C++ ModelLoader::load方法代码示例

 Scene* makeScene(){
   ModelLoader loader;
   Object* o = loader.load("teapot.obj", true);
   o->setDrawMode( GL_TRIANGLES );// Render mode: triangluar mesh
   o->glSetTexture(0, "test0.png");// Texture
   o->glSetTexture(1, pSkyTech->getTexture() );  // Environment map.
   o->glSetTexture(2, pShadowTarget->getColorTexture() );  // Blurred shadows-only image. for soft-shadows.
   o->glSetTexture(3, pShadowsHV->getColorTexture() );
   o->glSetTexture(0, new Texture( GL_TEXTURE_2D, pCube->getTexture() ) );
   Scene* sc = new Scene();
   sc->addObject(o);
   return sc;
 }

void GeometryReader::run() {
    DependencyManager::get<StatTracker>()->decrementStat("PendingProcessing");
    CounterStat counter("Processing");
    PROFILE_RANGE_EX(resource_parse_geometry, "GeometryReader::run", 0xFF00FF00, 0, { { "url", _url.toString() } });
    auto originalPriority = QThread::currentThread()->priority();
    if (originalPriority == QThread::InheritPriority) {
        originalPriority = QThread::NormalPriority;
    }
    QThread::currentThread()->setPriority(QThread::LowPriority);
    Finally setPriorityBackToNormal([originalPriority]() {
        QThread::currentThread()->setPriority(originalPriority);
    });

    if (!_resource.data()) {
        return;
    }

    try {
        if (_data.isEmpty()) {
            throw QString("reply is NULL");
        }

        // Ensure the resource has not been deleted
        auto resource = _resource.toStrongRef();
        if (!resource) {
            qCWarning(modelnetworking) << "Abandoning load of" << _url << "; could not get strong ref";
            return;
        }

        if (_url.path().isEmpty()) {
            throw QString("url is invalid");
        }

        HFMModel::Pointer hfmModel;
        QVariantHash serializerMapping = _mapping.second;
        serializerMapping["combineParts"] = _combineParts;
        serializerMapping["deduplicateIndices"] = true;

        if (_url.path().toLower().endsWith(".gz")) {
            QByteArray uncompressedData;
            if (!gunzip(_data, uncompressedData)) {
                throw QString("failed to decompress .gz model");
            }
            // Strip the compression extension from the path, so the loader can infer the file type from what remains.
            // This is okay because we don't expect the serializer to be able to read the contents of a compressed model file.
            auto strippedUrl = _url;
            strippedUrl.setPath(_url.path().left(_url.path().size() - 3));
            hfmModel = _modelLoader.load(uncompressedData, serializerMapping, strippedUrl, "");
        } else {
            hfmModel = _modelLoader.load(_data, serializerMapping, _url, _webMediaType.toStdString());
        }

        if (!hfmModel) {
            throw QString("unsupported format");
        }

        if (hfmModel->meshes.empty() || hfmModel->joints.empty()) {
            throw QString("empty geometry, possibly due to an unsupported model version");
        }

        // Add scripts to hfmModel
        if (!serializerMapping.value(SCRIPT_FIELD).isNull()) {
            QVariantList scripts = serializerMapping.values(SCRIPT_FIELD);
            for (auto &script : scripts) {
                hfmModel->scripts.push_back(script.toString());
            }
        }

        // Do processing on the model
        baker::Baker modelBaker(hfmModel, _mapping.second, _mapping.first);
        modelBaker.run();

        auto processedHFMModel = modelBaker.getHFMModel();
        auto materialMapping = modelBaker.getMaterialMapping();

        QMetaObject::invokeMethod(resource.data(), "setGeometryDefinition",
                Q_ARG(HFMModel::Pointer, processedHFMModel), Q_ARG(MaterialMapping, materialMapping));
    } catch (const std::exception&) {
        auto resource = _resource.toStrongRef();
        if (resource) {
            QMetaObject::invokeMethod(resource.data(), "finishedLoading",
                Q_ARG(bool, false));
        }
    } catch (QString& e) {
        qCWarning(modelnetworking) << "Exception while loading model --" << e;
        auto resource = _resource.toStrongRef();
        if (resource) {
            QMetaObject::invokeMethod(resource.data(), "finishedLoading",
                                      Q_ARG(bool, false));
        }
    }
}