Examples with FbxCluster com.jme3.scene.plugins.fbx.anim.FbxCluster used on opensource projects

Example 1 with FbxCluster

use of com.jme3.scene.plugins.fbx.anim.FbxCluster in project jmonkeyengine by jMonkeyEngine.

the class SceneLoader method loadDeformer.

private FbxObject loadDeformer(FbxElement element) {
    String type = (String) element.properties.get(2);
    switch(type) {
        case "Skin":
            FbxSkin skinData = new FbxSkin(this, element);
            skinMap.put(skinData.id, skinData);
            return skinData;
        case "Cluster":
            FbxCluster clusterData = new FbxCluster(this, element);
            return clusterData;
    }
    return null;
}

Example 2 with FbxCluster

use of com.jme3.scene.plugins.fbx.anim.FbxCluster in project jmonkeyengine by jMonkeyEngine.

the class FbxMesh method applyCluster.

public void applyCluster(FbxCluster cluster) {
    if (boneIndices == null) {
        boneIndices = new ArrayList[positions.length];
        boneWeights = new ArrayList[positions.length];
    }
    FbxLimbNode limb = cluster.getLimb();
    Bone bone = limb.getJmeBone();
    Skeleton skeleton = limb.getSkeletonHolder().getJmeSkeleton();
    int boneIndex = skeleton.getBoneIndex(bone);
    int[] positionIndices = cluster.getVertexIndices();
    double[] weights = cluster.getWeights();
    for (int i = 0; i < positionIndices.length; i++) {
        int positionIndex = positionIndices[i];
        float boneWeight = (float) weights[i];
        ArrayList<Integer> boneIndicesForVertex = boneIndices[positionIndex];
        ArrayList<Float> boneWeightsForVertex = boneWeights[positionIndex];
        if (boneIndicesForVertex == null) {
            boneIndicesForVertex = new ArrayList<Integer>();
            boneWeightsForVertex = new ArrayList<Float>();
            boneIndices[positionIndex] = boneIndicesForVertex;
            boneWeights[positionIndex] = boneWeightsForVertex;
        }
        boneIndicesForVertex.add(boneIndex);
        boneWeightsForVertex.add(boneWeight);
    }
}

Example 3 with FbxCluster

use of com.jme3.scene.plugins.fbx.anim.FbxCluster in project jmonkeyengine by jMonkeyEngine.

the class FbxMesh method toJmeObject.

@Override
protected IntMap<Mesh> toJmeObject() {
    // Load clusters from SkinDeformer
    if (skinDeformer != null) {
        for (FbxCluster cluster : skinDeformer.getJmeObject()) {
            applyCluster(cluster);
        }
    }
    IrMesh irMesh = toIRMesh();
    // Trim bone weights to 4 weights per vertex.
    IrUtils.trimBoneWeights(irMesh);
    // Convert tangents / binormals to tangents with parity.
    IrUtils.toTangentsWithParity(irMesh);
    // Triangulate quads.
    IrUtils.triangulate(irMesh);
    // Split meshes by material indices.
    IntMap<IrMesh> irMeshes = IrUtils.splitByMaterial(irMesh);
    // Create a jME3 Mesh for each material index.
    IntMap<Mesh> jmeMeshes = new IntMap<Mesh>();
    for (IntMap.Entry<IrMesh> irMeshEntry : irMeshes) {
        Mesh jmeMesh = IrUtils.convertIrMeshToJmeMesh(irMeshEntry.getValue());
        jmeMeshes.put(irMeshEntry.getKey(), jmeMesh);
    }
    if (jmeMeshes.size() == 0) {
        // When will this actually happen? Not sure.
        logger.log(Level.WARNING, "Empty FBX mesh found (unusual).");
    }
    // It makes sense only if the mesh uses a single material!
    if (jmeMeshes.containsKey(-1) && jmeMeshes.size() > 1) {
        logger.log(Level.WARNING, "Mesh has polygons with no material " + "indices (unusual) - they will use material index 0.");
    }
    return jmeMeshes;
}

Example 4 with FbxCluster

use of com.jme3.scene.plugins.fbx.anim.FbxCluster in project jmonkeyengine by jMonkeyEngine.

the class FbxNode method getPreferredParent.

/**
     * If this geometry node is deformed by a skeleton, this
     * returns the node containing the skeleton.
     * 
     * In jME3, a mesh can be deformed by a skeleton only if it is 
     * a child of the node containing the skeleton. However, this
     * is not a requirement in FBX, so we have to modify the scene graph
     * of the loaded model to adjust for this.
     * This happens automatically in 
     * {@link #createScene(com.jme3.scene.plugins.fbx.node.FbxNode)}.
     * 
     * @return The model this node would like to be a child of, or null
     * if no preferred parent.
     */
public FbxNode getPreferredParent() {
    if (!(nodeAttribute instanceof FbxMesh)) {
        return null;
    }
    FbxMesh fbxMesh = (FbxMesh) nodeAttribute;
    FbxSkinDeformer deformer = fbxMesh.getSkinDeformer();
    FbxNode preferredParent = null;
    if (deformer != null) {
        for (FbxCluster cluster : deformer.getJmeObject()) {
            FbxLimbNode limb = cluster.getLimb();
            if (preferredParent == null) {
                preferredParent = limb.getSkeletonHolder();
            } else if (preferredParent != limb.getSkeletonHolder()) {
                logger.log(Level.WARNING, "A mesh is being deformed by multiple skeletons. " + "Only one skeleton will work, ignoring other skeletons.");
            }
        }
    }
    return preferredParent;
}

