summaryrefslogtreecommitdiff
path: root/libs/assimp/code/AssetLib/XGL/XGLLoader.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'libs/assimp/code/AssetLib/XGL/XGLLoader.cpp')
-rw-r--r--libs/assimp/code/AssetLib/XGL/XGLLoader.cpp787
1 files changed, 787 insertions, 0 deletions
diff --git a/libs/assimp/code/AssetLib/XGL/XGLLoader.cpp b/libs/assimp/code/AssetLib/XGL/XGLLoader.cpp
new file mode 100644
index 0000000..154af98
--- /dev/null
+++ b/libs/assimp/code/AssetLib/XGL/XGLLoader.cpp
@@ -0,0 +1,787 @@
+/*
+---------------------------------------------------------------------------
+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 XGL/ZGL importer class */
+
+#ifndef ASSIMP_BUILD_NO_XGL_IMPORTER
+
+#include "XGLLoader.h"
+#include "Common/Compression.h"
+
+#include <assimp/ParsingUtils.h>
+#include <assimp/fast_atof.h>
+#include <assimp/MemoryIOWrapper.h>
+#include <assimp/StreamReader.h>
+#include <assimp/importerdesc.h>
+#include <assimp/mesh.h>
+#include <assimp/scene.h>
+//#include <cctype>
+//#include <memory>
+
+using namespace Assimp;
+
+namespace Assimp { // this has to be in here because LogFunctions is in ::Assimp
+
+template <>
+const char *LogFunctions<XGLImporter>::Prefix() {
+ static auto prefix = "XGL: ";
+ return prefix;
+}
+
+} // namespace Assimp
+
+static const aiImporterDesc desc = {
+ "XGL Importer",
+ "",
+ "",
+ "",
+ aiImporterFlags_SupportTextFlavour | aiImporterFlags_SupportCompressedFlavour,
+ 0,
+ 0,
+ 0,
+ 0,
+ "xgl zgl"
+};
+
+// ------------------------------------------------------------------------------------------------
+// Constructor to be privately used by Importer
+XGLImporter::XGLImporter() :
+ mXmlParser(nullptr),
+ m_scene(nullptr) {
+ // empty
+}
+
+// ------------------------------------------------------------------------------------------------
+// Destructor, private as well
+XGLImporter::~XGLImporter() {
+ delete mXmlParser;
+}
+
+// ------------------------------------------------------------------------------------------------
+// Returns whether the class can handle the format of the given file.
+bool XGLImporter::CanRead(const std::string &pFile, IOSystem *pIOHandler, bool /*checkSig*/) const {
+ static const char *tokens[] = { "<world>", "<World>", "<WORLD>" };
+ return SearchFileHeaderForToken(pIOHandler, pFile, tokens, AI_COUNT_OF(tokens));
+}
+
+// ------------------------------------------------------------------------------------------------
+// Get a list of all file extensions which are handled by this class
+const aiImporterDesc *XGLImporter::GetInfo() const {
+ return &desc;
+}
+
+// ------------------------------------------------------------------------------------------------
+// Imports the given file into the given scene structure.
