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 package com.jme3.scene.plugins.blender.lights; 33 34 import com.jme3.asset.BlenderKey.FeaturesToLoad; 35 import com.jme3.light.DirectionalLight; 36 import com.jme3.light.Light; 37 import com.jme3.light.PointLight; 38 import com.jme3.light.SpotLight; 39 import com.jme3.math.ColorRGBA; 40 import com.jme3.math.FastMath; 41 import com.jme3.scene.plugins.blender.AbstractBlenderHelper; 42 import com.jme3.scene.plugins.blender.BlenderContext; 43 import com.jme3.scene.plugins.blender.BlenderContext.LoadedFeatureDataType; 44 import com.jme3.scene.plugins.blender.exceptions.BlenderFileException; 45 import com.jme3.scene.plugins.blender.file.Structure; 46 import java.util.logging.Level; 47 import java.util.logging.Logger; 48 49 /** 50 * A class that is used in light calculations. 51 * @author Marcin Roguski 52 */ 53 public class LightHelper extends AbstractBlenderHelper { 54 55 private static final Logger LOGGER = Logger.getLogger(LightHelper.class.getName()); 56 57 /** 58 * This constructor parses the given blender version and stores the result. Some functionalities may differ in 59 * different blender versions. 60 * @param blenderVersion 61 * the version read from the blend file 62 * @param fixUpAxis 63 * a variable that indicates if the Y asxis is the UP axis or not 64 */ 65 public LightHelper(String blenderVersion, boolean fixUpAxis) { 66 super(blenderVersion, fixUpAxis); 67 } 68 69 public Light toLight(Structure structure, BlenderContext blenderContext) throws BlenderFileException { 70 Light result = (Light) blenderContext.getLoadedFeature(structure.getOldMemoryAddress(), LoadedFeatureDataType.LOADED_FEATURE); 71 if (result != null) { 72 return result; 73 } 74 int type = ((Number) structure.getFieldValue("type")).intValue(); 75 switch (type) { 76 case 0://Lamp 77 result = new PointLight(); 78 float distance = ((Number) structure.getFieldValue("dist")).floatValue(); 79 ((PointLight) result).setRadius(distance); 80 break; 81 case 1://Sun 82 LOGGER.log(Level.WARNING, "'Sun' lamp is not supported in jMonkeyEngine."); 83 break; 84 case 2://Spot 85 result = new SpotLight(); 86 //range 87 ((SpotLight)result).setSpotRange(((Number) structure.getFieldValue("dist")).floatValue()); 88 //outer angle 89 float outerAngle = ((Number) structure.getFieldValue("spotsize")).floatValue()*FastMath.DEG_TO_RAD * 0.5f; 90 ((SpotLight)result).setSpotOuterAngle(outerAngle); 91 92 //inner angle 93 float spotblend = ((Number) structure.getFieldValue("spotblend")).floatValue(); 94 spotblend = FastMath.clamp(spotblend, 0, 1); 95 float innerAngle = outerAngle * (1 - spotblend); 96 ((SpotLight)result).setSpotInnerAngle(innerAngle); 97 break; 98 case 3://Hemi 99 LOGGER.log(Level.WARNING, "'Hemi' lamp is not supported in jMonkeyEngine."); 100 break; 101 case 4://Area 102 result = new DirectionalLight(); 103 break; 104 default: 105 throw new BlenderFileException("Unknown light source type: " + type); 106 } 107 if (result != null) { 108 float r = ((Number) structure.getFieldValue("r")).floatValue(); 109 float g = ((Number) structure.getFieldValue("g")).floatValue(); 110 float b = ((Number) structure.getFieldValue("b")).floatValue(); 111 result.setColor(new ColorRGBA(r, g, b, 1.0f)); 112 } 113 return result; 114 } 115 116 @Override 117 public boolean shouldBeLoaded(Structure structure, BlenderContext blenderContext) { 118 return (blenderContext.getBlenderKey().getFeaturesToLoad() & FeaturesToLoad.LIGHTS) != 0; 119 } 120 } 121
