Method InternReadFile

code/AssetLib/Unreal/UnrealLoader.cpp:199–513

------------------------------------------------------------------------------------------------ Imports the given file into the given scene structure.

// ------------------------------------------------------------------------------------------------
// Imports the given file into the given scene structure.
void UnrealImporter::InternReadFile(const std::string &pFile,
        aiScene *pScene, IOSystem *pIOHandler) {
    // For any of the 3 files being passed get the three correct paths
    // First of all, determine file extension
    std::string::size_type pos = pFile.find_last_of('.');
    std::string extension = GetExtension(pFile);

    std::string d_path, a_path, uc_path;
    if (extension == "3d") {
        // jjjj_d.3d
        // jjjj_a.3d
        pos = pFile.find_last_of('_');
        if (std::string::npos == pos) {
            throw DeadlyImportError("UNREAL: Unexpected naming scheme");
        }
        extension = pFile.substr(0, pos);
    } else {
        extension = pFile.substr(0, pos);
    }

    // build proper paths
    d_path = extension + "_d.3d";
    a_path = extension + "_a.3d";
    uc_path = extension + ".uc";

    ASSIMP_LOG_DEBUG("UNREAL: data file is ", d_path);
    ASSIMP_LOG_DEBUG("UNREAL: aniv file is ", a_path);
    ASSIMP_LOG_DEBUG("UNREAL: uc file is ", uc_path);

    // and open the files ... we can't live without them
    std::unique_ptr<IOStream> p(pIOHandler->Open(d_path));
    if (!p)
        throw DeadlyImportError("UNREAL: Unable to open _d file");
    StreamReaderLE d_reader(pIOHandler->Open(d_path));

    const uint16_t numTris = d_reader.GetI2();
    const uint16_t numVert = d_reader.GetI2();
    d_reader.IncPtr(44);
    if (!numTris || numVert < 3) {
        throw DeadlyImportError("UNREAL: Invalid number of vertices/triangles");
    }

    // maximum texture index
    unsigned int maxTexIdx = 0;

    // collect triangles
    std::vector<Unreal::Triangle> triangles(numTris);
    for (auto &tri : triangles) {
        for (unsigned int i = 0; i < 3; ++i) {
            tri.mVertex[i] = d_reader.GetI2();
            if (tri.mVertex[i] >= numTris) {
                ASSIMP_LOG_WARN("UNREAL: vertex index out of range");
                tri.mVertex[i] = 0;
            }
        }
        tri.mType = d_reader.GetI1();

        // handle mesh flagss?