// ------------------------------------------------------------------------------------------------
// Imports the given file into the given scene structure.
void C4DImporter::InternReadFile( const std::string& pFile,
aiScene* pScene, IOSystem* pIOHandler)
{
std::unique_ptr<IOStream> file( pIOHandler->Open( pFile));
if( file.get() == NULL) {
ThrowException("failed to open file " + pFile);
}
const size_t file_size = file->FileSize();
std::vector<uint8_t> mBuffer(file_size);
file->Read(&mBuffer[0], 1, file_size);
Filename f;
f.SetMemoryReadMode(&mBuffer[0], file_size);
// open document first
BaseDocument* doc = LoadDocument(f, SCENEFILTER_OBJECTS | SCENEFILTER_MATERIALS);
if(doc == NULL) {
ThrowException("failed to read document " + pFile);
}
pScene->mRootNode = new aiNode("<C4DRoot>");
// first convert all materials
ReadMaterials(doc->GetFirstMaterial());
// process C4D scenegraph recursively
try {
RecurseHierarchy(doc->GetFirstObject(), pScene->mRootNode);
}
catch(...) {
for(aiMesh* mesh : meshes) {
delete mesh;
}
BaseDocument::Free(doc);
throw;
}
BaseDocument::Free(doc);
// copy meshes over
pScene->mNumMeshes = static_cast<unsigned int>(meshes.size());
pScene->mMeshes = new aiMesh*[pScene->mNumMeshes]();
std::copy(meshes.begin(), meshes.end(), pScene->mMeshes);
// copy materials over, adding a default material if necessary
unsigned int mat_count = static_cast<unsigned int>(materials.size());
for(aiMesh* mesh : meshes) {
ai_assert(mesh->mMaterialIndex <= mat_count);
if(mesh->mMaterialIndex >= mat_count) {
++mat_count;
ScopeGuard<aiMaterial> def_material(new aiMaterial());
const aiString name(AI_DEFAULT_MATERIAL_NAME);
def_material->AddProperty(&name, AI_MATKEY_NAME);
materials.push_back(def_material.dismiss());
break;
}
}
pScene->mNumMaterials = static_cast<unsigned int>(materials.size());
pScene->mMaterials = new aiMaterial*[pScene->mNumMaterials]();
std::copy(materials.begin(), materials.end(), pScene->mMaterials);
}
