001/** 002 * 003 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved. 004 * 005 * This library is free software; you can redistribute it and/or 006 * modify it under the terms of the GNU Lesser General Public 007 * License as published by the Free Software Foundation; either 008 * version 2.1 of the License, or (at your option) any later version. 009 * 010 * This library is distributed in the hope that it will be useful, 011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 013 * Lesser General Public License for more details. 014 * 015 * You should have received a copy of the GNU Lesser General Public 016 * License along with this library. If not, see <http://www.gnu.org/licenses/>. 017 * 018 **/ 019/* 020* 021 022Licensed under the Apache License, Version 2.0 (the "License"); 023you may not use this file except in compliance with the License. 024You may obtain a copy of the License at 025 026 http://www.apache.org/licenses/LICENSE-2.0 027 028Unless required by applicable law or agreed to in writing, software 029distributed under the License is distributed on an "AS IS" BASIS, 030WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 031See the License for the specific language governing permissions and 032limitations under the License. 033*/ 034 035package lucee.runtime.img.filter;import java.awt.image.BufferedImage; 036 037import lucee.runtime.engine.ThreadLocalPageContext; 038import lucee.runtime.exp.FunctionException; 039import lucee.runtime.exp.PageException; 040import lucee.runtime.img.ImageUtil; 041import lucee.runtime.type.KeyImpl; 042import lucee.runtime.type.Struct; 043import lucee.runtime.type.util.CollectionUtil; 044/** 045 * A filter which simulates chrome. 046 */ 047public class ChromeFilter extends LightFilter implements DynFiltering { 048 private float amount = 0.5f; 049 private float exposure = 1.0f; 050 051 /** 052 * Set the amount of effect. 053 * @param amount the amount 054 * @min-value 0 055 * @max-value 1 056 * @see #getAmount 057 */ 058 public void setAmount(float amount) { 059 this.amount = amount; 060 } 061 062 /** 063 * Get the amount of chrome. 064 * @return the amount 065 * @see #setAmount 066 */ 067 public float getAmount() { 068 return amount; 069 } 070 071 /** 072 * Set the exppsure of the effect. 073 * @param exposure the exposure 074 * @min-value 0 075 * @max-value 1 076 * @see #getExposure 077 */ 078 public void setExposure(float exposure) { 079 this.exposure = exposure; 080 } 081 082 /** 083 * Get the exppsure of the effect. 084 * @return the exposure 085 * @see #setExposure 086 */ 087 public float getExposure() { 088 return exposure; 089 } 090 091 public BufferedImage filter( BufferedImage src, BufferedImage dst ) { 092 setColorSource( LightFilter.COLORS_CONSTANT ); 093 dst = super.filter( src, dst ); 094 TransferFilter tf = new TransferFilter() { 095 protected float transferFunction( float v ) { 096 v += amount * (float)Math.sin( v * 2 * Math.PI ); 097 return 1 - (float)Math.exp(-v * exposure); 098 } 099 }; 100 return tf.filter( dst, dst ); 101 } 102 103 public String toString() { 104 return "Effects/Chrome..."; 105 } 106 public BufferedImage filter(BufferedImage src, Struct parameters) throws PageException {BufferedImage dst=ImageUtil.createBufferedImage(src); 107 Object o; 108 if((o=parameters.removeEL(KeyImpl.init("Amount")))!=null)setAmount(ImageFilterUtil.toFloatValue(o,"Amount")); 109 if((o=parameters.removeEL(KeyImpl.init("Exposure")))!=null)setExposure(ImageFilterUtil.toFloatValue(o,"Exposure")); 110 if((o=parameters.removeEL(KeyImpl.init("ColorSource")))!=null)setColorSource(ImageFilterUtil.toColorRGB(o,"ColorSource")); 111 if((o=parameters.removeEL(KeyImpl.init("Material")))!=null)setMaterial(ImageFilterUtil.toLightFilter$Material(o,"Material")); 112 if((o=parameters.removeEL(KeyImpl.init("BumpFunction")))!=null)setBumpFunction(ImageFilterUtil.toFunction2D(o,"BumpFunction")); 113 if((o=parameters.removeEL(KeyImpl.init("BumpHeight")))!=null)setBumpHeight(ImageFilterUtil.toFloatValue(o,"BumpHeight")); 114 if((o=parameters.removeEL(KeyImpl.init("BumpSoftness")))!=null)setBumpSoftness(ImageFilterUtil.toFloatValue(o,"BumpSoftness")); 115 if((o=parameters.removeEL(KeyImpl.init("BumpShape")))!=null)setBumpShape(ImageFilterUtil.toIntValue(o,"BumpShape")); 116 if((o=parameters.removeEL(KeyImpl.init("ViewDistance")))!=null)setViewDistance(ImageFilterUtil.toFloatValue(o,"ViewDistance")); 117 if((o=parameters.removeEL(KeyImpl.init("EnvironmentMap")))!=null)setEnvironmentMap(ImageFilterUtil.toBufferedImage(o,"EnvironmentMap")); 118 if((o=parameters.removeEL(KeyImpl.init("BumpSource")))!=null)setBumpSource(ImageFilterUtil.toIntValue(o,"BumpSource")); 119 if((o=parameters.removeEL(KeyImpl.init("DiffuseColor")))!=null)setDiffuseColor(ImageFilterUtil.toColorRGB(o,"DiffuseColor")); 120 121 // check for arguments not supported 122 if(parameters.size()>0) { 123 throw new FunctionException(ThreadLocalPageContext.get(), "ImageFilter", 3, "parameters", "the parameter"+(parameters.size()>1?"s":"")+" ["+CollectionUtil.getKeyList(parameters,", ")+"] "+(parameters.size()>1?"are":"is")+" not allowed, only the following parameters are supported [Amount, Exposure, ColorSource, Material, BumpFunction, BumpHeight, BumpSoftness, BumpShape, ViewDistance, EnvironmentMap, BumpSource, DiffuseColor]"); 124 } 125 126 return filter(src, dst); 127 } 128} 129