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 */ 36 class Angle { 37 public: 38 Angle(float angle); 39 Angle(); 40 virtual ~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 72 protected: 73 void _InitTrigTables(void); 74 75 float fAngleValue; 76 }; 77 78 #endif 79