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.math; 018 019public class MathFunction1D implements Function1D { 020 021 public final static int SIN = 1; 022 public final static int COS = 2; 023 public final static int TAN = 3; 024 public final static int SQRT = 4; 025 public final static int ASIN = -1; 026 public final static int ACOS = -2; 027 public final static int ATAN = -3; 028 public final static int SQR = -4; 029 030 private int operation; 031 032 public MathFunction1D(int operation) { 033 this.operation = operation; 034 } 035 036 public float evaluate(float v) { 037 switch (operation) { 038 case SIN: 039 return (float)Math.sin(v); 040 case COS: 041 return (float)Math.cos(v); 042 case TAN: 043 return (float)Math.tan(v); 044 case SQRT: 045 return (float)Math.sqrt(v); 046 case ASIN: 047 return (float)Math.asin(v); 048 case ACOS: 049 return (float)Math.acos(v); 050 case ATAN: 051 return (float)Math.atan(v); 052 case SQR: 053 return v*v; 054 } 055 return v; 056 } 057} 058