Example 5 with FbxCluster

use of com.jme3.scene.plugins.fbx.anim.FbxCluster in project jmonkeyengine by jMonkeyEngine.

the class FbxSkin method generateBoneData.

private int generateBoneData(Mesh mesh, FbxMesh fbxMesh) {
    // Create bone buffers
    FloatBuffer boneWeightData = BufferUtils.createFloatBuffer(fbxMesh.vCount * 4);
    ByteBuffer boneIndicesData = BufferUtils.createByteBuffer(fbxMesh.vCount * 4);
    mesh.setBuffer(VertexBuffer.Type.BoneWeight, 4, boneWeightData);
    mesh.setBuffer(VertexBuffer.Type.BoneIndex, 4, boneIndicesData);
    mesh.getBuffer(VertexBuffer.Type.BoneWeight).setUsage(Usage.CpuOnly);
    mesh.getBuffer(VertexBuffer.Type.BoneIndex).setUsage(Usage.CpuOnly);
    VertexBuffer weightsHW = new VertexBuffer(Type.HWBoneWeight);
    VertexBuffer indicesHW = new VertexBuffer(Type.HWBoneIndex);
    // Setting usage to CpuOnly so that the buffer is not send empty to the GPU
    indicesHW.setUsage(Usage.CpuOnly);
    weightsHW.setUsage(Usage.CpuOnly);
    mesh.setBuffer(weightsHW);
    mesh.setBuffer(indicesHW);
    int bonesLimitExceeded = 0;
    // Accumulate skin bones influence into mesh buffers
    for (FbxNode limb : bones) {
        FbxCluster cluster = limb.skinToCluster.get(id);
        if (cluster == null || cluster.indexes == null || cluster.weights == null || cluster.indexes.length != cluster.weights.length)
            continue;
        if (limb.boneIndex > 255)
            throw new AssetLoadException("Bone index can't be packed into byte");
        for (int i = 0; i < cluster.indexes.length; ++i) {
            int vertexIndex = cluster.indexes[i];
            if (vertexIndex >= fbxMesh.reverseVertexMap.size())
                throw new AssetLoadException("Invalid skinning vertex index. Unexpected index lookup " + vertexIndex + " from " + fbxMesh.reverseVertexMap.size());
            List<Integer> dstVertices = fbxMesh.reverseVertexMap.get(vertexIndex);
            for (int j = 0; j < dstVertices.size(); ++j) {
                int v = dstVertices.get(j);
                // Append bone index and weight to vertex
                int offset;
                int smalestOffset = 0;
                float w = 0;
                float smalestW = Float.MAX_VALUE;
                for (offset = v * 4; offset < v * 4 + 4; ++offset) {
                    w = boneWeightData.get(offset);
                    if (w == 0)
                        break;
                    if (w < smalestW) {
                        smalestW = w;
                        smalestOffset = offset;
                    }
                }
                if (w == 0) {
                    boneWeightData.put(offset, (float) cluster.weights[i]);
                    boneIndicesData.put(offset, (byte) limb.boneIndex);
                } else {
                    if ((float) cluster.weights[i] > smalestW) {
                        // If current weight more than smallest, discard smallest
                        boneWeightData.put(smalestOffset, (float) cluster.weights[i]);
                        boneIndicesData.put(smalestOffset, (byte) limb.boneIndex);
                    }
                    bonesLimitExceeded++;
                }
            }
        }
    }
    if (bonesLimitExceeded > 0)
        scene.warning("Skinning support max 4 bone per vertex. Exceeding data of " + bonesLimitExceeded + " weights in mesh bones will be discarded");
    // Postprocess bones weights
    int maxWeightsPerVert = 0;
    boneWeightData.rewind();
    for (int v = 0; v < fbxMesh.vCount; v++) {
        float w0 = boneWeightData.get();
        float w1 = boneWeightData.get();
        float w2 = boneWeightData.get();
        float w3 = boneWeightData.get();
        if (w3 != 0) {
            maxWeightsPerVert = Math.max(maxWeightsPerVert, 4);
        } else if (w2 != 0) {
            maxWeightsPerVert = Math.max(maxWeightsPerVert, 3);
        } else if (w1 != 0) {
            maxWeightsPerVert = Math.max(maxWeightsPerVert, 2);
        } else if (w0 != 0) {
            maxWeightsPerVert = Math.max(maxWeightsPerVert, 1);
        }
        float sum = w0 + w1 + w2 + w3;
        if (sum != 1f) {
            // normalize weights
            float mult = (sum != 0) ? (1f / sum) : 0;
            boneWeightData.position(v * 4);
            boneWeightData.put(w0 * mult);
            boneWeightData.put(w1 * mult);
            boneWeightData.put(w2 * mult);
            boneWeightData.put(w3 * mult);
        }
    }
    return maxWeightsPerVert;
}