/* Copyright (C) 1996-1997 Id Software, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. 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 the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ // mathlib.h #ifdef PSP_VFPU #include #endif typedef float vec_t; typedef vec_t vec2_t[2]; typedef vec_t vec3_t[3]; typedef vec_t vec4_t[4]; typedef vec_t vec5_t[5]; typedef byte byte_vec4_t[4]; typedef int fixed4_t; typedef int fixed8_t; typedef int fixed16_t; #ifndef M_PI #define M_PI 3.14159265358979323846 // matches value in gcc v2 math.h #endif struct mplane_s; extern vec3_t vec3_origin; extern int nanmask; /* #ifndef M_PI #define M_PI 3.14159265358979323846 // matches value in gcc v2 math.h #endif #define M_PI_DIV_180 (M_PI / 180.0) //johnfitz //#define DEG2RAD( a ) ( a * M_PI ) / 180.0F #define DEG2RAD( a ) ( (a) * M_PI_DIV_180 ) //johnfitz //#else */ #ifndef M_PI #define M_PI = GU_PI // matches value in gcc v2 math.h #endif #define M_PI_DIV_180 (M_PI / 180.0) //johnfitz //#define DEG2RAD( a ) ( a * M_PI ) / 180.0F #define DEG2RAD( a ) ( (a) * M_PI_DIV_180 ) //johnfitz //#endif #define CLAMP(min, x, max) ((x) < (min) ? (min) : (x) > (max) ? (max) : (x)) //johnfitz #define lhrandom(MIN,MAX) ((rand() & 32767) * (((MAX)-(MIN)) * (1.0f / 32767.0f)) + (MIN)) #define IS_NAN(x) (((*(int *)&x)&nanmask)==nanmask) #define DotProduct(x,y) (x[0]*y[0]+x[1]*y[1]+x[2]*y[2]) #define VectorSubtract(a,b,c) {(c)[0]=(a)[0]-(b)[0];(c)[1]=(a)[1]-(b)[1];(c)[2]=(a)[2]-(b)[2];} #define VectorAdd(a,b,c) {c[0]=a[0]+b[0];c[1]=a[1]+b[1];c[2]=a[2]+b[2];} #define VectorCopy(a,b) {b[0]=a[0];b[1]=a[1];b[2]=a[2];} #define VectorClear(a) ((a)[0] = (a)[1] = (a)[2] = 0) #define VectorNegate(a, b) ((b)[0] = -(a)[0], (b)[1] = -(a)[1], (b)[2] = -(a)[2]) #define VectorSet(v, x, y, z) ((v)[0] = (x), (v)[1] = (y), (v)[2] = (z)) #define VectorRandom(v) {do{(v)[0] = lhrandom(-1, 1);(v)[1] = lhrandom(-1, 1);(v)[2] = lhrandom(-1, 1);}while(DotProduct(v, v) > 1);} #define VSM(a,b,c) {c[0]=a[0]*b;c[1]=a[1]*b;c[2]=a[2]*b;} // MDave -- courtesy of johnfitz, lordhavoc #define VectorNormalizeFast(_v)\ {\ float _y, _number;\ _number = DotProduct(_v, _v);\ if (_number != 0.0)\ {\ *((long *)&_y) = 0x5f3759df - ((* (long *) &_number) >> 1);\ _y = _y * (1.5f - (_number * 0.5f * _y * _y));\ VectorScale(_v, _y, _v);\ }\ } typedef float matrix3x4[3][4]; typedef float matrix3x3[3][3]; void VectorMA (vec3_t veca, float scale, vec3_t vecb, vec3_t vecc); vec_t _DotProduct (vec3_t v1, vec3_t v2); void _VectorSubtract (vec3_t veca, vec3_t vecb, vec3_t out); void _VectorAdd (vec3_t veca, vec3_t vecb, vec3_t out); void _VectorCopy (vec3_t in, vec3_t out); void vectoangles (vec3_t vec, vec3_t ang); int VectorCompare (vec3_t v1, vec3_t v2); vec_t Length (vec3_t v); void CrossProduct (vec3_t v1, vec3_t v2, vec3_t cross); float VectorLength (vec3_t v); float VecLength2(vec3_t v1, vec3_t v2); float VectorNormalize (vec3_t v); // returns vector length void VectorInverse (vec3_t v); void VectorScale (vec3_t in, vec_t scale, vec3_t out); int Q_log2(int