+void XGLImporter::InternReadFile(const std::string &pFile, aiScene *pScene, IOSystem *pIOHandler) {
+ #ifndef ASSIMP_BUILD_NO_COMPRESSED_XGL
+ std::vector<char> uncompressed;
+#endif
+
+ m_scene = pScene;
+ std::shared_ptr<IOStream> stream(pIOHandler->Open(pFile, "rb"));
+
+ // check whether we can read from the file
+ if (stream.get() == NULL) {
+ throw DeadlyImportError("Failed to open XGL/ZGL file " + pFile);
+ }
+
+ // see if its compressed, if so uncompress it
+ if (GetExtension(pFile) == "zgl") {
+#ifdef ASSIMP_BUILD_NO_COMPRESSED_XGL
+ ThrowException("Cannot read ZGL file since Assimp was built without compression support");
+#else
+ std::unique_ptr<StreamReaderLE> raw_reader(new StreamReaderLE(stream));
+
+ Compression compression;
+ size_t total = 0l;
+ if (compression.open(Compression::Format::Binary, Compression::FlushMode::NoFlush, -Compression::MaxWBits)) {
+ // skip two extra bytes, zgl files do carry a crc16 upfront (I think)
+ raw_reader->IncPtr(2);
+ total = compression.decompress((unsigned char *)raw_reader->GetPtr(), raw_reader->GetRemainingSize(), uncompressed);
+ compression.close();
+ }
+ // replace the input stream with a memory stream
+ stream.reset(new MemoryIOStream(reinterpret_cast<uint8_t*>(uncompressed.data()), total));
+#endif
+ }
+
+ // parse the XML file
+ mXmlParser = new XmlParser;
+ if (!mXmlParser->parse(stream.get())) {
+ throw DeadlyImportError("XML parse error while loading XGL file ", pFile);
+ }
+
+ TempScope scope;
+ XmlNode *worldNode = mXmlParser->findNode("WORLD");
+ if (nullptr != worldNode) {
+ ReadWorld(*worldNode, scope);
+ }
+
+ std::vector<aiMesh *> &meshes = scope.meshes_linear;
+ std::vector<aiMaterial *> &materials = scope.materials_linear;
+ if (!meshes.size() || !materials.size()) {
+ ThrowException("failed to extract data from XGL file, no meshes loaded");
+ }
+
+ // copy meshes
+ m_scene->mNumMeshes = static_cast<unsigned int>(meshes.size());
+ m_scene->mMeshes = new aiMesh *[m_scene->mNumMeshes]();
+ std::copy(meshes.begin(), meshes.end(), m_scene->mMeshes);
+
+ // copy materials
+ m_scene->mNumMaterials = static_cast<unsigned int>(materials.size());
+ m_scene->mMaterials = new aiMaterial *[m_scene->mNumMaterials]();
+ std::copy(materials.begin(), materials.end(), m_scene->mMaterials);
+
+ if (scope.light) {
+ m_scene->mNumLights = 1;
+ m_scene->mLights = new aiLight *[1];
+ m_scene->mLights[0] = scope.light;
+
+ scope.light->mName = m_scene->mRootNode->mName;
+ }
+
+ scope.dismiss();
+}
+
+// ------------------------------------------------------------------------------------------------
+void XGLImporter::ReadWorld(XmlNode &node, TempScope &scope) {
+ for (XmlNode &currentNode : node.children()) {
+ const std::string &s = ai_stdStrToLower(currentNode.name());
+
+ // XXX right now we'd skip <lighting> if it comes after
+ // <object> or <mesh>
+ if (s == "lighting") {
+ ReadLighting(currentNode, scope);
+ } else if (s == "object" || s == "mesh" || s == "mat") {
+ break;
+ }
+ }
+
+ aiNode *const nd = ReadObject(node, scope);
+ if (!nd) {
+ ThrowException("failure reading <world>");
+ }
+ if (nd->mName.length == 0) {
+ nd->mName.Set("WORLD");
+ }
+
+ m_scene->mRootNode = nd;
+}
+
+// ------------------------------------------------------------------------------------------------
+void XGLImporter::ReadLighting(XmlNode &node, TempScope &scope) {
+ const std::string &s = ai_stdStrToLower(node.name());
+ if (s == "directionallight") {
+ scope.light = ReadDirectionalLight(node);
+ } else if (s == "ambient") {
+ LogWarn("ignoring <ambient> tag");
+ } else if (s == "spheremap") {
+ LogWarn("ignoring <spheremap> tag");
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+aiLight *XGLImporter::ReadDirectionalLight(XmlNode &node) {
+ std::unique_ptr<aiLight> l(new aiLight());
+ l->mType = aiLightSource_DIRECTIONAL;
+ find_node_by_name_predicate predicate("directionallight");
+ XmlNode child = node.find_child(predicate);
+ if (child.empty()) {
+ return nullptr;
+ }
+
+ const std::string &s = ai_stdStrToLower(child.name());
+ if (s == "direction") {
