List of usage examples for com.badlogic.gdx.graphics.g3d.model.skeleton SkeletonSubMesh SkeletonSubMesh
public SkeletonSubMesh(String name, Mesh mesh, int primitiveType)
From source file:com.xoppa.android.loaders.model.g3d.G3dxLoader.java
License:Apache License
public static SkeletonModel loadSkeletonModel(FileHandle handle) { Chunk root = null;/*from w w w . j a v a2 s. c o m*/ InputStream in = null; try { in = handle.read(); root = ChunkReader.readChunks(in); // check root tag if (root.getId() != G3dConstants.G3D_ROOT) throw new GdxRuntimeException("Invalid root tag id: " + root.getId()); // check version Chunk version = root.getChild(G3dConstants.VERSION_INFO); if (version == null) throw new GdxRuntimeException("No version chunk found"); int major = version.readByte(); int minor = version.readByte(); if (major != 0 || minor != 1) throw new GdxRuntimeException("Invalid version, required 0.1, got " + major + "." + minor); // read skeleton model Chunk skeletonModel = root.getChild(G3dConstants.SKELETON_MODEL); if (skeletonModel == null) throw new GdxRuntimeException("No skeletonModel chunk found"); int numSubMeshes = skeletonModel.readInt(); // read submeshes SkeletonSubMesh[] meshes = new SkeletonSubMesh[numSubMeshes]; Chunk[] meshChunks = skeletonModel.getChildren(G3dConstants.SKELETON_SUBMESH); if (meshChunks.length != numSubMeshes) throw new GdxRuntimeException( "Number of submeshes not equal to number specified in still model chunk, expected " + numSubMeshes + ", got " + meshChunks.length); for (int i = 0; i < numSubMeshes; i++) { Chunk subMeshChunk = meshChunks[i]; // read attributes Chunk attributes = subMeshChunk.getChild(G3dConstants.VERTEX_ATTRIBUTES); if (attributes == null) throw new GdxRuntimeException("No vertex attribute chunk given"); int numAttributes = attributes.readInt(); Chunk[] attributeChunks = attributes.getChildren(G3dConstants.VERTEX_ATTRIBUTE); if (attributeChunks.length != numAttributes) new GdxRuntimeException( "Number of attributes not equal to number specified in attributes chunk, expected " + numAttributes + ", got " + attributeChunks.length); VertexAttribute[] vertAttribs = new VertexAttribute[numAttributes]; for (int j = 0; j < numAttributes; j++) { vertAttribs[j] = new VertexAttribute(attributeChunks[j].readInt(), attributeChunks[j].readInt(), attributeChunks[j].readString()); } // read static components, sort of like a bind pose mesh Chunk vertices = subMeshChunk.getChild(G3dConstants.VERTEX_LIST); int numVertices = vertices.readInt(); float[] meshVertices = vertices.readFloats(); // read indices Chunk indices = subMeshChunk.getChild(G3dConstants.INDEX_LIST); int numIndices = indices.readInt(); short[] meshIndices = indices.readShorts(); //read bone weight Chunk boneWeights = subMeshChunk.getChild(G3dConstants.BONE_WEIGHTS); int numBonesWeights = boneWeights.readInt(); Chunk[] boneWeightChunks = boneWeights.getChildren(G3dConstants.BONE_WEIGHT); if (attributeChunks.length != numAttributes) new GdxRuntimeException( "Number of bone weights not equal to number specified in bone weights chunk, expected " + numBonesWeights + ", got " + boneWeightChunks.length); float[][] meshBoneWeights = new float[numBonesWeights][]; for (int j = 0; j < numBonesWeights; j++) { int count = boneWeightChunks[j].readInt(); meshBoneWeights[j] = boneWeightChunks[j].readFloats(); } //read bone assignment Chunk boneAssignments = subMeshChunk.getChild(G3dConstants.BONE_ASSIGNMENTS); int