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
046
047public class PointillizeFilter extends CellularFilter  implements DynFiltering {
048
049        private float edgeThickness = 0.4f;
050        private boolean fadeEdges = false;
051        private int edgeColor = 0xff000000;
052        private float fuzziness = 0.1f;
053
054        public PointillizeFilter() {
055                setScale(16);
056                setRandomness(0.0f);
057        }
058        
059        public void setEdgeThickness(float edgeThickness) {
060                this.edgeThickness = edgeThickness;
061        }
062
063        public float getEdgeThickness() {
064                return edgeThickness;
065        }
066
067        public void setFadeEdges(boolean fadeEdges) {
068                this.fadeEdges = fadeEdges;
069        }
070
071        public boolean getFadeEdges() {
072                return fadeEdges;
073        }
074
075        public void setEdgeColor(int edgeColor) {
076                this.edgeColor = edgeColor;
077        }
078
079        public int getEdgeColor() {
080                return edgeColor;
081        }
082
083        public void setFuzziness(float fuzziness) {
084                this.fuzziness = fuzziness;
085        }
086
087        public float getFuzziness() {
088                return fuzziness;
089        }
090
091        public int getPixel(int x, int y, int[] inPixels, int width, int height) {
092                float nx = m00*x + m01*y;
093                float ny = m10*x + m11*y;
094                nx /= scale;
095                ny /= scale * stretch;
096                nx += 1000;
097                ny += 1000;     // Reduce artifacts around 0,0
098                float f = evaluate(nx, ny);
099
100                float f1 = results[0].distance;
101                int srcx = ImageMath.clamp((int)((results[0].x-1000)*scale), 0, width-1);
102                int srcy = ImageMath.clamp((int)((results[0].y-1000)*scale), 0, height-1);
103                int v = inPixels[srcy * width + srcx];
104
105                if (fadeEdges) {
106                        float f2 = results[1].distance;
107                        srcx = ImageMath.clamp((int)((results[1].x-1000)*scale), 0, width-1);
108                        srcy = ImageMath.clamp((int)((results[1].y-1000)*scale), 0, height-1);
109                        int v2 = inPixels[srcy * width + srcx];
110                        v = ImageMath.mixColors(0.5f*f1/f2, v, v2);
111                } else {
112                        f = 1-ImageMath.smoothStep(edgeThickness, edgeThickness+fuzziness, f1);
113                        v = ImageMath.mixColors(f, edgeColor, v);
114                }
115                return v;
116        }
117
118        public String toString() {
119                return "Stylize/Pointillize...";
120        }
121        
122        public BufferedImage filter(BufferedImage src, Struct parameters) throws PageException {BufferedImage dst=ImageUtil.createBufferedImage(src);
123                Object o;
124                if((o=parameters.removeEL(KeyImpl.init("Fuzziness")))!=null)setFuzziness(ImageFilterUtil.toFloatValue(o,"Fuzziness"));
125                if((o=parameters.removeEL(KeyImpl.init("EdgeThickness")))!=null)setEdgeThickness(ImageFilterUtil.toFloatValue(o,"EdgeThickness"));
126                if((o=parameters.removeEL(KeyImpl.init("FadeEdges")))!=null)setFadeEdges(ImageFilterUtil.toBooleanValue(o,"FadeEdges"));
127                if((o=parameters.removeEL(KeyImpl.init("EdgeColor")))!=null)setEdgeColor(ImageFilterUtil.toColorRGB(o,"EdgeColor"));
128                if((o=parameters.removeEL(KeyImpl.init("Colormap")))!=null)setColormap(ImageFilterUtil.toColormap(o,"Colormap"));
129                if((o=parameters.removeEL(KeyImpl.init("Amount")))!=null)setAmount(ImageFilterUtil.toFloatValue(o,"Amount"));
130                if((o=parameters.removeEL(KeyImpl.init("Turbulence")))!=null)setTurbulence(ImageFilterUtil.toFloatValue(o,"Turbulence"));
131                if((o=parameters.removeEL(KeyImpl.init("Stretch")))!=null)setStretch(ImageFilterUtil.toFloatValue(o,"Stretch"));
132                if((o=parameters.removeEL(KeyImpl.init("Angle")))!=null)setAngle(ImageFilterUtil.toFloatValue(o,"Angle"));
133                if((o=parameters.removeEL(KeyImpl.init("AngleCoefficient")))!=null)setAngleCoefficient(ImageFilterUtil.toFloatValue(o,"AngleCoefficient"));
134                if((o=parameters.removeEL(KeyImpl.init("GradientCoefficient")))!=null)setGradientCoefficient(ImageFilterUtil.toFloatValue(o,"GradientCoefficient"));
135                if((o=parameters.removeEL(KeyImpl.init("F1")))!=null)setF1(ImageFilterUtil.toFloatValue(o,"F1"));
136                if((o=parameters.removeEL(KeyImpl.init("F2")))!=null)setF2(ImageFilterUtil.toFloatValue(o,"F2"));
137                if((o=parameters.removeEL(KeyImpl.init("F3")))!=null)setF3(ImageFilterUtil.toFloatValue(o,"F3"));
138                if((o=parameters.removeEL(KeyImpl.init("F4")))!=null)setF4(ImageFilterUtil.toFloatValue(o,"F4"));
139                if((o=parameters.removeEL(KeyImpl.init("Randomness")))!=null)setRandomness(ImageFilterUtil.toFloatValue(o,"Randomness"));
140                if((o=parameters.removeEL(KeyImpl.init("GridType")))!=null)setGridType(ImageFilterUtil.toString(o,"GridType"));
141                if((o=parameters.removeEL(KeyImpl.init("DistancePower")))!=null)setDistancePower(ImageFilterUtil.toFloatValue(o,"DistancePower"));
142                if((o=parameters.removeEL(KeyImpl.init("Scale")))!=null)setScale(ImageFilterUtil.toFloatValue(o,"Scale"));
143
144                // check for arguments not supported
145                if(parameters.size()>0) {
146                        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 [Fuzziness, EdgeThickness, FadeEdges, EdgeColor, Colormap, Amount, Turbulence, Stretch, Angle, Coefficient, AngleCoefficient, GradientCoefficient, F1, F2, F3, F4, Randomness, GridType, DistancePower, Scale]");
147                }
148
149                return filter(src, dst);
150        }
151}