+ l->mDirection = ReadVec3(child);
+ } else if (s == "diffuse") {
+ l->mColorDiffuse = ReadCol3(child);
+ } else if (s == "specular") {
+ l->mColorSpecular = ReadCol3(child);
+ }
+
+ return l.release();
+}
+
+// ------------------------------------------------------------------------------------------------
+aiNode *XGLImporter::ReadObject(XmlNode &node, TempScope &scope) {
+ aiNode *nd = new aiNode;
+ std::vector<aiNode *> children;
+ std::vector<unsigned int> meshes;
+
+ try {
+ for (XmlNode &child : node.children()) {
+ const std::string &s = ai_stdStrToLower(child.name());
+ if (s == "mesh") {
+ const size_t prev = scope.meshes_linear.size();
+ bool empty;
+ if (ReadMesh(child, scope, empty)) {
+ const size_t newc = scope.meshes_linear.size();
+ for (size_t i = 0; i < newc - prev; ++i) {
+ meshes.push_back(static_cast<unsigned int>(i + prev));
+ }
+ }
+ } else if (s == "mat") {
+ ReadMaterial(child, scope);
+ } else if (s == "object") {
+ children.push_back(ReadObject(child, scope));
+ } else if (s == "objectref") {
+ // XXX
+ } else if (s == "meshref") {
+ const unsigned int id = static_cast<unsigned int>(ReadIndexFromText(child));
+
+ std::multimap<unsigned int, aiMesh *>::iterator it = scope.meshes.find(id), end = scope.meshes.end();
+ if (it == end) {
+ ThrowException("<meshref> index out of range");
+ }
+
+ for (; it != end && (*it).first == id; ++it) {
+ // ok, this is n^2 and should get optimized one day
+ aiMesh *const m = it->second;
+ unsigned int i = 0, mcount = static_cast<unsigned int>(scope.meshes_linear.size());
+ for (; i < mcount; ++i) {
+ if (scope.meshes_linear[i] == m) {
+ meshes.push_back(i);
+ break;
+ }
+ }
+
+ ai_assert(i < mcount);
+ }
+ } else if (s == "transform") {
+ nd->mTransformation = ReadTrafo(child);
+ }
+ }
+ } catch (...) {
+ for (aiNode *ch : children) {
+ delete ch;
+ }
+ throw;
+ }
+
+ // FIX: since we used std::multimap<> to keep meshes by id, mesh order now depends on the behaviour
+ // of the multimap implementation with respect to the ordering of entries with same values.
+ // C++11 gives the guarantee that it uses insertion order, before it is implementation-specific.
+ // Sort by material id to always guarantee a deterministic result.
+ std::sort(meshes.begin(), meshes.end(), SortMeshByMaterialId(scope));
+
+ // link meshes to node
+ nd->mNumMeshes = static_cast<unsigned int>(meshes.size());
+ if (0 != nd->mNumMeshes) {
+ nd->mMeshes = new unsigned int[nd->mNumMeshes]();
+ for (unsigned int i = 0; i < nd->mNumMeshes; ++i) {
+ nd->mMeshes[i] = meshes[i];
+ }
+ }
+
+ // link children to parent
+ nd->mNumChildren = static_cast<unsigned int>(children.size());
+ if (nd->mNumChildren) {
+ nd->mChildren = new aiNode *[nd->mNumChildren]();
+ for (unsigned int i = 0; i < nd->mNumChildren; ++i) {
+ nd->mChildren[i] = children[i];
+ children[i]->mParent = nd;
+ }
+ }
+
+ return nd;
+}
+
+// ------------------------------------------------------------------------------------------------
+aiMatrix4x4 XGLImporter::ReadTrafo(XmlNode &node) {
+ aiVector3D forward, up, right, position;
+ float scale = 1.0f;
+
+ aiMatrix4x4 m;
+ XmlNode child = node.child("TRANSFORM");
+ if (child.empty()) {
+ return m;
+ }
+
+ for (XmlNode &sub_child : child.children()) {
+ const std::string &s = ai_stdStrToLower(sub_child.name());
+ if (s == "forward") {
+ forward = ReadVec3(sub_child);
+ } else if (s == "up") {
+ up = ReadVec3(sub_child);
+ } else if (s == "position") {
+ position = ReadVec3(sub_child);
+ }
+ if (s == "scale") {
+ scale = ReadFloat(sub_child);
+ if (scale < 0.f) {
+ // this is wrong, but we can leave the value and pass it to the caller
+ LogError("found negative scaling in <transform>, ignoring");
+ }
+ }
+ }
+
+ if (forward.SquareLength() < 1e-4 || up.SquareLength() < 1e-4) {
+ LogError("A direction vector in <transform> is zero, ignoring trafo");
+ return m;
+ }
+
+ forward.Normalize();
+ up.Normalize();
+
+ right = forward ^ up;
+ if (std::fabs(up * forward) > 1e-4) {
+ // this is definitely wrong - a degenerate coordinate space ruins everything
+ // so substitute identity transform.
