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.scene.Mesh; 36 import com.jme3.scene.Mesh.Mode; 37 import com.jme3.scene.VertexBuffer.Type; 38 import com.jme3.util.BufferUtils; 39 import java.nio.FloatBuffer; 40 import java.nio.ShortBuffer; 41 42 /** 43 * Simple grid shape. 44 * 45 * @author Kirill Vainer 46 */ 47 public class Grid extends Mesh { 48 49 /** 50 * Creates a grid debug shape. 51 * @param xLines 52 * @param yLines 53 * @param lineDist 54 */ Grid(int xLines, int yLines, float lineDist)55 public Grid(int xLines, int yLines, float lineDist){ 56 xLines -= 2; 57 yLines -= 2; 58 int lineCount = xLines + yLines + 4; 59 60 FloatBuffer fpb = BufferUtils.createFloatBuffer(6 * lineCount); 61 ShortBuffer sib = BufferUtils.createShortBuffer(2 * lineCount); 62 63 float xLineLen = (yLines + 1) * lineDist; 64 float yLineLen = (xLines + 1) * lineDist; 65 int curIndex = 0; 66 67 // add lines along X 68 for (int i = 0; i < xLines + 2; i++){ 69 float y = (i) * lineDist; 70 71 // positions 72 fpb.put(0) .put(0).put(y); 73 fpb.put(xLineLen).put(0).put(y); 74 75 // indices 76 sib.put( (short) (curIndex++) ); 77 sib.put( (short) (curIndex++) ); 78 } 79 80 // add lines along Y 81 for (int i = 0; i < yLines + 2; i++){ 82 float x = (i) * lineDist; 83 84 // positions 85 fpb.put(x).put(0).put(0); 86 fpb.put(x).put(0).put(yLineLen); 87 88 // indices 89 sib.put( (short) (curIndex++) ); 90 sib.put( (short) (curIndex++) ); 91 } 92 93 fpb.flip(); 94 sib.flip(); 95 96 setBuffer(Type.Position, 3, fpb); 97 setBuffer(Type.Index, 2, sib); 98 99 setMode(Mode.Lines); 100 101 updateBound(); 102 updateCounts(); 103 } 104 105 } 106