/src/assimp/code/AssetLib/XGL/XGLLoader.cpp

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/*
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  following disclaimer.

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/** @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 <memory>
#include <utility>

namespace Assimp {

static constexpr uint32_t ErrorId = ~0u;

template <>
const char *LogFunctions<XGLImporter>::Prefix() {
  return "XGL: ";
}

static constexpr aiImporterDesc desc = {
  "XGL Importer", "", "",  "",
    aiImporterFlags_SupportTextFlavour | aiImporterFlags_SupportCompressedFlavour,
  0,  0,  0,  0,  "xgl zgl"};

// ------------------------------------------------------------------------------------------------
XGLImporter::XGLImporter() : mXmlParser(nullptr), m_scene(nullptr) {
    // empty
}

// ------------------------------------------------------------------------------------------------
XGLImporter::~XGLImporter() {
    clear();
}

// ------------------------------------------------------------------------------------------------
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));
}

// ------------------------------------------------------------------------------------------------
const aiImporterDesc *XGLImporter::GetInfo() const {
  return &desc;
}

// ------------------------------------------------------------------------------------------------
void XGLImporter::InternReadFile(const std::string &pFile, aiScene *pScene, IOSystem *pIOHandler) {
    clear();
#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 == nullptr) {
        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 = std::make_shared<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);
  }

  MeshArray &meshes = scope.meshes_linear;
  std::vector<aiMaterial *> &materials = scope.materials_linear;
  if (meshes.empty() || materials.empty()) {
    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::clear() {
    delete mXmlParser;
    mXmlParser = nullptr;
}


// ------------------------------------------------------------------------------------------------
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 == nullptr) {
    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(std::move(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();
        if (ReadMesh(child, scope)) {
          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") {
        const uint32_t matId = ReadMaterial(child, scope);
                if (matId == ErrorId) {
                    ThrowException("Invalid material id detected.");
                }
      } 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();
}


// ------------------------------------------------------------------------------------------------
inline static unsigned int generateMeshId(unsigned int meshId, bool nor, bool uv) {
    unsigned int currentMeshId = meshId | ((nor ? 1 : 0) << 31) | ((uv ? 1 : 0) << 30);
    return currentMeshId;
}

// ------------------------------------------------------------------------------------------------
bool XGLImporter::ReadMesh(XmlNode &node, TempScope &scope) {
  TempMesh t;
    uint32_t matId = 99999;
    bool mesh_created = false;
  std::map<unsigned int, TempMaterialMesh> bymat;
    const unsigned int mesh_id = ReadIDAttr(node);
  for (XmlNode &child : node.children()) {
        const std::string &s = ai_stdStrToLower(child.name());

    if (s == "mat") {
      matId = 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 meshId = ErrorId;
            TempFace tempFace[3] = {};
      bool has[3] = { false };
            meshId = ReadVertices(child, t, tempFace, has, meshId, scope);
            if (meshId == ErrorId) {
        ThrowException("missing material index");
      }

      bool nor = false, uv = false;
      for (unsigned int i = 0; i < vcount; ++i) {
        if (!has[i]) {
          ThrowException("missing face vertex data");
        }

        nor = nor || tempFace[i].has_normal;
        uv = uv || tempFace[i].has_uv;
      }

      if (meshId >= (1 << 30)) {
        LogWarn("material indices exhausted, this may cause errors in the output");
      }
            const unsigned int currentMeshId = generateMeshId(meshId, nor, uv);

            // Generate the temp mesh
      TempMaterialMesh &mesh = bymat[currentMeshId];
            mesh.matid = meshId;
            mesh_created = true;

      for (unsigned int i = 0; i < vcount; ++i) {
        mesh.positions.push_back(tempFace[i].pos);
        if (nor) {
          mesh.normals.push_back(tempFace[i].normal);
        }
        if (uv) {
          mesh.uvs.push_back(tempFace[i].uv);
        }

        mesh.pflags |= 1 << (vcount - 1);
      }

      mesh.vcounts.push_back(vcount);
    }
  }

    if (!mesh_created) {
        TempMaterialMesh &mesh = bymat[mesh_id];
        mesh.matid = matId;
    }

  // finally extract output meshes and add them to the scope
    AppendOutputMeshes(bymat, scope, mesh_id);

  // no id == not a reference, insert this mesh right *here*
    return mesh_id == ErrorId;
}

// ----------------------------------------------------------------------------------------------
void XGLImporter::AppendOutputMeshes(std::map<unsigned int, TempMaterialMesh> bymat, TempScope &scope,
        const unsigned int mesh_id) {
    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 != ErrorId) {
            scope.meshes.insert(std::pair<unsigned int, aiMesh *>(mesh_id, m));
        }
    }
}

// ----------------------------------------------------------------------------------------------
unsigned int XGLImporter::ReadVertices(XmlNode &child, TempMesh t, TempFace *tf, bool *has, unsigned int mid, TempScope &scope) {
    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 != ErrorId) {
                LogWarn("only one material tag allowed per <f>");
            }
            mid = ResolveMaterialRef(sub_child, scope);
        } else if (scn == "matref") {
            if (mid != ErrorId) {
                LogWarn("only one material tag allowed per <f>");
            }
            mid = ResolveMaterialRef(sub_child, scope);
        }
    }
    return mid;
}

// ----------------------------------------------------------------------------------------------
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;
}

// ------------------------------------------------------------------------------------------------
unsigned int 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);

    return mat_id;
}

// ----------------------------------------------------------------------------------------------
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 ErrorId;
}

// ------------------------------------------------------------------------------------------------
float XGLImporter::ReadFloat(XmlNode &node) {
    std::string v;
    XmlParser::getValueAsString(node, v);
    const char *s = v.c_str();
    const char *end = v.c_str() + v.size();
  if (!SkipSpaces(&s, end)) {
    LogError("unexpected EOL, failed to parse index element");
    return 0.f;
  }
    float t{ 0.0f };
  const char *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();
    const char *end = v.c_str() + v.size();
    if (!SkipSpaces(&s, end)) {
    LogError("unexpected EOL, failed to parse index element");
        return ErrorId;
  }
  const char *se = nullptr;
  const unsigned int t = strtoul10(s, &se);

  if (se == s) {
    LogError("failed to read index");
        return ErrorId;
  }

  return t;
}

// ------------------------------------------------------------------------------------------------
aiVector2D XGLImporter::ReadVec2(XmlNode &node) {
  aiVector2D vec;
    std::string val;
    XmlParser::getValueAsString(node, val);
    const char *s = val.c_str();
    const char *end = val.c_str() + val.size();
    ai_real v[2] = {};
  for (int i = 0; i < 2; ++i) {
    if (!SkipSpaces(&s, end)) {
      LogError("unexpected EOL, failed to parse vec2");
      return vec;
    }

    v[i] = fast_atof(&s);

    SkipSpaces(&s, end);
    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();
    const char *end = v.c_str() + v.size();
  for (int i = 0; i < 3; ++i) {
    if (!SkipSpaces(&s, end)) {
      LogError("unexpected EOL, failed to parse vec3");
      return vec;
    }
    vec[i] = fast_atof(&s);

    SkipSpaces(&s, end);
    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);
}

} // namespace Assimp

#endif // ASSIMP_BUILD_NO_XGL_IMPORTER

Coverage Report

Created: 2025-08-03 06:54