+ LogError("<forward> and <up> vectors in <transform> are skewing, ignoring trafo");
+ return m;
+ }
+
+ right *= scale;
+ up *= scale;
+ forward *= scale;
+
+ m.a1 = right.x;
+ m.b1 = right.y;
+ m.c1 = right.z;
+
+ m.a2 = up.x;
+ m.b2 = up.y;
+ m.c2 = up.z;
+
+ m.a3 = forward.x;
+ m.b3 = forward.y;
+ m.c3 = forward.z;
+
+ m.a4 = position.x;
+ m.b4 = position.y;
+ m.c4 = position.z;
+
+ return m;
+}
+
+// ------------------------------------------------------------------------------------------------
+aiMesh *XGLImporter::ToOutputMesh(const TempMaterialMesh &m) {
+ std::unique_ptr<aiMesh> mesh(new aiMesh());
+
+ mesh->mNumVertices = static_cast<unsigned int>(m.positions.size());
+ mesh->mVertices = new aiVector3D[mesh->mNumVertices];
+ std::copy(m.positions.begin(), m.positions.end(), mesh->mVertices);
+
+ if (!m.normals.empty()) {
+ mesh->mNormals = new aiVector3D[mesh->mNumVertices];
+ std::copy(m.normals.begin(), m.normals.end(), mesh->mNormals);
+ }
+
+ if (!m.uvs.empty()) {
+ mesh->mNumUVComponents[0] = 2;
+ mesh->mTextureCoords[0] = new aiVector3D[mesh->mNumVertices];
+
+ for (unsigned int i = 0; i < mesh->mNumVertices; ++i) {
+ mesh->mTextureCoords[0][i] = aiVector3D(m.uvs[i].x, m.uvs[i].y, 0.f);
+ }
+ }
+
+ mesh->mNumFaces = static_cast<unsigned int>(m.vcounts.size());
+ mesh->mFaces = new aiFace[m.vcounts.size()];
+
+ unsigned int idx = 0;
+ for (unsigned int i = 0; i < mesh->mNumFaces; ++i) {
+ aiFace &f = mesh->mFaces[i];
+ f.mNumIndices = m.vcounts[i];
+ f.mIndices = new unsigned int[f.mNumIndices];
+ for (unsigned int c = 0; c < f.mNumIndices; ++c) {
+ f.mIndices[c] = idx++;
+ }
+ }
+
+ ai_assert(idx == mesh->mNumVertices);
+
+ mesh->mPrimitiveTypes = m.pflags;
+ mesh->mMaterialIndex = m.matid;
+
+ return mesh.release();
+}
+
+// ------------------------------------------------------------------------------------------------
+bool XGLImporter::ReadMesh(XmlNode &node, TempScope &scope, bool &empty) {
+ TempMesh t;
+
+ std::map<unsigned int, TempMaterialMesh> bymat;
+ const unsigned int mesh_id = ReadIDAttr(node);
+ bool empty_mesh = true;
+ for (XmlNode &child : node.children()) {
+ const std::string &s = ai_stdStrToLower(child.name());
+
+ if (s == "mat") {
+ ReadMaterial(child, scope);
+ } else if (s == "p") {
+ pugi::xml_attribute attr = child.attribute("ID");
+ if (attr.empty()) {
+ LogWarn("no ID attribute on <p>, ignoring");
+ } else {
+ int id = attr.as_int();
+ t.points[id] = ReadVec3(child);
+ }
+ } else if (s == "n") {
+ pugi::xml_attribute attr = child.attribute("ID");
+ if (attr.empty()) {
+ LogWarn("no ID attribute on <n>, ignoring");
+ } else {
+ int id = attr.as_int();
+ t.normals[id] = ReadVec3(child);
+ }
+ } else if (s == "tc") {
+ pugi::xml_attribute attr = child.attribute("ID");
+ if (attr.empty()) {
+ LogWarn("no ID attribute on <tc>, ignoring");
+ } else {
+ int id = attr.as_int();
+ t.uvs[id] = ReadVec2(child);
+ }
