_ICON AI_IFF_FOURCC('I', 'C', 'O', 'N')
+
+/* polygon types */
+#define AI_LWO_FACE AI_IFF_FOURCC('F', 'A', 'C', 'E')
+#define AI_LWO_CURV AI_IFF_FOURCC('C', 'U', 'R', 'V')
+#define AI_LWO_PTCH AI_IFF_FOURCC('P', 'T', 'C', 'H')
+#define AI_LWO_MBAL AI_IFF_FOURCC('M', 'B', 'A', 'L')
+#define AI_LWO_BONE AI_IFF_FOURCC('B', 'O', 'N', 'E')
+#define AI_LWO_SUBD AI_IFF_FOURCC('S', 'U', 'B', 'D')
+
+/* polygon tags */
+#define AI_LWO_SURF AI_IFF_FOURCC('S', 'U', 'R', 'F')
+#define AI_LWO_PART AI_IFF_FOURCC('P', 'A', 'R', 'T')
+#define AI_LWO_SMGP AI_IFF_FOURCC('S', 'M', 'G', 'P')
+
+/* envelopes */
+#define AI_LWO_PRE AI_IFF_FOURCC('P', 'R', 'E', ' ')
+#define AI_LWO_POST AI_IFF_FOURCC('P', 'O', 'S', 'T')
+#define AI_LWO_KEY AI_IFF_FOURCC('K', 'E', 'Y', ' ')
+#define AI_LWO_SPAN AI_IFF_FOURCC('S', 'P', 'A', 'N')
+#define AI_LWO_TCB AI_IFF_FOURCC('T', 'C', 'B', ' ')
+#define AI_LWO_HERM AI_IFF_FOURCC('H', 'E', 'R', 'M')
+#define AI_LWO_BEZI AI_IFF_FOURCC('B', 'E', 'Z', 'I')
+#define AI_LWO_BEZ2 AI_IFF_FOURCC('B', 'E', 'Z', '2')
+#define AI_LWO_LINE AI_IFF_FOURCC('L', 'I', 'N', 'E')
+#define AI_LWO_STEP AI_IFF_FOURCC('S', 'T', 'E', 'P')
+
+/* clips */
+#define AI_LWO_STIL AI_IFF_FOURCC('S', 'T', 'I', 'L')
+#define AI_LWO_ISEQ AI_IFF_FOURCC('I', 'S', 'E', 'Q')
+#define AI_LWO_ANIM AI_IFF_FOURCC('A', 'N', 'I', 'M')
+#define AI_LWO_XREF AI_IFF_FOURCC('X', 'R', 'E', 'F')
+#define AI_LWO_STCC AI_IFF_FOURCC('S', 'T', 'C', 'C')
+#define AI_LWO_TIME AI_IFF_FOURCC('T', 'I', 'M', 'E')
+#define AI_LWO_CONT AI_IFF_FOURCC('C', 'O', 'N', 'T')
+#define AI_LWO_BRIT AI_IFF_FOURCC('B', 'R', 'I', 'T')
+#define AI_LWO_SATR AI_IFF_FOURCC('S', 'A', 'T', 'R')
+#define AI_LWO_HUE AI_IFF_FOURCC('H', 'U', 'E', ' ')
+#define AI_LWO_GAMM AI_IFF_FOURCC('G', 'A', 'M', 'M')
+#define AI_LWO_NEGA AI_IFF_FOURCC('N', 'E', 'G', 'A')
+#define AI_LWO_IFLT AI_IFF_FOURCC('I', 'F', 'L', 'T')
+#define AI_LWO_PFLT AI_IFF_FOURCC('P', 'F', 'L', 'T')
+
+/* surfaces */
+#define AI_LWO_COLR AI_IFF_FOURCC('C', 'O', 'L', 'R')
+#define AI_LWO_LUMI AI_IFF_FOURCC('L', 'U', 'M', 'I')
+#define AI_LWO_DIFF AI_IFF_FOURCC('D', 'I', 'F', 'F')
+#define AI_LWO_SPEC AI_IFF_FOURCC('S', 'P', 'E', 'C')
+#define AI_LWO_GLOS AI_IFF_FOURCC('G', 'L', 'O', 'S')
+#define AI_LWO_REFL AI_IFF_FOURCC('R', 'E', 'F', 'L')
+#define AI_LWO_RFOP AI_IFF_FOURCC('R', 'F', 'O', 'P')
+#define AI_LWO_RIMG AI_IFF_FOURCC('R', 'I', 'M', 'G')
+#define AI_LWO_RSAN AI_IFF_FOURCC('R', 'S', 'A', 'N')
+#define AI_LWO_TRAN AI_IFF_FOURCC('T', 'R', 'A', 'N')
+#define AI_LWO_TROP AI_IFF_FOURCC('T', 'R', 'O', 'P')
+#define AI_LWO_TIMG AI_IFF_FOURCC('T', 'I', 'M', 'G')
+#define AI_LWO_RIND AI_IFF_FOURCC('R', 'I', 'N', 'D')
+#define AI_LWO_TRNL AI_IFF_FOURCC('T', 'R', 'N', 'L')
+#define AI_LWO_BUMP AI_IFF_FOURCC('B', 'U', 'M', 'P')
+#define AI_LWO_SMAN AI_IFF_FOURCC('S', 'M', 'A', 'N')
+#define AI_LWO_SIDE AI_IFF_FOURCC('S', 'I', 'D', 'E')
+#define AI_LWO_CLRH AI_IFF_FOURCC('C', 'L', 'R', 'H')
+#define AI_LWO_CLRF AI_IFF_FOURCC('C', 'L', 'R', 'F')
+#define AI_LWO_ADTR AI_IFF_FOURCC('A', 'D', 'T', 'R')
+#define AI_LWO_SHRP AI_IFF_FOURCC('S', 'H', 'R', 'P')
+#define AI_LWO_LINE AI_IFF_FOURCC('L', 'I', 'N', 'E')
+#define AI_LWO_LSIZ AI_IFF_FOURCC('L', 'S', 'I', 'Z')
+#define AI_LWO_ALPH AI_IFF_FOURCC('A', 'L', 'P', 'H')
+#define AI_LWO_AVAL AI_IFF_FOURCC('A', 'V', 'A', 'L')
+#define AI_LWO_GVAL AI_IFF_FOURCC('G', 'V', 'A', 'L')
+#define AI_LWO_BLOK AI_IFF_FOURCC('B', 'L', 'O', 'K')
+#define AI_LWO_VCOL AI_IFF_FOURCC('V', 'C', 'O', 'L')
+
+/* texture layer */
+#define AI_LWO_TYPE AI_IFF_FOURCC('T', 'Y', 'P', 'E')
+#define AI_LWO_CHAN AI_IFF_FOURCC('C', 'H', 'A', 'N')
+#define AI_LWO_NAME AI_IFF_FOURCC('N', 'A', 'M', 'E')
+#define AI_LWO_ENAB AI_IFF_FOURCC('E', 'N', 'A', 'B')
+#define AI_LWO_OPAC AI_IFF_FOURCC('O', 'P', 'A', 'C')
+#define AI_LWO_FLAG AI_IFF_FOURCC('F', 'L', 'A', 'G')
+#define AI_LWO_PROJ AI_IFF_FOURCC('P', 'R', 'O', 'J')
+#define AI_LWO_STCK AI_IFF_FOURCC('S', 'T', 'C', 'K')
+#define AI_LWO_TAMP AI_IFF_FOURCC('T', 'A', 'M', 'P')
+
+/* texture coordinates */
+#define AI_LWO_TMAP AI_IFF_FOURCC('T', 'M', 'A', 'P')
+#define AI_LWO_AXIS AI_IFF_FOURCC('A', 'X', 'I', 'S')
+#define AI_LWO_CNTR AI_IFF_FOURCC('C', 'N', 'T', 'R')
+#define AI_LWO_SIZE AI_IFF_FOURCC('S', 'I', 'Z', 'E')
+#define AI_LWO_ROTA AI_IFF_FOURCC('R', 'O', 'T', 'A')
+#define AI_LWO_OREF AI_IFF_FOURCC('O', 'R', 'E', 'F')
+#define AI_LWO_FALL AI_IFF_FOURCC('F', 'A', 'L', 'L')
+#define AI_LWO_CSYS AI_IFF_FOURCC('C', 'S', 'Y', 'S')
+
+/* image map */
+#define AI_LWO_IMAP AI_IFF_FOURCC('I', 'M', 'A', 'P')
+#define AI_LWO_IMAG AI_IFF_FOURCC('I', 'M', 'A', 'G')
+#define AI_LWO_WRAP AI_IFF_FOURCC('W', 'R', 'A', 'P')
+#define AI_LWO_WRPW AI_IFF_FOURCC('W', 'R', 'P', 'W')
+#define AI_LWO_WRPH AI_IFF_FOURCC('W', 'R', 'P', 'H')
+#define AI_LWO_VMAP AI_IFF_FOURCC('V', 'M', 'A', 'P')
+#define AI_LWO_AAST AI_IFF_FOURCC('A', 'A', 'S', 'T')
+#define AI_LWO_PIXB AI_IFF_FOURCC('P', 'I', 'X', 'B')
+
+/* procedural */
+#define AI_LWO_PROC AI_IFF_FOURCC('P', 'R', 'O', 'C')
+#define AI_LWO_COLR AI_IFF_FOURCC('C', 'O', 'L', 'R')
+#define AI_LWO_VALU AI_IFF_FOURCC('V', 'A', 'L', 'U')
+#define AI_LWO_FUNC AI_IFF_FOURCC('F', 'U', 'N', 'C')
+#define AI_LWO_FTPS AI_IFF_FOURCC('F', 'T', 'P', 'S')
+#define AI_LWO_ITPS AI_IFF_FOURCC('I', 'T', 'P', 'S')
+#define AI_LWO_ETPS AI_IFF_FOURCC('E', 'T', 'P', 'S')
+
+/* gradient */
+#define AI_LWO_GRAD AI_IFF_FOURCC('G', 'R', 'A', 'D')
+#define AI_LWO_GRST AI_IFF_FOURCC('G', 'R', 'S', 'T')
+#define AI_LWO_GREN AI_IFF_FOURCC('G', 'R', 'E', 'N')
+#define AI_LWO_PNAM AI_IFF_FOURCC('P', 'N', 'A', 'M')
+#define AI_LWO_INAM AI_IFF_FOURCC('I', 'N', 'A', 'M')
+#define AI_LWO_GRPT AI_IFF_FOURCC('G', 'R', 'P', 'T')
+#define AI_LWO_FKEY AI_IFF_FOURCC('F', 'K', 'E', 'Y')
+#define AI_LWO_IKEY AI_IFF_FOURCC('I', 'K', 'E', 'Y')
+
+/* shader */
+#define AI_LWO_SHDR AI_IFF_FOURCC('S', 'H', 'D', 'R')
+#define AI_LWO_DATA AI_IFF_FOURCC('D', 'A', 'T', 'A')
+
+/* VMAP types */
+#define AI_LWO_TXUV AI_IFF_FOURCC('T', 'X', 'U', 'V')
+#define AI_LWO_RGB AI_IFF_FOURCC('R', 'G', 'B', ' ')
+#define AI_LWO_RGBA AI_IFF_FOURCC('R', 'G', 'B', 'A')
+#define AI_LWO_WGHT AI_IFF_FOURCC('W', 'G', 'H', 'T')
+
+#define AI_LWO_MNVW AI_IFF_FOURCC('M', 'N', 'V', 'W')
+#define AI_LWO_MORF AI_IFF_FOURCC('M', 'O', 'R', 'F')
+#define AI_LWO_SPOT AI_IFF_FOURCC('S', 'P', 'O', 'T')
+#define AI_LWO_PICK AI_IFF_FOURCC('P', 'I', 'C', 'K')
+
+// MODO extension - per-vertex normal vectors
+#define AI_LWO_MODO_NORM AI_IFF_FOURCC('N', 'O', 'R', 'M')
+
+// ---------------------------------------------------------------------------
+/** \brief Data structure for a face in a LWO file
+ *
+ * \note We can't use the code in SmoothingGroups.inl here - the mesh
+ * structures of 3DS/ASE and LWO are too different.
+ */
+struct Face : public aiFace {
+ //! Default construction
+ Face() AI_NO_EXCEPT
+ : surfaceIndex(0),
+ smoothGroup(0),
+ type(AI_LWO_FACE) {
+ // empty
+ }
+
+ //! Construction from given type
+ explicit Face(uint32_t _type) :
+ surfaceIndex(0), smoothGroup(0), type(_type) {}
+
+ //! Copy construction
+ Face(const Face &f) :
+ aiFace() {
+ *this = f;
+ }
+
+ //! Zero-based index into tags chunk
+ unsigned int surfaceIndex;
+
+ //! Smooth group this face is assigned to
+ unsigned int smoothGroup;
+
+ //! Type of face
+ uint32_t type;
+
+ //! Assignment operator
+ Face &operator=(const LWO::Face &f) {
+ aiFace::operator=(f);
+ surfaceIndex = f.surfaceIndex;
+ smoothGroup = f.smoothGroup;
+ type = f.type;
+ return *this;
+ }
+};
+
+// ---------------------------------------------------------------------------
+/** \brief Base structure for all vertex map representations
+ */
+struct VMapEntry {
+ explicit VMapEntry(unsigned int _dims) :
+ dims(_dims) {}
+
+ virtual ~VMapEntry() {}
+
+ //! allocates memory for the vertex map
+ virtual void Allocate(unsigned int num) {
+ if (!rawData.empty())
+ return; // return if already allocated
+
+ const unsigned int m = num * dims;
+ rawData.reserve(m + (m >> 2u)); // 25% as extra storage for VMADs
+ rawData.resize(m, 0.f);
+ abAssigned.resize(num, false);
+ }
+
+ std::string name;
+ unsigned int dims;
+
+ std::vector<float> rawData;
+ std::vector<bool> abAssigned;
+};
+
+// ---------------------------------------------------------------------------
+/** \brief Represents an extra vertex color channel
+ */
+struct VColorChannel : public VMapEntry {
+ VColorChannel() :
+ VMapEntry(4) {}
+
+ //! need to overwrite this function - the alpha channel must
+ //! be initialized to 1.0 by default
+ virtual void Allocate(unsigned int num) {
+ if (!rawData.empty())
+ return; // return if already allocated
+
+ unsigned int m = num * dims;
+ rawData.reserve(m + (m >> 2u)); // 25% as extra storage for VMADs
+ rawData.resize(m);
+
+ for (aiColor4D *p = (aiColor4D *)&rawData[0]; p < (aiColor4D *)&rawData[m - 1]; ++p)
+ p->a = 1.f;
+
+ abAssigned.resize(num, false);
+ }
+};
+
+// ---------------------------------------------------------------------------
+/** \brief Represents an extra vertex UV channel
+ */
+struct UVChannel : public VMapEntry {
+ UVChannel() :
+ VMapEntry(2) {}
+};
+
+// ---------------------------------------------------------------------------
+/** \brief Represents a weight map
+ */
+struct WeightChannel : public VMapEntry {
+ WeightChannel() :
+ VMapEntry(1) {}
+};
+
+// ---------------------------------------------------------------------------
+/** \brief Represents a vertex-normals channel (MODO extension)
+ */
+struct NormalChannel : public VMapEntry {
+ NormalChannel() :
+ VMapEntry(3) {}
+};
+
+// ---------------------------------------------------------------------------
+/** \brief Data structure for a LWO file texture
+ */
+struct Texture {
+ // we write the enum values out here to make debugging easier ...
