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Diffstat (limited to 'libs/assimp/code/PostProcessing/TextureTransform.cpp')
| -rw-r--r-- | libs/assimp/code/PostProcessing/TextureTransform.cpp | 567 |
1 files changed, 0 insertions, 567 deletions
diff --git a/libs/assimp/code/PostProcessing/TextureTransform.cpp b/libs/assimp/code/PostProcessing/TextureTransform.cpp deleted file mode 100644 index 653506e..0000000 --- a/libs/assimp/code/PostProcessing/TextureTransform.cpp +++ /dev/null @@ -1,567 +0,0 @@ -/* -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 A helper class that processes texture transformations */ - - - -#include <assimp/Importer.hpp> -#include <assimp/postprocess.h> -#include <assimp/DefaultLogger.hpp> -#include <assimp/scene.h> - -#include "TextureTransform.h" -#include <assimp/StringUtils.h> - -using namespace Assimp; - -// ------------------------------------------------------------------------------------------------ -// Constructor to be privately used by Importer -TextureTransformStep::TextureTransformStep() : - configFlags() -{ - // nothing to do here -} - -// ------------------------------------------------------------------------------------------------ -// Destructor, private as well -TextureTransformStep::~TextureTransformStep() -{ - // nothing to do here -} - -// ------------------------------------------------------------------------------------------------ -// Returns whether the processing step is present in the given flag field. -bool TextureTransformStep::IsActive( unsigned int pFlags) const -{ - return (pFlags & aiProcess_TransformUVCoords) != 0; -} - -// ------------------------------------------------------------------------------------------------ -// Setup properties -void TextureTransformStep::SetupProperties(const Importer* pImp) -{ - configFlags = pImp->GetPropertyInteger(AI_CONFIG_PP_TUV_EVALUATE,AI_UVTRAFO_ALL); -} - -// ------------------------------------------------------------------------------------------------ -void TextureTransformStep::PreProcessUVTransform(STransformVecInfo& info) -{ - /* This function tries to simplify the input UV transformation. - * That's very important as it allows us to reduce the number - * of output UV channels. The order in which the transformations - * are applied is - as always - scaling, rotation, translation. - */ - - int rounded; - char szTemp[512]; - - /* Optimize the rotation angle. That's slightly difficult as - * we have an inprecise floating-point number (when comparing - * UV transformations we'll take that into account by using - * an epsilon of 5 degrees). If there is a rotation value, we can't - * perform any further optimizations. - */ - if (info.mRotation) - { - float out = info.mRotation; - rounded = static_cast<int>((info.mRotation / static_cast<float>(AI_MATH_TWO_PI))); - if (rounded) - { - out -= rounded * static_cast<float>(AI_MATH_PI); - ASSIMP_LOG_INFO("Texture coordinate rotation ", info.mRotation, " can be simplified to ", out); - } - - // Next step - convert negative rotation angles to positives - if (out < 0.f) - out = (float)AI_MATH_TWO_PI * 2 + out; - - info.mRotation = out; - return; - } - - - /* Optimize UV translation in the U direction. To determine whether - * or not we can optimize we need to look at the requested mapping - * type (e.g. if mirroring is active there IS a difference between - * offset 2 and 3) - */ - rounded = (int)info.mTranslation.x; - if (rounded) { - float out = 0.0f; - szTemp[0] = 0; - if (aiTextureMapMode_Wrap == info.mapU) { - // Wrap - simple take the fraction of the field - out = info.mTranslation.x-(float)rounded; - ai_snprintf(szTemp, 512, "[w] UV U offset %f can be simplified to %f", info.mTranslation.x, out); - } - else if (aiTextureMapMode_Mirror == info.mapU && 1 != rounded) { - // Mirror - if (rounded % 2) - rounded--; - out = info.mTranslation.x-(float)rounded; - - ai_snprintf(szTemp,512,"[m/d] UV U offset %f can be simplified to %f",info.mTranslation.x,out); - } - else if (aiTextureMapMode_Clamp == info.mapU || aiTextureMapMode_Decal == info.mapU) { - // Clamp - translations beyond 1,1 are senseless - ai_snprintf(szTemp,512,"[c] UV U offset %f can be clamped to 1.0f",info.mTranslation.x); - - out = 1.f; - } - if (szTemp[0]) { - ASSIMP_LOG_INFO(szTemp); - info.mTranslation.x = out; - } - } - - /* Optimize UV translation in the V direction. To determine whether - * or not we can optimize we need to look at the requested mapping - * type (e.g. if mirroring is active there IS a difference between - * offset 2 and 3) - */ - rounded = (int)info.mTranslation.y; - if (rounded) { - float out = 0.0f; - szTemp[0] = 0; - if (aiTextureMapMode_Wrap == info.mapV) { - // Wrap - simple take the fraction of the field - out = info.mTranslation.y-(float)rounded; - ::ai_snprintf(szTemp,512,"[w] UV V offset %f can be simplified to %f",info.mTranslation.y,out); - } - else if (aiTextureMapMode_Mirror == info.mapV && 1 != rounded) { - // Mirror - if (rounded % 2) - rounded--; - out = info.mTranslation.x-(float)rounded; - - ::ai_snprintf(szTemp,512,"[m/d] UV V offset %f can be simplified to %f",info.mTranslation.y,out); - } - else if (aiTextureMapMode_Clamp == info.mapV || aiTextureMapMode_Decal == info.mapV) { - // Clamp - translations beyond 1,1 are senseless - ::ai_snprintf(szTemp,512,"[c] UV V offset %f can be clamped to 1.0f",info.mTranslation.y); - - out = 1.f; - } - if (szTemp[0]) { - ASSIMP_LOG_INFO(szTemp); - info.mTranslation.y = out; - } - } -} - -// ------------------------------------------------------------------------------------------------ -void UpdateUVIndex(const std::list<TTUpdateInfo>& l, unsigned int n) -{ - // Don't set if == 0 && wasn't set before - for (std::list<TTUpdateInfo>::const_iterator it = l.begin();it != l.end(); ++it) { - const TTUpdateInfo& info = *it; - - if (info.directShortcut) - *info.directShortcut = n; - else if (!n) - { - info.mat->AddProperty<int>((int*)&n,1,AI_MATKEY_UVWSRC(info.semantic,info.index)); - } - } -} - -// ------------------------------------------------------------------------------------------------ -inline const char* MappingModeToChar(aiTextureMapMode map) -{ - if (aiTextureMapMode_Wrap == map) - return "-w"; - - if (aiTextureMapMode_Mirror == map) - return "-m"; - - return "-c"; -} - -// ------------------------------------------------------------------------------------------------ -void TextureTransformStep::Execute( aiScene* pScene) -{ - ASSIMP_LOG_DEBUG("TransformUVCoordsProcess begin"); - - - /* We build a per-mesh list of texture transformations we'll need - * to apply. To achieve this, we iterate through all materials, - * find all textures and get their transformations and UV indices. - * Then we search for all meshes using this material. - */ - typedef std::list<STransformVecInfo> MeshTrafoList; - std::vector<MeshTrafoList> meshLists(pScene->mNumMeshes); - - for (unsigned int i = 0; i < pScene->mNumMaterials;++i) { - - aiMaterial* mat = pScene->mMaterials[i]; - for (unsigned int a = 0; a < mat->mNumProperties;++a) { - - aiMaterialProperty* prop = mat->mProperties[a]; - if (!::strcmp( prop->mKey.data, "$tex.file")) { - STransformVecInfo info; - - // Setup a shortcut structure to allow for a fast updating - // of the UV index later - TTUpdateInfo update; - update.mat = (aiMaterial*) mat; - update.semantic = prop->mSemantic; - update.index = prop->mIndex; - - // Get textured properties and transform - for (unsigned int a2 = 0; a2 < mat->mNumProperties;++a2) { - aiMaterialProperty* prop2 = mat->mProperties[a2]; - if (prop2->mSemantic != prop->mSemantic || prop2->mIndex != prop->mIndex) { - continue; - } - - if ( !::strcmp( prop2->mKey.data, "$tex.uvwsrc")) { - info.uvIndex = *((int*)prop2->mData); - - // Store a direct pointer for later use - update.directShortcut = (unsigned int*) prop2->mData; - } - - else if ( !::strcmp( prop2->mKey.data, "$tex.mapmodeu")) { - info.mapU = *((aiTextureMapMode*)prop2->mData); - } - else if ( !::strcmp( prop2->mKey.data, "$tex.mapmodev")) { - info.mapV = *((aiTextureMapMode*)prop2->mData); - } - else if ( !::strcmp( prop2->mKey.data, "$tex.uvtrafo")) { - // ValidateDS should check this - ai_assert(prop2->mDataLength >= 20); - ::memcpy(&info.mTranslation.x,prop2->mData,sizeof(float)*5); - - // Directly remove this property from the list - mat->mNumProperties--; - for (unsigned int a3 = a2; a3 < mat->mNumProperties;++a3) { - mat->mProperties[a3] = mat->mProperties[a3+1]; - } - - delete prop2; - - // Warn: could be an underflow, but this does not invoke undefined behaviour - --a2; - } - } - - // Find out which transformations are to be evaluated - if (!