1//------------------------------------------------------------------------------ 2// Copyright (c) 2001-2002, Haiku, Inc. 3// 4// Permission is hereby granted, free of charge, to any person obtaining a 5// copy of this software and associated documentation files (the "Software"), 6// to deal in the Software without restriction, including without limitation 7// the rights to use, copy, modify, merge, publish, distribute, sublicense, 8// and/or sell copies of the Software, and to permit persons to whom the 9// Software is furnished to do so, subject to the following conditions: 10// 11// The above copyright notice and this permission notice shall be included in 12// all copies or substantial portions of the Software. 13// 14// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 17// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 19// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 20// DEALINGS IN THE SOFTWARE. 21// 22// File Name: Angle.h 23// Author: DarkWyrm <bpmagic@columbus.rr.com> 24// Description: Angle class for speeding up trig functions 25// 26//------------------------------------------------------------------------------ 27#ifndef _ANGLE_H_ 28#define _ANGLE_H_ 29 30#include <GraphicsDefs.h> 31 32/*! 33 \class Angle Angle.h 34 \brief Class for speeding up trig functions. Works in degrees only. 35*/ 36class Angle { 37public: 38 Angle(float angle); 39 Angle(); 40virtual ~Angle(); 41 42 void Normalize(); 43 44 float Sine(void); 45 Angle InvSine(float value); 46 47 float Cosine(void); 48 Angle InvCosine(float value); 49 50 float Tangent(int *status=NULL); 51 Angle InvTangent(float value); 52 53 uint8 Quadrant(void); 54 Angle Constrain180(void); 55 Angle Constrain90(void); 56 57 void SetValue(float angle); 58 float Value(void) const; 59 60 Angle &operator=(const Angle &from); 61 Angle &operator=(const float &from); 62 Angle &operator=(const long &from); 63 Angle &operator=(const int &from); 64 65 bool operator==(const Angle &from); 66 bool operator!=(const Angle &from); 67 bool operator<(const Angle &from); 68 bool operator>(const Angle &from); 69 bool operator>=(const Angle &from); 70 bool operator<=(const Angle &from); 71 72protected: 73 void _InitTrigTables(void); 74 75 float fAngleValue; 76}; 77 78#endif 79