+ } else if (s == "f" || s == "l" || s == "p") {
+ const unsigned int vcount = s == "f" ? 3 : (s == "l" ? 2 : 1);
+
+ unsigned int mid = ~0u;
+ TempFace tf[3];
+ bool has[3] = { false };
+ for (XmlNode &sub_child : child.children()) {
+ const std::string &scn = ai_stdStrToLower(sub_child.name());
+ if (scn == "fv1" || scn == "lv1" || scn == "pv1") {
+ ReadFaceVertex(sub_child, t, tf[0]);
+ has[0] = true;
+ } else if (scn == "fv2" || scn == "lv2") {
+ ReadFaceVertex(sub_child, t, tf[1]);
+ has[1] = true;
+ } else if (scn == "fv3") {
+ ReadFaceVertex(sub_child, t, tf[2]);
+ has[2] = true;
+ } else if (scn == "mat") {
+ if (mid != ~0u) {
+ LogWarn("only one material tag allowed per <f>");
+ }
+ mid = ResolveMaterialRef(sub_child, scope);
+ } else if (scn == "matref") {
+ if (mid != ~0u) {
+ LogWarn("only one material tag allowed per <f>");
+ }
+ mid = ResolveMaterialRef(sub_child, scope);
+ }
+ }
+ if (has[0] || has[1] || has[2]) {
+ empty_mesh = false;
+ }
+
+ if (mid == ~0u) {
+ ThrowException("missing material index");
+ }
+
+ bool nor = false;
+ bool uv = false;
+ for (unsigned int i = 0; i < vcount; ++i) {
+ if (!has[i]) {
+ ThrowException("missing face vertex data");
+ }
+
+ nor = nor || tf[i].has_normal;
+ uv = uv || tf[i].has_uv;
+ }
+
+ if (mid >= (1 << 30)) {
+ LogWarn("material indices exhausted, this may cause errors in the output");
+ }
+ unsigned int meshId = mid | ((nor ? 1 : 0) << 31) | ((uv ? 1 : 0) << 30);
+
+ TempMaterialMesh &mesh = bymat[meshId];
+ mesh.matid = mid;
+
+ for (unsigned int i = 0; i < vcount; ++i) {
+ mesh.positions.push_back(tf[i].pos);
+ if (nor) {
+ mesh.normals.push_back(tf[i].normal);
+ }
+ if (uv) {
+ mesh.uvs.push_back(tf[i].uv);
+ }
+
+ mesh.pflags |= 1 << (vcount - 1);
+ }
+
+ mesh.vcounts.push_back(vcount);
+ }
+ }
+
+ // finally extract output meshes and add them to the scope
+ using pairt = std::pair<const unsigned int, TempMaterialMesh>;
+ for (const pairt &p : bymat) {
+ aiMesh *const m = ToOutputMesh(p.second);
+ scope.meshes_linear.push_back(m);
+
+ // if this is a definition, keep it on the stack
+ if (mesh_id != ~0u) {
+ scope.meshes.insert(std::pair<unsigned int, aiMesh *>(mesh_id, m));
+ }
+ }
+ if (empty_mesh) {
+ LogWarn("Mesh is empty, skipping.");
+ empty = empty_mesh;
+ return false;
+ }
+
+ // no id == not a reference, insert this mesh right *here*
+ return mesh_id == ~0u;
+}
+
+// ----------------------------------------------------------------------------------------------
+unsigned int XGLImporter::ResolveMaterialRef(XmlNode &node, TempScope &scope) {
+ const std::string &s = node.name();
+ if (s == "mat") {
+ ReadMaterial(node, scope);
+ return static_cast<unsigned int>(scope.materials_linear.size() - 1);
+ }
+
+ const int id = ReadIndexFromText(node);
+
+ auto it = scope.materials.find(id), end = scope.materials.end();
+ if (it == end) {
+ ThrowException("<matref> index out of range");
+ }
