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 // $Id: Box.java 4131 2009-03-19 20:15:28Z blaine.dev $ 34 package com.jme3.scene.shape; 35 36 import com.jme3.math.Vector3f; 37 import com.jme3.scene.VertexBuffer.Type; 38 import com.jme3.util.BufferUtils; 39 import java.nio.FloatBuffer; 40 41 /** 42 * A box with solid (filled) faces. 43 * 44 * @author Mark Powell 45 * @version $Revision: 4131 $, $Date: 2009-03-19 16:15:28 -0400 (Thu, 19 Mar 2009) $ 46 */ 47 public class StripBox extends AbstractBox { 48 49 private static final short[] GEOMETRY_INDICES_DATA = 50 { 1, 0, 4, 51 5, 52 7, 53 0, 54 3, 55 1, 56 2, 57 4, 58 6, 59 7, 60 2, 61 3 }; 62 63 private static final float[] GEOMETRY_TEXTURE_DATA = { 64 1, 0, 65 0, 0, 66 0, 1, 67 1, 1, 68 69 1, 0, 70 0, 0, 71 1, 1, 72 0, 1 73 }; 74 75 /** 76 * Creates a new box. 77 * <p> 78 * The box has a center of 0,0,0 and extends in the out from the center by 79 * the given amount in <em>each</em> direction. So, for example, a box 80 * with extent of 0.5 would be the unit cube. 81 * 82 * @param x the size of the box along the x axis, in both directions. 83 * @param y the size of the box along the y axis, in both directions. 84 * @param z the size of the box along the z axis, in both directions. 85 */ StripBox(float x, float y, float z)86 public StripBox(float x, float y, float z) { 87 super(); 88 updateGeometry(Vector3f.ZERO, x, y, z); 89 } 90 91 /** 92 * Creates a new box. 93 * <p> 94 * The box has the given center and extends in the out from the center by 95 * the given amount in <em>each</em> direction. So, for example, a box 96 * with extent of 0.5 would be the unit cube. 97 * 98 * @param center the center of the box. 99 * @param x the size of the box along the x axis, in both directions. 100 * @param y the size of the box along the y axis, in both directions. 101 * @param z the size of the box along the z axis, in both directions. 102 */ StripBox(Vector3f center, float x, float y, float z)103 public StripBox(Vector3f center, float x, float y, float z) { 104 super(); 105 updateGeometry(center, x, y, z); 106 } 107 108 /** 109 * Constructor instantiates a new <code>Box</code> object. 110 * <p> 111 * The minimum and maximum point are provided, these two points define the 112 * shape and size of the box but not it’s orientation or position. You should 113 * use the {@link #setLocalTranslation()} and {@link #setLocalRotation()} 114 * methods to define those properties. 115 * 116 * @param min the minimum point that defines the box. 117 * @param max the maximum point that defines the box. 118 */ StripBox(Vector3f min, Vector3f max)119 public StripBox(Vector3f min, Vector3f max) { 120 super(); 121 updateGeometry(min, max); 122 } 123 124 /** 125 * Empty constructor for serialization only. Do not use. 126 */ StripBox()127 public StripBox(){ 128 super(); 129 } 130 131 /** 132 * Creates a clone of this box. 133 * <p> 134 * The cloned box will have ‘_clone’ appended to it’s name, but all other 135 * properties will be the same as this box. 136 */ 137 @Override clone()138 public StripBox clone() { 139 return new StripBox(center.clone(), xExtent, yExtent, zExtent); 140 } 141 duUpdateGeometryIndices()142 protected void duUpdateGeometryIndices() { 143 if (getBuffer(Type.Index) == null){ 144 setBuffer(Type.Index, 3, BufferUtils.createShortBuffer(GEOMETRY_INDICES_DATA)); 145 } 146 } 147 duUpdateGeometryNormals()148 protected void duUpdateGeometryNormals() { 149 if (getBuffer(Type.Normal) == null){ 150 float[] normals = new float[8 * 3]; 151 152 Vector3f[] vert = computeVertices(); 153 Vector3f norm = new Vector3f(); 154 155 for (int i = 0; i < 8; i++) { 156 norm.set(vert[i]).normalizeLocal(); 157 158 normals[i * 3 + 0] = norm.x; 159 normals[i * 3 + 1] = norm.x; 160 normals[i * 3 + 2] = norm.x; 161 } 162 163 setBuffer(Type.Normal, 3, BufferUtils.createFloatBuffer(normals)); 164 } 165 } 166 duUpdateGeometryTextures()167 protected void duUpdateGeometryTextures() { 168 if (getBuffer(Type.TexCoord) == null){ 169 setBuffer(Type.TexCoord, 2, BufferUtils.createFloatBuffer(GEOMETRY_TEXTURE_DATA)); 170 } 171 } 172 duUpdateGeometryVertices()173 protected void duUpdateGeometryVertices() { 174 FloatBuffer fpb = BufferUtils.createVector3Buffer(8 * 3); 175 Vector3f[] v = computeVertices(); 176 fpb.put(new float[] { 177 v[0].x, v[0].y, v[0].z, 178 v[1].x, v[1].y, v[1].z, 179 v[2].x, v[2].y, v[2].z, 180 v[3].x, v[3].y, v[3].z, 181 v[4].x, v[4].y, v[4].z, 182 v[5].x, v[5].y, v[5].z, 183 v[6].x, v[6].y, v[6].z, 184 v[7].x, v[7].y, v[7].z, 185 }); 186 setBuffer(Type.Position, 3, fpb); 187 setMode(Mode.TriangleStrip); 188 updateBound(); 189 } 190 191 }