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 package com.jme3.bullet.collision.shapes; 33 34 import com.bulletphysics.collision.shapes.IndexedMesh; 35 import com.bulletphysics.collision.shapes.TriangleIndexVertexArray; 36 import com.bulletphysics.extras.gimpact.GImpactMeshShape; 37 import com.jme3.bullet.util.Converter; 38 import com.jme3.export.InputCapsule; 39 import com.jme3.export.JmeExporter; 40 import com.jme3.export.JmeImporter; 41 import com.jme3.export.OutputCapsule; 42 import com.jme3.math.Vector3f; 43 import com.jme3.scene.Mesh; 44 import java.io.IOException; 45 import java.nio.ByteBuffer; 46 47 /** 48 * Basic mesh collision shape 49 * @author normenhansen 50 */ 51 public class GImpactCollisionShape extends CollisionShape{ 52 53 protected Vector3f worldScale; 54 protected int numVertices, numTriangles, vertexStride, triangleIndexStride; 55 protected ByteBuffer triangleIndexBase, vertexBase; 56 protected IndexedMesh bulletMesh; 57 58 public GImpactCollisionShape() { 59 } 60 61 /** 62 * creates a collision shape from the given Mesh 63 * @param mesh the Mesh to use 64 */ 65 public GImpactCollisionShape(Mesh mesh) { 66 createCollisionMesh(mesh, new Vector3f(1,1,1)); 67 } 68 69 70 private void createCollisionMesh(Mesh mesh, Vector3f worldScale) { 71 this.worldScale = worldScale; 72 bulletMesh = Converter.convert(mesh); 73 this.numVertices = bulletMesh.numVertices; 74 this.numTriangles = bulletMesh.numTriangles; 75 this.vertexStride = bulletMesh.vertexStride; 76 this.triangleIndexStride = bulletMesh.triangleIndexStride; 77 this.triangleIndexBase = bulletMesh.triangleIndexBase; 78 this.vertexBase = bulletMesh.vertexBase; 79 createShape(); 80 } 81 82 /** 83 * creates a jme mesh from the collision shape, only needed for debugging 84 */ 85 public Mesh createJmeMesh(){ 86 return Converter.convert(bulletMesh); 87 } 88 89 public void write(JmeExporter ex) throws IOException { 90 super.write(ex); 91 OutputCapsule capsule = ex.getCapsule(this); 92 capsule.write(worldScale, "worldScale", new Vector3f(1, 1, 1)); 93 capsule.write(numVertices, "numVertices", 0); 94 capsule.write(numTriangles, "numTriangles", 0); 95 capsule.write(vertexStride, "vertexStride", 0); 96 capsule.write(triangleIndexStride, "triangleIndexStride", 0); 97 98 capsule.write(triangleIndexBase.array(), "triangleIndexBase", new byte[0]); 99 capsule.write(vertexBase.array(), "vertexBase", new byte[0]); 100 } 101 102 public void read(JmeImporter im) throws IOException { 103 super.read(im); 104 InputCapsule capsule = im.getCapsule(this); 105 worldScale = (Vector3f) capsule.readSavable("worldScale", new Vector3f(1, 1, 1)); 106 numVertices = capsule.readInt("numVertices", 0); 107 numTriangles = capsule.readInt("numTriangles", 0); 108 vertexStride = capsule.readInt("vertexStride", 0); 109 triangleIndexStride = capsule.readInt("triangleIndexStride", 0); 110 111 triangleIndexBase = ByteBuffer.wrap(capsule.readByteArray("triangleIndexBase", new byte[0])); 112 vertexBase = ByteBuffer.wrap(capsule.readByteArray("vertexBase", new byte[0])); 113 createShape(); 114 } 115 116 protected void createShape() { 117 bulletMesh = new IndexedMesh(); 118 bulletMesh.numVertices = numVertices; 119 bulletMesh.numTriangles = numTriangles; 120 bulletMesh.vertexStride = vertexStride; 121 bulletMesh.triangleIndexStride = triangleIndexStride; 122 bulletMesh.triangleIndexBase = triangleIndexBase; 123 bulletMesh.vertexBase = vertexBase; 124 bulletMesh.triangleIndexBase = triangleIndexBase; 125 TriangleIndexVertexArray tiv = new TriangleIndexVertexArray(numTriangles, triangleIndexBase, triangleIndexStride, numVertices, vertexBase, vertexStride); 126 cShape = new GImpactMeshShape(tiv); 127 cShape.setLocalScaling(Converter.convert(worldScale)); 128 ((GImpactMeshShape)cShape).updateBound(); 129 cShape.setLocalScaling(Converter.convert(getScale())); 130 cShape.setMargin(margin); 131 } 132 133 } 134
