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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 
     33 package com.jme3.scene.debug;
     34 
     35 import com.jme3.math.Vector3f;
     36 import com.jme3.scene.Mesh;
     37 import com.jme3.scene.VertexBuffer;
     38 import com.jme3.scene.VertexBuffer.Type;
     39 import com.jme3.util.BufferUtils;
     40 import java.nio.FloatBuffer;
     41 
     42 public class WireFrustum extends Mesh {
     43 
     44     public WireFrustum(Vector3f[] points){
     45         if (points != null)
     46             setBuffer(Type.Position, 3, BufferUtils.createFloatBuffer(points));
     47 
     48         setBuffer(Type.Index, 2,
     49                 new short[]{
     50                      0, 1,
     51                      1, 2,
     52                      2, 3,
     53                      3, 0,
     54 
     55                      4, 5,
     56                      5, 6,
     57                      6, 7,
     58                      7, 4,
     59 
     60                      0, 4,
     61                      1, 5,
     62                      2, 6,
     63                      3, 7,
     64                 }
     65         );
     66         setMode(Mode.Lines);
     67     }
     68 
     69     public void update(Vector3f[] points){
     70         VertexBuffer vb = getBuffer(Type.Position);
     71         if (vb == null){
     72             setBuffer(Type.Position, 3, BufferUtils.createFloatBuffer(points));
     73             return;
     74         }
     75 
     76         FloatBuffer b = BufferUtils.createFloatBuffer(points);
     77         FloatBuffer a = (FloatBuffer) vb.getData();
     78         b.rewind();
     79         a.rewind();
     80         a.put(b);
     81         a.rewind();
     82 
     83         vb.updateData(a);
     84 
     85         updateBound();
     86     }
     87 
     88 }
     89