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.math; 036 037public class MathFunction1D implements Function1D { 038 039 public final static int SIN = 1; 040 public final static int COS = 2; 041 public final static int TAN = 3; 042 public final static int SQRT = 4; 043 public final static int ASIN = -1; 044 public final static int ACOS = -2; 045 public final static int ATAN = -3; 046 public final static int SQR = -4; 047 048 private int operation; 049 050 public MathFunction1D(int operation) { 051 this.operation = operation; 052 } 053 054 public float evaluate(float v) { 055 switch (operation) { 056 case SIN: 057 return (float)Math.sin(v); 058 case COS: 059 return (float)Math.cos(v); 060 case TAN: 061 return (float)Math.tan(v); 062 case SQRT: 063 return (float)Math.sqrt(v); 064 case ASIN: 065 return (float)Math.asin(v); 066 case ACOS: 067 return (float)Math.acos(v); 068 case ATAN: 069 return (float)Math.atan(v); 070 case SQR: 071 return v*v; 072 } 073 return v; 074 } 075} 076