Method InternReadFile

code/AssetLib/COB/COBLoader.cpp:138–226

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

// ------------------------------------------------------------------------------------------------
// Imports the given file into the given scene structure.
void COBImporter::InternReadFile(const std::string &pFile, aiScene *pScene, IOSystem *pIOHandler) {
    COB::Scene scene;

    auto file = pIOHandler->Open(pFile, "rb");
    if (!file) {
        ThrowException("Could not open " + pFile);
    }

    std::unique_ptr<StreamReaderLE> stream(new StreamReaderLE(file));

    // check header
    static constexpr size_t HeaderSize = 32u;
    char head[HeaderSize] = {};
    stream->CopyAndAdvance(head, HeaderSize);

    // load data into intermediate structures
    if (head[15] == 'A') {
        if (!isValidASCIIHeader(head)) {
            ThrowException("Invalid ASCII file header");
        }
        ReadAsciiFile(scene, stream.get());
    } else {
        ReadBinaryFile(scene, stream.get());
    }
    if (scene.nodes.empty()) {
        ThrowException("No nodes loaded");
    }

    // sort faces by material indices
    for (std::shared_ptr<Node> &n : scene.nodes) {
        if (n->type == Node::TYPE_MESH) {
            Mesh &mesh = (Mesh &)(*n);
            for (Face &f : mesh.faces) {
                mesh.temp_map[f.material].push_back(&f);
            }
        }
    }

    // count meshes
    for (std::shared_ptr<Node> &n : scene.nodes) {
        if (n->type == Node::TYPE_MESH) {
            Mesh &mesh = (Mesh &)(*n);
            if (mesh.vertex_positions.size() && mesh.texture_coords.size()) {
                pScene->mNumMeshes += static_cast<unsigned int>(mesh.temp_map.size());
            }
        }
    }
    pScene->mMeshes = new aiMesh *[pScene->mNumMeshes]();
    pScene->mMaterials = new aiMaterial *[pScene->mNumMeshes]();
    pScene->mNumMeshes = 0;

    // count lights and cameras
    for (std::shared_ptr<Node> &n : scene.nodes) {
        if (n->type == Node::TYPE_LIGHT) {
            ++pScene->mNumLights;
        } else if (n->type == Node::TYPE_CAMERA) {
            ++pScene->mNumCameras;
        }