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 **/ 019package lucee.runtime.functions.image; 020 021import java.awt.RenderingHints; 022 023import javax.media.jai.operator.ShearDescriptor; 024import javax.media.jai.operator.ShearDir; 025 026import lucee.runtime.PageContext; 027import lucee.runtime.exp.FunctionException; 028import lucee.runtime.exp.PageException; 029import lucee.runtime.img.Image; 030 031public class ImageShear { 032 public static String call(PageContext pc, Object name, double shear) throws PageException { 033 return call(pc, name, shear, "horizontal", "nearest"); 034 } 035 036 public static String call(PageContext pc, Object name, double shear, String direction) throws PageException { 037 return call(pc, name, shear, direction,"nearest"); 038 } 039 040 public static String call(PageContext pc, Object name, double shear, String strDirection, String strInterpolation) throws PageException { 041 //if(name instanceof String) name=pc.getVariable(Caster.toString(name)); 042 Image img = Image.toImage(pc,name); 043 044 // direction 045 strDirection=strDirection.toLowerCase().trim(); 046 ShearDir direction; 047 if("horizontal".equals(strDirection)) direction = ShearDescriptor.SHEAR_HORIZONTAL; 048 else if("vertical".equals(strDirection)) direction = ShearDescriptor.SHEAR_VERTICAL; 049 else throw new FunctionException(pc,"ImageShear",3,"direction","invalid direction definition ["+strDirection+"], " + 050 "valid direction values are [horizontal,vertical]"); 051 052 // interpolation 053 strInterpolation=strInterpolation.toLowerCase().trim(); 054 Object interpolation = RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR; 055 if("nearest".equals(strInterpolation)) interpolation = RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR; 056 else if("bilinear".equals(strInterpolation)) interpolation = RenderingHints.VALUE_INTERPOLATION_BILINEAR; 057 else if("bicubic".equals(strInterpolation)) interpolation = RenderingHints.VALUE_INTERPOLATION_BICUBIC; 058 else throw new FunctionException(pc,"ImageTranslate",4,"interpolation","invalid interpolation definition ["+strInterpolation+"], " + 059 "valid interpolation values are [nearest,bilinear,bicubic]"); 060 061 img.shear((float)shear, direction, interpolation); 062 return null; 063 } 064}