Examples with BoneBuffersData com.jme3.scene.plugins.blender.meshes.MeshBuffers.BoneBuffersData used on opensource projects

Example 1 with BoneBuffersData

use of com.jme3.scene.plugins.blender.meshes.MeshBuffers.BoneBuffersData in project jmonkeyengine by jMonkeyEngine.

the class TemporalMesh method prepareFacesGeometry.

/**
     * The method creates geometries from faces.
     * @param result
     *            the list where new geometries will be appended
     * @param meshHelper
     *            the mesh helper
     */
protected void prepareFacesGeometry(List<Geometry> result, MeshHelper meshHelper) {
    LOGGER.fine("Preparing faces geometries.");
    this.triangulate();
    Vector3f[] tempVerts = new Vector3f[3];
    Vector3f[] tempNormals = new Vector3f[3];
    byte[][] tempVertColors = new byte[3][];
    List<Map<Float, Integer>> boneBuffers = new ArrayList<Map<Float, Integer>>(3);
    LOGGER.log(Level.FINE, "Appending {0} faces to mesh buffers.", faces.size());
    Map<Integer, MeshBuffers> faceMeshes = new HashMap<Integer, MeshBuffers>();
    for (Face face : faces) {
        MeshBuffers meshBuffers = faceMeshes.get(face.getMaterialNumber());
        if (meshBuffers == null) {
            meshBuffers = new MeshBuffers(face.getMaterialNumber());
            faceMeshes.put(face.getMaterialNumber(), meshBuffers);
        }
        List<List<Integer>> triangulatedIndexes = face.getCurrentIndexes();
        List<byte[]> vertexColors = face.getVertexColors();
        for (List<Integer> indexes : triangulatedIndexes) {
            assert indexes.size() == 3 : "The mesh has not been properly triangulated!";
            Vector3f normal = null;
            if (!face.isSmooth()) {
                normal = FastMath.computeNormal(vertices.get(indexes.get(0)), vertices.get(indexes.get(1)), vertices.get(indexes.get(2)));
            }
            boneBuffers.clear();
            for (int i = 0; i < 3; ++i) {
                int vertIndex = indexes.get(i);
                tempVerts[i] = vertices.get(vertIndex);
                tempNormals[i] = normal != null ? normal : normals.get(vertIndex);
                tempVertColors[i] = vertexColors != null ? vertexColors.get(face.getIndexes().indexOf(vertIndex)) : null;
                if (boneIndexes.size() > 0 && vertexGroups.size() > 0) {
                    Map<Float, Integer> boneBuffersForVertex = new HashMap<Float, Integer>();
                    Map<String, Float> vertexGroupsForVertex = vertexGroups.get(vertIndex);
                    for (Entry<String, Integer> entry : boneIndexes.entrySet()) {
                        if (vertexGroupsForVertex.containsKey(entry.getKey())) {
                            float weight = vertexGroupsForVertex.get(entry.getKey());
                            if (weight > MINIMUM_BONE_WEIGHT) {
                                // only values of weight greater than MINIMUM_BONE_WEIGHT are used
                                // if all non zero weights were used, and they were samm enough, problems with normalisation would occur
                                // because adding a very small value to 1.0 will give 1.0
                                // so in order to avoid such errors, which can cause severe animation artifacts we need to use some minimum weight value
                                boneBuffersForVertex.put(weight, entry.getValue());
                            }
                        }
                    }
                    if (boneBuffersForVertex.size() == 0) {
                        // attach the vertex to zero-indexed bone so that it does not collapse to (0, 0, 0)
                        boneBuffersForVertex.put(1.0f, 0);
                    }
                    boneBuffers.add(boneBuffersForVertex);
                }
            }
            Map<String, List<Vector2f>> uvs = meshHelper.selectUVSubset(face, indexes.toArray(new Integer[indexes.size()]));
            meshBuffers.append(face.isSmooth(), tempVerts, tempNormals, uvs, tempVertColors, boneBuffers);
        }
    }
    LOGGER.fine("Converting mesh buffers to geometries.");
    Map<Geometry, MeshBuffers> geometryToBuffersMap = new HashMap<Geometry, MeshBuffers>();
    for (Entry<Integer, MeshBuffers> entry : faceMeshes.entrySet()) {
        MeshBuffers meshBuffers = entry.getValue();
        Mesh mesh = new Mesh();
        if (meshBuffers.isShortIndexBuffer()) {
            mesh.setBuffer(Type.Index, 1, (ShortBuffer) meshBuffers.getIndexBuffer());
        } else {
            mesh.setBuffer(Type.Index, 1, (IntBuffer) meshBuffers.getIndexBuffer());
        }
        mesh.setBuffer(meshBuffers.getPositionsBuffer());
        mesh.setBuffer(meshBuffers.getNormalsBuffer());
        if (meshBuffers.areVertexColorsUsed()) {
            mesh.setBuffer(Type.Color, 4, meshBuffers.getVertexColorsBuffer());
            mesh.getBuffer(Type.Color).setNormalized(true);
        }
        BoneBuffersData boneBuffersData = meshBuffers.getBoneBuffers();
        if (boneBuffersData != null) {
            mesh.setMaxNumWeights(boneBuffersData.maximumWeightsPerVertex);
            mesh.setBuffer(boneBuffersData.verticesWeights);
            mesh.setBuffer(boneBuffersData.verticesWeightsIndices);
            LOGGER.fine("Generating bind pose and normal buffers.");
            mesh.generateBindPose(true);
            // change the usage type of vertex and normal buffers from Static to Stream
            mesh.getBuffer(Type.Position).setUsage(Usage.Stream);
            mesh.getBuffer(Type.Normal).setUsage(Usage.Stream);
            // creating empty buffers for HW skinning; the buffers will be setup if ever used
            VertexBuffer verticesWeightsHW = new VertexBuffer(Type.HWBoneWeight);
            VertexBuffer verticesWeightsIndicesHW = new VertexBuffer(Type.HWBoneIndex);
            mesh.setBuffer(verticesWeightsHW);
            mesh.setBuffer(verticesWeightsIndicesHW);
        }
        Geometry geometry = new Geometry(name + (result.size() + 1), mesh);
        if (properties != null && properties.getValue() != null) {
            meshHelper.applyProperties(geometry, properties);
        }
        result.add(geometry);
        geometryToBuffersMap.put(geometry, meshBuffers);
    }
    LOGGER.fine("Applying materials to geometries.");
    for (Entry<Geometry, MeshBuffers> entry : geometryToBuffersMap.entrySet()) {
        int materialIndex = entry.getValue().getMaterialIndex();
        Geometry geometry = entry.getKey();
        if (materialIndex >= 0 && materials != null && materials.length > materialIndex && materials[materialIndex] != null) {
            materials[materialIndex].applyMaterial(geometry, meshStructure.getOldMemoryAddress(), entry.getValue().getUvCoords(), blenderContext);
        } else {
            Material defaultMaterial = blenderContext.getDefaultMaterial().clone();
            defaultMaterial.getAdditionalRenderState().setFaceCullMode(FaceCullMode.Off);
            geometry.setMaterial(defaultMaterial);
        }
    }
}

