Package com.jme3.scene.debug

Source Code of com.jme3.scene.debug.WireFrustum

/*
* Copyright (c) 2009-2012 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.scene.debug;

import com.jme3.math.Vector3f;
import com.jme3.scene.Mesh;
import com.jme3.scene.VertexBuffer;
import com.jme3.scene.VertexBuffer.Type;
import com.jme3.util.BufferUtils;
import java.nio.FloatBuffer;

public class WireFrustum extends Mesh {

    public WireFrustum(Vector3f[] points){
        if (points != null)
            setBuffer(Type.Position, 3, BufferUtils.createFloatBuffer(points));

        setBuffer(Type.Index, 2,
                new short[]{
                     0, 1,
                     1, 2,
                     2, 3,
                     3, 0,

                     4, 5,
                     5, 6,
                     6, 7,
                     7, 4,

                     0, 4,
                     1, 5,
                     2, 6,
                     3, 7,
                }
        );
        setMode(Mode.Lines);
    }

    public void update(Vector3f[] points){
        VertexBuffer vb = getBuffer(Type.Position);
        if (vb == null){
            setBuffer(Type.Position, 3, BufferUtils.createFloatBuffer(points));
            return;
        }

        FloatBuffer b = BufferUtils.createFloatBuffer(points);
        FloatBuffer a = (FloatBuffer) vb.getData();
        b.rewind();
        a.rewind();
        a.put(b);
        a.rewind();

        vb.updateData(a);
       
        updateBound();
    }

}
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