+ enum BlendType {
+ Normal = 0,
+ Subtractive = 1,
+ Difference = 2,
+ Multiply = 3,
+ Divide = 4,
+ Alpha = 5,
+ TextureDispl = 6,
+ Additive = 7
+ };
+
+ enum MappingMode {
+ Planar = 0,
+ Cylindrical = 1,
+ Spherical = 2,
+ Cubic = 3,
+ FrontProjection = 4,
+ UV = 5
+ };
+
+ enum Axes {
+ AXIS_X = 0,
+ AXIS_Y = 1,
+ AXIS_Z = 2
+ };
+
+ enum Wrap {
+ RESET = 0,
+ REPEAT = 1,
+ MIRROR = 2,
+ EDGE = 3
+ };
+
+ Texture() :
+ mClipIdx(UINT_MAX), mStrength(1.0f), type(), mUVChannelIndex("unknown"), mRealUVIndex(UINT_MAX), enabled(true), blendType(Additive), bCanUse(true), mapMode(UV), majorAxis(AXIS_X), wrapAmountH(1.0f), wrapAmountW(1.0f), wrapModeWidth(REPEAT), wrapModeHeight(REPEAT), ordinal("\x00") {}
+
+ //! File name of the texture
+ std::string mFileName;
+
+ //! Clip index
+ unsigned int mClipIdx;
+
+ //! Strength of the texture - blend factor
+ float mStrength;
+
+ uint32_t type; // type of the texture
+
+ //! Name of the corresponding UV channel
+ std::string mUVChannelIndex;
+ unsigned int mRealUVIndex;
+
+ //! is the texture enabled?
+ bool enabled;
+
+ //! blend type
+ BlendType blendType;
+
+ //! are we able to use the texture?
+ bool bCanUse;
+
+ //! mapping mode
+ MappingMode mapMode;
+
+ //! major axis for planar, cylindrical, spherical projections
+ Axes majorAxis;
+
+ //! wrap amount for cylindrical and spherical projections
+ float wrapAmountH, wrapAmountW;
+
+ //! wrapping mode for the texture
+ Wrap wrapModeWidth, wrapModeHeight;
+
+ //! ordinal string of the texture
+ std::string ordinal;
+};
+
+// ---------------------------------------------------------------------------
+/** \brief Data structure for a LWO file clip
+ */
+struct Clip {
+ enum Type {
+ STILL,
+ SEQ,
+ REF,
+ UNSUPPORTED
+ } type;
+
+ Clip() :
+ type(UNSUPPORTED), clipRef(), idx(0), negate(false) {}
+
+ //! path to the base texture -
+ std::string path;
+
+ //! reference to another CLIP
+ unsigned int clipRef;
+
+ //! index of the clip
+ unsigned int idx;
+
+ //! Negate the clip?
+ bool negate;
+};
+
+// ---------------------------------------------------------------------------
+/** \brief Data structure for a LWO file shader
+ *
+ * Later
+ */
+struct Shader {
+ Shader() :
+ ordinal("\x00"), functionName("unknown"), enabled(true) {}
+
+ std::string ordinal;
+ std::string functionName;
+ bool enabled;
+};
+
+typedef std::list<Texture> TextureList;
+typedef std::list<Shader> ShaderList;
+
+// ---------------------------------------------------------------------------
+/** \brief Data structure for a LWO file surface (= material)
+ */
+struct Surface {
+ Surface() :
+ mColor(0.78431f, 0.78431f, 0.78431f), bDoubleSided(false), mDiffuseValue(1.f), mSpecularValue(0.f), mTransparency(0.f), mGlossiness(0.4f), mLuminosity(0.f), mColorHighlights(0.f), mMaximumSmoothAngle(0.f) // 0 == not specified, no smoothing
+ ,
+ mVCMap(),
+ mVCMapType(AI_LWO_RGBA),
+ mIOR(1.f) // vakuum
+ ,
+ mBumpIntensity(1.f),
+ mWireframe(false),
+ mAdditiveTransparency(0.f) {}
+
+ //! Name of the surface
+ std::string mName;
+
+ //! Color of the surface
+ aiColor3D mColor;
+
+ //! true for two-sided materials
+ bool bDoubleSided;
+
+ //! Various material parameters
+ float mDiffuseValue, mSpecularValue, mTransparency, mGlossiness, mLuminosity, mColorHighlights;
+
+ //! Maximum angle between two adjacent triangles
+ //! that they can be smoothed - in degrees
+ float mMaximumSmoothAngle;
+
+ //! Vertex color map to be used to color the surface
+ std::string mVCMap;
+ uint32_t mVCMapType;
+
+ //! Names of the special shaders to be applied to the surface
+ ShaderList mShaders;
+
+ //! Textures - the first entry in the list is evaluated first
+ TextureList mColorTextures, // color textures are added to both diffuse and specular texture stacks
+ mDiffuseTextures,
+ mSpecularTextures,
+ mOpacityTextures,
+ mBumpTextures,
+ mGlossinessTextures,
+ mReflectionTextures;
+
+ //! Index of refraction
+ float mIOR;
+
+ //! Bump intensity scaling
+ float mBumpIntensity;
+
+ //! Wireframe flag
+ bool mWireframe;
+
+ //! Intensity of additive blending
+ float mAdditiveTransparency;
+};
+
+// ---------------------------------------------------------------------------
+#define AI_LWO_VALIDATE_CHUNK_LENGTH(length, name, size) \
+ if (length < size) { \
+ throw DeadlyImportError("LWO: " #name " chunk is too small"); \
+ }
+
+// some typedefs ... to make life with loader monsters like this easier
+typedef std::vector<aiVector3D> PointList;
+typedef std::vector<LWO::Face> FaceList;
+typedef std::vector<LWO::Surface> SurfaceList;
+typedef std::vector<std::string> TagList;
+typedef std::vector<unsigned int> TagMappingTable;
+typedef std::vector<unsigned int> ReferrerList;
+typedef std::vector<WeightChannel> WeightChannelList;
+typedef std::vector<VColorChannel> VColorChannelList;
+typedef std::vector<UVChannel> UVChannelList;
+typedef std::vector<Clip> ClipList;
+typedef std::vector<Envelope> EnvelopeList;
+typedef std::vector<unsigned int> SortedRep;
+
+// ---------------------------------------------------------------------------
+/** \brief Represents a layer in the file
+ */
+struct Layer {
+ Layer() :
+ mFaceIDXOfs(0), mPointIDXOfs(0), mParent(0x0), mIndex(0xffff), skip(false) {}
+
+ /** Temporary point list from the file */
+ PointList mTempPoints;
+
+ /** Lists for every point the index of another point
+ that has been copied from *this* point or UINT_MAX if
+ no copy of the point has been made */
+ ReferrerList mPointReferrers;
+
+ /** Weight channel list from the file */
+ WeightChannelList mWeightChannels;
+
+ /** Subdivision weight channel list from the file */
+ WeightChannelList mSWeightChannels;
+
+ /** Vertex color list from the file */
+ VColorChannelList mVColorChannels;
+
+ /** UV channel list from the file */
+ UVChannelList mUVChannels;
+
+ /** Normal vector channel from the file */
+ NormalChannel mNormals;
+
+ /** Temporary face list from the file*/
+ FaceList mFaces;
+
+ /** Current face indexing offset from the beginning of the buffers*/
+ unsigned int mFaceIDXOfs;
+
+ /** Current point indexing offset from the beginning of the buffers*/
+ unsigned int mPointIDXOfs;
+
+ /** Parent index */
+ uint16_t mParent;
+
+ /** Index of the layer */
+ uint16_t mIndex;
+
+ /** Name of the layer */
+ std::string mName;
+
+ /** Pivot point of the layer */
+ aiVector3D mPivot;
+
+ /** Skip this layer? */
+ bool skip;
+};
+
+typedef std::list<LWO::Layer> LayerList;
+
+} // namespace LWO
+} // namespace Assimp
+
+#endif // !! AI_LWO_FILEDATA_INCLUDED
diff --git a/libs/assimp/code/AssetLib/LWO/LWOLoader.cpp b/libs/assimp/code/AssetLib/LWO/LWOLoader.cpp
new file mode 100644
index 0000000..7410fb6
--- /dev/null
+++ b/libs/assimp/code/AssetLib/LWO/LWOLoader.cpp
@@ -0,0 +1,1422 @@
+/*
+---------------------------------------------------------------------------
+Open Asset Import Library (assimp)
+---------------------------------------------------------------------------
+
+Copyright (c) 2006-2022, assimp team
+
+
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the following
+conditions are met:
+
+* Redistributions of source code must retain the above
+ copyright notice, this list of conditions and the
+ following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+ copyright notice, this list of conditions and the
+ following disclaimer in the documentation and/or other
+ materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+ contributors may be used to endorse or promote products
+ derived from this software without specific prior
+ written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+---------------------------------------------------------------------------
+*/
+
+/** @file LWOLoader.cpp
+ * @brief Implementation of the LWO importer class
+ */
+
+#ifndef ASSIMP_BUILD_NO_LWO_IMPORTER
+
+// internal headers
+#include "AssetLib/LWO/LWOLoader.h"
+#include "PostProcessing/ConvertToLHProcess.h"
+#include "PostProcessing/ProcessHelper.h"
+
+#include <assimp/ByteSwapper.h>
+#include <assimp/SGSpatialSort.h>
+#include <assimp/StringComparison.h>
+#include <assimp/importerdesc.h>
+#include <assimp/IOSystem.hpp>
+
+#include <iomanip>
+#include <map>
+#include <memory>
+#include <sstream>
+
+using namespace Assimp;
+
+static const aiImporterDesc desc = {
+ "LightWave/Modo Object Importer",
+ "",
+ "",
+ "https://www.lightwave3d.com/lightwave_sdk/",
+ aiImporterFlags_SupportTextFlavour,
+ 0,
+ 0,
+ 0,
+ 0,
+ "lwo lxo"
+};
+
+// ------------------------------------------------------------------------------------------------
+// Constructor to be privately used by Importer
+LWOImporter::LWOImporter() :
+ mIsLWO2(),
+ mIsLXOB(),
+ mLayers(),
+ mCurLayer(),
+ mTags(),
+ mMapping(),
+ mSurfaces(),
+ mFileBuffer(),
+ fileSize(),
+ mScene(nullptr),
+ configSpeedFlag(),
+ configLayerIndex(),
+ hasNamedLayer() {
+ // empty
+}
+
+// ------------------------------------------------------------------------------------------------
+// Destructor, private as well
+LWOImporter::~LWOImporter() {
+ // empty
+}
+
+// ------------------------------------------------------------------------------------------------
+// Returns whether the class can handle the format of the given file.
+bool LWOImporter::CanRead(const std::string &file, IOSystem *pIOHandler, bool /*checkSig*/) const {
+ static const uint32_t tokens[] = {
+ AI_LWO_FOURCC_LWOB,
+ AI_LWO_FOURCC_LWO2,
+ AI_LWO_FOURCC_LXOB
+ };
+ return CheckMagicToken(pIOHandler, file, tokens, AI_COUNT_OF(tokens), 8);
+}
+
+// ------------------------------------------------------------------------------------------------
+// Setup configuration properties
+void LWOImporter::SetupProperties(const Importer *pImp) {
+ configSpeedFlag = (0 != pImp->GetPropertyInteger(AI_CONFIG_FAVOUR_SPEED, 0) ? true : false);
+ configLayerIndex = pImp->GetPropertyInteger(AI_CONFIG_IMPORT_LWO_ONE_LAYER_ONLY, UINT_MAX);
+ configLayerName = pImp->GetPropertyString(AI_CONFIG_IMPORT_LWO_ONE_LAYER_ONLY, "");
+}
+
+// ------------------------------------------------------------------------------------------------
+// Get list of file extensions
+const aiImporterDesc *LWOImporter::GetInfo() const {
+ return &desc;
+}
+
+// ------------------------------------------------------------------------------------------------
+// Imports the given file into the given scene structure.
+void LWOImporter::InternReadFile(const std::string &pFile,
+ aiScene *pScene,
+ IOSystem *pIOHandler) {
+ std::unique_ptr<IOStream> file(pIOHandler->Open(pFile, "rb"));
+
+ // Check whether we can read from the file
+ if (file.get() == nullptr) {
+ throw DeadlyImportError("Failed to open LWO file ", pFile, ".");
+ }
+
+ if ((this->fileSize = (unsigned int)file->FileSize()) < 12) {
+ throw DeadlyImportError("LWO: The file is too small to contain the IFF header");
+ }
+
+ // Allocate storage and copy the contents of the file to a memory buffer
+ std::vector<uint8_t> mBuffer(fileSize);
+ file->Read(&mBuffer[0], 1, fileSize);
+ mScene = pScene;
+
+ // Determine the type of the file
+ uint32_t fileType;
+ const char *sz = IFF::ReadHeader(&mBuffer[0], fileType);
+ if (sz) {
+ throw DeadlyImportError(sz);
+ }
+
+ mFileBuffer = &mBuffer[0] + 12;
+ fileSize -= 12;
+
+ // Initialize some members with their default values
+ hasNamedLayer = false;
+
+ // Create temporary storage on the stack but store pointers to it in the class
+ // instance. Therefore everything will be destructed properly if an exception
+ // is thrown and we needn't take care of that.
+ LayerList _mLayers;
+ SurfaceList _mSurfaces;
+ TagList _mTags;
+ TagMappingTable _mMapping;
+
+ mLayers = &_mLayers;
+ mTags = &_mTags;
+ mMapping = &_mMapping;
+ mSurfaces = &_mSurfaces;
+
+ // Allocate a default layer (layer indices are 1-based from now)
+ mLayers->push_back(Layer());
+ mCurLayer = &mLayers->back();
+ mCurLayer->mName = "<LWODefault>";
+ mCurLayer->mIndex = (uint16_t) -1;
+
+ // old lightwave file format (prior to v6)
+ if (AI_LWO_FOURCC_LWOB == fileType) {
+ ASSIMP_LOG_INFO("LWO file format: LWOB (<= LightWave 5.5)");
+
+ mIsLWO2 = false;
+ mIsLXOB = false;
+ LoadLWOBFile();
+ } else if (AI_LWO_FOURCC_LWO2 == fileType) {
+ // New lightwave format
+ mIsLXOB = false;
+ ASSIMP_LOG_INFO("LWO file format: LWO2 (>= LightWave 6)");
+ } else if (AI_LWO_FOURCC_LXOB == fileType) {
+ // MODO file format
+ mIsLXOB = true;
+ ASSIMP_LOG_INFO("LWO file format: LXOB (Modo)");
+ }
+ else {
+ char szBuff[5];
+ szBuff[0] = (char)(fileType >> 24u);
+ szBuff[1] = (char)(fileType >> 16u);
+ szBuff[2] = (char)(fileType >> 8u);
+ szBuff[3] = (char)(fileType);
+ szBuff[4] = '\0';
+ throw DeadlyImportError("Unknown LWO sub format: ", szBuff);
+ }
+
+ if (AI_LWO_FOURCC_LWOB != fileType) {
+ mIsLWO2 = true;
+ LoadLWO2File();
+
+ // The newer lightwave format allows the user to configure the
+ // loader that just one layer is used. If this is the case
+ // we need to check now whether the requested layer has been found.