numBoneAssignments = boneAssignments.readInt(); Chunk[] boneAssignmentChunks = boneAssignments.getChildren(G3dConstants.BONE_ASSIGNMENT); if (boneAssignmentChunks.length != numBoneAssignments) new GdxRuntimeException( "Number of bone assignment not equal to number specified in bone assignment chunk, expected " + numBoneAssignments + ", got " + boneAssignmentChunks.length); int[][] meshBoneAssignments = new int[numBoneAssignments][]; for (int j = 0; j < numBoneAssignments; j++) { int count = boneAssignmentChunks[j].readInt(); meshBoneAssignments[j] = boneAssignmentChunks[j].readInts(); } SkeletonSubMesh subMesh = new SkeletonSubMesh(subMeshChunk.readString(), new Mesh(false, numVertices, numIndices, vertAttribs), subMeshChunk.readInt()); subMesh.indices = meshIndices; subMesh.boneAssignments = meshBoneAssignments; subMesh.boneWeights = meshBoneWeights; subMesh.vertices = meshVertices; subMesh.mesh.setVertices(subMesh.vertices); subMesh.mesh.setIndices(subMesh.indices); subMesh.skinnedVertices = new float[subMesh.vertices.length]; System.arraycopy(subMesh.vertices, 0, subMesh.skinnedVertices, 0, subMesh.vertices.length); meshes[i] = subMesh; } //read Skeleton hierarchy Skeleton skeleton = new Skeleton(); Chunk skeletonChunk = skeletonModel.getChild(G3dConstants.SKELETON); { // read Skeleton hierarchy Chunk hierarchy = skeletonChunk.getChild(G3dConstants.SKELETON_HIERARCHY); int numHierarchyJoints = hierarchy.readInt(); for (int i = 0; i < numHierarchyJoints; i++) { skeleton.hierarchy.add(readSkeletonJoint(hierarchy)); } // read Skeleton animations Chunk animations = skeletonChunk.getChild(G3dConstants.SKELETON_ANIMATIONS); int numAnimations = animations.readInt(); Chunk[] animationChunks = animations.getChildren(G3dConstants.SKELETON_ANIMATION); if (animationChunks.length != numAnimations) new GdxRuntimeException( "Number of animations not equal to number specified in animations chunk, expected " + numAnimations + ", got " + animationChunks.length); for (int i = 0; i < numAnimations; i++) { Chunk animation = animationChunks[i]; String name = animation.readString(); float totalDuration = animation.readFloat(); int numJoints = animation.readInt(); SkeletonKeyframe perJointKeyFrames[][] = new SkeletonKeyframe[numJoints][]; for (int j = 0; j < numJoints; j++) { int numFrames = animation.readInt(); perJointKeyFrames[j] = new SkeletonKeyframe[numFrames]; for (int k = 0; k < numFrames; k++) { SkeletonKeyframe frame = new SkeletonKeyframe(); frame.timeStamp = animation.readFloat(); frame.parentIndex = animation.readInt(); frame.position.x = animation.readFloat(); frame.position.y = animation.readFloat(); frame.position.z = animation.readFloat(); frame.rotation.w = animation.readFloat(); frame.rotation.x = animation.readFloat(); frame.rotation.y = animation.readFloat(); frame.rotation.z = animation.readFloat(); frame.scale.x = animation.readFloat(); frame.scale.y = animation.readFloat(); frame.scale.z = animation.readFloat(); perJointKeyFrames[j][k] = frame; } } skeleton.animations.put(name, new SkeletonAnimation(name, totalDuration, perJointKeyFrames)); } } skeleton.buildFromHierarchy(); SkeletonModel model = new SkeletonModel(skeleton, meshes); model.setMaterial(new Material("default")); return model; } catch (IOException e) { throw new GdxRuntimeException( "Couldn't load skeleton model from '" + handle.name() + "', " + e.getMessage(), e); } finally { if (in != null) try { in.close(); } catch (IOException e) { } } }