val); void R_ConcatRotations (float in1[3][3], float in2[3][3], float out[3][3]); void R_ConcatTransforms (float in1[3][4], float in2[3][4], float out[3][4]); void FloorDivMod (float numer, float denom, int *quotient, int *rem); fixed16_t Invert24To16(fixed16_t val); int GreatestCommonDivisor (int i1, int i2); void AngleVectors (vec3_t angles, vec3_t forward, vec3_t right, vec3_t up); int BoxOnPlaneSide (vec3_t emins, vec3_t emaxs, struct mplane_s *plane); float anglemod(float a); #define VectorL2Compare(v, w, m) \ (_mathlib_temp_float1 = (m) * (m), \ _mathlib_temp_vec1[0] = (v)[0] - (w)[0], _mathlib_temp_vec1[1] = (v)[1] - (w)[1], _mathlib_temp_vec1[2] = (v)[2] - (w)[2],\ _mathlib_temp_vec1[0] * _mathlib_temp_vec1[0] + \ _mathlib_temp_vec1[1] * _mathlib_temp_vec1[1] + \ _mathlib_temp_vec1[2] * _mathlib_temp_vec1[2] < _mathlib_temp_float1) #define VectorSupCompare(v, w, m) \ (_mathlib_temp_float1 = m, \ (v)[0] - (w)[0] > -_mathlib_temp_float1 && (v)[0] - (w)[0] < _mathlib_temp_float1 && \ (v)[1] - (w)[1] > -_mathlib_temp_float1 && (v)[1] - (w)[1] < _mathlib_temp_float1 && \ (v)[2] - (w)[2] > -_mathlib_temp_float1 && (v)[2] - (w)[2] < _mathlib_temp_float1) /* #define VectorNormalizeFast(_v) \ do { \ _mathlib_temp_float1 = DotProduct((_v), (_v)); \ if (_mathlib_temp_float1) { \ _mathlib_temp_float2 = 0.5f * _mathlib_temp_float1; \ _mathlib_temp_int1 = *((int *) &_mathlib_temp_float1); \ _mathlib_temp_int1 = 0x5f375a86 - (_mathlib_temp_int1 >> 1); \ _mathlib_temp_float1 = *((float *) &_mathlib_temp_int1); \ _mathlib_temp_float1 = _mathlib_temp_float1 * (1.5f - _mathlib_temp_float2 * _mathlib_temp_float1 * _mathlib_temp_float1); \ VectorScale((_v), _mathlib_temp_float1, (_v)) \ } \ } while (0); */ #define BOX_ON_PLANE_SIDE(emins, emaxs, p) \ (((p)->type < 3)? \ ( \ ((p)->dist <= (emins)[(p)->type])? \ 1 \ : \ ( \ ((p)->dist >= (emaxs)[(p)->type])?\ 2 \ : \ 3 \ ) \ ) \ : \ BoxOnPlaneSide( (emins), (emaxs), (p))) #define VectorInterpolate(v1, _frac, v2, v) \ do { \ _mathlib_temp_float1 = _frac; \ \ (v)[0] = (v1)[0] + _mathlib_temp_float1 * ((v2)[0] - (v1)[0]);\ (v)[1] = (v1)[1] + _mathlib_temp_float1 * ((v2)[1] - (v1)[1]);\ (v)[2] = (v1)[2] + _mathlib_temp_float1 * ((v2)[2] - (v1)[2]);\ } while(0) #define FloatInterpolate(f1, _frac, f2) \ (_mathlib_temp_float1 = _frac, \ (f1) + _mathlib_temp_float1 * ((f2) - (f1))) #define PlaneDist(point, plane) ( \ (plane)->type < 3 ? (point)[(plane)->type] : DotProduct((point), (plane)->normal) \ ) #define PlaneDiff(point, plane) ( \ (((plane)->type < 3) ? (point)[(plane)->type] - (plane)->dist : DotProduct((point), (plane)->normal) - (plane)->dist) \ ) // Prototypes added by PM. void RotatePointAroundVector( vec3_t dst, const vec3_t dir, const vec3_t point, float degrees ); void VectorTransform (const vec3_t in1, matrix3x4 in2, vec3_t out); extern int _mathlib_temp_int1, _mathlib_temp_int2, _mathlib_temp_int3; extern float _mathlib_temp_float1, _mathlib_temp_float2, _mathlib_temp_float3; extern vec3_t _mathlib_temp_vec1, _mathlib_temp_vec2, _mathlib_temp_vec3;