(configFlags & AI_UVTRAFO_ROTATION)) { - info.mRotation = 0.f; - } - if (!(configFlags & AI_UVTRAFO_SCALING)) { - info.mScaling = aiVector2D(1.f,1.f); - } - if (!(configFlags & AI_UVTRAFO_TRANSLATION)) { - info.mTranslation = aiVector2D(0.f,0.f); - } - - // Do some preprocessing - PreProcessUVTransform(info); - info.uvIndex = std::min(info.uvIndex,AI_MAX_NUMBER_OF_TEXTURECOORDS -1u); - - // Find out whether this material is used by more than - // one mesh. This will make our task much, much more difficult! - unsigned int cnt = 0; - for (unsigned int n = 0; n < pScene->mNumMeshes;++n) { - if (pScene->mMeshes[n]->mMaterialIndex == i) - ++cnt; - } - - if (!cnt) - continue; - else if (1 != cnt) { - // This material is referenced by more than one mesh! - // So we need to make sure the UV index for the texture - // is identical for each of it ... - info.lockedPos = AI_TT_UV_IDX_LOCK_TBD; - } - - // Get all corresponding meshes - for (unsigned int n = 0; n < pScene->mNumMeshes;++n) { - aiMesh* mesh = pScene->mMeshes[n]; - if (mesh->mMaterialIndex != i || !mesh->mTextureCoords[0]) - continue; - - unsigned int uv = info.uvIndex; - if (!mesh->mTextureCoords[uv]) { - // If the requested UV index is not available, take the first one instead. - uv = 0; - } - - if (mesh->mNumUVComponents[info.uvIndex] >= 3){ - ASSIMP_LOG_WARN("UV transformations on 3D mapping channels are not supported"); - continue; - } - - MeshTrafoList::iterator it; - - // Check whether we have this transform setup already - for (it = meshLists[n].begin();it != meshLists[n].end(); ++it) { - - if ((*it) == info && (*it).uvIndex == uv) { - (*it).updateList.push_back(update); - break; - } - } - - if (it == meshLists[n].end()) { - meshLists[n].push_back(info); - meshLists[n].back().uvIndex = uv; - meshLists[n].back().updateList.push_back(update); - } - } - } - } - } - - char buffer[1024]; // should be sufficiently large - unsigned int outChannels = 0, inChannels = 0, transformedChannels = 0; - - // Now process all meshes. Important: we don't remove unreferenced UV channels. - // This is a job for the RemoveUnreferencedData-Step. - for (unsigned int q = 0; q < pScene->mNumMeshes;++q) { - - aiMesh* mesh = pScene->mMeshes[q]; - MeshTrafoList& trafo = meshLists[q]; - - inChannels += mesh->GetNumUVChannels(); - - if (!mesh->mTextureCoords[0] || trafo.empty() || (trafo.size() == 1 && trafo.begin()->IsUntransformed())) { - outChannels += mesh->GetNumUVChannels(); - continue; - } - - // Move untransformed UV channels to the first position in the list .... - // except if we need a new locked index which should be as small as possible - bool veto = false, need = false; - unsigned int cnt = 0; - unsigned int untransformed = 0; - - MeshTrafoList::iterator it,it2; - for (it = trafo.begin();it != trafo.end(); ++it,++cnt) { - - if (!(*it).IsUntransformed()) { - need = true; - } - - if ((*it).lockedPos == AI_TT_UV_IDX_LOCK_TBD) { - // Lock this index and make sure it won't be changed - (*it).lockedPos = cnt; - veto = true; - continue; - } - - if (!veto && it != trafo.begin() && (*it).IsUntransformed()) { - for (it2 = trafo.begin();it2 != it; ++it2) { - if (!