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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 5131 | clevermous | 1 | /* |
| 2 | Copyright (C) 1996-1997 Id Software, Inc. |
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| 3 | |||
| 4 | This program is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU General Public License |
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| 6 | as published by the Free Software Foundation; either version 2 |
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| 7 | of the License, or (at your option) any later version. |
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| 8 | |||
| 9 | This program is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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| 12 | |||
| 13 | See the GNU General Public License for more details. |
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| 14 | |||
| 15 | You should have received a copy of the GNU General Public License |
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| 16 | along with this program; if not, write to the Free Software |
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| 17 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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| 18 | |||
| 19 | */ |
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| 20 | // mathlib.h |
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| 21 | |||
| 22 | typedef float vec_t; |
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| 23 | typedef vec_t vec3_t[3]; |
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| 24 | typedef vec_t vec5_t[5]; |
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| 25 | |||
| 26 | typedef int fixed4_t; |
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| 27 | typedef int fixed8_t; |
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| 28 | typedef int fixed16_t; |
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| 29 | |||
| 30 | #ifndef M_PI |
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| 31 | #define M_PI 3.14159265358979323846 // matches value in gcc v2 math.h |
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| 32 | #endif |
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| 33 | |||
| 34 | struct mplane_s; |
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| 35 | |||
| 36 | extern vec3_t vec3_origin; |
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| 37 | extern int nanmask; |
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| 38 | |||
| 39 | #define IS_NAN(x) (((*(int *)&x)&nanmask)==nanmask) |
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| 40 | |||
| 41 | #define DotProduct(x,y) (x[0]*y[0]+x[1]*y[1]+x[2]*y[2]) |
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| 42 | #define VectorSubtract(a,b,c) {c[0]=a[0]-b[0];c[1]=a[1]-b[1];c[2]=a[2]-b[2];} |
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| 43 | #define VectorAdd(a,b,c) {c[0]=a[0]+b[0];c[1]=a[1]+b[1];c[2]=a[2]+b[2];} |
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| 44 | #define VectorCopy(a,b) {b[0]=a[0];b[1]=a[1];b[2]=a[2];} |
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| 45 | |||
| 46 | void VectorMA (vec3_t veca, float scale, vec3_t vecb, vec3_t vecc); |
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| 47 | |||
| 48 | vec_t _DotProduct (vec3_t v1, vec3_t v2); |
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| 49 | void _VectorSubtract (vec3_t veca, vec3_t vecb, vec3_t out); |
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| 50 | void _VectorAdd (vec3_t veca, vec3_t vecb, vec3_t out); |
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| 51 | void _VectorCopy (vec3_t in, vec3_t out); |
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| 52 | |||
| 53 | int VectorCompare (vec3_t v1, vec3_t v2); |
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| 54 | vec_t Length (vec3_t v); |
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| 55 | void CrossProduct (vec3_t v1, vec3_t v2, vec3_t cross); |
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| 56 | float VectorNormalize (vec3_t v); // returns vector length |
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| 57 | void VectorInverse (vec3_t v); |
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| 58 | void VectorScale (vec3_t in, vec_t scale, vec3_t out); |
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| 59 | int Q_log2(int val); |
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| 60 | |||
| 61 | void R_ConcatRotations (float in1[3][3], float in2[3][3], float out[3][3]); |
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| 62 | void R_ConcatTransforms (float in1[3][4], float in2[3][4], float out[3][4]); |
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| 63 | |||
| 64 | void FloorDivMod (double numer, double denom, int *quotient, |
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| 65 | int *rem); |
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| 66 | fixed16_t Invert24To16(fixed16_t val); |
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| 67 | int GreatestCommonDivisor (int i1, int i2); |
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| 68 | |||
| 69 | void AngleVectors (vec3_t angles, vec3_t forward, vec3_t right, vec3_t up); |
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| 70 | int BoxOnPlaneSide (vec3_t emins, vec3_t emaxs, struct mplane_s *plane); |
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| 71 | float anglemod(float a); |
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| 72 | |||
| 73 | |||
| 74 | |||
| 75 | #define BOX_ON_PLANE_SIDE(emins, emaxs, p) \ |
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| 76 | (((p)->type < 3)? \ |
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| 77 | ( \ |
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| 78 | ((p)->dist <= (emins)[(p)->type])? \ |
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| 79 | 1 \ |
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| 80 | : \ |
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| 81 | ( \ |
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| 82 | ((p)->dist >= (emaxs)[(p)->type])?\ |
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| 83 | 2 \ |
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| 84 | : \ |
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| 85 | 3 \ |
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| 86 | ) \ |
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| 87 | ) \ |
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| 88 | : \ |
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| 89 | BoxOnPlaneSide( (emins), (emaxs), (p))) |