001 /* 002 * 003 004 Licensed under the Apache License, Version 2.0 (the "License"); 005 you may not use this file except in compliance with the License. 006 You may obtain a copy of the License at 007 008 http://www.apache.org/licenses/LICENSE-2.0 009 010 Unless required by applicable law or agreed to in writing, software 011 distributed under the License is distributed on an "AS IS" BASIS, 012 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 See the License for the specific language governing permissions and 014 limitations under the License. 015 */ 016 017 package railo.runtime.img.filter;import java.awt.image.BufferedImage; 018 019 import railo.runtime.engine.ThreadLocalPageContext; 020 import railo.runtime.exp.FunctionException; 021 import railo.runtime.exp.PageException; 022 import railo.runtime.img.ImageUtil; 023 import railo.runtime.type.KeyImpl; 024 import railo.runtime.type.List; 025 import railo.runtime.type.Struct; 026 /** 027 * A filter which simulates chrome. 028 */ 029 public class ChromeFilter extends LightFilter implements DynFiltering { 030 private float amount = 0.5f; 031 private float exposure = 1.0f; 032 033 /** 034 * Set the amount of effect. 035 * @param amount the amount 036 * @min-value 0 037 * @max-value 1 038 * @see #getAmount 039 */ 040 public void setAmount(float amount) { 041 this.amount = amount; 042 } 043 044 /** 045 * Get the amount of chrome. 046 * @return the amount 047 * @see #setAmount 048 */ 049 public float getAmount() { 050 return amount; 051 } 052 053 /** 054 * Set the exppsure of the effect. 055 * @param exposure the exposure 056 * @min-value 0 057 * @max-value 1 058 * @see #getExposure 059 */ 060 public void setExposure(float exposure) { 061 this.exposure = exposure; 062 } 063 064 /** 065 * Get the exppsure of the effect. 066 * @return the exposure 067 * @see #setExposure 068 */ 069 public float getExposure() { 070 return exposure; 071 } 072 073 public BufferedImage filter( BufferedImage src, BufferedImage dst ) { 074 setColorSource( LightFilter.COLORS_CONSTANT ); 075 dst = super.filter( src, dst ); 076 TransferFilter tf = new TransferFilter() { 077 protected float transferFunction( float v ) { 078 v += amount * (float)Math.sin( v * 2 * Math.PI ); 079 return 1 - (float)Math.exp(-v * exposure); 080 } 081 }; 082 return tf.filter( dst, dst ); 083 } 084 085 public String toString() { 086 return "Effects/Chrome..."; 087 } 088 public BufferedImage filter(BufferedImage src, Struct parameters) throws PageException {BufferedImage dst=ImageUtil.createBufferedImage(src); 089 Object o; 090 if((o=parameters.removeEL(KeyImpl.init("Amount")))!=null)setAmount(ImageFilterUtil.toFloatValue(o,"Amount")); 091 if((o=parameters.removeEL(KeyImpl.init("Exposure")))!=null)setExposure(ImageFilterUtil.toFloatValue(o,"Exposure")); 092 if((o=parameters.removeEL(KeyImpl.init("ColorSource")))!=null)setColorSource(ImageFilterUtil.toColorRGB(o,"ColorSource")); 093 if((o=parameters.removeEL(KeyImpl.init("Material")))!=null)setMaterial(ImageFilterUtil.toLightFilter$Material(o,"Material")); 094 if((o=parameters.removeEL(KeyImpl.init("BumpFunction")))!=null)setBumpFunction(ImageFilterUtil.toFunction2D(o,"BumpFunction")); 095 if((o=parameters.removeEL(KeyImpl.init("BumpHeight")))!=null)setBumpHeight(ImageFilterUtil.toFloatValue(o,"BumpHeight")); 096 if((o=parameters.removeEL(KeyImpl.init("BumpSoftness")))!=null)setBumpSoftness(ImageFilterUtil.toFloatValue(o,"BumpSoftness")); 097 if((o=parameters.removeEL(KeyImpl.init("BumpShape")))!=null)setBumpShape(ImageFilterUtil.toIntValue(o,"BumpShape")); 098 if((o=parameters.removeEL(KeyImpl.init("ViewDistance")))!=null)setViewDistance(ImageFilterUtil.toFloatValue(o,"ViewDistance")); 099 if((o=parameters.removeEL(KeyImpl.init("EnvironmentMap")))!=null)setEnvironmentMap(ImageFilterUtil.toBufferedImage(o,"EnvironmentMap")); 100 if((o=parameters.removeEL(KeyImpl.init("BumpSource")))!=null)setBumpSource(ImageFilterUtil.toIntValue(o,"BumpSource")); 101 if((o=parameters.removeEL(KeyImpl.init("DiffuseColor")))!=null)setDiffuseColor(ImageFilterUtil.toColorRGB(o,"DiffuseColor")); 102 103 // check for arguments not supported 104 if(parameters.size()>0) { 105 throw new FunctionException(ThreadLocalPageContext.get(), "ImageFilter", 3, "parameters", "the parameter"+(parameters.size()>1?"s":"")+" ["+List.arrayToList(parameters.keysAsString(),", ")+"] "+(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]"); 106 } 107 108 return filter(src, dst); 109 } 110 } 111