/*
* Copyright (c) 2009-2012 jMonkeyEngine
* All rights reserved.
*
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* 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
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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package com.jme3.bullet.util;
import com.jme3.bullet.collision.shapes.CollisionShape;
import com.jme3.bullet.collision.shapes.CompoundCollisionShape;
import com.jme3.bullet.collision.shapes.infos.ChildCollisionShape;
import com.jme3.math.Matrix3f;
import com.jme3.scene.Geometry;
import com.jme3.scene.Mesh;
import com.jme3.scene.Node;
import com.jme3.scene.Spatial;
import com.jme3.scene.VertexBuffer.Type;
import com.jme3.util.TempVars;
import java.util.Iterator;
import java.util.List;
/**
*
* @author CJ Hare, normenhansen
*/
public class DebugShapeFactory {
/** The maximum corner for the aabb used for triangles to include in ConcaveShape processing.*/
// private static final Vector3f aabbMax = new Vector3f(1e30f, 1e30f, 1e30f);
/** The minimum corner for the aabb used for triangles to include in ConcaveShape processing.*/
// private static final Vector3f aabbMin = new Vector3f(-1e30f, -1e30f, -1e30f);
/**
* Creates a debug shape from the given collision shape. This is mostly used internally.<br>
* To attach a debug shape to a physics object, call <code>attachDebugShape(AssetManager manager);</code> on it.
* @param collisionShape
* @return
*/
public static Spatial getDebugShape(CollisionShape collisionShape) {
if (collisionShape == null) {
return null;
}
Spatial debugShape;
if (collisionShape instanceof CompoundCollisionShape) {
CompoundCollisionShape shape = (CompoundCollisionShape) collisionShape;
List<ChildCollisionShape> children = shape.getChildren();
Node node = new Node("DebugShapeNode");
for (Iterator<ChildCollisionShape> it = children.iterator(); it.hasNext();) {
ChildCollisionShape childCollisionShape = it.next();
CollisionShape ccollisionShape = childCollisionShape.shape;
Geometry geometry = createDebugShape(ccollisionShape);
// apply translation
geometry.setLocalTranslation(childCollisionShape.location);
// apply rotation
TempVars vars = TempVars.get();
Matrix3f tempRot = vars.tempMat3;
tempRot.set(geometry.getLocalRotation());
childCollisionShape.rotation.mult(tempRot, tempRot);
geometry.setLocalRotation(tempRot);
vars.release();
node.attachChild(geometry);
}
debugShape = node;
} else {
debugShape = createDebugShape(collisionShape);
}
if (debugShape == null) {
return null;
}
debugShape.updateGeometricState();
return debugShape;
}
private static Geometry createDebugShape(CollisionShape shape) {
Geometry geom = new Geometry();
geom.setMesh(DebugShapeFactory.getDebugMesh(shape));
// geom.setLocalScale(shape.getScale());
geom.updateModelBound();
return geom;
}
public static Mesh getDebugMesh(CollisionShape shape) {
Mesh mesh = new Mesh();
mesh = new Mesh();
DebugMeshCallback callback = new DebugMeshCallback();
getVertices(shape.getObjectId(), callback);
mesh.setBuffer(Type.Position, 3, callback.getVertices());
mesh.getFloatBuffer(Type.Position).clear();
return mesh;
}
private static native void getVertices(long shapeId, DebugMeshCallback buffer);
}