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Example 6 with GLTFAccessor

use of org.terasology.engine.rendering.gltf.model.GLTFAccessor in project Terasology by MovingBlocks.

the class GLTFSkeletalMeshFormat method load.

@Override
public SkeletalMeshData load(ResourceUrn urn, List<AssetDataFile> inputs) throws IOException {
    try (Reader in = new InputStreamReader(inputs.get(0).openStream())) {
        GLTF gltf = gson.fromJson(in, GLTF.class);
        checkVersionSupported(urn, gltf);
        checkMeshPresent(urn, gltf);
        GLTFSkin skin = gltf.getSkins().get(0);
        GLTFMesh gltfMesh = gltf.getMeshes().get(0);
        checkPrimitivePresent(urn, gltfMesh);
        GLTFPrimitive gltfPrimitive = gltfMesh.getPrimitives().get(0);
        List<byte[]> loadedBuffers = loadBinaryBuffers(urn, gltf);
        SkeletalMeshDataBuilder builder = new SkeletalMeshDataBuilder();
        List<Bone> bones = loadBones(gltf, skin, loadedBuffers);
        for (Bone bone : bones) {
            builder.addBone(bone);
        }
        List<Vector3f> positions = loadVector3fList(MeshAttributeSemantic.Position, gltfPrimitive, gltf, loadedBuffers);
        List<Vector3f> normals = loadVector3fList(MeshAttributeSemantic.Normal, gltfPrimitive, gltf, loadedBuffers);
        TIntList joints = readIntBuffer(MeshAttributeSemantic.Joints_0, gltfPrimitive, gltf, loadedBuffers);
        TFloatList weights = readFloatBuffer(MeshAttributeSemantic.Weights_0, gltfPrimitive, gltf, loadedBuffers);
        List<BoneWeight> boneWeights = new ArrayList<>();
        for (int index = 0; index < positions.size(); index++) {
            TIntList weightJoints = new TIntArrayList();
            TFloatList weightBiases = new TFloatArrayList();
            for (int i = 0; i < 4; i++) {
                if (weights.get(4 * index + i) > 0) {
                    weightBiases.add(weights.get(4 * index + i));
                    weightJoints.add(joints.get(4 * index + i));
                }
            }
            boneWeights.add(new BoneWeight(weightBiases, weightJoints));
        }
        builder.addVertices(positions);
        builder.addNormals(normals);
        builder.addWeights(boneWeights);
        builder.setUvs(loadVector2fList(MeshAttributeSemantic.Texcoord_0, gltfPrimitive, gltf, loadedBuffers));
        GLTFAccessor indicesAccessor = getIndicesAccessor(gltfPrimitive, gltf, urn);
        if (indicesAccessor.getBufferView() == null) {
            throw new IOException("Missing buffer view for indices accessor in " + urn);
        }
        GLTFBufferView indicesBuffer = gltf.getBufferViews().get(indicesAccessor.getBufferView());
        checkIndicesBuffer(indicesBuffer);
        TIntList indicies = new TIntArrayList();
        readBuffer(loadedBuffers.get(indicesBuffer.getBuffer()), indicesAccessor, indicesBuffer, indicies);
        builder.setIndices(indicies);
        if (gltf.getSkins().isEmpty()) {
            throw new IOException("Skeletal mesh '" + urn + "' missing skin");
        }
        return builder.build();
    }
}
Also used : InputStreamReader(java.io.InputStreamReader) GLTFMesh(org.terasology.engine.rendering.gltf.model.GLTFMesh) TFloatList(gnu.trove.list.TFloatList) TIntArrayList(gnu.trove.list.array.TIntArrayList) ArrayList(java.util.ArrayList) TFloatArrayList(gnu.trove.list.array.TFloatArrayList) Reader(java.io.Reader) InputStreamReader(java.io.InputStreamReader) IOException(java.io.IOException) TIntArrayList(gnu.trove.list.array.TIntArrayList) TFloatArrayList(gnu.trove.list.array.TFloatArrayList) GLTFSkin(org.terasology.engine.rendering.gltf.model.GLTFSkin) GLTFBufferView(org.terasology.engine.rendering.gltf.model.GLTFBufferView) BoneWeight(org.terasology.engine.rendering.assets.skeletalmesh.BoneWeight) GLTF(org.terasology.engine.rendering.gltf.model.GLTF) SkeletalMeshDataBuilder(org.terasology.engine.rendering.assets.skeletalmesh.SkeletalMeshDataBuilder) Vector3f(org.joml.Vector3f) GLTFPrimitive(org.terasology.engine.rendering.gltf.model.GLTFPrimitive) Bone(org.terasology.engine.rendering.assets.skeletalmesh.Bone) TIntList(gnu.trove.list.TIntList) GLTFAccessor(org.terasology.engine.rendering.gltf.model.GLTFAccessor)

Aggregations

GLTFAccessor (org.terasology.engine.rendering.gltf.model.GLTFAccessor)6 GLTFBufferView (org.terasology.engine.rendering.gltf.model.GLTFBufferView)6 TFloatList (gnu.trove.list.TFloatList)4 TFloatArrayList (gnu.trove.list.array.TFloatArrayList)4 TIntArrayList (gnu.trove.list.array.TIntArrayList)3 IOException (java.io.IOException)3 TIntList (gnu.trove.list.TIntList)2 InputStreamReader (java.io.InputStreamReader)2 Reader (java.io.Reader)2 GLTF (org.terasology.engine.rendering.gltf.model.GLTF)2 GLTFMesh (org.terasology.engine.rendering.gltf.model.GLTFMesh)2 GLTFPrimitive (org.terasology.engine.rendering.gltf.model.GLTFPrimitive)2 ArrayList (java.util.ArrayList)1 Matrix4f (org.joml.Matrix4f)1 Vector3f (org.joml.Vector3f)1 StandardMeshData (org.terasology.engine.rendering.assets.mesh.StandardMeshData)1 Bone (org.terasology.engine.rendering.assets.skeletalmesh.Bone)1 BoneWeight (org.terasology.engine.rendering.assets.skeletalmesh.BoneWeight)1 SkeletalMeshDataBuilder (org.terasology.engine.rendering.assets.skeletalmesh.SkeletalMeshDataBuilder)1 GLTFSkin (org.terasology.engine.rendering.gltf.model.GLTFSkin)1