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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.bounding.BoundingBox;
     36 import com.jme3.scene.Mesh;
     37 import com.jme3.scene.VertexBuffer;
     38 import com.jme3.scene.VertexBuffer.Format;
     39 import com.jme3.scene.VertexBuffer.Type;
     40 import com.jme3.scene.VertexBuffer.Usage;
     41 import com.jme3.util.BufferUtils;
     42 import java.nio.FloatBuffer;
     43 
     44 public class WireBox extends Mesh {
     45 
     46     public WireBox(){
     47         this(1,1,1);
     48     }
     49 
     50     public WireBox(float xExt, float yExt, float zExt){
     51         updatePositions(xExt,yExt,zExt);
     52         setBuffer(Type.Index, 2,
     53                 new short[]{
     54                      0, 1,
     55                      1, 2,
     56                      2, 3,
     57                      3, 0,
     58 
     59                      4, 5,
     60                      5, 6,
     61                      6, 7,
     62                      7, 4,
     63 
     64                      0, 4,
     65                      1, 5,
     66                      2, 6,
     67                      3, 7,
     68                 }
     69         );
     70         setMode(Mode.Lines);
     71 
     72         updateCounts();
     73     }
     74 
     75     public void updatePositions(float xExt, float yExt, float zExt){
     76         VertexBuffer pvb = getBuffer(Type.Position);
     77         FloatBuffer pb;
     78         if (pvb == null){
     79             pvb = new VertexBuffer(Type.Position);
     80             pb = BufferUtils.createVector3Buffer(8);
     81             pvb.setupData(Usage.Dynamic, 3, Format.Float, pb);
     82             setBuffer(pvb);
     83         }else{
     84             pb = (FloatBuffer) pvb.getData();
     85             pvb.updateData(pb);
     86         }
     87         pb.rewind();
     88         pb.put(
     89             new float[]{
     90                 -xExt, -yExt,  zExt,
     91                  xExt, -yExt,  zExt,
     92                  xExt,  yExt,  zExt,
     93                 -xExt,  yExt,  zExt,
     94 
     95                 -xExt, -yExt, -zExt,
     96                  xExt, -yExt, -zExt,
     97                  xExt,  yExt, -zExt,
     98                 -xExt,  yExt, -zExt,
     99             }
    100         );
    101         updateBound();
    102     }
    103 
    104     public void fromBoundingBox(BoundingBox bbox){
    105         updatePositions(bbox.getXExtent(), bbox.getYExtent(), bbox.getZExtent());
    106     }
    107 
    108 }
    109