org.lwjgl.assimp.AIScene Java Examples

@Override
public IAssimpScene loadScene(File file)
{
    AIPropertyStore settings = Assimp.aiCreatePropertyStore();
    Assimp.aiSetImportPropertyInteger(settings, Assimp.AI_CONFIG_PP_SLM_VERTEX_LIMIT, 65535);

    AIScene scene = Assimp.aiImportFile(file.toString(),
            Assimp.aiProcess_Triangulate | Assimp.aiProcess_GenSmoothNormals | Assimp.aiProcess_FlipUVs
                    | Assimp.aiProcess_CalcTangentSpace | Assimp.aiProcess_LimitBoneWeights
                    | Assimp.aiProcess_SplitLargeMeshes | Assimp.aiProcess_OptimizeMeshes
                    | Assimp.aiProcess_JoinIdenticalVertices);

    Assimp.aiReleasePropertyStore(settings);

    if (scene == null)
        return null;

    return new AssimpScene(scene);
}
 

public static Mesh[] load(String resourcePath, String texturesDir, int flags) throws Exception {
    AIScene aiScene = aiImportFile(resourcePath, flags);
    if (aiScene == null) {
        throw new Exception("Error loading model [resourcePath: "  + resourcePath + ", texturesDir:" + texturesDir + "]");
    }

    int numMaterials = aiScene.mNumMaterials();
    PointerBuffer aiMaterials = aiScene.mMaterials();
    List<Material> materials = new ArrayList<>();
    for (int i = 0; i < numMaterials; i++) {
        AIMaterial aiMaterial = AIMaterial.create(aiMaterials.get(i));
        processMaterial(aiMaterial, materials, texturesDir);
    }

    int numMeshes = aiScene.mNumMeshes();
    PointerBuffer aiMeshes = aiScene.mMeshes();
    Mesh[] meshes = new Mesh[numMeshes];
    for (int i = 0; i < numMeshes; i++) {
        AIMesh aiMesh = AIMesh.create(aiMeshes.get(i));
        Mesh mesh = processMesh(aiMesh, materials);
        meshes[i] = mesh;
    }

    return meshes;
}
 

private static Map<String, Animation> processAnimations(AIScene aiScene, List<Bone> boneList,
        Node rootNode, Matrix4f rootTransformation) {
    Map<String, Animation> animations = new HashMap<>();

    // Process all animations
    int numAnimations = aiScene.mNumAnimations();
    PointerBuffer aiAnimations = aiScene.mAnimations();
    for (int i = 0; i < numAnimations; i++) {
        AIAnimation aiAnimation = AIAnimation.create(aiAnimations.get(i));

        // Calculate transformation matrices for each node
        int numChanels = aiAnimation.mNumChannels();
        PointerBuffer aiChannels = aiAnimation.mChannels();
        for (int j = 0; j < numChanels; j++) {
            AINodeAnim aiNodeAnim = AINodeAnim.create(aiChannels.get(j));
            String nodeName = aiNodeAnim.mNodeName().dataString();
            Node node = rootNode.findByName(nodeName);
            buildTransFormationMatrices(aiNodeAnim, node);
        }

        List<AnimatedFrame> frames = buildAnimationFrames(boneList, rootNode, rootTransformation);
        Animation animation = new Animation(aiAnimation.mName().dataString(), frames, aiAnimation.mDuration());
        animations.put(animation.getName(), animation);
    }
    return animations;
}
 

public static Mesh[] load(String resourcePath, String texturesDir, int flags) throws Exception {
    AIScene aiScene = aiImportFile(resourcePath, flags);
    if (aiScene == null) {
        throw new Exception("Error loading model");
    }

    int numMaterials = aiScene.mNumMaterials();
    PointerBuffer aiMaterials = aiScene.mMaterials();
    List<Material> materials = new ArrayList<>();
    for (int i = 0; i < numMaterials; i++) {
        AIMaterial aiMaterial = AIMaterial.create(aiMaterials.get(i));
        processMaterial(aiMaterial, materials, texturesDir);
    }

