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 jme3test.helloworld; 34 35 import com.jme3.app.SimpleApplication; 36 import com.jme3.material.Material; 37 import com.jme3.terrain.geomipmap.TerrainLodControl; 38 import com.jme3.terrain.geomipmap.TerrainQuad; 39 import com.jme3.terrain.geomipmap.lodcalc.DistanceLodCalculator; 40 import com.jme3.terrain.heightmap.AbstractHeightMap; 41 import com.jme3.terrain.heightmap.ImageBasedHeightMap; 42 import com.jme3.texture.Texture; 43 import com.jme3.texture.Texture.WrapMode; 44 45 public class HelloTerrain extends SimpleApplication { 46 47 private TerrainQuad terrain; 48 Material mat_terrain; 49 main(String[] args)50 public static void main(String[] args) { 51 HelloTerrain app = new HelloTerrain(); 52 app.start(); 53 } 54 55 @Override simpleInitApp()56 public void simpleInitApp() { 57 flyCam.setMoveSpeed(50); 58 59 /** 1. Create terrain material and load four textures into it. */ 60 mat_terrain = new Material(assetManager, 61 "Common/MatDefs/Terrain/Terrain.j3md"); 62 63 /** 1.1) Add ALPHA map (for red-blue-green coded splat textures) */ 64 mat_terrain.setTexture("Alpha", assetManager.loadTexture( 65 "Textures/Terrain/splat/alphamap.png")); 66 67 /** 1.2) Add GRASS texture into the red layer (Tex1). */ 68 Texture grass = assetManager.loadTexture( 69 "Textures/Terrain/splat/grass.jpg"); 70 grass.setWrap(WrapMode.Repeat); 71 mat_terrain.setTexture("Tex1", grass); 72 mat_terrain.setFloat("Tex1Scale", 64f); 73 74 /** 1.3) Add DIRT texture into the green layer (Tex2) */ 75 Texture dirt = assetManager.loadTexture( 76 "Textures/Terrain/splat/dirt.jpg"); 77 dirt.setWrap(WrapMode.Repeat); 78 mat_terrain.setTexture("Tex2", dirt); 79 mat_terrain.setFloat("Tex2Scale", 32f); 80 81 /** 1.4) Add ROAD texture into the blue layer (Tex3) */ 82 Texture rock = assetManager.loadTexture( 83 "Textures/Terrain/splat/road.jpg"); 84 rock.setWrap(WrapMode.Repeat); 85 mat_terrain.setTexture("Tex3", rock); 86 mat_terrain.setFloat("Tex3Scale", 128f); 87 88 /** 2. Create the height map */ 89 AbstractHeightMap heightmap = null; 90 Texture heightMapImage = assetManager.loadTexture( 91 "Textures/Terrain/splat/mountains512.png"); 92 heightmap = new ImageBasedHeightMap(heightMapImage.getImage()); 93 heightmap.load(); 94 95 /** 3. We have prepared material and heightmap. 96 * Now we create the actual terrain: 97 * 3.1) Create a TerrainQuad and name it "my terrain". 98 * 3.2) A good value for terrain tiles is 64x64 -- so we supply 64+1=65. 99 * 3.3) We prepared a heightmap of size 512x512 -- so we supply 512+1=513. 100 * 3.4) As LOD step scale we supply Vector3f(1,1,1). 101 * 3.5) We supply the prepared heightmap itself. 102 */ 103 int patchSize = 65; 104 terrain = new TerrainQuad("my terrain", patchSize, 513, heightmap.getHeightMap()); 105 106 /** 4. We give the terrain its material, position & scale it, and attach it. */ 107 terrain.setMaterial(mat_terrain); 108 terrain.setLocalTranslation(0, -100, 0); 109 terrain.setLocalScale(2f, 1f, 2f); 110 rootNode.attachChild(terrain); 111 112 /** 5. The LOD (level of detail) depends on were the camera is: */ 113 TerrainLodControl control = new TerrainLodControl(terrain, getCamera()); 114 control.setLodCalculator( new DistanceLodCalculator(patchSize, 2.7f) ); // patch size, and a multiplier 115 terrain.addControl(control); 116 } 117 } 118