+ if (UINT_MAX != configLayerIndex) {
+ unsigned int layerCount = 0;
+ for (std::list<LWO::Layer>::iterator itLayers = mLayers->begin(); itLayers != mLayers->end(); ++itLayers)
+ if (!itLayers->skip)
+ layerCount++;
+ if (layerCount != 2)
+ throw DeadlyImportError("LWO2: The requested layer was not found");
+ }
+
+ if (configLayerName.length() && !hasNamedLayer) {
+ throw DeadlyImportError("LWO2: Unable to find the requested layer: ", configLayerName);
+ }
+ }
+
+ // now, as we have loaded all data, we can resolve cross-referenced tags and clips
+ ResolveTags();
+ ResolveClips();
+
+ // now process all layers and build meshes and nodes
+ std::vector<aiMesh *> apcMeshes;
+ std::map<uint16_t, aiNode *> apcNodes;
+
+ apcMeshes.reserve(mLayers->size() * std::min(((unsigned int)mSurfaces->size() / 2u), 1u));
+
+ unsigned int iDefaultSurface = UINT_MAX; // index of the default surface
+ for (LWO::Layer &layer : *mLayers) {
+ if (layer.skip)
+ continue;
+
+ // I don't know whether there could be dummy layers, but it would be possible
+ const unsigned int meshStart = (unsigned int)apcMeshes.size();
+ if (!layer.mFaces.empty() && !layer.mTempPoints.empty()) {
+
+ // now sort all faces by the surfaces assigned to them
+ std::vector<SortedRep> pSorted(mSurfaces->size() + 1);
+
+ unsigned int i = 0;
+ for (FaceList::iterator it = layer.mFaces.begin(), end = layer.mFaces.end(); it != end; ++it, ++i) {
+ // Check whether we support this face's type
+ if ((*it).type != AI_LWO_FACE && (*it).type != AI_LWO_PTCH &&
+ (*it).type != AI_LWO_BONE && (*it).type != AI_LWO_SUBD) {
+ continue;
+ }
+
+ unsigned int idx = (*it).surfaceIndex;
+ if (idx >= mTags->size()) {
+ ASSIMP_LOG_WARN("LWO: Invalid face surface index");
+ idx = UINT_MAX;
+ }
+ if (UINT_MAX == idx || UINT_MAX == (idx = _mMapping[idx])) {
+ if (UINT_MAX == iDefaultSurface) {
+ iDefaultSurface = (unsigned int)mSurfaces->size();
+ mSurfaces->push_back(LWO::Surface());
+ LWO::Surface &surf = mSurfaces->back();
+ surf.mColor.r = surf.mColor.g = surf.mColor.b = 0.6f;
+ surf.mName = "LWODefaultSurface";
+ }
+ idx = iDefaultSurface;
+ }
+ pSorted[idx].push_back(i);
+ }
+ if (UINT_MAX == iDefaultSurface) {
+ pSorted.erase(pSorted.end() - 1);
+ }
+ for (unsigned int p = 0, j = 0; j < mSurfaces->size(); ++j) {
+ SortedRep &sorted = pSorted[j];
+ if (sorted.empty())
+ continue;
+
+ // generate the mesh
+ aiMesh *mesh = new aiMesh();
+ apcMeshes.push_back(mesh);
+ mesh->mNumFaces = (unsigned int)sorted.size();
+
+ // count the number of vertices
+ SortedRep::const_iterator it = sorted.begin(), end = sorted.end();
+ for (; it != end; ++it) {
+ mesh->mNumVertices += layer.mFaces[*it].mNumIndices;
+ }
+
+ aiVector3D *nrm = nullptr, *pv = mesh->mVertices = new aiVector3D[mesh->mNumVertices];
+ aiFace *pf = mesh->mFaces = new aiFace[mesh->mNumFaces];
+ mesh->mMaterialIndex = j;
+
+ // find out which vertex color channels and which texture coordinate
+ // channels are really required by the material attached to this mesh
+ unsigned int vUVChannelIndices[AI_MAX_NUMBER_OF_TEXTURECOORDS];
+ unsigned int vVColorIndices[AI_MAX_NUMBER_OF_COLOR_SETS];
+
+#ifdef ASSIMP_BUILD_DEBUG
+ for (unsigned int mui = 0; mui < AI_MAX_NUMBER_OF_TEXTURECOORDS; ++mui) {
+ vUVChannelIndices[mui] = UINT_MAX;
+ }
+ for (unsigned int mui = 0; mui < AI_MAX_NUMBER_OF_COLOR_SETS; ++mui) {
+ vVColorIndices[mui] = UINT_MAX;
+ }
+#endif
+
+ FindUVChannels(_mSurfaces[j], sorted, layer, vUVChannelIndices);
+ FindVCChannels(_mSurfaces[j], sorted, layer, vVColorIndices);
+
+ // allocate storage for UV and CV channels
+ aiVector3D *pvUV[AI_MAX_NUMBER_OF_TEXTURECOORDS];
+ for (unsigned int mui = 0; mui < AI_MAX_NUMBER_OF_TEXTURECOORDS; ++mui) {
+ if (UINT_MAX == vUVChannelIndices[mui]) {
+ break;
+ }
+
+ pvUV[mui] = mesh->mTextureCoords[mui] = new aiVector3D[mesh->mNumVertices];
+
+ // LightWave doesn't support more than 2 UV components (?)
+ mesh->mNumUVComponents[0] = 2;
+ }
+
+ if (layer.mNormals.name.length()) {
+ nrm = mesh->mNormals = new aiVector3D[mesh->mNumVertices];
+ }
+
+ aiColor4D *pvVC[AI_MAX_NUMBER_OF_COLOR_SETS];
+ for (unsigned int mui = 0; mui < AI_MAX_NUMBER_OF_COLOR_SETS; ++mui) {
+ if (UINT_MAX == vVColorIndices[mui]) {
+ break;
+ }
+ pvVC[mui] = mesh->mColors[mui] = new aiColor4D[mesh->mNumVertices];
+ }
+
+ // we would not need this extra array, but the code is much cleaner if we use it
+ std::vector<unsigned int> &smoothingGroups = layer.mPointReferrers;
+ smoothingGroups.erase(smoothingGroups.begin(), smoothingGroups.end());
+ smoothingGroups.resize(mesh->mNumFaces, 0);
+
+ // now convert all faces
+ unsigned int vert = 0;
+ std::vector<unsigned int>::iterator outIt = smoothingGroups.begin();
+ for (it = sorted.begin(); it != end; ++it, ++outIt) {
+ const LWO::Face &face = layer.mFaces[*it];
+ *outIt = face.smoothGroup;
+
+ // copy all vertices
+ for (unsigned int q = 0; q < face.mNumIndices; ++q, ++vert) {
+ unsigned int idx = face.mIndices[q];
+ *pv++ = layer.mTempPoints[idx] /*- layer.mPivot*/;
+
+ // process UV coordinates
+ for (unsigned int w = 0; w < AI_MAX_NUMBER_OF_TEXTURECOORDS; ++w) {
+ if (UINT_MAX == vUVChannelIndices[w]) {
+ break;
+ }
+ aiVector3D *&pp = pvUV[w];
+ const aiVector2D &src = ((aiVector2D *)&layer.mUVChannels[vUVChannelIndices[w]].rawData[0])[idx];
+ pp->x = src.x;
+ pp->y = src.y;
+ pp++;
+ }
+
+ // process normals (MODO extension)
+ if (nrm) {
+ *nrm = ((aiVector3D *)&layer.mNormals.rawData[0])[idx];
+ nrm->z *= -1.f;
+ ++nrm;
+ }
+
+ // process vertex colors
+ for (unsigned int w = 0; w < AI_MAX_NUMBER_OF_COLOR_SETS; ++w) {
+ if (UINT_MAX == vVColorIndices[w]) {
+ break;
+ }
+ *pvVC[w] = ((aiColor4D *)&layer.mVColorChannels[vVColorIndices[w]].rawData[0])[idx];
+
+ // If a RGB color map is explicitly requested delete the
+ // alpha channel - it could theoretically be != 1.
+ if (_mSurfaces[j].mVCMapType == AI_LWO_RGB)
+ pvVC[w]->a = 1.f;
+
+ pvVC[w]++;
+ }
+
+#if 0
+ // process vertex weights. We can't properly reconstruct the whole skeleton for now,
+ // but we can create dummy bones for all weight channels which we have.
+ for (unsigned int w = 0; w < layer.mWeightChannels.size();++w)
+ {
+ }
+#endif
+
+ face.mIndices[q] = vert;
+ }
+ pf->mIndices = face.mIndices;
+ pf->mNumIndices = face.mNumIndices;
+ unsigned int **facePtr = (unsigned int **)&face.mIndices;
+ *facePtr = nullptr; // HACK: make sure it won't be deleted
+ pf++;
+ }
+
+ if (!mesh->mNormals) {
+ // Compute normal vectors for the mesh - we can't use our GenSmoothNormal-
+ // Step here since it wouldn't handle smoothing groups correctly for LWO.
+ // So we use a separate implementation.
+ ComputeNormals(mesh, smoothingGroups, _mSurfaces[j]);
+ } else {
+ ASSIMP_LOG_VERBOSE_DEBUG("LWO2: No need to compute normals, they're already there");
+ }
+ ++p;
+ }
+ }
+
+ // Generate nodes to render the mesh. Store the source layer in the mParent member of the nodes
+ unsigned int num = static_cast<unsigned int>(apcMeshes.size() - meshStart);
+ if (layer.mName != "<LWODefault>" || num > 0) {
+ aiNode *pcNode = new aiNode();
+ pcNode->mName.Set(layer.mName);
+ pcNode->mParent = (aiNode *)&layer;
+ pcNode->mNumMeshes = num;
+
+ if (pcNode->mNumMeshes) {
+ pcNode->mMeshes = new unsigned int[pcNode->mNumMeshes];
+ for (unsigned int p = 0; p < pcNode->mNumMeshes; ++p)
+ pcNode->mMeshes[p] = p + meshStart;
+ }
+ apcNodes[layer.mIndex] = pcNode;
+ }
+ }
+
+ if (apcNodes.empty() || apcMeshes.empty())
+ throw DeadlyImportError("LWO: No meshes loaded");
+
+ // The RemoveRedundantMaterials step will clean this up later
+ pScene->mMaterials = new aiMaterial *[pScene->mNumMaterials = (unsigned int)mSurfaces->size()];
+ for (unsigned int mat = 0; mat < pScene->mNumMaterials; ++mat) {
+ aiMaterial *pcMat = new aiMaterial();
+ pScene->mMaterials[mat] = pcMat;
+ ConvertMaterial((*mSurfaces)[mat], pcMat);
+ }
+
+ // copy the meshes to the output structure
+ pScene->mMeshes = new aiMesh *[pScene->mNumMeshes = (unsigned int)apcMeshes.size()];
+ ::memcpy(pScene->mMeshes, &apcMeshes[0], pScene->mNumMeshes * sizeof(void *));
+
+ // generate the final node graph
+ GenerateNodeGraph(apcNodes);
+}
+
+// ------------------------------------------------------------------------------------------------
+void LWOImporter::ComputeNormals(aiMesh *mesh, const std::vector<unsigned int> &smoothingGroups,
+ const LWO::Surface &surface) {
+ // Allocate output storage
+ mesh->mNormals = new aiVector3D[mesh->mNumVertices];
+
+ // First generate per-face normals
+ aiVector3D *out;
+ std::vector<aiVector3D> faceNormals;
+
+ // ... in some cases that's already enough
+ if (!surface.mMaximumSmoothAngle)
+ out = mesh->mNormals;
+ else {
+ faceNormals.resize(mesh->mNumVertices);
+ out = &faceNormals[0];
+ }
+
+ aiFace *begin = mesh->mFaces, *const end = mesh->mFaces + mesh->mNumFaces;
+ for (; begin != end; ++begin) {
+ aiFace &face = *begin;
+
+ if (face.mNumIndices < 3) {
+ continue;
+ }
+
+ // LWO doc: "the normal is defined as the cross product of the first and last edges"
+ aiVector3D *pV1 = mesh->mVertices + face.mIndices[0];
+ aiVector3D *pV2 = mesh->mVertices + face.mIndices[1];
+ aiVector3D *pV3 = mesh->mVertices + face.mIndices[face.mNumIndices - 1];
+
+ aiVector3D vNor = ((*pV2 - *pV1) ^ (*pV3 - *pV1)).Normalize();
+ for (unsigned int i = 0; i < face.mNumIndices; ++i)
+ out[face.mIndices[i]] = vNor;
+ }
+ if (!surface.mMaximumSmoothAngle) return;
+ const float posEpsilon = ComputePositionEpsilon(mesh);
+
+ // Now generate the spatial sort tree
+ SGSpatialSort sSort;
+ std::vector<unsigned int>::const_iterator it = smoothingGroups.begin();
+ for (begin = mesh->mFaces; begin != end; ++begin, ++it) {
+ aiFace &face = *begin;
+ for (unsigned int i = 0; i < face.mNumIndices; ++i) {
+ unsigned int tt = face.mIndices[i];
+ sSort.Add(mesh->mVertices[tt], tt, *it);
+ }
+ }
+ // Sort everything - this takes O(nlogn) time
+ sSort.Prepare();
+ std::vector<unsigned int> poResult;
+ poResult.reserve(20);
+
+ // Generate vertex normals. We have O(logn) for the binary lookup, which we need
+ // for n elements, thus the EXPECTED complexity is O(nlogn)
+ if (surface.mMaximumSmoothAngle < 3.f && !configSpeedFlag) {
+ const float fLimit = std::cos(surface.mMaximumSmoothAngle);
+
+ for (begin = mesh->mFaces, it = smoothingGroups.begin(); begin != end; ++begin, ++it) {
+ const aiFace &face = *begin;
+ unsigned int *beginIdx = face.mIndices, *const endIdx = face.mIndices + face.mNumIndices;
+ for (; beginIdx != endIdx; ++beginIdx) {
+ unsigned int idx = *beginIdx;
+ sSort.FindPositions(mesh->mVertices[idx], *it, posEpsilon, poResult, true);
+
+ aiVector3D vNormals;
+ for (std::vector<unsigned int>::const_iterator a = poResult.begin(); a != poResult.end(); ++a) {
+ const aiVector3D &v = faceNormals[*a];
+ if (v * faceNormals[idx] < fLimit)
+ continue;
+ vNormals += v;
+ }
+ mesh->mNormals[idx] = vNormals.Normalize();
+ }
+ }
+ }
+ // faster code path in case there is no smooth angle
+ else {
+ std::vector<bool> vertexDone(mesh->mNumVertices, false);
+ for (begin = mesh->mFaces, it = smoothingGroups.begin(); begin != end; ++begin, ++it) {
+ const aiFace &face = *begin;
+ unsigned int *beginIdx = face.mIndices, *const endIdx = face.mIndices + face.mNumIndices;
+ for (; beginIdx != endIdx; ++beginIdx) {
+ unsigned int idx = *beginIdx;
+ if (vertexDone[idx])
+ continue;
+ sSort.FindPositions(mesh->mVertices[idx], *it, posEpsilon, poResult, true);
+
+ aiVector3D vNormals;
+ for (std::vector<unsigned int>::const_iterator a = poResult.begin(); a != poResult.end(); ++a) {
+ const aiVector3D &v = faceNormals[*a];
+ vNormals += v;
+ }
+ vNormals.Normalize();
+ for (std::vector<unsigned int>::const_iterator a = poResult.begin(); a != poResult.end(); ++a) {
+ mesh->mNormals[*a] = vNormals;
+ vertexDone[*a] = true;
+ }
+ }
+ }
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+void LWOImporter::GenerateNodeGraph(std::map<uint16_t, aiNode *> &apcNodes) {
+ // now generate the final nodegraph - generate a root node and attach children
+ aiNode *root = mScene->mRootNode = new aiNode();
+ root->mName.Set("<LWORoot>");
+
+ //Set parent of all children, inserting pivots
+ std::map<uint16_t, aiNode *> mapPivot;
+ for (auto itapcNodes = apcNodes.begin(); itapcNodes != apcNodes.end(); ++itapcNodes) {
+
+ //Get the parent index
+ LWO::Layer *nodeLayer = (LWO::Layer *)(itapcNodes->second->mParent);
+ uint16_t parentIndex = nodeLayer->mParent;
+
+ //Create pivot node, store it into the pivot map, and set the parent as the pivot
+ aiNode *pivotNode = new aiNode();
+ pivotNode->mName.Set("Pivot-" + std::string(itapcNodes->second->mName.data));
+ itapcNodes->second->mParent = pivotNode;
+
+ //Look for the parent node to attach the pivot to
+ if (apcNodes.find(parentIndex) != apcNodes.end()) {
+ pivotNode->mParent = apcNodes[parentIndex];
+ } else {
+ //If not, attach to the root node
+ pivotNode->mParent = root;
+ }
+
+ //Set the node and the pivot node transformation
+ itapcNodes->second->mTransformation.a4 = -nodeLayer->mPivot.x;
+ itapcNodes->second->mTransformation.b4 = -nodeLayer->mPivot.y;
+ itapcNodes->second->mTransformation.c4 = -nodeLayer->mPivot.z;
+ pivotNode->mTransformation.a4 = nodeLayer->mPivot.x;
+ pivotNode->mTransformation.b4 = nodeLayer->mPivot.y;
+ pivotNode->mTransformation.c4 = nodeLayer->mPivot.z;
+ mapPivot[-(itapcNodes->first + 2)] = pivotNode;
+ }
+
+ //Merge pivot map into node map
+ for (auto itMapPivot = mapPivot.begin(); itMapPivot != mapPivot.end(); ++itMapPivot) {
+ apcNodes[itMapPivot->first] = itMapPivot->second;
+ }
+
+ //Set children of all parents
+ apcNodes[(uint16_t)-1] = root;
+ for (auto itMapParentNodes = apcNodes.begin(); itMapParentNodes != apcNodes.end(); ++itMapParentNodes) {
+ for (auto itMapChildNodes = apcNodes.begin(); itMapChildNodes != apcNodes.end(); ++itMapChildNodes) {
+ if ((itMapParentNodes->first != itMapChildNodes->first) && (itMapParentNodes->second == itMapChildNodes->second->mParent)) {
+ ++(itMapParentNodes->second->mNumChildren);
+ }
+ }
+ if (itMapParentNodes->second->mNumChildren) {
+ itMapParentNodes->second->mChildren = new aiNode *[itMapParentNodes->second->mNumChildren];
+ uint16_t p = 0;
+ for (auto itMapChildNodes = apcNodes.begin(); itMapChildNodes != apcNodes.end(); ++itMapChildNodes) {
+ if ((itMapParentNodes->first != itMapChildNodes->first) && (itMapParentNodes->second == itMapChildNodes->second->mParent)) {
+ itMapParentNodes->second->mChildren[p++] = itMapChildNodes->second;
+ }
+ }
+ }
+ }
+
+ if (!mScene->mRootNode->mNumChildren)
+ throw DeadlyImportError("LWO: Unable to build a valid node graph");
+
+ // Remove a single root node with no meshes assigned to it ...
