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      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.CylinderShape;
     35 import com.bulletphysics.collision.shapes.CylinderShapeX;
     36 import com.bulletphysics.collision.shapes.CylinderShapeZ;
     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 java.io.IOException;
     44 
     45 /**
     46  * Basic cylinder collision shape
     47  * @author normenhansen
     48  */
     49 public class CylinderCollisionShape extends CollisionShape {
     50 
     51     protected Vector3f halfExtents;
     52     protected int axis;
     53 
     54     public CylinderCollisionShape() {
     55     }
     56 
     57     /**
     58      * creates a cylinder shape from the given halfextents
     59      * @param halfExtents the halfextents to use
     60      */
     61     public CylinderCollisionShape(Vector3f halfExtents) {
     62         this.halfExtents = halfExtents;
     63         this.axis = 2;
     64         createShape();
     65     }
     66 
     67     /**
     68      * Creates a cylinder shape around the given axis from the given halfextents
     69      * @param halfExtents the halfextents to use
     70      * @param axis (0=X,1=Y,2=Z)
     71      */
     72     public CylinderCollisionShape(Vector3f halfExtents, int axis) {
     73         this.halfExtents = halfExtents;
     74         this.axis = axis;
     75         createShape();
     76     }
     77 
     78     public final Vector3f getHalfExtents() {
     79         return halfExtents;
     80     }
     81 
     82     public int getAxis() {
     83         return axis;
     84     }
     85 
     86     public void write(JmeExporter ex) throws IOException {
     87         super.write(ex);
     88         OutputCapsule capsule = ex.getCapsule(this);
     89         capsule.write(halfExtents, "halfExtents", new Vector3f(0.5f, 0.5f, 0.5f));
     90         capsule.write(axis, "axis", 1);
     91     }
     92 
     93     public void read(JmeImporter im) throws IOException {
     94         super.read(im);
     95         InputCapsule capsule = im.getCapsule(this);
     96         halfExtents = (Vector3f) capsule.readSavable("halfExtents", new Vector3f(0.5f, 0.5f, 0.5f));
     97         axis = capsule.readInt("axis", 1);
     98         createShape();
     99     }
    100 
    101     protected void createShape() {
    102         switch (axis) {
    103             case 0:
    104                 cShape = new CylinderShapeX(Converter.convert(halfExtents));
    105                 break;
    106             case 1:
    107                 cShape = new CylinderShape(Converter.convert(halfExtents));
    108                 break;
    109             case 2:
    110                 cShape = new CylinderShapeZ(Converter.convert(halfExtents));
    111                 break;
    112         }
    113         cShape.setLocalScaling(Converter.convert(getScale()));
    114         cShape.setMargin(margin);
    115     }
    116 
    117 }
    118