+
+ // ok, this is n^2 and should get optimized one day
+ aiMaterial *const m = it->second;
+
+ unsigned int i = 0, mcount = static_cast<unsigned int>(scope.materials_linear.size());
+ for (; i < mcount; ++i) {
+ if (scope.materials_linear[i] == m) {
+ return i;
+ }
+ }
+
+ ai_assert(false);
+
+ return 0;
+}
+
+// ------------------------------------------------------------------------------------------------
+void XGLImporter::ReadMaterial(XmlNode &node, TempScope &scope) {
+ const unsigned int mat_id = ReadIDAttr(node);
+
+ auto *mat(new aiMaterial);
+ for (XmlNode &child : node.children()) {
+ const std::string &s = ai_stdStrToLower(child.name());
+ if (s == "amb") {
+ const aiColor3D c = ReadCol3(child);
+ mat->AddProperty(&c, 1, AI_MATKEY_COLOR_AMBIENT);
+ } else if (s == "diff") {
+ const aiColor3D c = ReadCol3(child);
+ mat->AddProperty(&c, 1, AI_MATKEY_COLOR_DIFFUSE);
+ } else if (s == "spec") {
+ const aiColor3D c = ReadCol3(child);
+ mat->AddProperty(&c, 1, AI_MATKEY_COLOR_SPECULAR);
+ } else if (s == "emiss") {
+ const aiColor3D c = ReadCol3(child);
+ mat->AddProperty(&c, 1, AI_MATKEY_COLOR_EMISSIVE);
+ } else if (s == "alpha") {
+ const float f = ReadFloat(child);
+ mat->AddProperty(&f, 1, AI_MATKEY_OPACITY);
+ } else if (s == "shine") {
+ const float f = ReadFloat(child);
+ mat->AddProperty(&f, 1, AI_MATKEY_SHININESS);
+ }
+ }
+
+ scope.materials[mat_id] = mat;
+ scope.materials_linear.push_back(mat);
+}
+
+// ----------------------------------------------------------------------------------------------
+void XGLImporter::ReadFaceVertex(XmlNode &node, const TempMesh &t, TempFace &out) {
+ bool havep = false;
+ for (XmlNode &child : node.children()) {
+ const std::string &s = ai_stdStrToLower(child.name());
+ if (s == "pref") {
+ const unsigned int id = ReadIndexFromText(child);
+ std::map<unsigned int, aiVector3D>::const_iterator it = t.points.find(id);
+ if (it == t.points.end()) {
+ ThrowException("point index out of range");
+ }
+
+ out.pos = (*it).second;
+ havep = true;
+ } else if (s == "nref") {
+ const unsigned int id = ReadIndexFromText(child);
+ std::map<unsigned int, aiVector3D>::const_iterator it = t.normals.find(id);
+ if (it == t.normals.end()) {
+ ThrowException("normal index out of range");
+ }
+
+ out.normal = (*it).second;
+ out.has_normal = true;
+ } else if (s == "tcref") {
+ const unsigned int id = ReadIndexFromText(child);
+ std::map<unsigned int, aiVector2D>::const_iterator it = t.uvs.find(id);
+ if (it == t.uvs.end()) {
+ ThrowException("uv index out of range");
+ }
+
+ out.uv = (*it).second;
+ out.has_uv = true;
+ } else if (s == "p") {
+ out.pos = ReadVec3(child);
+ } else if (s == "n") {
+ out.normal = ReadVec3(child);
+ } else if (s == "tc") {
+ out.uv = ReadVec2(child);
+ }
+ }
+
+ if (!havep) {
+ ThrowException("missing <pref> in <fvN> element");
+ }
+}
+
+// ------------------------------------------------------------------------------------------------