+ if (1 == mScene->mRootNode->mNumChildren) {
+ aiNode *pc = mScene->mRootNode->mChildren[0];
+ pc->mParent = mScene->mRootNode->mChildren[0] = nullptr;
+ delete mScene->mRootNode;
+ mScene->mRootNode = pc;
+ }
+
+ // convert the whole stuff to RH with CCW winding
+ MakeLeftHandedProcess maker;
+ maker.Execute(mScene);
+
+ FlipWindingOrderProcess flipper;
+ flipper.Execute(mScene);
+}
+
+// ------------------------------------------------------------------------------------------------
+void LWOImporter::ResolveTags() {
+ // --- this function is used for both LWO2 and LWOB
+ mMapping->resize(mTags->size(), UINT_MAX);
+ for (unsigned int a = 0; a < mTags->size(); ++a) {
+
+ const std::string &c = (*mTags)[a];
+ for (unsigned int i = 0; i < mSurfaces->size(); ++i) {
+
+ const std::string &d = (*mSurfaces)[i].mName;
+ if (!ASSIMP_stricmp(c, d)) {
+
+ (*mMapping)[a] = i;
+ break;
+ }
+ }
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+void LWOImporter::ResolveClips() {
+ for (unsigned int i = 0; i < mClips.size(); ++i) {
+
+ Clip &clip = mClips[i];
+ if (Clip::REF == clip.type) {
+
+ if (clip.clipRef >= mClips.size()) {
+ ASSIMP_LOG_ERROR("LWO2: Clip referrer index is out of range");
+ clip.clipRef = 0;
+ }
+
+ Clip &dest = mClips[clip.clipRef];
+ if (Clip::REF == dest.type) {
+ ASSIMP_LOG_ERROR("LWO2: Clip references another clip reference");
+ clip.type = Clip::UNSUPPORTED;
+ }
+
+ else {
+ clip.path = dest.path;
+ clip.type = dest.type;
+ }
+ }
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+void LWOImporter::AdjustTexturePath(std::string &out) {
+ // --- this function is used for both LWO2 and LWOB
+ if (!mIsLWO2 && ::strstr(out.c_str(), "(sequence)")) {
+
+ // remove the (sequence) and append 000
+ ASSIMP_LOG_INFO("LWOB: Sequence of animated texture found. It will be ignored");
+ out = out.substr(0, out.length() - 10) + "000";
+ }
+
+ // format: drive:path/file - we just need to insert a slash after the drive
+ std::string::size_type n = out.find_first_of(':');
+ if (std::string::npos != n) {
+ out.insert(n + 1, "/");
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+void LWOImporter::LoadLWOTags(unsigned int size) {
+ // --- this function is used for both LWO2 and LWOB
+
+ const char *szCur = (const char *)mFileBuffer, *szLast = szCur;
+ const char *const szEnd = szLast + size;
+ while (szCur < szEnd) {
+ if (!(*szCur)) {
+ const size_t len = (size_t)(szCur - szLast);
+ // FIX: skip empty-sized tags
+ if (len)
+ mTags->push_back(std::string(szLast, len));
+ szCur += (len & 0x1 ? 1 : 2);
+ szLast = szCur;
+ }
+ szCur++;
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+void LWOImporter::LoadLWOPoints(unsigned int length) {
+ // --- this function is used for both LWO2 and LWOB but for
+ // LWO2 we need to allocate 25% more storage - it could be we'll
+ // need to duplicate some points later.
+ const size_t vertexLen = 12;
+ if ((length % vertexLen) != 0) {
+ throw DeadlyImportError("LWO2: Points chunk length is not multiple of vertexLen (12)");
+ }
+ unsigned int regularSize = (unsigned int)mCurLayer->mTempPoints.size() + length / 12;
+ if (mIsLWO2) {
+ mCurLayer->mTempPoints.reserve(regularSize + (regularSize >> 2u));
+ mCurLayer->mTempPoints.resize(regularSize);
+
+ // initialize all point referrers with the default values
+ mCurLayer->mPointReferrers.reserve(regularSize + (regularSize >> 2u));
+ mCurLayer->mPointReferrers.resize(regularSize, UINT_MAX);
+ } else
+ mCurLayer->mTempPoints.resize(regularSize);
+
+ // perform endianness conversions
+#ifndef AI_BUILD_BIG_ENDIAN
+ for (unsigned int i = 0; i<length >> 2; ++i)
+ ByteSwap::Swap4(mFileBuffer + (i << 2));
+#endif
+ ::memcpy(&mCurLayer->mTempPoints[0], mFileBuffer, length);
+}
+
+// ------------------------------------------------------------------------------------------------
+void LWOImporter::LoadLWO2Polygons(unsigned int length) {
+ LE_NCONST uint16_t *const end = (LE_NCONST uint16_t *)(mFileBuffer + length);
+ const uint32_t type = GetU4();
+
+ // Determine the type of the polygons
+ switch (type) {
+ // read unsupported stuff too (although we won't process it)
+ case AI_LWO_MBAL:
+ ASSIMP_LOG_WARN("LWO2: Encountered unsupported primitive chunk (METABALL)");
+ break;
+ case AI_LWO_CURV:
+ ASSIMP_LOG_WARN("LWO2: Encountered unsupported primitive chunk (SPLINE)");
+ ;
+ break;
+
+ // These are ok with no restrictions
+ case AI_LWO_PTCH:
+ case AI_LWO_FACE:
+ case AI_LWO_BONE:
+ case AI_LWO_SUBD:
+ break;
+ default:
+
+ // hm!? wtf is this? ok ...
+ ASSIMP_LOG_ERROR("LWO2: Ignoring unknown polygon type.");
+ break;
+ }
+
+ // first find out how many faces and vertices we'll finally need
+ uint16_t *cursor = (uint16_t *)mFileBuffer;
+
+ unsigned int iNumFaces = 0, iNumVertices = 0;
+ CountVertsAndFacesLWO2(iNumVertices, iNumFaces, cursor, end);
+
+ // allocate the output array and copy face indices
+ if (iNumFaces) {
+ cursor = (uint16_t *)mFileBuffer;
+
+ mCurLayer->mFaces.resize(iNumFaces, LWO::Face(type));
+ FaceList::iterator it = mCurLayer->mFaces.begin();
+ CopyFaceIndicesLWO2(it, cursor, end);
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+void LWOImporter::CountVertsAndFacesLWO2(unsigned int &verts, unsigned int &faces,
+ uint16_t *&cursor, const uint16_t *const end, unsigned int max) {
+ while (cursor < end && max--) {
+ uint16_t numIndices;
+ ::memcpy(&numIndices, cursor++, 2);
+ AI_LSWAP2(numIndices);
+ numIndices &= 0x03FF;
+
+ verts += numIndices;
+ ++faces;
+
+ for (uint16_t i = 0; i < numIndices; i++) {
+ ReadVSizedIntLWO2((uint8_t *&)cursor);
+ }
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+void LWOImporter::CopyFaceIndicesLWO2(FaceList::iterator &it,
+ uint16_t *&cursor,
+ const uint16_t *const end) {
+ while (cursor < end) {
+ LWO::Face &face = *it++;
+ uint16_t numIndices;
+ ::memcpy(&numIndices, cursor++, 2);
+ AI_LSWAP2(numIndices);
+ face.mNumIndices = numIndices & 0x03FF;
+
+ if (face.mNumIndices) /* byte swapping has already been done */
+ {
+ face.mIndices = new unsigned int[face.mNumIndices];
+ for (unsigned int i = 0; i < face.mNumIndices; i++) {
+ face.mIndices[i] = ReadVSizedIntLWO2((uint8_t *&)cursor) + mCurLayer->mPointIDXOfs;
+ if (face.mIndices[i] > mCurLayer->mTempPoints.size()) {
+ ASSIMP_LOG_WARN("LWO2: Failure evaluating face record, index is out of range");
+ face.mIndices[i] = (unsigned int)mCurLayer->mTempPoints.size() - 1;
+ }
+ }
+ } else
+ throw DeadlyImportError("LWO2: Encountered invalid face record with zero indices");
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+void LWOImporter::LoadLWO2PolygonTags(unsigned int length) {
+ LE_NCONST uint8_t *const end = mFileBuffer + length;
+
+ AI_LWO_VALIDATE_CHUNK_LENGTH(length, PTAG, 4);
+ uint32_t type = GetU4();
+
+ if (type != AI_LWO_SURF && type != AI_LWO_SMGP)
+ return;
+
+ while (mFileBuffer < end) {
+ unsigned int i = ReadVSizedIntLWO2(mFileBuffer) + mCurLayer->mFaceIDXOfs;
+ unsigned int j = GetU2();
+
+ if (i >= mCurLayer->mFaces.size()) {
+ ASSIMP_LOG_WARN("LWO2: face index in PTAG is out of range");
+ continue;
+ }
+
+ switch (type) {
+
+ case AI_LWO_SURF:
+ mCurLayer->mFaces[i].surfaceIndex = j;
+ break;
+ case AI_LWO_SMGP: /* is that really used? */
+ mCurLayer->mFaces[i].smoothGroup = j;
+ break;
+ };
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+template <class T>
+VMapEntry *FindEntry(std::vector<T> &list, const std::string &name, bool perPoly) {
+ for (auto &elem : list) {
+ if (elem.name == name) {
+ if (!perPoly) {
+ ASSIMP_LOG_WARN("LWO2: Found two VMAP sections with equal names");
+ }
+ return &elem;
+ }
+ }
+ list.push_back(T());
+ VMapEntry *p = &list.back();
+ p->name = name;
+ return p;
+}
+
+// ------------------------------------------------------------------------------------------------
+template <class T>
+inline void CreateNewEntry(T &chan, unsigned int srcIdx) {
+ if (!chan.name.length())
+ return;
+
+ chan.abAssigned[srcIdx] = true;
+ chan.abAssigned.resize(chan.abAssigned.size() + 1, false);
+
+ for (unsigned int a = 0; a < chan.dims; ++a)
+ chan.rawData.push_back(chan.rawData[srcIdx * chan.dims + a]);
+}
+
+// ------------------------------------------------------------------------------------------------
+template <class T>
+inline void CreateNewEntry(std::vector<T> &list, unsigned int srcIdx) {
+ for (auto &elem : list) {
+ CreateNewEntry(elem, srcIdx);
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+inline void LWOImporter::DoRecursiveVMAPAssignment(VMapEntry *base, unsigned int numRead,
+ unsigned int idx, float *data) {
+ ai_assert(nullptr != data);
+ LWO::ReferrerList &refList = mCurLayer->mPointReferrers;
+ unsigned int i;
+
+ if (idx >= base->abAssigned.size()) {
+ throw DeadlyImportError("Bad index");
+ }
+ base->abAssigned[idx] = true;
+ for (i = 0; i < numRead; ++i) {
+ base->rawData[idx * base->dims + i] = data[i];
+ }
+
+ if (UINT_MAX != (i = refList[idx])) {
+ DoRecursiveVMAPAssignment(base, numRead, i, data);
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+inline void AddToSingleLinkedList(ReferrerList &refList, unsigned int srcIdx, unsigned int destIdx) {
+ if (UINT_MAX == refList[srcIdx]) {
+ refList[srcIdx] = destIdx;
+ return;
+ }
+ AddToSingleLinkedList(refList, refList[srcIdx], destIdx);
+}
+
+// ------------------------------------------------------------------------------------------------
+// Load LWO2 vertex map
+void LWOImporter::LoadLWO2VertexMap(unsigned int length, bool perPoly) {
+ LE_NCONST uint8_t *const end = mFileBuffer + length;
+
+ AI_LWO_VALIDATE_CHUNK_LENGTH(length, VMAP, 6);
+ unsigned int type = GetU4();
+ unsigned int dims = GetU2();
+
+ VMapEntry *base;
+
+ // read the name of the vertex map
+ std::string name;
+ GetS0(name, length);
+
+ switch (type) {
+ case AI_LWO_TXUV:
+ if (dims != 2) {
+ ASSIMP_LOG_WARN("LWO2: Skipping UV channel \'", name, "\' with !2 components");
+ return;
+ }
+ base = FindEntry(mCurLayer->mUVChannels, name, perPoly);
+ break;
+ case AI_LWO_WGHT:
+ case AI_LWO_MNVW:
+ if (dims != 1) {
+ ASSIMP_LOG_WARN("LWO2: Skipping Weight Channel \'", name, "\' with !1 components");
+ return;
+ }
+ base = FindEntry((type == AI_LWO_WGHT ? mCurLayer->mWeightChannels : mCurLayer->mSWeightChannels), name, perPoly);
+ break;
+ case AI_LWO_RGB:
+ case AI_LWO_RGBA:
+ if (dims != 3 && dims != 4) {
+ ASSIMP_LOG_WARN("LWO2: Skipping Color Map \'", name, "\' with a dimension > 4 or < 3");
+ return;
+ }
+ base = FindEntry(mCurLayer->mVColorChannels, name, perPoly);
+ break;
+
+ case AI_LWO_MODO_NORM:
+ /* This is a non-standard extension chunk used by Luxology's MODO.