    int numMeshes = aiScene.mNumMeshes();
    PointerBuffer aiMeshes = aiScene.mMeshes();
    Mesh[] meshes = new Mesh[numMeshes];
    for (int i = 0; i < numMeshes; i++) {
        AIMesh aiMesh = AIMesh.create(aiMeshes.get(i));
        Mesh mesh = processMesh(aiMesh, materials);
        meshes[i] = mesh;
    }

    return meshes;
}
 

public static Mesh[] load(String resourcePath, String texturesDir, int flags) throws Exception {
    AIScene aiScene = aiImportFile(resourcePath, flags);
    if (aiScene == null) {
        throw new Exception("Error loading model");
    }

    int numMaterials = aiScene.mNumMaterials();
    PointerBuffer aiMaterials = aiScene.mMaterials();
    List<Material> materials = new ArrayList<>();
    for (int i = 0; i < numMaterials; i++) {
        AIMaterial aiMaterial = AIMaterial.create(aiMaterials.get(i));
        processMaterial(aiMaterial, materials, texturesDir);
    }

    int numMeshes = aiScene.mNumMeshes();
    PointerBuffer aiMeshes = aiScene.mMeshes();
    Mesh[] meshes = new Mesh[numMeshes];
    for (int i = 0; i < numMeshes; i++) {
        AIMesh aiMesh = AIMesh.create(aiMeshes.get(i));
        Mesh mesh = processMesh(aiMesh, materials);
        meshes[i] = mesh;
    }

    return meshes;
}
 

private static Map<String, Animation> processAnimations(AIScene aiScene, List<Bone> boneList,
        Node rootNode, Matrix4f rootTransformation) {
    Map<String, Animation> animations = new HashMap<>();

    // Process all animations
    int numAnimations = aiScene.mNumAnimations();
    PointerBuffer aiAnimations = aiScene.mAnimations();
    for (int i = 0; i < numAnimations; i++) {
        AIAnimation aiAnimation = AIAnimation.create(aiAnimations.get(i));

        // Calculate transformation matrices for each node
        int numChanels = aiAnimation.mNumChannels();
        PointerBuffer aiChannels = aiAnimation.mChannels();
        for (int j = 0; j < numChanels; j++) {
            AINodeAnim aiNodeAnim = AINodeAnim.create(aiChannels.get(j));
            String nodeName = aiNodeAnim.mNodeName().dataString();
            Node node = rootNode.findByName(nodeName);
            buildTransFormationMatrices(aiNodeAnim, node);
        }

        List<AnimatedFrame> frames = buildAnimationFrames(boneList, rootNode, rootTransformation);
        Animation animation = new Animation(aiAnimation.mName().dataString(), frames, aiAnimation.mDuration());
        animations.put(animation.getName(), animation);
    }
    return animations;
}
 

@Override
public IAssimpScene loadScene(File file)
{
    AIPropertyStore settings = Assimp.aiCreatePropertyStore();
    Assimp.aiSetImportPropertyInteger(settings, Assimp.AI_CONFIG_PP_SLM_VERTEX_LIMIT, 65535);

    AIScene scene = Assimp.aiImportFile(file.toString(),
            Assimp.aiProcess_Triangulate | Assimp.aiProcess_GenSmoothNormals | Assimp.aiProcess_FlipUVs
                    | Assimp.aiProcess_CalcTangentSpace | Assimp.aiProcess_LimitBoneWeights
                    | Assimp.aiProcess_SplitLargeMeshes | Assimp.aiProcess_OptimizeMeshes
                    | Assimp.aiProcess_JoinIdenticalVertices);

    Assimp.aiReleasePropertyStore(settings);

    if (scene == null)
        return null;

    return new AssimpScene(scene);
}
 

public static AnimGameItem loadAnimGameItem(String resourcePath, String texturesDir, int flags)
        throws Exception {
    AIScene aiScene = aiImportFile(resourcePath, flags);
    if (aiScene == null) {
        throw new Exception("Error loading model");
    }

    int numMaterials = aiScene.mNumMaterials();
    PointerBuffer aiMaterials = aiScene.mMaterials();
    List<Material> materials = new ArrayList<>();
    for (int i = 0; i < numMaterials; i++) {
        AIMaterial aiMaterial = AIMaterial.create(aiMaterials.get(i));
        processMaterial(aiMaterial, materials, texturesDir);
    }

