mirror of
https://github.com/rehlds/hitboxtracker.git
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177 lines
4.0 KiB
C++
177 lines
4.0 KiB
C++
/*
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* In addition, as a special exception, the author gives permission to
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* link the code of this program with the Half-Life Game Engine ("HL
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* Engine") and Modified Game Libraries ("MODs") developed by Valve,
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* L.L.C ("Valve"). You must obey the GNU General Public License in all
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* respects for all of the code used other than the HL Engine and MODs
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* from Valve. If you modify this file, you may extend this exception
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* to your version of the file, but you are not obligated to do so. If
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* you do not wish to do so, delete this exception statement from your
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* version.
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*
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*/
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#ifndef MATHLIB_H
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#define MATHLIB_H
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#ifdef _WIN32
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#pragma once
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#endif
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typedef float vec_t;
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#if !defined DID_VEC3_T_DEFINE && !defined vec3_t
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#define DID_VEC3_T_DEFINE
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typedef vec_t vec3_t[3];
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#endif
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typedef vec_t vec4_t[4];
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typedef int fixed16_t;
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typedef union DLONG_u
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{
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int i[2];
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double d;
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float f;
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} DLONG;
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#define M_PI 3.14159265358979323846
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#ifdef __cplusplus
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#ifdef min
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#undef min
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#endif
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#ifdef max
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#undef max
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#endif
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#ifdef clamp
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#undef clamp
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#endif
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template <typename T>
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inline T min(T a, T b)
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{
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return (a < b) ? a : b;
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}
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template <typename T>
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inline T max(T a, T b)
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{
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return (a < b) ? b : a;
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}
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template <typename T>
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inline T clamp(T a, T min, T max)
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{
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return (a > max) ? max : (a < min) ? min : a;
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}
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template <typename T>
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inline T bswap(T s)
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{
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switch (sizeof(T))
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{
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case 2: {auto res = __builtin_bswap16(*(uint16 *)&s); return *(T *)&res; }
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case 4: {auto res = __builtin_bswap32(*(uint32 *)&s); return *(T *)&res; }
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case 8: {auto res = __builtin_bswap64(*(uint64 *)&s); return *(T *)&res; }
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default: return s;
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}
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}
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#else // __cplusplus
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#ifndef max
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#define max(a,b) (((a) > (b)) ? (a) : (b))
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#endif
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#ifndef min
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#define min(a,b) (((a) < (b)) ? (a) : (b))
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#endif
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#define clamp(val, min, max) (((val) > (max)) ? (max) : (((val) < (min)) ? (min) : (val)))
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#endif // __cplusplus
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inline void VectorAdd(const vec_t *veca, const vec_t *vecb, vec_t *out)
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{
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out[0] = veca[0] + vecb[0];
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out[1] = veca[1] + vecb[1];
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out[2] = veca[2] + vecb[2];
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}
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inline void VectorSubtract(const vec_t *veca, const vec_t *vecb, vec_t *out)
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{
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out[0] = veca[0] - vecb[0];
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out[1] = veca[1] - vecb[1];
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out[2] = veca[2] - vecb[2];
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}
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inline void VectorMA(const vec_t *veca, float scale, const vec_t *vecm, vec_t *out)
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{
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out[0] = scale * vecm[0] + veca[0];
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out[1] = scale * vecm[1] + veca[1];
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out[2] = scale * vecm[2] + veca[2];
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}
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inline void VectorScale(const vec_t *in, float scale, vec_t *out)
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{
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out[0] = scale * in[0];
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out[1] = scale * in[1];
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out[2] = scale * in[2];
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}
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inline void VectorClear(vec_t *in)
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{
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in[0] = 0.0f;
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in[1] = 0.0f;
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in[2] = 0.0f;
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}
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inline void VectorCopy(const vec_t *in, vec_t *out)
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{
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out[0] = in[0];
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out[1] = in[1];
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out[2] = in[2];
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}
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inline void VectorNegate(const vec_t *in, vec_t *out)
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{
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out[0] = -in[0];
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out[1] = -in[1];
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out[2] = -in[2];
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}
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inline void VectorInverse(vec_t *in)
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{
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in[0] = -in[0];
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in[1] = -in[1];
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in[2] = -in[2];
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}
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inline void VectorAverage(const vec_t *veca, const vec_t *vecb, vec_t *out)
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{
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out[0] = (veca[0] + vecb[0]) * 0.5f;
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out[1] = (veca[1] + vecb[1]) * 0.5f;
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out[2] = (veca[2] + vecb[2]) * 0.5f;
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}
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inline bool VectorIsZero(const vec_t *in)
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{
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return (in[0] == 0.0f && in[1] == 0.0f && in[2] == 0.0f);
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}
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#endif // MATHLIB_H
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