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 */
32package com.jme3.bullet.collision.shapes;
33
34import com.jme3.bullet.util.NativeMeshUtil;
35import com.jme3.export.InputCapsule;
36import com.jme3.export.JmeExporter;
37import com.jme3.export.JmeImporter;
38import com.jme3.export.OutputCapsule;
39import com.jme3.scene.Mesh;
40import com.jme3.scene.VertexBuffer.Type;
41import com.jme3.scene.mesh.IndexBuffer;
42import com.jme3.util.BufferUtils;
43import java.io.IOException;
44import java.nio.ByteBuffer;
45import java.nio.FloatBuffer;
46import java.util.logging.Level;
47import java.util.logging.Logger;
48
49/**
50 * Basic mesh collision shape
51 * @author normenhansen
52 */
53public class GImpactCollisionShape extends CollisionShape {
54
55//    protected Vector3f worldScale;
56    protected int numVertices, numTriangles, vertexStride, triangleIndexStride;
57    protected ByteBuffer triangleIndexBase, vertexBase;
58    protected long meshId = 0;
59//    protected IndexedMesh bulletMesh;
60
61    public GImpactCollisionShape() {
62    }
63
64    /**
65     * creates a collision shape from the given Mesh
66     * @param mesh the Mesh to use
67     */
68    public GImpactCollisionShape(Mesh mesh) {
69        createCollisionMesh(mesh);
70    }
71
72    private void createCollisionMesh(Mesh mesh) {
73        triangleIndexBase = BufferUtils.createByteBuffer(mesh.getTriangleCount() * 3 * 4);
74        vertexBase = BufferUtils.createByteBuffer(mesh.getVertexCount() * 3 * 4);
75//        triangleIndexBase = ByteBuffer.allocate(mesh.getTriangleCount() * 3 * 4);
76//        vertexBase = ByteBuffer.allocate(mesh.getVertexCount() * 3 * 4);
77        numVertices = mesh.getVertexCount();
78        vertexStride = 12; //3 verts * 4 bytes per.
79        numTriangles = mesh.getTriangleCount();
80        triangleIndexStride = 12; //3 index entries * 4 bytes each.
81
82        IndexBuffer indices = mesh.getIndexBuffer();
83        FloatBuffer vertices = mesh.getFloatBuffer(Type.Position);
84        vertices.rewind();
85
86        int verticesLength = mesh.getVertexCount() * 3;
87        for (int i = 0; i < verticesLength; i++) {
88            float tempFloat = vertices.get();
89            vertexBase.putFloat(tempFloat);
90        }
91
92        int indicesLength = mesh.getTriangleCount() * 3;
93        for (int i = 0; i < indicesLength; i++) {
94            triangleIndexBase.putInt(indices.get(i));
95        }
96        vertices.rewind();
97        vertices.clear();
98
99        createShape();
100    }
101
102//    /**
103//     * creates a jme mesh from the collision shape, only needed for debugging
104//     */
105//    public Mesh createJmeMesh() {
106//        return Converter.convert(bulletMesh);
107//    }
108    public void write(JmeExporter ex) throws IOException {
109        super.write(ex);
110        OutputCapsule capsule = ex.getCapsule(this);
111//        capsule.write(worldScale, "worldScale", new Vector3f(1, 1, 1));
112        capsule.write(numVertices, "numVertices", 0);
113        capsule.write(numTriangles, "numTriangles", 0);
114        capsule.write(vertexStride, "vertexStride", 0);
115        capsule.write(triangleIndexStride, "triangleIndexStride", 0);
116
117        capsule.write(triangleIndexBase.array(), "triangleIndexBase", new byte[0]);
118        capsule.write(vertexBase.array(), "vertexBase", new byte[0]);
119    }
120
121    public void read(JmeImporter im) throws IOException {
122        super.read(im);
123        InputCapsule capsule = im.getCapsule(this);
124//        worldScale = (Vector3f) capsule.readSavable("worldScale", new Vector3f(1, 1, 1));
125        numVertices = capsule.readInt("numVertices", 0);
126        numTriangles = capsule.readInt("numTriangles", 0);
127        vertexStride = capsule.readInt("vertexStride", 0);
128        triangleIndexStride = capsule.readInt("triangleIndexStride", 0);
129
130        triangleIndexBase = ByteBuffer.wrap(capsule.readByteArray("triangleIndexBase", new byte[0]));
131        vertexBase = ByteBuffer.wrap(capsule.readByteArray("vertexBase", new byte[0]));
132        createShape();
133    }
134
135    protected void createShape() {
136//        bulletMesh = new IndexedMesh();
137//        bulletMesh.numVertices = numVertices;
138//        bulletMesh.numTriangles = numTriangles;
139//        bulletMesh.vertexStride = vertexStride;
140//        bulletMesh.triangleIndexStride = triangleIndexStride;
141//        bulletMesh.triangleIndexBase = triangleIndexBase;
142//        bulletMesh.vertexBase = vertexBase;
143//        bulletMesh.triangleIndexBase = triangleIndexBase;
144//        TriangleIndexVertexArray tiv = new TriangleIndexVertexArray(numTriangles, triangleIndexBase, triangleIndexStride, numVertices, vertexBase, vertexStride);
145//        objectId = new GImpactMeshShape(tiv);
146//        objectId.setLocalScaling(Converter.convert(worldScale));
147//        ((GImpactMeshShape)objectId).updateBound();
148//        objectId.setLocalScaling(Converter.convert(getScale()));
149//        objectId.setMargin(margin);
150        meshId = NativeMeshUtil.createTriangleIndexVertexArray(triangleIndexBase, vertexBase, numTriangles, numVertices, vertexStride, triangleIndexStride);
151        Logger.getLogger(this.getClass().getName()).log(Level.INFO, "Created Mesh {0}", Long.toHexString(meshId));
152        objectId = createShape(meshId);
153        Logger.getLogger(this.getClass().getName()).log(Level.INFO, "Created Shape {0}", Long.toHexString(objectId));
154        setScale(scale);
155        setMargin(margin);
156    }
157
158    private native long createShape(long meshId);
159
160    @Override
161    protected void finalize() throws Throwable {
162        super.finalize();
163        Logger.getLogger(this.getClass().getName()).log(Level.INFO, "Finalizing Mesh {0}", Long.toHexString(meshId));
164        finalizeNative(meshId);
165    }
166
167    private native void finalizeNative(long objectId);
168}
169