+unsigned int XGLImporter::ReadIDAttr(XmlNode &node) {
+ for (pugi::xml_attribute attr : node.attributes()) {
+ if (!ASSIMP_stricmp(attr.name(), "id")) {
+ return attr.as_int();
+ }
+ }
+
+ return ~0u;
+}
+
+// ------------------------------------------------------------------------------------------------
+float XGLImporter::ReadFloat(XmlNode &node) {
+ std::string v;
+ XmlParser::getValueAsString(node, v);
+ const char *s = v.c_str(), *se;
+ if (!SkipSpaces(&s)) {
+ LogError("unexpected EOL, failed to parse index element");
+ return 0.f;
+ }
+ float t;
+ se = fast_atoreal_move(s, t);
+ if (se == s) {
+ LogError("failed to read float text");
+ return 0.f;
+ }
+
+ return t;
+}
+
+// ------------------------------------------------------------------------------------------------
+unsigned int XGLImporter::ReadIndexFromText(XmlNode &node) {
+ std::string v;
+ XmlParser::getValueAsString(node, v);
+ const char *s = v.c_str();
+ if (!SkipSpaces(&s)) {
+ LogError("unexpected EOL, failed to parse index element");
+ return ~0u;
+ }
+ const char *se;
+ const unsigned int t = strtoul10(s, &se);
+
+ if (se == s) {
+ LogError("failed to read index");
+ return ~0u;
+ }
+
+ return t;
+}
+
+// ------------------------------------------------------------------------------------------------
+aiVector2D XGLImporter::ReadVec2(XmlNode &node) {
+ aiVector2D vec;
+ std::string val;
+ XmlParser::getValueAsString(node, val);
+ const char *s = val.c_str();
+ ai_real v[2] = {};
+ for (int i = 0; i < 2; ++i) {
+ if (!SkipSpaces(&s)) {
+ LogError("unexpected EOL, failed to parse vec2");
+ return vec;
+ }
+
+ v[i] = fast_atof(&s);
+
+ SkipSpaces(&s);
+ if (i != 1 && *s != ',') {
+ LogError("expected comma, failed to parse vec2");
+ return vec;
+ }
+ ++s;
+ }
+ vec.x = v[0];
+ vec.y = v[1];
+
+ return vec;
+}
+
+// ------------------------------------------------------------------------------------------------
+aiVector3D XGLImporter::ReadVec3(XmlNode &node) {
+ aiVector3D vec;
+ std::string v;
+ XmlParser::getValueAsString(node, v);
+ const char *s = v.c_str();
+ for (int i = 0; i < 3; ++i) {
+ if (!SkipSpaces(&s)) {
+ LogError("unexpected EOL, failed to parse vec3");
+ return vec;
+ }
+ vec[i] = fast_atof(&s);
+
+ SkipSpaces(&s);
+ if (i != 2 && *s != ',') {
+ LogError("expected comma, failed to parse vec3");
+ return vec;
+ }
+ ++s;
+ }
+
+ return vec;
+}
+
+// ------------------------------------------------------------------------------------------------
+aiColor3D XGLImporter::ReadCol3(XmlNode &node) {
+ const aiVector3D &v = ReadVec3(node);
+ if (v.x < 0.f || v.x > 1.0f || v.y < 0.f || v.y > 1.0f || v.z < 0.f || v.z > 1.0f) {
+ LogWarn("color values out of range, ignoring");
+ }
+ return aiColor3D(v.x, v.y, v.z);
+}
+
+#endif // ASSIMP_BUILD_NO_XGL_IMPORTER
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-01 14:38:05 +0000