Example 2 with BoneBuffersData

use of com.jme3.scene.plugins.blender.meshes.MeshBuffers.BoneBuffersData in project jmonkeyengine by jMonkeyEngine.

the class MeshBuffers method getBoneBuffers.

/**
     * @return bone buffers
     */
public BoneBuffersData getBoneBuffers() {
    BoneBuffersData result = null;
    if (maximumWeightsPerVertex > 0) {
        this.normalizeBoneBuffers(MAXIMUM_WEIGHTS_PER_VERTEX);
        maximumWeightsPerVertex = MAXIMUM_WEIGHTS_PER_VERTEX;
        FloatBuffer weightsFloatData = BufferUtils.createFloatBuffer(boneWeightAndIndexes.size() * MAXIMUM_WEIGHTS_PER_VERTEX);
        ByteBuffer indicesData = BufferUtils.createByteBuffer(boneWeightAndIndexes.size() * MAXIMUM_WEIGHTS_PER_VERTEX);
        int index = 0;
        for (Map<Float, Integer> boneBuffersData : boneWeightAndIndexes) {
            if (boneBuffersData.size() > 0) {
                int count = 0;
                for (Entry<Float, Integer> entry : boneBuffersData.entrySet()) {
                    weightsFloatData.put(index * MAXIMUM_WEIGHTS_PER_VERTEX + count, entry.getKey());
                    indicesData.put(index * MAXIMUM_WEIGHTS_PER_VERTEX + count, entry.getValue().byteValue());
                    ++count;
                }
            } else {
                // if no bone is assigned to this vertex then attach it to the 0-indexed root bone
                weightsFloatData.put(index * MAXIMUM_WEIGHTS_PER_VERTEX, 1.0f);
                indicesData.put(index * MAXIMUM_WEIGHTS_PER_VERTEX, (byte) 0);
            }
            ++index;
        }
        VertexBuffer verticesWeights = new VertexBuffer(Type.BoneWeight);
        verticesWeights.setupData(Usage.CpuOnly, maximumWeightsPerVertex, Format.Float, weightsFloatData);
        VertexBuffer verticesWeightsIndices = new VertexBuffer(Type.BoneIndex);
        verticesWeightsIndices.setupData(Usage.CpuOnly, maximumWeightsPerVertex, Format.UnsignedByte, indicesData);
        result = new BoneBuffersData(maximumWeightsPerVertex, verticesWeights, verticesWeightsIndices);
    }
    return result;
}