Home | History | Annotate | Download | only in shapes 
      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.jme3.bullet.util.Converter;
     35 import com.jme3.export.*;
     36 import com.jme3.math.Vector3f;
     37 import java.io.IOException;
     38 
     39 /**
     40  * This Object holds information about a jbullet CollisionShape to be able to reuse
     41  * CollisionShapes (as suggested in bullet manuals)
     42  * TODO: add static methods to create shapes from nodes (like jbullet-jme constructor)
     43  * @author normenhansen
     44  */
     45 public abstract class CollisionShape implements Savable {
     46 
     47     protected com.bulletphysics.collision.shapes.CollisionShape cShape;
     48     protected Vector3f scale = new Vector3f(1, 1, 1);
     49     protected float margin = 0.0f;
     50 
     51     public CollisionShape() {
     52     }
     53 
     54     /**
     55      * used internally, not safe
     56      */
     57     public void calculateLocalInertia(float mass, javax.vecmath.Vector3f vector) {
     58         if (cShape == null) {
     59             return;
     60         }
     61         if (this instanceof MeshCollisionShape) {
     62             vector.set(0, 0, 0);
     63         } else {
     64             cShape.calculateLocalInertia(mass, vector);
     65         }
     66     }
     67 
     68     /**
     69      * used internally
     70      */
     71     public com.bulletphysics.collision.shapes.CollisionShape getCShape() {
     72         return cShape;
     73     }
     74 
     75     /**
     76      * used internally
     77      */
     78     public void setCShape(com.bulletphysics.collision.shapes.CollisionShape cShape) {
     79         this.cShape = cShape;
     80     }
     81 
     82     public void setScale(Vector3f scale) {
     83         this.scale.set(scale);
     84         cShape.setLocalScaling(Converter.convert(scale));
     85     }
     86 
     87     public float getMargin() {
     88         return cShape.getMargin();
     89     }
     90 
     91     public void setMargin(float margin) {
     92         cShape.setMargin(margin);
     93         this.margin = margin;
     94     }
     95 
     96     public Vector3f getScale() {
     97         return scale;
     98     }
     99 
    100     public void write(JmeExporter ex) throws IOException {
    101         OutputCapsule capsule = ex.getCapsule(this);
    102         capsule.write(scale, "scale", new Vector3f(1, 1, 1));
    103         capsule.write(getMargin(), "margin", 0.0f);
    104     }
    105 
    106     public void read(JmeImporter im) throws IOException {
    107         InputCapsule capsule = im.getCapsule(this);
    108         this.scale = (Vector3f) capsule.readSavable("scale", new Vector3f(1, 1, 1));
    109         this.margin = capsule.readFloat("margin", 0.0f);
    110     }
    111 }
    112