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/*
* Copyright (c) 2009-2010 jMonkeyEngine
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of 'jMonkeyEngine' nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.jme3.bullet.collision.shapes;
import com.bulletphysics.collision.shapes.BvhTriangleMeshShape;
import com.bulletphysics.collision.shapes.IndexedMesh;
import com.bulletphysics.collision.shapes.TriangleIndexVertexArray;
import com.jme3.bullet.util.Converter;
import com.jme3.export.InputCapsule;
import com.jme3.export.JmeExporter;
import com.jme3.export.JmeImporter;
import com.jme3.export.OutputCapsule;
import com.jme3.math.Vector3f;
import com.jme3.scene.Mesh;
import java.io.IOException;
import java.nio.ByteBuffer;
/**
* Basic mesh collision shape
* @author normenhansen
*/
public class MeshCollisionShape extends CollisionShape {
protected int numVertices, numTriangles, vertexStride, triangleIndexStride;
protected ByteBuffer triangleIndexBase, vertexBase;
protected IndexedMesh bulletMesh;
public MeshCollisionShape() {
}
/**
* creates a collision shape from the given TriMesh
* @param mesh the TriMesh to use
*/
public MeshCollisionShape(Mesh mesh) {
createCollisionMesh(mesh, new Vector3f(1, 1, 1));
}
private void createCollisionMesh(Mesh mesh, Vector3f worldScale) {
this.scale = worldScale;
bulletMesh = Converter.convert(mesh);
this.numVertices = bulletMesh.numVertices;
this.numTriangles = bulletMesh.numTriangles;
this.vertexStride = bulletMesh.vertexStride;
this.triangleIndexStride = bulletMesh.triangleIndexStride;
this.triangleIndexBase = bulletMesh.triangleIndexBase;
this.vertexBase = bulletMesh.vertexBase;
createShape();
}
/**
* creates a jme mesh from the collision shape, only needed for debugging
*/
public Mesh createJmeMesh(){
return Converter.convert(bulletMesh);
}
public void write(JmeExporter ex) throws IOException {
super.write(ex);
OutputCapsule capsule = ex.getCapsule(this);
capsule.write(numVertices, "numVertices", 0);
capsule.write(numTriangles, "numTriangles", 0);
capsule.write(vertexStride, "vertexStride", 0);
capsule.write(triangleIndexStride, "triangleIndexStride", 0);
capsule.write(triangleIndexBase.array(), "triangleIndexBase", new byte[0]);
capsule.write(vertexBase.array(), "vertexBase", new byte[0]);
}
public void read(JmeImporter im) throws IOException {
super.read(im);
InputCapsule capsule = im.getCapsule(this);
numVertices = capsule.readInt("numVertices", 0);
numTriangles = capsule.readInt("numTriangles", 0);
vertexStride = capsule.readInt("vertexStride", 0);
triangleIndexStride = capsule.readInt("triangleIndexStride", 0);
triangleIndexBase = ByteBuffer.wrap(capsule.readByteArray("triangleIndexBase", new byte[0]));
vertexBase = ByteBuffer.wrap(capsule.readByteArray("vertexBase", new byte[0]));
createShape();
}
protected void createShape() {
bulletMesh = new IndexedMesh();
bulletMesh.numVertices = numVertices;
bulletMesh.numTriangles = numTriangles;
bulletMesh.vertexStride = vertexStride;
bulletMesh.triangleIndexStride = triangleIndexStride;
bulletMesh.triangleIndexBase = triangleIndexBase;
bulletMesh.vertexBase = vertexBase;
bulletMesh.triangleIndexBase = triangleIndexBase;
TriangleIndexVertexArray tiv = new TriangleIndexVertexArray(numTriangles, triangleIndexBase, triangleIndexStride, numVertices, vertexBase, vertexStride);
cShape = new BvhTriangleMeshShape(tiv, true);
cShape.setLocalScaling(Converter.convert(getScale()));
cShape.setMargin(margin);
}
}
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