001/* 002Copyright 2006 Jerry Huxtable 003 004Licensed under the Apache License, Version 2.0 (the "License"); 005you may not use this file except in compliance with the License. 006You may obtain a copy of the License at 007 008 http://www.apache.org/licenses/LICENSE-2.0 009 010Unless required by applicable law or agreed to in writing, software 011distributed under the License is distributed on an "AS IS" BASIS, 012WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013See the License for the specific language governing permissions and 014limitations under the License. 015*/ 016 017package com.jhlabs.image; 018 019import java.awt.*; 020import java.awt.image.*; 021import com.jhlabs.math.*; 022 023public class MapFilter extends TransformFilter { 024 025 private Function2D xMapFunction; 026 private Function2D yMapFunction; 027 028 public MapFilter() { 029 } 030 031 public void setXMapFunction(Function2D xMapFunction) { 032 this.xMapFunction = xMapFunction; 033 } 034 035 public Function2D getXMapFunction() { 036 return xMapFunction; 037 } 038 039 public void setYMapFunction(Function2D yMapFunction) { 040 this.yMapFunction = yMapFunction; 041 } 042 043 public Function2D getYMapFunction() { 044 return yMapFunction; 045 } 046 047 protected void transformInverse(int x, int y, float[] out) { 048 float xMap, yMap; 049 xMap = xMapFunction.evaluate(x, y); 050 yMap = yMapFunction.evaluate(x, y); 051 out[0] = xMap * transformedSpace.width; 052 out[1] = yMap * transformedSpace.height; 053 } 054 055 public String toString() { 056 return "Distort/Map Coordinates..."; 057 } 058}