1 /* 2 * Copyright (c) 2009-2010 jMonkeyEngine 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: 8 * 9 * * Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 12 * * Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * * Neither the name of 'jMonkeyEngine' nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 24 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 27 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 28 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 29 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 package jme3test.model.anim; 34 35 import com.jme3.animation.Bone; 36 import com.jme3.animation.Skeleton; 37 import com.jme3.animation.SkeletonControl; 38 import com.jme3.app.SimpleApplication; 39 import com.jme3.light.AmbientLight; 40 import com.jme3.light.DirectionalLight; 41 import com.jme3.math.Quaternion; 42 import com.jme3.math.Vector3f; 43 import com.jme3.scene.Geometry; 44 import com.jme3.scene.Node; 45 import com.jme3.scene.VertexBuffer; 46 import com.jme3.scene.VertexBuffer.Format; 47 import com.jme3.scene.VertexBuffer.Type; 48 import com.jme3.scene.VertexBuffer.Usage; 49 import com.jme3.scene.shape.Box; 50 import java.nio.ByteBuffer; 51 import java.nio.FloatBuffer; 52 53 public class TestCustomAnim extends SimpleApplication { 54 55 private Bone bone; 56 private Skeleton skeleton; 57 private Quaternion rotation = new Quaternion(); 58 main(String[] args)59 public static void main(String[] args) { 60 TestCustomAnim app = new TestCustomAnim(); 61 app.start(); 62 } 63 64 @Override simpleInitApp()65 public void simpleInitApp() { 66 67 AmbientLight al = new AmbientLight(); 68 rootNode.addLight(al); 69 70 DirectionalLight dl = new DirectionalLight(); 71 dl.setDirection(Vector3f.UNIT_XYZ.negate()); 72 rootNode.addLight(dl); 73 74 Box box = new Box(1, 1, 1); 75 76 // Setup bone weight buffer 77 FloatBuffer weights = FloatBuffer.allocate( box.getVertexCount() * 4 ); 78 VertexBuffer weightsBuf = new VertexBuffer(Type.BoneWeight); 79 weightsBuf.setupData(Usage.CpuOnly, 4, Format.Float, weights); 80 box.setBuffer(weightsBuf); 81 82 // Setup bone index buffer 83 ByteBuffer indices = ByteBuffer.allocate( box.getVertexCount() * 4 ); 84 VertexBuffer indicesBuf = new VertexBuffer(Type.BoneIndex); 85 indicesBuf.setupData(Usage.CpuOnly, 4, Format.UnsignedByte, indices); 86 box.setBuffer(indicesBuf); 87 88 // Create bind pose buffers 89 box.generateBindPose(true); 90 91 // Create skeleton 92 bone = new Bone("root"); 93 bone.setBindTransforms(Vector3f.ZERO, Quaternion.IDENTITY, Vector3f.UNIT_XYZ); 94 bone.setUserControl(true); 95 skeleton = new Skeleton(new Bone[]{ bone }); 96 97 // Assign all verticies to bone 0 with weight 1 98 for (int i = 0; i < box.getVertexCount() * 4; i += 4){ 99 // assign vertex to bone index 0 100 indices.array()[i+0] = 0; 101 indices.array()[i+1] = 0; 102 indices.array()[i+2] = 0; 103 indices.array()[i+3] = 0; 104 105 // set weight to 1 only for first entry 106 weights.array()[i+0] = 1; 107 weights.array()[i+1] = 0; 108 weights.array()[i+2] = 0; 109 weights.array()[i+3] = 0; 110 } 111 112 // Maximum number of weights per bone is 1 113 box.setMaxNumWeights(1); 114 115 // Create model 116 Geometry geom = new Geometry("box", box); 117 geom.setMaterial(assetManager.loadMaterial("Textures/Terrain/BrickWall/BrickWall.j3m")); 118 Node model = new Node("model"); 119 model.attachChild(geom); 120 121 // Create skeleton control 122 SkeletonControl skeletonControl = new SkeletonControl(skeleton); 123 model.addControl(skeletonControl); 124 125 rootNode.attachChild(model); 126 } 127 128 @Override simpleUpdate(float tpf)129 public void simpleUpdate(float tpf){ 130 // Rotate around X axis 131 Quaternion rotate = new Quaternion(); 132 rotate.fromAngleAxis(tpf, Vector3f.UNIT_X); 133 134 // Combine rotation with previous 135 rotation.multLocal(rotate); 136 137 // Set new rotation into bone 138 bone.setUserTransforms(Vector3f.ZERO, rotation, Vector3f.UNIT_XYZ); 139 140 // After changing skeleton transforms, must update world data 141 skeleton.updateWorldVectors(); 142 } 143 144 } 145