engine/src/jbullet/com/jme3/bullet/collision/shapes/CylinderCollisionShape.java

/*
 * 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.
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 * * 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,
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package com.jme3.bullet.collision.shapes;

import com.bulletphysics.collision.shapes.CylinderShape;
import com.bulletphysics.collision.shapes.CylinderShapeX;
import com.bulletphysics.collision.shapes.CylinderShapeZ;
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 java.io.IOException;

/**
 * Basic cylinder collision shape
 * @author normenhansen
 */
public class CylinderCollisionShape extends CollisionShape {

    protected Vector3f halfExtents;
    protected int axis;

    public CylinderCollisionShape() {
    }

    /**
     * creates a cylinder shape from the given halfextents
     * @param halfExtents the halfextents to use
     */
    public CylinderCollisionShape(Vector3f halfExtents) {
        this.halfExtents = halfExtents;
        this.axis = 2;
        createShape();
    }

    /**
     * Creates a cylinder shape around the given axis from the given halfextents
     * @param halfExtents the halfextents to use
     * @param axis (0=X,1=Y,2=Z)
     */
    public CylinderCollisionShape(Vector3f halfExtents, int axis) {
        this.halfExtents = halfExtents;
        this.axis = axis;
        createShape();
    }

    public final Vector3f getHalfExtents() {
        return halfExtents;
    }

    public int getAxis() {
        return axis;
    }

    public void write(JmeExporter ex) throws IOException {
        super.write(ex);
        OutputCapsule capsule = ex.getCapsule(this);
        capsule.write(halfExtents, "halfExtents", new Vector3f(0.5f, 0.5f, 0.5f));
        capsule.write(axis, "axis", 1);
    }

    public void read(JmeImporter im) throws IOException {
        super.read(im);
        InputCapsule capsule = im.getCapsule(this);
        halfExtents = (Vector3f) capsule.readSavable("halfExtents", new Vector3f(0.5f, 0.5f, 0.5f));
        axis = capsule.readInt("axis", 1);
        createShape();
    }

    protected void createShape() {
        switch (axis) {
            case 0:
                cShape = new CylinderShapeX(Converter.convert(halfExtents));
                break;
            case 1:
                cShape = new CylinderShape(Converter.convert(halfExtents));
                break;
            case 2:
                cShape = new CylinderShapeZ(Converter.convert(halfExtents));
                break;
        }
        cShape.setLocalScaling(Converter.convert(getScale()));
        cShape.setMargin(margin);
    }

}