    List<Bone> boneList = new ArrayList<>();
    int numMeshes = aiScene.mNumMeshes();
    PointerBuffer aiMeshes = aiScene.mMeshes();
    Mesh[] meshes = new Mesh[numMeshes];
    for (int i = 0; i < numMeshes; i++) {
        AIMesh aiMesh = AIMesh.create(aiMeshes.get(i));
        Mesh mesh = processMesh(aiMesh, materials, boneList);
        meshes[i] = mesh;
    }

    AINode aiRootNode = aiScene.mRootNode();
    Matrix4f rootTransfromation = AnimMeshesLoader.toMatrix(aiRootNode.mTransformation());
    Node rootNode = processNodesHierarchy(aiRootNode, null);
    Map<String, Animation> animations = processAnimations(aiScene, boneList, rootNode, rootTransfromation);
    AnimGameItem item = new AnimGameItem(meshes, animations);

    return item;
}
 

public static AnimGameItem loadAnimGameItem(String resourcePath, String texturesDir, int flags)
        throws Exception {
    AIScene aiScene = aiImportFile(resourcePath, flags);
    if (aiScene == null) {
        throw new Exception("Error loading model");
    }

    int numMaterials = aiScene.mNumMaterials();
    PointerBuffer aiMaterials = aiScene.mMaterials();
    List<Material> materials = new ArrayList<>();
    for (int i = 0; i < numMaterials; i++) {
        AIMaterial aiMaterial = AIMaterial.create(aiMaterials.get(i));
        processMaterial(aiMaterial, materials, texturesDir);
    }

    List<Bone> boneList = new ArrayList<>();
    int numMeshes = aiScene.mNumMeshes();
    PointerBuffer aiMeshes = aiScene.mMeshes();
    Mesh[] meshes = new Mesh[numMeshes];
    for (int i = 0; i < numMeshes; i++) {
        AIMesh aiMesh = AIMesh.create(aiMeshes.get(i));
        Mesh mesh = processMesh(aiMesh, materials, boneList);
        meshes[i] = mesh;
    }

    AINode aiRootNode = aiScene.mRootNode();
    Matrix4f rootTransfromation = AnimMeshesLoader.toMatrix(aiRootNode.mTransformation());
    Node rootNode = processNodesHierarchy(aiRootNode, null);
    Map<String, Animation> animations = processAnimations(aiScene, boneList, rootNode, rootTransfromation);
    AnimGameItem item = new AnimGameItem(meshes, animations);

    return item;
}
 

public static List<Model> loadModel(String path, String file) {
		
		List<Model> models = new ArrayList<>();
//		List<Material<VkImage>> materials = new ArrayList<>();
		
		path = VkAssimpModelLoader.class.getClassLoader().getResource(path).getPath();
		// For Linux need to keep '/' or else the Assimp.aiImportFile(...) call below returns null!
		if (System.getProperty("os.name").contains("Windows")) { // TODO Language/region agnostic value for 'Windows' ?
			if (path.startsWith("/"))
				path = path.substring(1);
		}

		AIScene aiScene = Assimp.aiImportFile(path + "/" + file, 0);
		
//		if (aiScene.mMaterials() != null){
//			for (int i=0; i<aiScene.mNumMaterials(); i++){
//				AIMaterial aiMaterial = AIMaterial.create(aiScene.mMaterials().get(i));
//				Material<GLTexture> material = processMaterial(aiMaterial, path);
//				materials.add(material);
//			}
//		}
		
		for (int i=0; i<aiScene.mNumMeshes(); i++){
			AIMesh aiMesh = AIMesh.create(aiScene.mMeshes().get(i));
			Mesh mesh = processMesh(aiMesh);
			Model model = new Model();
			model.setMesh(mesh);
//			int materialIndex = aiMesh.mMaterialIndex();
//			model.setMaterial(materials.get(materialIndex));
			models.add(model);
		}
		
		return models;
	}
 

private AssimpScene(AIScene scene)
{
    this.scene = scene;
}
 

private AssimpScene(AIScene scene)
{
    this.scene = scene;
}