(*it2).IsUntransformed()) - break; - } - trafo.insert(it2,*it); - trafo.erase(it); - break; - } - } - if (!need) - continue; - - // Find all that are not at their 'locked' position and move them to it. - // Conflicts are possible but quite unlikely. - cnt = 0; - for (it = trafo.begin();it != trafo.end(); ++it,++cnt) { - if ((*it).lockedPos != AI_TT_UV_IDX_LOCK_NONE && (*it).lockedPos != cnt) { - it2 = trafo.begin();unsigned int t = 0; - while (t != (*it).lockedPos) - ++it2; - - if ((*it2).lockedPos != AI_TT_UV_IDX_LOCK_NONE) { - ASSIMP_LOG_ERROR("Channel mismatch, can't compute all transformations properly [design bug]"); - continue; - } - - std::swap(*it2,*it); - if ((*it).lockedPos == untransformed) - untransformed = cnt; - } - } - - // ... and add dummies for all unreferenced channels - // at the end of the list - bool ref[AI_MAX_NUMBER_OF_TEXTURECOORDS]; - for (unsigned int n = 0; n < AI_MAX_NUMBER_OF_TEXTURECOORDS;++n) - ref[n] = !mesh->mTextureCoords[n]; - - for (it = trafo.begin();it != trafo.end(); ++it) - ref[(*it).uvIndex] = true; - - for (unsigned int n = 0; n < AI_MAX_NUMBER_OF_TEXTURECOORDS;++n) { - if (ref[n]) - continue; - trafo.push_back(STransformVecInfo()); - trafo.back().uvIndex = n; - } - - // Then check whether this list breaks the channel limit. - // The unimportant ones are at the end of the list, so - // it shouldn't be too worse if we remove them. - unsigned int size = (unsigned int)trafo.size(); - if (size > AI_MAX_NUMBER_OF_TEXTURECOORDS) { - - if (!DefaultLogger::isNullLogger()) { - ASSIMP_LOG_ERROR(static_cast<unsigned int>(trafo.size()), " UV channels required but just ", - AI_MAX_NUMBER_OF_TEXTURECOORDS, " available"); - } - size = AI_MAX_NUMBER_OF_TEXTURECOORDS; - } - - - aiVector3D* old[AI_MAX_NUMBER_OF_TEXTURECOORDS]; - for (unsigned int n = 0; n < AI_MAX_NUMBER_OF_TEXTURECOORDS;++n) - old[n] = mesh->mTextureCoords[n]; - - // Now continue and generate the output channels. Channels - // that we're not going to need later can be overridden. - it = trafo.begin(); - for (unsigned int n = 0; n < trafo.size();++n,++it) { - - if (n >= size) { - // Try to use an untransformed channel for all channels we threw over board - UpdateUVIndex((*it).updateList,untransformed); - continue; - } - - outChannels++; - - // Write to the log - if (!DefaultLogger::isNullLogger()) { - ::ai_snprintf(buffer,1024,"Mesh %u, channel %u: t(%.3f,%.3f), s(%.3f,%.3f), r(%.3f), %s%s", - q,n, - (*it).mTranslation.x, - (*it).mTranslation.y, - (*it).mScaling.x, - (*it).mScaling.y, - AI_RAD_TO_DEG( (*it).mRotation), - MappingModeToChar ((*it).mapU), - MappingModeToChar ((*it).mapV)); - - ASSIMP_LOG_INFO(buffer); - } - - // Check whether we need a new buffer here - if (mesh->mTextureCoords[n]) { - - it2 = it;++it2; - for (unsigned int m = n+1; m < size;++m, ++it2) { - - if ((*it2).uvIndex == n){ - it2 = trafo.begin(); - break; - } - } - if (it2 == trafo.begin()){ - mesh->mTextureCoords[n] = new aiVector3D[mesh->mNumVertices]; - } - } - else mesh->mTextureCoords[n] = new aiVector3D[mesh->mNumVertices]; - - aiVector3D* src = old[(*it).uvIndex]; - aiVector3D* dest, *end; - dest = mesh->mTextureCoords[n]; - - ai_assert(nullptr != src); - - // Copy the data to the destination array - if (dest != src) - ::memcpy(dest,src,sizeof(aiVector3D)*mesh->mNumVertices); - - end = dest + mesh->mNumVertices; - - // Build a transformation matrix and transform all UV coords with it - if (!(*it).IsUntransformed()) { - const aiVector2D& trl = (*it).mTranslation; - const aiVector2D& scl = (*it).mScaling; - - // fixme: simplify .. - ++transformedChannels; - aiMatrix3x3 matrix; - - aiMatrix3x3 m2,m3,m4,m5; - - m4.a1 = scl.x; - m4.b2 = scl.y; - - m2.a3 = m2.b3 = 0.5f; - m3.a3 = m3.b3 = -0.5f; - - if ((*it).mRotation > AI_TT_ROTATION_EPSILON ) - aiMatrix3x3::RotationZ((*it).mRotation,matrix); - - m5.a3 += trl.x; m5.b3 += trl.y; - matrix = m2 * m4 * matrix * m3 * m5; - - for (src = dest; src != end; ++src) { /* manual homogeneous divide */ - src->z = 1.f; - *src = matrix * *src; - src->x /= src->z; - src->y /= src->z; - src->z = 0.f; - } - } - - // Update all UV indices - UpdateUVIndex((*it).updateList,n); - } - } - - // Print some detailed statistics into the log - if (!DefaultLogger::isNullLogger()) { - - if (transformedChannels) { - ASSIMP_LOG_INFO("TransformUVCoordsProcess end: ", outChannels, " output channels (in: ", inChannels, ", modified: ", transformedChannels,")"); - } else { - ASSIMP_LOG_DEBUG("TransformUVCoordsProcess finished"); - } - } -} - - |