+ * It stores per-vertex normals. This VMAP exists just once, has
+ * 3 dimensions and is btw extremely beautiful.
+ */
+ if (name != "vert_normals" || dims != 3 || mCurLayer->mNormals.name.length())
+ return;
+
+ ASSIMP_LOG_INFO("Processing non-standard extension: MODO VMAP.NORM.vert_normals");
+
+ mCurLayer->mNormals.name = name;
+ base = &mCurLayer->mNormals;
+ break;
+
+ case AI_LWO_PICK: /* these VMAPs are just silently dropped */
+ case AI_LWO_MORF:
+ case AI_LWO_SPOT:
+ return;
+
+ default:
+ if (name == "APS.Level") {
+ // XXX handle this (seems to be subdivision-related).
+ }
+ ASSIMP_LOG_WARN("LWO2: Skipping unknown VMAP/VMAD channel \'", name, "\'");
+ return;
+ };
+ base->Allocate((unsigned int)mCurLayer->mTempPoints.size());
+
+ // now read all entries in the map
+ type = std::min(dims, base->dims);
+ const unsigned int diff = (dims - type) << 2u;
+
+ LWO::FaceList &list = mCurLayer->mFaces;
+ LWO::PointList &pointList = mCurLayer->mTempPoints;
+ LWO::ReferrerList &refList = mCurLayer->mPointReferrers;
+
+ const unsigned int numPoints = (unsigned int)pointList.size();
+ const unsigned int numFaces = (unsigned int)list.size();
+
+ while (mFileBuffer < end) {
+
+ unsigned int idx = ReadVSizedIntLWO2(mFileBuffer) + mCurLayer->mPointIDXOfs;
+ if (idx >= numPoints) {
+ ASSIMP_LOG_WARN("LWO2: Failure evaluating VMAP/VMAD entry \'", name, "\', vertex index is out of range");
+ mFileBuffer += base->dims << 2u;
+ continue;
+ }
+ if (perPoly) {
+ unsigned int polyIdx = ReadVSizedIntLWO2(mFileBuffer) + mCurLayer->mFaceIDXOfs;
+ if (base->abAssigned[idx]) {
+ // we have already a VMAP entry for this vertex - thus
+ // we need to duplicate the corresponding polygon.
+ if (polyIdx >= numFaces) {
+ ASSIMP_LOG_WARN("LWO2: Failure evaluating VMAD entry \'", name, "\', polygon index is out of range");
+ mFileBuffer += base->dims << 2u;
+ continue;
+ }
+
+ LWO::Face &src = list[polyIdx];
+
+ // generate a new unique vertex for the corresponding index - but only
+ // if we can find the index in the face
+ bool had = false;
+ for (unsigned int i = 0; i < src.mNumIndices; ++i) {
+
+ unsigned int srcIdx = src.mIndices[i], tmp = idx;
+ do {
+ if (tmp == srcIdx)
+ break;
+ } while ((tmp = refList[tmp]) != UINT_MAX);
+ if (tmp == UINT_MAX) {
+ continue;
+ }
+
+ had = true;
+ refList.resize(refList.size() + 1, UINT_MAX);
+
+ idx = (unsigned int)pointList.size();
+ src.mIndices[i] = (unsigned int)pointList.size();
+
+ // store the index of the new vertex in the old vertex
+ // so we get a single linked list we can traverse in
+ // only one direction
+ AddToSingleLinkedList(refList, srcIdx, src.mIndices[i]);
+ pointList.push_back(pointList[srcIdx]);
+
+ CreateNewEntry(mCurLayer->mVColorChannels, srcIdx);
+ CreateNewEntry(mCurLayer->mUVChannels, srcIdx);
+ CreateNewEntry(mCurLayer->mWeightChannels, srcIdx);
+ CreateNewEntry(mCurLayer->mSWeightChannels, srcIdx);
+ CreateNewEntry(mCurLayer->mNormals, srcIdx);
+ }
+ if (!had) {
+ ASSIMP_LOG_WARN("LWO2: Failure evaluating VMAD entry \'", name, "\', vertex index wasn't found in that polygon");
+ ai_assert(had);
+ }
+ }
+ }
+
+ std::unique_ptr<float[]> temp(new float[type]);
+ for (unsigned int l = 0; l < type; ++l)
+ temp[l] = GetF4();
+
+ DoRecursiveVMAPAssignment(base, type, idx, temp.get());
+ mFileBuffer += diff;
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+// Load LWO2 clip
+void LWOImporter::LoadLWO2Clip(unsigned int length) {
+ AI_LWO_VALIDATE_CHUNK_LENGTH(length, CLIP, 10);
+
+ mClips.push_back(LWO::Clip());
+ LWO::Clip &clip = mClips.back();
+
+ // first - get the index of the clip
+ clip.idx = GetU4();
+
+ IFF::SubChunkHeader head = IFF::LoadSubChunk(mFileBuffer);
+ switch (head.type) {
+ case AI_LWO_STIL:
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, STIL, 1);
+
+ // "Normal" texture
+ GetS0(clip.path, head.length);
+ clip.type = Clip::STILL;
+ break;
+
+ case AI_LWO_ISEQ:
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, ISEQ, 16);
+ // Image sequence. We'll later take the first.
+ {
+ uint8_t digits = GetU1();
+ mFileBuffer++;
+ int16_t offset = GetU2();
+ mFileBuffer += 4;
+ int16_t start = GetU2();
+ mFileBuffer += 4;
+
+ std::string s;
+ std::ostringstream ss;
+ GetS0(s, head.length);
+
+ head.length -= (uint16_t)s.length() + 1;
+ ss << s;
+ ss << std::setw(digits) << offset + start;
+ GetS0(s, head.length);
+ ss << s;
+ clip.path = ss.str();
+ clip.type = Clip::SEQ;
+ }
+ break;
+
+ case AI_LWO_STCC:
+ ASSIMP_LOG_WARN("LWO2: Color shifted images are not supported");
+ break;
+
+ case AI_LWO_ANIM:
+ ASSIMP_LOG_WARN("LWO2: Animated textures are not supported");
+ break;
+
+ case AI_LWO_XREF:
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, XREF, 4);
+
+ // Just a cross-reference to another CLIp
+ clip.type = Clip::REF;
+ clip.clipRef = GetU4();
+ break;
+
+ case AI_LWO_NEGA:
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, NEGA, 2);
+ clip.negate = (0 != GetU2());
+ break;
+
+ default:
+ ASSIMP_LOG_WARN("LWO2: Encountered unknown CLIP sub-chunk");
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+// Load envelope description
+void LWOImporter::LoadLWO2Envelope(unsigned int length) {
+ LE_NCONST uint8_t *const end = mFileBuffer + length;
+ AI_LWO_VALIDATE_CHUNK_LENGTH(length, ENVL, 4);
+
+ mEnvelopes.push_back(LWO::Envelope());
+ LWO::Envelope &envelope = mEnvelopes.back();
+
+ // Get the index of the envelope
+ envelope.index = ReadVSizedIntLWO2(mFileBuffer);
+
+ // It looks like there might be an extra U4 right after the index,
+ // at least in modo (LXOB) files: we'll ignore it if it's zero,
+ // otherwise it represents the start of a subchunk, so we backtrack.
+ if (mIsLXOB) {
+ uint32_t extra = GetU4();
+ if (extra) {
+ mFileBuffer -= 4;
+ }
+ }
+
+ // ... and read all subchunks
+ while (true) {
+ if (mFileBuffer + 6 >= end) break;
+ LE_NCONST IFF::SubChunkHeader head = IFF::LoadSubChunk(mFileBuffer);
+
+ if (mFileBuffer + head.length > end)
+ throw DeadlyImportError("LWO2: Invalid envelope chunk length");
+
+ uint8_t *const next = mFileBuffer + head.length;
+ switch (head.type) {
+ // Type & representation of the envelope
+ case AI_LWO_TYPE:
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, TYPE, 2);
+ mFileBuffer++; // skip user format
+
+ // Determine type of envelope
+ envelope.type = (LWO::EnvelopeType)*mFileBuffer;
+ ++mFileBuffer;
+ break;
+
+ // precondition
+ case AI_LWO_PRE:
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, PRE, 2);
+ envelope.pre = (LWO::PrePostBehaviour)GetU2();
+ break;
+
+ // postcondition
+ case AI_LWO_POST:
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, POST, 2);
+ envelope.post = (LWO::PrePostBehaviour)GetU2();
+ break;
+
+ // keyframe
+ case AI_LWO_KEY: {
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, KEY, 8);
+
+ envelope.keys.push_back(LWO::Key());
+ LWO::Key &key = envelope.keys.back();
+
+ key.time = GetF4();
+ key.value = GetF4();
+ break;
+ }
+
+ // interval interpolation
+ case AI_LWO_SPAN: {
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, SPAN, 4);
+ if (envelope.keys.size() < 2)
+ ASSIMP_LOG_WARN("LWO2: Unexpected SPAN chunk");
+ else {
+ LWO::Key &key = envelope.keys.back();
+ switch (GetU4()) {
+ case AI_LWO_STEP:
+ key.inter = LWO::IT_STEP;
+ break;
+ case AI_LWO_LINE:
+ key.inter = LWO::IT_LINE;
+ break;
+ case AI_LWO_TCB:
+ key.inter = LWO::IT_TCB;
+ break;
+ case AI_LWO_HERM:
+ key.inter = LWO::IT_HERM;
+ break;
+ case AI_LWO_BEZI:
+ key.inter = LWO::IT_BEZI;
+ break;
+ case AI_LWO_BEZ2:
+ key.inter = LWO::IT_BEZ2;
+ break;
+ default:
+ ASSIMP_LOG_WARN("LWO2: Unknown interval interpolation mode");
+ };
+
+ // todo ... read params
+ }
+ break;
+ }
+
+ default:
+ ASSIMP_LOG_WARN("LWO2: Encountered unknown ENVL subchunk");
+ break;
+ }
+ // regardless how much we did actually read, go to the next chunk
+ mFileBuffer = next;
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+// Load file - master function
+void LWOImporter::LoadLWO2File() {
+ bool skip = false;
+
+ LE_NCONST uint8_t *const end = mFileBuffer + fileSize;
+ unsigned int iUnnamed = 0;
+ while (true) {
+ if (mFileBuffer + sizeof(IFF::ChunkHeader) > end) break;
+ const IFF::ChunkHeader head = IFF::LoadChunk(mFileBuffer);
+
+ if (mFileBuffer + head.length > end) {
+ throw DeadlyImportError("LWO2: Chunk length points behind the file");
+ break;
+ }
+ uint8_t *const next = mFileBuffer + head.length;
+
+ if (!head.length) {
+ mFileBuffer = next;
+ continue;
+ }
+
+ switch (head.type) {
+ // new layer
+ case AI_LWO_LAYR: {
+ // add a new layer to the list ....
+ mLayers->push_back(LWO::Layer());
+ LWO::Layer &layer = mLayers->back();
+ mCurLayer = &layer;
+
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, LAYR, 16);
+
+ // layer index.
+ layer.mIndex = GetU2();
+
+ // Continue loading this layer or ignore it? Check the layer index property
+ if (UINT_MAX != configLayerIndex && (configLayerIndex - 1) != layer.mIndex) {
+ skip = true;
+ } else
+ skip = false;
+
+ // pivot point
+ mFileBuffer += 2; /* unknown */
+ mCurLayer->mPivot.x = GetF4();
+ mCurLayer->mPivot.y = GetF4();
+ mCurLayer->mPivot.z = GetF4();
+ GetS0(layer.mName, head.length - 16);
+
+ // if the name is empty, generate a default name
+ if (layer.mName.empty()) {
+ char buffer[128]; // should be sufficiently large
+ ::ai_snprintf(buffer, 128, "Layer_%i", iUnnamed++);
+ layer.mName = buffer;
+ }
+
+ // load this layer or ignore it? Check the layer name property
+ if (configLayerName.length() && configLayerName != layer.mName) {
+ skip = true;
+ } else
+ hasNamedLayer = true;
+
+ // optional: parent of this layer
+ if (mFileBuffer + 2 <= next)
+ layer.mParent = GetU2();
+ else
+ layer.mParent = (uint16_t) -1;
+
+ // Set layer skip parameter
+ layer.skip = skip;
+
+ break;
+ }
+
+ // vertex list
+ case AI_LWO_PNTS: {
+ if (skip)
+ break;
+
+ unsigned int old = (unsigned int)mCurLayer->mTempPoints.size();
+ LoadLWOPoints(head.length);
+ mCurLayer->mPointIDXOfs = old;
+ break;
+ }
+ // vertex tags
+ case AI_LWO_VMAD:
+ if (mCurLayer->mFaces.empty()) {
+ ASSIMP_LOG_WARN("LWO2: Unexpected VMAD chunk");
+ break;
+ }
+ // --- intentionally no break here
+ case AI_LWO_VMAP: {
+ if (skip)
+ break;
+
+ if (mCurLayer->mTempPoints.empty())
+ ASSIMP_LOG_WARN("LWO2: Unexpected VMAP chunk");
+ else
+ LoadLWO2VertexMap(head.length, head.type == AI_LWO_VMAD);
+ break;
+ }
+ // face list
+ case AI_LWO_POLS: {
+ if (skip)
+ break;
+
+ unsigned int old = (unsigned int)mCurLayer->mFaces.size();
+ LoadLWO2Polygons(head.length);
+ mCurLayer->mFaceIDXOfs = old;
+ break;
+ }
+ // polygon tags
+ case AI_LWO_PTAG: {
+ if (skip)
+ break;
+
+ if (mCurLayer->mFaces.empty()) {
+ ASSIMP_LOG_WARN("LWO2: Unexpected PTAG");
+ } else {
+ LoadLWO2PolygonTags(head.length);
+ }
+ break;
+ }
+ // list of tags
+ case AI_LWO_TAGS: {
+ if (!mTags->empty()) {
+ ASSIMP_LOG_WARN("LWO2: SRFS chunk encountered twice");
+ } else {
+ LoadLWOTags(head.length);
+ }
+ break;
+ }
+
+ // surface chunk
+ case AI_LWO_SURF: {
+ LoadLWO2Surface(head.length);
+ break;
+ }
+
+ // clip chunk
+ case AI_LWO_CLIP: {
+ LoadLWO2Clip(head.length);
+ break;
+ }
+
+ // envelope chunk
+ case AI_LWO_ENVL: {
+ LoadLWO2Envelope(head.length);
+ break;
+ }
+ }
+ mFileBuffer = next;
+ }
+}
+
+#endif // !! ASSIMP_BUILD_NO_LWO_IMPORTER
diff --git a/libs/assimp/code/AssetLib/LWO/LWOLoader.h b/libs/assimp/code/AssetLib/LWO/LWOLoader.h
new file mode 100644
index 0000000..f3add53
--- /dev/null
+++ b/libs/assimp/code/AssetLib/LWO/LWOLoader.h
@@ -0,0 +1,468 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2022, assimp team
+
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the
+following conditions are met:
+
+* Redistributions of source code must retain the above
+ copyright notice, this list of conditions and the
+ following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+ copyright notice, this list of conditions and the
+ following disclaimer in the documentation and/or other
+ materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+ contributors may be used to endorse or promote products
+ derived from this software without specific prior
+ written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+
+/** @file Declaration of the LWO importer class. */
+#pragma once
+#ifndef AI_LWOLOADER_H_INCLUDED
+#define AI_LWOLOADER_H_INCLUDED
+
+#include "LWOFileData.h"
+#include <assimp/BaseImporter.h>
+#include <assimp/material.h>
+#include <assimp/DefaultLogger.hpp>
+
+#include <map>
+
+struct aiTexture;
+struct aiNode;
+struct aiMaterial;
+
+namespace Assimp {
+using namespace LWO;
+
+// ---------------------------------------------------------------------------
+/** Class to load LWO files.
