#pragma once //======================================================================== // CMath.h - useful and fast math functions and approximations // // // Part of the GameCode4 Application // // GameCode4 is the sample application that encapsulates much of the source code // discussed in "Game Coding Complete - 4th Edition" by Mike McShaffry and David // "Rez" Graham, published by Charles River Media. // ISBN-10: 1133776574 | ISBN-13: 978-1133776574 // // If this source code has found it's way to you, and you think it has helped you // in any way, do the authors a favor and buy a new copy of the book - there are // detailed explanations in it that compliment this code well. Buy a copy at Amazon.com // by clicking here: // http://www.amazon.com/gp/product/1133776574/ref=olp_product_details?ie=UTF8&me=&seller= // // There's a companion web site at http://www.mcshaffry.com/GameCode/ // // The source code is managed and maintained through Google Code: // http://code.google.com/p/gamecode4/ // // (c) Copyright 2012 Michael L. McShaffry and David Graham // // This program is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser GPL v3 // as published by the Free Software Foundation. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See // http://www.gnu.org/licenses/lgpl-3.0.txt for more details. // // You should have received a copy of the GNU Lesser GPL v3 // along with this program; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. // //======================================================================== //======================================================================== // // Original Code written at Compulsive Development // //======================================================================== //-------------------------------------------------------------------------------- // Includes //-------------------------------------------------------------------------------- #include "../Graphics3D/Geometry.h" #include #include //-------------------------------------------------------------------------------- // Defines //-------------------------------------------------------------------------------- //-------------------------------------------------------------------------------- /* Period parameters */ #define CMATH_N 624 #define CMATH_M 397 #define CMATH_MATRIX_A 0x9908b0df /* constant vector a */ #define CMATH_UPPER_MASK 0x80000000 /* most significant w-r bits */ #define CMATH_LOWER_MASK 0x7fffffff /* least significant r bits */ /* Tempering parameters */ #define CMATH_TEMPERING_MASK_B 0x9d2c5680 #define CMATH_TEMPERING_MASK_C 0xefc60000 #define CMATH_TEMPERING_SHIFT_U(y) (y >> 11) #define CMATH_TEMPERING_SHIFT_S(y) (y << 7) #define CMATH_TEMPERING_SHIFT_T(y) (y << 15) #define CMATH_TEMPERING_SHIFT_L(y) (y >> 18) #define RADIANS_TO_DEGREES(x) ((x) * 180.0f / GCC_PI) #define DEGREES_TO_RADIANS(x) ((x) * GCC_PI / 180.0f)