dev/org.simantics.proconf.g3d/src/org/simantics/proconf/g3d/shapes/Quad.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007 VTT Technical Research Centre of Finland and others.\r
   3  * All rights reserved. This program and the accompanying materials\r
   4  * are made available under the terms of the Eclipse Public License v1.0\r
   5  * which accompanies this distribution, and is available at\r
   6  * http://www.eclipse.org/legal/epl-v10.html\r
   7  *\r
   8  * Contributors:\r
   9  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  10  *******************************************************************************/\r
  11 package org.simantics.proconf.g3d.shapes;\r
  12 \r
  13 import java.nio.FloatBuffer;\r
  14 \r
  15 import com.jme.math.Vector3f;\r
  16 import com.jme.renderer.ColorRGBA;\r
  17 import com.jme.scene.TriMesh;\r
  18 import com.jme.scene.batch.TriangleBatch;\r
  19 import com.jme.util.geom.BufferUtils;\r
  20 \r
  21 public class Quad extends TriMesh {\r
  22 \r
  23         private static final long serialVersionUID = 1L;\r
  24 \r
  25     public Quad() {\r
  26         \r
  27     }\r
  28     \r
  29         /**\r
  30          * Constructor creates a new <code>Quad</code> object. That data for the\r
  31          * <code>Quad</code> is not set until a call to <code>initialize</code>\r
  32          * is made.\r
  33          * \r
  34          * @param name\r
  35          *            the name of this <code>Quad</code>.\r
  36          */\r
  37         public Quad(String name) {\r
  38                 super(name);\r
  39         }\r
  40 \r
  41         /**\r
  42          * Constructor creates a new <code>Quade</code> object with the provided\r
  43          * width and height.\r
  44          * \r
  45          * @param name\r
  46          *            the name of the <code>Quad</code>.\r
  47          * @param width\r
  48          *            the width of the <code>Quad</code>.\r
  49          * @param height\r
  50          *            the height of the <code>Quad</code>.\r
  51          */\r
  52         public Quad(String name, float width, float height) {\r
  53                 super(name);\r
  54                 initialize(width, height);\r
  55         }\r
  56 \r
  57         /**\r
  58          * <code>resize</code> changes the width and height of the given quad by\r
  59          * altering its vertices.\r
  60          * \r
  61          * @param width\r
  62          *            the new width of the <code>Quad</code>.\r
  63          * @param height\r
  64          *            the new height of the <code>Quad</code>.\r
  65          */\r
  66         public void resize(float width, float height) {\r
  67         TriangleBatch batch = getBatch(0);\r
  68                 batch.getVertexBuffer().clear();\r
  69                 batch.getVertexBuffer().put(-width / 2f).put(height / 2f).put(0);\r
  70                 batch.getVertexBuffer().put(-width / 2f).put(-height / 2f).put(0);\r
  71                 batch.getVertexBuffer().put(width / 2f).put(-height / 2f).put(0);\r
  72                 batch.getVertexBuffer().put(width / 2f).put(height / 2f).put(0);\r
  73         }\r
  74 \r
  75         /**\r
  76          * \r
  77          * <code>initialize</code> builds the data for the <code>Quad</code>\r
  78          * object.\r
  79          * \r
  80          * \r
  81          * @param width\r
  82          *            the width of the <code>Quad</code>.\r
  83          * @param height\r
  84          *            the height of the <code>Quad</code>.\r
  85          */\r
  86         public void initialize(float width, float height) {\r
  87         TriangleBatch batch = getBatch(0);\r
  88                 batch.setVertexCount(4);\r
  89                 batch.setVertexBuffer(BufferUtils.createVector3Buffer(batch.getVertexCount()));\r
  90                 batch.setNormalBuffer(BufferUtils.createVector3Buffer(batch.getVertexCount()));\r
  91         FloatBuffer tbuf = BufferUtils.createVector2Buffer(batch.getVertexCount());\r
  92         setTextureBuffer(0,tbuf);\r
  93             batch.setTriangleQuantity(2);\r
  94             batch.setIndexBuffer(BufferUtils.createIntBuffer(batch.getTriangleCount() * 3));\r
  95 \r
  96                 batch.getVertexBuffer().put(-width / 2f).put(height / 2f).put(0);\r
  97                 batch.getVertexBuffer().put(-width / 2f).put(-height / 2f).put(0);\r
  98                 batch.getVertexBuffer().put(width / 2f).put(-height / 2f).put(0);\r
  99                 batch.getVertexBuffer().put(width / 2f).put(height / 2f).put(0);\r
 100 \r
 101                 batch.getNormalBuffer().put(0).put(0).put(1);\r
 102                 batch.getNormalBuffer().put(0).put(0).put(1);\r
 103                 batch.getNormalBuffer().put(0).put(0).put(1);\r
 104                 batch.getNormalBuffer().put(0).put(0).put(1);\r
 105 \r
 106         \r
 107                 tbuf.put(0).put(0);\r
 108         tbuf.put(0).put(1);\r
 109         tbuf.put(1).put(1);\r
 110         tbuf.put(1).put(0);\r
 111 \r
 112             setDefaultColor(ColorRGBA.white);\r
 113 \r
 114             batch.getIndexBuffer().put(0);\r
 115             batch.getIndexBuffer().put(1);\r
 116             batch.getIndexBuffer().put(2);\r
 117             batch.getIndexBuffer().put(0);\r
 118             batch.getIndexBuffer().put(2);\r
 119             batch.getIndexBuffer().put(3);\r
 120         }\r
 121 \r
 122         /**\r
 123          * <code>getCenter</code> returns the center of the <code>Quad</code>.\r
 124          * \r
 125          * @return Vector3f the center of the <code>Quad</code>.\r
 126          */\r
 127         public Vector3f getCenter() {\r
 128                 return worldTranslation;\r
 129         }\r
 130 }\r