+ *
+ * @note Methods named "xxxLWO2[xxx]" are used with the newer LWO2 format.
+ * Methods named "xxxLWOB[xxx]" are used with the older LWOB format.
+ * Methods named "xxxLWO[xxx]" are used with both formats.
+ * Methods named "xxx" are used to preprocess the loaded data -
+ * they aren't specific to one format version
+*/
+// ---------------------------------------------------------------------------
+class LWOImporter : public BaseImporter {
+public:
+ LWOImporter();
+ ~LWOImporter() override;
+
+ // -------------------------------------------------------------------
+ /** Returns whether the class can handle the format of the given file.
+ * See BaseImporter::CanRead() for details.
+ */
+ bool CanRead(const std::string &pFile, IOSystem *pIOHandler,
+ bool checkSig) const override;
+
+ // -------------------------------------------------------------------
+ /** Called prior to ReadFile().
+ * The function is a request to the importer to update its configuration
+ * basing on the Importer's configuration property list.
+ */
+ void SetupProperties(const Importer *pImp) override;
+
+protected:
+ // -------------------------------------------------------------------
+ // Get list of supported extensions
+ const aiImporterDesc *GetInfo() const override;
+
+ // -------------------------------------------------------------------
+ /** Imports the given file into the given scene structure.
+ * See BaseImporter::InternReadFile() for details
+ */
+ void InternReadFile(const std::string &pFile, aiScene *pScene,
+ IOSystem *pIOHandler) override;
+
+private:
+ // -------------------------------------------------------------------
+ /** Loads a LWO file in the older LWOB format (LW < 6)
+ */
+ void LoadLWOBFile();
+
+ // -------------------------------------------------------------------
+ /** Loads a LWO file in the newer LWO2 format (LW >= 6)
+ */
+ void LoadLWO2File();
+
+ // -------------------------------------------------------------------
+ /** Parsing functions used for all file format versions
+ */
+ inline void GetS0(std::string &out, unsigned int max);
+ inline float GetF4();
+ inline uint32_t GetU4();
+ inline uint16_t GetU2();
+ inline uint8_t GetU1();
+
+ // -------------------------------------------------------------------
+ /** Loads a surface chunk from an LWOB file
+ * @param size Maximum size to be read, in bytes.
+ */
+ void LoadLWOBSurface(unsigned int size);
+
+ // -------------------------------------------------------------------
+ /** Loads a surface chunk from an LWO2 file
+ * @param size Maximum size to be read, in bytes.
+ */
+ void LoadLWO2Surface(unsigned int size);
+
+ // -------------------------------------------------------------------
+ /** Loads a texture block from a LWO2 file.
+ * @param size Maximum size to be read, in bytes.
+ * @param head Header of the SUF.BLOK header
+ */
+ void LoadLWO2TextureBlock(LE_NCONST IFF::SubChunkHeader *head,
+ unsigned int size);
+
+ // -------------------------------------------------------------------
+ /** Loads a shader block from a LWO2 file.
+ * @param size Maximum size to be read, in bytes.
+ * @param head Header of the SUF.BLOK header
+ */
+ void LoadLWO2ShaderBlock(LE_NCONST IFF::SubChunkHeader *head,
+ unsigned int size);
+
+ // -------------------------------------------------------------------
+ /** Loads an image map from a LWO2 file
+ * @param size Maximum size to be read, in bytes.
+ * @param tex Texture object to be filled
+ */
+ void LoadLWO2ImageMap(unsigned int size, LWO::Texture &tex);
+ void LoadLWO2Gradient(unsigned int size, LWO::Texture &tex);
+ void LoadLWO2Procedural(unsigned int size, LWO::Texture &tex);
+
+ // loads the header - used by thethree functions above
+ void LoadLWO2TextureHeader(unsigned int size, LWO::Texture &tex);
+
+ // -------------------------------------------------------------------
+ /** Loads the LWO tag list from the file
+ * @param size Maximum size to be read, in bytes.
+ */
+ void LoadLWOTags(unsigned int size);
+
+ // -------------------------------------------------------------------
+ /** Load polygons from a POLS chunk
+ * @param length Size of the chunk
+ */
+ void LoadLWO2Polygons(unsigned int length);
+ void LoadLWOBPolygons(unsigned int length);
+
+ // -------------------------------------------------------------------
+ /** Load polygon tags from a PTAG chunk
+ * @param length Size of the chunk
+ */
+ void LoadLWO2PolygonTags(unsigned int length);
+
+ // -------------------------------------------------------------------
+ /** Load a vertex map from a VMAP/VMAD chunk
+ * @param length Size of the chunk
+ * @param perPoly Operate on per-polygon base?
+ */
+ void LoadLWO2VertexMap(unsigned int length, bool perPoly);
+
+ // -------------------------------------------------------------------
+ /** Load polygons from a PNTS chunk
+ * @param length Size of the chunk
+ */
+ void LoadLWOPoints(unsigned int length);
+
+ // -------------------------------------------------------------------
+ /** Load a clip from a CLIP chunk
+ * @param length Size of the chunk
+ */
+ void LoadLWO2Clip(unsigned int length);
+
+ // -------------------------------------------------------------------
+ /** Load an envelope from an EVL chunk
+ * @param length Size of the chunk
+ */
+ void LoadLWO2Envelope(unsigned int length);
+
+ // -------------------------------------------------------------------
+ /** Count vertices and faces in a LWOB/LWO2 file
+ */
+ void CountVertsAndFacesLWO2(unsigned int &verts,
+ unsigned int &faces,
+ uint16_t *&cursor,
+ const uint16_t *const end,
+ unsigned int max = UINT_MAX);
+
+ void CountVertsAndFacesLWOB(unsigned int &verts,
+ unsigned int &faces,
+ LE_NCONST uint16_t *&cursor,
+ const uint16_t *const end,
+ unsigned int max = UINT_MAX);
+
+ // -------------------------------------------------------------------
+ /** Read vertices and faces in a LWOB/LWO2 file
+ */
+ void CopyFaceIndicesLWO2(LWO::FaceList::iterator &it,
+ uint16_t *&cursor,
+ const uint16_t *const end);
+
+ // -------------------------------------------------------------------
+ void CopyFaceIndicesLWOB(LWO::FaceList::iterator &it,
+ LE_NCONST uint16_t *&cursor,
+ const uint16_t *const end,
+ unsigned int max = UINT_MAX);
+
+ // -------------------------------------------------------------------
+ /** Resolve the tag and surface lists that have been loaded.
+ * Generates the mMapping table.
+ */
+ void ResolveTags();
+
+ // -------------------------------------------------------------------
+ /** Resolve the clip list that has been loaded.
+ * Replaces clip references with real clips.
+ */
+ void ResolveClips();
+
+ // -------------------------------------------------------------------
+ /** Add a texture list to an output material description.
+ *
+ * @param pcMat Output material
+ * @param in Input texture list
+ * @param type Type identifier of the texture list
+ */
+ bool HandleTextures(aiMaterial *pcMat, const TextureList &in,
+ aiTextureType type);
+
+ // -------------------------------------------------------------------
+ /** Adjust a texture path
+ */
+ void AdjustTexturePath(std::string &out);
+
+ // -------------------------------------------------------------------
+ /** Convert a LWO surface description to an ASSIMP material
+ */
+ void ConvertMaterial(const LWO::Surface &surf, aiMaterial *pcMat);
+
+ // -------------------------------------------------------------------
+ /** Get a list of all UV/VC channels required by a specific surface.
+ *
+ * @param surf Working surface
+ * @param layer Working layer
+ * @param out Output list. The members are indices into the
+ * UV/VC channel lists of the layer
+ */
+ void FindUVChannels(/*const*/ LWO::Surface &surf,
+ LWO::SortedRep &sorted,
+ /*const*/ LWO::Layer &layer,
+ unsigned int out[AI_MAX_NUMBER_OF_TEXTURECOORDS]);
+
+ // -------------------------------------------------------------------
+ char FindUVChannels(LWO::TextureList &list,
+ LWO::Layer &layer, LWO::UVChannel &uv, unsigned int next);
+
+ // -------------------------------------------------------------------
+ void FindVCChannels(const LWO::Surface &surf,
+ LWO::SortedRep &sorted,
+ const LWO::Layer &layer,
+ unsigned int out[AI_MAX_NUMBER_OF_COLOR_SETS]);
+
+ // -------------------------------------------------------------------
+ /** Generate the final node graph
+ * Unused nodes are deleted.
+ * @param apcNodes Flat list of nodes
+ */
+ void GenerateNodeGraph(std::map<uint16_t, aiNode *> &apcNodes);
+
+ // -------------------------------------------------------------------
+ /** Add children to a node
+ * @param node Node to become a father
+ * @param parent Index of the node
+ * @param apcNodes Flat list of nodes - used nodes are set to nullptr.
+ */
+ void AddChildren(aiNode *node, uint16_t parent,
+ std::vector<aiNode *> &apcNodes);
+
+ // -------------------------------------------------------------------
+ /** Read a variable sized integer
+ * @param inout Input and output buffer
+ */
+ int ReadVSizedIntLWO2(uint8_t *&inout);
+
+ // -------------------------------------------------------------------
+ /** Assign a value from a VMAP to a vertex and all vertices
+ * attached to it.
+ * @param base VMAP destination data
+ * @param numRead Number of float's to be read
+ * @param idx Absolute index of the first vertex
+ * @param data Value of the VMAP to be assigned - read numRead
+ * floats from this array.
+ */
+ void DoRecursiveVMAPAssignment(VMapEntry *base, unsigned int numRead,
+ unsigned int idx, float *data);
+
+ // -------------------------------------------------------------------
+ /** Compute normal vectors for a mesh
+ * @param mesh Input mesh
+ * @param smoothingGroups Smoothing-groups-per-face array
+ * @param surface Surface for the mesh
+ */
+ void ComputeNormals(aiMesh *mesh, const std::vector<unsigned int> &smoothingGroups,
+ const LWO::Surface &surface);
+
+ // -------------------------------------------------------------------
+ /** Setup a new texture after the corresponding chunk was
+ * encountered in the file.
+ * @param list Texture list
+ * @param size Maximum number of bytes to be read
+ * @return Pointer to new texture
+ */
+ LWO::Texture *SetupNewTextureLWOB(LWO::TextureList &list,
+ unsigned int size);
+
+protected:
+ /** true if the file is a LWO2 file*/
+ bool mIsLWO2;
+
+ /** true if the file is a LXOB file*/
+ bool mIsLXOB;
+
+ /** Temporary list of layers from the file */
+ LayerList *mLayers;
+
+ /** Pointer to the current layer */
+ LWO::Layer *mCurLayer;
+
+ /** Temporary tag list from the file */
+ TagList *mTags;
+
+ /** Mapping table to convert from tag to surface indices.
+ UINT_MAX indicates that a no corresponding surface is available */
+ TagMappingTable *mMapping;
+
+ /** Temporary surface list from the file */
+ SurfaceList *mSurfaces;
+
+ /** Temporary clip list from the file */
+ ClipList mClips;
+
+ /** Temporary envelope list from the file */
+ EnvelopeList mEnvelopes;
+
+ /** file buffer */
+ uint8_t *mFileBuffer;
+
+ /** Size of the file, in bytes */
+ unsigned int fileSize;
+
+ /** Output scene */
+ aiScene *mScene;
+
+ /** Configuration option: speed flag set? */
+ bool configSpeedFlag;
+
+ /** Configuration option: index of layer to be loaded */
+ unsigned int configLayerIndex;
+
+ /** Configuration option: name of layer to be loaded */
+ std::string configLayerName;
+
+ /** True if we have a named layer */
+ bool hasNamedLayer;
+};
+
+// ------------------------------------------------------------------------------------------------
+inline float LWOImporter::GetF4() {
+ float f;
+ ::memcpy(&f, mFileBuffer, 4);
+ mFileBuffer += 4;
+ AI_LSWAP4(f);
+ return f;
+}
+
+// ------------------------------------------------------------------------------------------------
+inline uint32_t LWOImporter::GetU4() {
+ uint32_t f;
+ ::memcpy(&f, mFileBuffer, 4);
+ mFileBuffer += 4;
+ AI_LSWAP4(f);
+ return f;
+}
+
+// ------------------------------------------------------------------------------------------------
+inline uint16_t LWOImporter::GetU2() {
+ uint16_t f;
+ ::memcpy(&f, mFileBuffer, 2);
+ mFileBuffer += 2;
+ AI_LSWAP2(f);
+ return f;
+}
+
+// ------------------------------------------------------------------------------------------------
+inline uint8_t LWOImporter::GetU1() {
+ return *mFileBuffer++;
+}
+
+// ------------------------------------------------------------------------------------------------
+inline int LWOImporter::ReadVSizedIntLWO2(uint8_t *&inout) {
+ int i;
+ int c = *inout;
+ inout++;
+ if (c != 0xFF) {
+ i = c << 8;
+ c = *inout;
+ inout++;
+ i |= c;
+ } else {
+ c = *inout;
+ inout++;
+ i = c << 16;
+ c = *inout;
+ inout++;
+ i |= c << 8;
+ c = *inout;
+ inout++;
+ i |= c;
+ }
+ return i;
+}
+
+// ------------------------------------------------------------------------------------------------
+inline void LWOImporter::GetS0(std::string &out, unsigned int max) {
+ unsigned int iCursor = 0;
+ const char *sz = (const char *)mFileBuffer;
+ while (*mFileBuffer) {
+ if (++iCursor > max) {
+ ASSIMP_LOG_WARN("LWO: Invalid file, string is is too long");
+ break;
+ }
+ ++mFileBuffer;
+ }
+ size_t len = (size_t)((const char *)mFileBuffer - sz);
+ out = std::string(sz, len);
+ mFileBuffer += (len & 0x1 ? 1 : 2);
+}
+
+} // end of namespace Assimp
+
+#endif // AI_LWOIMPORTER_H_INCLUDED
diff --git a/libs/assimp/code/AssetLib/LWO/LWOMaterial.cpp b/libs/assimp/code/AssetLib/LWO/LWOMaterial.cpp
new file mode 100644
index 0000000..b6f0bcc
--- /dev/null
+++ b/libs/assimp/code/AssetLib/LWO/LWOMaterial.cpp
@@ -0,0 +1,844 @@
+/*
+---------------------------------------------------------------------------
+Open Asset Import Library (assimp)
+---------------------------------------------------------------------------
+
+Copyright (c) 2006-2022, assimp team
+
+
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the following
+conditions are met:
+
+* Redistributions of source code must retain the above
+ copyright notice, this list of conditions and the
+ following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+ copyright notice, this list of conditions and the
+ following disclaimer in the documentation and/or other
+ materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+ contributors may be used to endorse or promote products
+ derived from this software without specific prior
+ written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+---------------------------------------------------------------------------
+*/
+
+/** @file Implementation of the material oart of the LWO importer class */
+
+#ifndef ASSIMP_BUILD_NO_LWO_IMPORTER
+
+// internal headers
+#include "LWOLoader.h"
+#include <assimp/ByteSwapper.h>
+
+using namespace Assimp;
+
+// ------------------------------------------------------------------------------------------------
+template <class T>
+T lerp(const T &one, const T &two, float val) {
+ return one + (two - one) * val;
+}
+
+// ------------------------------------------------------------------------------------------------
+// Convert a lightwave mapping mode to our's
+inline aiTextureMapMode GetMapMode(LWO::Texture::Wrap in) {
+ switch (in) {
+ case LWO::Texture::REPEAT:
+ return aiTextureMapMode_Wrap;
+
+ case LWO::Texture::MIRROR:
+ return aiTextureMapMode_Mirror;
+
+ case LWO::Texture::RESET:
+ ASSIMP_LOG_WARN("LWO2: Unsupported texture map mode: RESET");
+
+ // fall though here
+ case LWO::Texture::EDGE:
+ return aiTextureMapMode_Clamp;
+ }
+ return (aiTextureMapMode)0;
+}
+
+// ------------------------------------------------------------------------------------------------
+bool LWOImporter::HandleTextures(aiMaterial *pcMat, const TextureList &in, aiTextureType type) {
+ ai_assert(nullptr != pcMat);
+
+ unsigned int cur = 0, temp = 0;
+ aiString s;
+ bool ret = false;
+
+ for (const auto &texture : in) {
+ if (!texture.enabled || !texture.bCanUse)
+ continue;
+ ret = true;
+
+ // Convert lightwave's mapping modes to ours. We let them
+ // as they are, the GenUVcoords step will compute UV
+ // channels if they're not there.
+
+ aiTextureMapping mapping = aiTextureMapping_OTHER;
+ switch (texture.mapMode) {
+ case LWO::Texture::Planar:
+ mapping = aiTextureMapping_PLANE;
+ break;
+ case LWO::Texture::Cylindrical:
+ mapping = aiTextureMapping_CYLINDER;
+ break;
+ case LWO::Texture::Spherical:
+ mapping = aiTextureMapping_SPHERE;
+ break;
+ case LWO::Texture::Cubic:
+ mapping = aiTextureMapping_BOX;
+ break;
+ case LWO::Texture::FrontProjection:
+ ASSIMP_LOG_ERROR("LWO2: Unsupported texture mapping: FrontProjection");
+ mapping = aiTextureMapping_OTHER;
+ break;
+ case LWO::Texture::UV: {
+ if (UINT_MAX == texture.mRealUVIndex) {
+ // We have no UV index for this texture, so we can't display it
+ continue;
+ }
+
+ // add the UV source index
+ temp = texture.mRealUVIndex;
+ pcMat->AddProperty<int>((int *)&temp, 1, AI_MATKEY_UVWSRC(type, cur));
+
+ mapping = aiTextureMapping_UV;
+ } break;
+ default:
+ ai_assert(false);
+ };
+
+ if (mapping != aiTextureMapping_UV) {
+ // Setup the main axis
+ aiVector3D v;
+ switch (texture.majorAxis) {
+ case Texture::AXIS_X:
+ v = aiVector3D(1.0, 0.0, 0.0);
+ break;
+ case Texture::AXIS_Y:
+ v = aiVector3D(0.0, 1.0, 0.0);
+ break;
+ default: // case Texture::AXIS_Z:
+ v = aiVector3D(0.0, 0.0, 1.0);
+ break;
+ }
+
+ pcMat->AddProperty(&v, 1, AI_MATKEY_TEXMAP_AXIS(type, cur));
+
+ // Setup UV scalings for cylindric and spherical projections
+ if (mapping == aiTextureMapping_CYLINDER || mapping == aiTextureMapping_SPHERE) {
+ aiUVTransform trafo;
+ trafo.mScaling.x = texture.wrapAmountW;
+ trafo.mScaling.y = texture.wrapAmountH;
+
+ static_assert(sizeof(aiUVTransform) / sizeof(ai_real) == 5, "sizeof(aiUVTransform)/sizeof(ai_real) == 5");
+ pcMat->AddProperty(&trafo, 1, AI_MATKEY_UVTRANSFORM(type, cur));
+ }
+ ASSIMP_LOG_VERBOSE_DEBUG("LWO2: Setting up non-UV mapping");
+ }
+
+ // The older LWOB format does not use indirect references to clips.
+ // The file name of a texture is directly specified in the tex chunk.
+ if (mIsLWO2) {
+ // find the corresponding clip (take the last one if multiple
+ // share the same index)
+ ClipList::iterator end = mClips.end(), candidate = end;
+ temp = texture.mClipIdx;
+ for (ClipList::iterator clip = mClips.begin(); clip != end; ++clip) {
+ if ((*clip).idx == temp) {
+ candidate = clip;
+ }
+ }
+ if (candidate == end) {
+ ASSIMP_LOG_ERROR("LWO2: Clip index is out of bounds");
+ temp = 0;
+
+ // fixme: apparently some LWO files shipping with Doom3 don't
+ // have clips at all ... check whether that's true or whether
+ // it's a bug in the loader.
+
+ s.Set("$texture.png");
+
+ //continue;
+ } else {
+ if (Clip::UNSUPPORTED == (*candidate).type) {
+ ASSIMP_LOG_ERROR("LWO2: Clip type is not supported");
+ continue;
+ }
+ AdjustTexturePath((*candidate).path);
+ s.Set((*candidate).path);
+
+ // Additional image settings
+ int flags = 0;
+ if ((*candidate).negate) {
+ flags |= aiTextureFlags_Invert;
+ }
+ pcMat->AddProperty(&flags, 1, AI_MATKEY_TEXFLAGS(type, cur));
+ }
+ } else {
+ std::string ss = texture.mFileName;
+ if (!ss.length()) {
+ ASSIMP_LOG_WARN("LWOB: Empty file name");
+ continue;
+ }
+ AdjustTexturePath(ss);
+ s.Set(ss);
+ }
+ pcMat->AddProperty(&s, AI_MATKEY_TEXTURE(type, cur));
+
+ // add the blend factor
+ pcMat->AddProperty<float>(&texture.mStrength, 1, AI_MATKEY_TEXBLEND(type, cur));
+
+ // add the blend operation
+ switch (texture.blendType) {
+ case LWO::Texture::Normal:
+ case LWO::Texture::Multiply:
+ temp = (unsigned int)aiTextureOp_Multiply;
+ break;
+
+ case LWO::Texture::Subtractive:
+ case LWO::Texture::Difference:
+ temp = (unsigned int)aiTextureOp_Subtract;
+ break;
+
+ case LWO::Texture::Divide:
+ temp = (unsigned int)aiTextureOp_Divide;
+ break;
+
+ case LWO::Texture::Additive:
+ temp = (unsigned int)aiTextureOp_Add;
+ break;
+
+ default:
+ temp = (unsigned int)aiTextureOp_Multiply;
+ ASSIMP_LOG_WARN("LWO2: Unsupported texture blend mode: alpha or displacement");
+ }
+ // Setup texture operation
+ pcMat->AddProperty<int>((int *)&temp, 1, AI_MATKEY_TEXOP(type, cur));
+
+ // setup the mapping mode
+ int mapping_ = static_cast<int>(mapping);
+ pcMat->AddProperty<int>(&mapping_, 1, AI_MATKEY_MAPPING(type, cur));
+
+ // add the u-wrapping
+ temp = (unsigned int)GetMapMode(texture.wrapModeWidth);
+ pcMat->AddProperty<int>((int *)&temp, 1, AI_MATKEY_MAPPINGMODE_U(type, cur));
+
+ // add the v-wrapping
+ temp = (unsigned int)GetMapMode(texture.wrapModeHeight);
+ pcMat->AddProperty<int>((int *)&temp, 1, AI_MATKEY_MAPPINGMODE_V(type, cur));
+
+ ++cur;
+ }
+ return ret;
+}
+
+// ------------------------------------------------------------------------------------------------
+void LWOImporter::ConvertMaterial(const LWO::Surface &surf, aiMaterial *pcMat) {
+ // copy the name of the surface
+ aiString st;
+ st.Set(surf.mName);
+ pcMat->AddProperty(&st, AI_MATKEY_NAME);
+
+ const int i = surf.bDoubleSided ? 1 : 0;
+ pcMat->AddProperty(&i, 1, AI_MATKEY_TWOSIDED);
+
+ // add the refraction index and the bump intensity
+ pcMat->AddProperty(&surf.mIOR, 1, AI_MATKEY_REFRACTI);
+ pcMat->AddProperty(&surf.mBumpIntensity, 1, AI_MATKEY_BUMPSCALING);
+
+ aiShadingMode m;
+ if (surf.mSpecularValue && surf.mGlossiness) {
+ float fGloss;
+ if (mIsLWO2) {
+ fGloss = std::pow(surf.mGlossiness * ai_real(10.0) + ai_real(2.0), ai_real(2.0));
+ } else {
+ if (16.0 >= surf.mGlossiness)
+ fGloss = 6.0;
+ else if (64.0 >= surf.mGlossiness)
+ fGloss = 20.0;
+ else if (256.0 >= surf.mGlossiness)
+ fGloss = 50.0;
+ else
+ fGloss = 80.0;
+ }
+
+ pcMat->AddProperty(&surf.mSpecularValue, 1, AI_MATKEY_SHININESS_STRENGTH);
+ pcMat->AddProperty(&fGloss, 1, AI_MATKEY_SHININESS);
+ m = aiShadingMode_Phong;
+ } else
+ m = aiShadingMode_Gouraud;
+
+ // specular color
+ aiColor3D clr = lerp(aiColor3D(1.0, 1.0, 1.0), surf.mColor, surf.mColorHighlights);
+ pcMat->AddProperty(&clr, 1, AI_MATKEY_COLOR_SPECULAR);
+ pcMat->AddProperty(&surf.mSpecularValue, 1, AI_MATKEY_SHININESS_STRENGTH);
+
+ // emissive color
+ // luminosity is not really the same but it affects the surface in a similar way. Some scaling looks good.
+ clr.g = clr.b = clr.r = surf.mLuminosity * ai_real(0.8);
+ pcMat->AddProperty<aiColor3D>(&clr, 1, AI_MATKEY_COLOR_EMISSIVE);
+
+ // opacity ... either additive or default-blended, please
+ if (0.0 != surf.mAdditiveTransparency) {
+ const int add = aiBlendMode_Additive;
+ pcMat->AddProperty(&surf.mAdditiveTransparency, 1, AI_MATKEY_OPACITY);
+ pcMat->AddProperty(&add, 1, AI_MATKEY_BLEND_FUNC);
+ } else if (10e10f != surf.mTransparency) {
+ const int def = aiBlendMode_Default;
+ const float f = 1.0f - surf.mTransparency;
+ pcMat->AddProperty(&f, 1, AI_MATKEY_OPACITY);
+ pcMat->AddProperty(&def, 1, AI_MATKEY_BLEND_FUNC);
+ }
+
+ // ADD TEXTURES to the material
+ // TODO: find out how we can handle COLOR textures correctly...
+ bool b = HandleTextures(pcMat, surf.mColorTextures, aiTextureType_DIFFUSE);
+ b = (b || HandleTextures(pcMat, surf.mDiffuseTextures, aiTextureType_DIFFUSE));
+ HandleTextures(pcMat, surf.mSpecularTextures, aiTextureType_SPECULAR);
+ HandleTextures(pcMat, surf.mGlossinessTextures, aiTextureType_SHININESS);
+ HandleTextures(pcMat, surf.mBumpTextures, aiTextureType_HEIGHT);
+ HandleTextures(pcMat, surf.mOpacityTextures, aiTextureType_OPACITY);
+ HandleTextures(pcMat, surf.mReflectionTextures, aiTextureType_REFLECTION);
+
+ // Now we need to know which shader to use .. iterate through the shader list of
+ // the surface and search for a name which we know ...
+ for (const auto &shader : surf.mShaders) {
+ if (shader.functionName == "LW_SuperCelShader" || shader.functionName == "AH_CelShader") {
+ ASSIMP_LOG_INFO("LWO2: Mapping LW_SuperCelShader/AH_CelShader to aiShadingMode_Toon");
+
+ m = aiShadingMode_Toon;
+ break;
+ } else if (shader.functionName == "LW_RealFresnel" || shader.functionName == "LW_FastFresnel") {
+ ASSIMP_LOG_INFO("LWO2: Mapping LW_RealFresnel/LW_FastFresnel to aiShadingMode_Fresnel");
+
+ m = aiShadingMode_Fresnel;
+ break;
+ } else {
+ ASSIMP_LOG_WARN("LWO2: Unknown surface shader: ", shader.functionName);
+ }
+ }
+ if (surf.mMaximumSmoothAngle <= 0.0)
+ m = aiShadingMode_Flat;
+ int m_ = static_cast<int>(m);
+ pcMat->AddProperty(&m_, 1, AI_MATKEY_SHADING_MODEL);
+
+ // (the diffuse value is just a scaling factor)
+ // If a diffuse texture is set, we set this value to 1.0
+ clr = (b && false ? aiColor3D(1.0, 1.0, 1.0) : surf.mColor);
+ clr.r *= surf.mDiffuseValue;
+ clr.g *= surf.mDiffuseValue;
+ clr.b *= surf.mDiffuseValue;
+ pcMat->AddProperty<aiColor3D>(&clr, 1, AI_MATKEY_COLOR_DIFFUSE);
+}
+
+// ------------------------------------------------------------------------------------------------
+char LWOImporter::FindUVChannels(LWO::TextureList &list,
+ LWO::Layer & /*layer*/, LWO::UVChannel &uv, unsigned int next) {
+ char ret = 0;
+ for (auto &texture : list) {
+
+ // Ignore textures with non-UV mappings for the moment.
+ if (!texture.enabled || !texture.bCanUse || texture.mapMode != LWO::Texture::UV) {
+ continue;
+ }
+
+ if (texture.mUVChannelIndex == uv.name) {
+ ret = 1;
+
+ // got it.
+ if (texture.mRealUVIndex == UINT_MAX || texture.mRealUVIndex == next) {
+ texture.mRealUVIndex = next;
+ } else {
+ // channel mismatch. need to duplicate the material.
+ ASSIMP_LOG_WARN("LWO: Channel mismatch, would need to duplicate surface [design bug]");
+
+ // TODO
+ }
+ }
+ }
+ return ret;
+}
+
+// ------------------------------------------------------------------------------------------------
+void LWOImporter::FindUVChannels(LWO::Surface &surf,
+ LWO::SortedRep &sorted, LWO::Layer &layer,
+ unsigned int out[AI_MAX_NUMBER_OF_TEXTURECOORDS]) {
+ unsigned int next = 0, extra = 0, num_extra = 0;
+
+ // Check whether we have an UV entry != 0 for one of the faces in 'sorted'
+ for (unsigned int i = 0; i < layer.mUVChannels.size(); ++i) {
+ LWO::UVChannel &uv = layer.mUVChannels[i];
+
+ for (LWO::SortedRep::const_iterator it = sorted.begin(); it != sorted.end(); ++it) {
+
+ LWO::Face &face = layer.mFaces[*it];
+
+ for (unsigned int n = 0; n < face.mNumIndices; ++n) {
+ unsigned int idx = face.mIndices[n];
+
+ if (uv.abAssigned[idx] && ((aiVector2D *)&uv.rawData[0])[idx] != aiVector2D()) {
+
+ if (extra >= AI_MAX_NUMBER_OF_TEXTURECOORDS) {
+
+ ASSIMP_LOG_ERROR("LWO: Maximum number of UV channels for "
+ "this mesh reached. Skipping channel \'" +
+ uv.name + "\'");
+
+ } else {
+ // Search through all textures assigned to 'surf' and look for this UV channel
+ char had = 0;
+ had |= FindUVChannels(surf.mColorTextures, layer, uv, next);
+ had |= FindUVChannels(surf.mDiffuseTextures, layer, uv, next);
+ had |= FindUVChannels(surf.mSpecularTextures, layer, uv, next);
+ had |= FindUVChannels(surf.mGlossinessTextures, layer, uv, next);
+ had |= FindUVChannels(surf.mOpacityTextures, layer, uv, next);
+ had |= FindUVChannels(surf.mBumpTextures, layer, uv, next);
+ had |= FindUVChannels(surf.mReflectionTextures, layer, uv, next);
+
+ // We have a texture referencing this UV channel so we have to take special care
+ // and are willing to drop unreferenced channels in favour of it.
+ if (had != 0) {
+ if (num_extra) {
+
+ for (unsigned int a = next; a < std::min(extra, AI_MAX_NUMBER_OF_TEXTURECOORDS - 1u); ++a) {
+ out[a + 1] = out[a];
+ }
+ }
+ ++extra;
+ out[next++] = i;
+ }
+ // Bah ... seems not to be used at all. Push to end if enough space is available.
+ else {
+ out[extra++] = i;
+ ++num_extra;
+ }
+ }
+ it = sorted.end() - 1;
+ break;
+ }
+ }
+ }
+ }
+ if (extra < AI_MAX_NUMBER_OF_TEXTURECOORDS) {
+ out[extra] = UINT_MAX;
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+void LWOImporter::FindVCChannels(const LWO::Surface &surf, LWO::SortedRep &sorted, const LWO::Layer &layer,
+ unsigned int out[AI_MAX_NUMBER_OF_COLOR_SETS]) {
+ unsigned int next = 0;
+
+ // Check whether we have an vc entry != 0 for one of the faces in 'sorted'
+ for (unsigned int i = 0; i < layer.mVColorChannels.size(); ++i) {
+ const LWO::VColorChannel &vc = layer.mVColorChannels[i];
+
+ if (surf.mVCMap == vc.name) {
+ // The vertex color map is explicitly requested by the surface so we need to take special care of it
+ for (unsigned int a = 0; a < std::min(next, AI_MAX_NUMBER_OF_COLOR_SETS - 1u); ++a) {
+ out[a + 1] = out[a];
+ }
+ out[0] = i;
+ ++next;
+ } else {
+
+ for (LWO::SortedRep::iterator it = sorted.begin(); it != sorted.end(); ++it) {
+ const LWO::Face &face = layer.mFaces[*it];
+
+ for (unsigned int n = 0; n < face.mNumIndices; ++n) {
+ unsigned int idx = face.mIndices[n];
+
+ if (vc.abAssigned[idx] && ((aiColor4D *)&vc.rawData[0])[idx] != aiColor4D(0.0, 0.0, 0.0, 1.0)) {
+ if (next >= AI_MAX_NUMBER_OF_COLOR_SETS) {
+
+ ASSIMP_LOG_ERROR("LWO: Maximum number of vertex color channels for "
+ "this mesh reached. Skipping channel \'" +
+ vc.name + "\'");
+
+ } else {
+ out[next++] = i;
+ }
+ it = sorted.end() - 1;
+ break;
+ }
+ }
+ }
+ }
+ }
+ if (next != AI_MAX_NUMBER_OF_COLOR_SETS) {
+ out[next] = UINT_MAX;
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+void LWOImporter::LoadLWO2ImageMap(unsigned int size, LWO::Texture &tex) {
+ LE_NCONST uint8_t *const end = mFileBuffer + size;
+ while (true) {
+ if (mFileBuffer + 6 >= end) break;
+ LE_NCONST IFF::SubChunkHeader head = IFF::LoadSubChunk(mFileBuffer);
+
+ if (mFileBuffer + head.length > end)
+ throw DeadlyImportError("LWO2: Invalid SURF.BLOCK chunk length");
+
+ uint8_t *const next = mFileBuffer + head.length;
+ switch (head.type) {
+ case AI_LWO_PROJ:
+ tex.mapMode = (Texture::MappingMode)GetU2();
+ break;
+ case AI_LWO_WRAP:
+ tex.wrapModeWidth = (Texture::Wrap)GetU2();
+ tex.wrapModeHeight = (Texture::Wrap)GetU2();
+ break;
+ case AI_LWO_AXIS:
+ tex.majorAxis = (Texture::Axes)GetU2();
+ break;
+ case AI_LWO_IMAG:
+ tex.mClipIdx = GetU2();
+ break;
+ case AI_LWO_VMAP:
+ GetS0(tex.mUVChannelIndex, head.length);
+ break;
+ case AI_LWO_WRPH:
+ tex.wrapAmountH = GetF4();
+ break;
+ case AI_LWO_WRPW:
+ tex.wrapAmountW = GetF4();
+ break;
+ }
+ mFileBuffer = next;
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+void LWOImporter::LoadLWO2Procedural(unsigned int /*size*/, LWO::Texture &tex) {
+ // --- not supported at the moment
+ ASSIMP_LOG_ERROR("LWO2: Found procedural texture, this is not supported");
+ tex.bCanUse = false;
+}
+
+// ------------------------------------------------------------------------------------------------
+void LWOImporter::LoadLWO2Gradient(unsigned int /*size*/, LWO::Texture &tex) {
+ // --- not supported at the moment
+ ASSIMP_LOG_ERROR("LWO2: Found gradient texture, this is not supported");
+ tex.bCanUse = false;
+}
+
+// ------------------------------------------------------------------------------------------------
+void LWOImporter::LoadLWO2TextureHeader(unsigned int size, LWO::Texture &tex) {
+ LE_NCONST uint8_t *const end = mFileBuffer + size;
+
+ // get the ordinal string
+ GetS0(tex.ordinal, size);
+
+ // we could crash later if this is an empty string ...
+ if (!tex.ordinal.length()) {
+ ASSIMP_LOG_ERROR("LWO2: Ill-formed SURF.BLOK ordinal string");
+ tex.ordinal = "\x00";
+ }
+ while (true) {
+ if (mFileBuffer + 6 >= end) break;
+ const IFF::SubChunkHeader head = IFF::LoadSubChunk(mFileBuffer);
+
+ if (mFileBuffer + head.length > end)
+ throw DeadlyImportError("LWO2: Invalid texture header chunk length");
+
+ uint8_t *const next = mFileBuffer + head.length;
+ switch (head.type) {
+ case AI_LWO_CHAN:
+ tex.type = GetU4();
+ break;
+ case AI_LWO_ENAB:
+ tex.enabled = GetU2() ? true : false;
+ break;
+ case AI_LWO_OPAC:
+ tex.blendType = (Texture::BlendType)GetU2();
+ tex.mStrength = GetF4();
+ break;
+ }
+ mFileBuffer = next;
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+void LWOImporter::LoadLWO2TextureBlock(LE_NCONST IFF::SubChunkHeader *head, unsigned int size) {
+ ai_assert(!mSurfaces->empty());
+ LWO::Surface &surf = mSurfaces->back();
+ LWO::Texture tex;
+
+ // load the texture header
+ LoadLWO2TextureHeader(head->length, tex);
+ size -= head->length + 6;
+
+ // now get the exact type of the texture
+ switch (head->type) {
+ case AI_LWO_PROC:
+ LoadLWO2Procedural(size, tex);
+ break;
+ case AI_LWO_GRAD:
+ LoadLWO2Gradient(size, tex);
+ break;
+ case AI_LWO_IMAP:
+ LoadLWO2ImageMap(size, tex);
+ }
+
+ // get the destination channel
+ TextureList *listRef = nullptr;
+ switch (tex.type) {
+ case AI_LWO_COLR:
+ listRef = &surf.mColorTextures;
+ break;
+ case AI_LWO_DIFF:
+ listRef = &surf.mDiffuseTextures;
+ break;
+ case AI_LWO_SPEC:
+ listRef = &surf.mSpecularTextures;
+ break;
+ case AI_LWO_GLOS:
+ listRef = &surf.mGlossinessTextures;
+ break;
+ case AI_LWO_BUMP:
+ listRef = &surf.mBumpTextures;
+ break;
+ case AI_LWO_TRAN:
+ listRef = &surf.mOpacityTextures;
+ break;
+ case AI_LWO_REFL:
+ listRef = &surf.mReflectionTextures;
+ break;
+ default:
+ ASSIMP_LOG_WARN("LWO2: Encountered unknown texture type");
+ return;
+ }
+
+ // now attach the texture to the parent surface - sort by ordinal string
+ for (TextureList::iterator it = listRef->begin(); it != listRef->end(); ++it) {
+ if (::strcmp(tex.ordinal.c_str(), (*it).ordinal.c_str()) < 0) {
+ listRef->insert(it, tex);
+ return;
+ }
+ }
+ listRef->push_back(tex);
+}
+
+// ------------------------------------------------------------------------------------------------
+void LWOImporter::LoadLWO2ShaderBlock(LE_NCONST IFF::SubChunkHeader * /*head*/, unsigned int size) {
+ LE_NCONST uint8_t *const end = mFileBuffer + size;
+
+ ai_assert(!mSurfaces->empty());
+ LWO::Surface &surf = mSurfaces->back();
+ LWO::Shader shader;
+
+ // get the ordinal string
+ GetS0(shader.ordinal, size);
+
+ // we could crash later if this is an empty string ...
+ if (!shader.ordinal.length()) {
+ ASSIMP_LOG_ERROR("LWO2: Ill-formed SURF.BLOK ordinal string");
+ shader.ordinal = "\x00";
+ }
+
+ // read the header
+ while (true) {
+ if (mFileBuffer + 6 >= end) break;
+ const IFF::SubChunkHeader head = IFF::LoadSubChunk(mFileBuffer);
+
+ if (mFileBuffer + head.length > end)
+ throw DeadlyImportError("LWO2: Invalid shader header chunk length");
+
+ uint8_t *const next = mFileBuffer + head.length;
+ switch (head.type) {
+ case AI_LWO_ENAB:
+ shader.enabled = GetU2() ? true : false;
+ break;
+
+ case AI_LWO_FUNC:
+ GetS0(shader.functionName, head.length);
+ }
+ mFileBuffer = next;
+ }
+
+ // now attach the shader to the parent surface - sort by ordinal string
+ for (ShaderList::iterator it = surf.mShaders.begin(); it != surf.mShaders.end(); ++it) {
+ if (::strcmp(shader.ordinal.c_str(), (*it).ordinal.c_str()) < 0) {
+ surf.mShaders.insert(it, shader);
+ return;
+ }
+ }
+ surf.mShaders.push_back(shader);
+}
+
+// ------------------------------------------------------------------------------------------------
+void LWOImporter::LoadLWO2Surface(unsigned int size) {
+ LE_NCONST uint8_t *const end = mFileBuffer + size;
+
+ mSurfaces->push_back(LWO::Surface());
+ LWO::Surface &surf = mSurfaces->back();
+
+ GetS0(surf.mName, size);
+
+ // check whether this surface was derived from any other surface
+ std::string derived;
+ GetS0(derived, (unsigned int)(end - mFileBuffer));
+ if (derived.length()) {
+ // yes, find this surface
+ for (SurfaceList::iterator it = mSurfaces->begin(), itEnd = mSurfaces->end() - 1; it != itEnd; ++it) {
+ if ((*it).mName == derived) {
+ // we have it ...
+ surf = *it;
+ derived.clear();
+ break;
+ }
+ }
+ if (derived.size()) {
+ ASSIMP_LOG_WARN("LWO2: Unable to find source surface: ", derived);
+ }
+ }
+
+ while (true) {
+ if (mFileBuffer + 6 >= end)
+ break;
+ const IFF::SubChunkHeader head = IFF::LoadSubChunk(mFileBuffer);
+
+ if (mFileBuffer + head.length > end)
+ throw DeadlyImportError("LWO2: Invalid surface chunk length");
+
+ uint8_t *const next = mFileBuffer + head.length;
+ switch (head.type) {
+ // diffuse color
+ case AI_LWO_COLR: {
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, COLR, 12);
+ surf.mColor.r = GetF4();
+ surf.mColor.g = GetF4();
+ surf.mColor.b = GetF4();
+ break;
+ }
+ // diffuse strength ... hopefully
+ case AI_LWO_DIFF: {
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, DIFF, 4);
+ surf.mDiffuseValue = GetF4();
+ break;
+ }
+ // specular strength ... hopefully
+ case AI_LWO_SPEC: {
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, SPEC, 4);
+ surf.mSpecularValue = GetF4();
+ break;
+ }
+ // transparency
+ case AI_LWO_TRAN: {
+ // transparency explicitly disabled?
+ if (surf.mTransparency == 10e10f)
+ break;
+
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, TRAN, 4);
+ surf.mTransparency = GetF4();
+ break;
+ }
+ // additive transparency
+ case AI_LWO_ADTR: {
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, ADTR, 4);
+ surf.mAdditiveTransparency = GetF4();
+ break;
+ }
+ // wireframe mode
+ case AI_LWO_LINE: {
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, LINE, 2);
+ if (GetU2() & 0x1)
+ surf.mWireframe = true;
+ break;
+ }
+ // glossiness
+ case AI_LWO_GLOS: {
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, GLOS, 4);
+ surf.mGlossiness = GetF4();
+ break;
+ }
+ // bump intensity
+ case AI_LWO_BUMP: {
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, BUMP, 4);
+ surf.mBumpIntensity = GetF4();
+ break;
+ }
+ // color highlights
+ case AI_LWO_CLRH: {
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, CLRH, 4);
+ surf.mColorHighlights = GetF4();
+ break;
+ }
+ // index of refraction
+ case AI_LWO_RIND: {
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, RIND, 4);
+ surf.mIOR = GetF4();
+ break;
+ }
+ // polygon sidedness
+ case AI_LWO_SIDE: {
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, SIDE, 2);
+ surf.bDoubleSided = (3 == GetU2());
+ break;
+ }
+ // maximum smoothing angle
+ case AI_LWO_SMAN: {
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, SMAN, 4);
+ surf.mMaximumSmoothAngle = std::fabs(GetF4());
+ break;
+ }
+ // vertex color channel to be applied to the surface
+ case AI_LWO_VCOL: {
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, VCOL, 12);
+ surf.mDiffuseValue *= GetF4(); // strength
+ ReadVSizedIntLWO2(mFileBuffer); // skip envelope
+ surf.mVCMapType = GetU4(); // type of the channel
+
+ // name of the channel
+ GetS0(surf.mVCMap, (unsigned int)(next - mFileBuffer));
+ break;
+ }
+ // surface bock entry
+ case AI_LWO_BLOK: {
+ AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, BLOK, 4);
+ IFF::SubChunkHeader head2 = IFF::LoadSubChunk(mFileBuffer);
+
+ switch (head2.type) {
+ case AI_LWO_PROC:
+ case AI_LWO_GRAD:
+ case AI_LWO_IMAP:
+ LoadLWO2TextureBlock(&head2, head.length);
+ break;
+ case AI_LWO_SHDR:
+ LoadLWO2ShaderBlock(&head2, head.length);
+ break;
+
+ default:
+ ASSIMP_LOG_WARN("LWO2: Found an unsupported surface BLOK");
+ };
+
+ break;
+ }
+ }
+ mFileBuffer = next;
+ }
+}
+
+#endif // !! ASSIMP_BUILD_NO_X_IMPORTER
generated by cgit v1.2.1 (git 2.18.0) at 2024-12-23 23:38:26 +0000