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1.1 ! root 1: // mathlib.h ! 2: ! 3: typedef float vec_t; ! 4: typedef vec_t vec3_t[3]; ! 5: typedef vec_t vec5_t[5]; ! 6: ! 7: typedef int fixed4_t; ! 8: typedef int fixed8_t; ! 9: typedef int fixed16_t; ! 10: ! 11: #ifndef M_PI ! 12: #define M_PI 3.14159265358979323846 // matches value in gcc v2 math.h ! 13: #endif ! 14: ! 15: struct mplane_s; ! 16: ! 17: extern vec3_t vec3_origin; ! 18: extern int nanmask; ! 19: ! 20: #define IS_NAN(x) (((*(int *)&x)&nanmask)==nanmask) ! 21: ! 22: #define DotProduct(x,y) (x[0]*y[0]+x[1]*y[1]+x[2]*y[2]) ! 23: #define VectorSubtract(a,b,c) {c[0]=a[0]-b[0];c[1]=a[1]-b[1];c[2]=a[2]-b[2];} ! 24: #define VectorAdd(a,b,c) {c[0]=a[0]+b[0];c[1]=a[1]+b[1];c[2]=a[2]+b[2];} ! 25: #define VectorCopy(a,b) {b[0]=a[0];b[1]=a[1];b[2]=a[2];} ! 26: ! 27: void VectorMA (vec3_t veca, float scale, vec3_t vecb, vec3_t vecc); ! 28: ! 29: vec_t _DotProduct (vec3_t v1, vec3_t v2); ! 30: void _VectorSubtract (vec3_t veca, vec3_t vecb, vec3_t out); ! 31: void _VectorAdd (vec3_t veca, vec3_t vecb, vec3_t out); ! 32: void _VectorCopy (vec3_t in, vec3_t out); ! 33: ! 34: int VectorCompare (vec3_t v1, vec3_t v2); ! 35: vec_t Length (vec3_t v); ! 36: void CrossProduct (vec3_t v1, vec3_t v2, vec3_t cross); ! 37: float VectorNormalize (vec3_t v); // returns vector length ! 38: void VectorInverse (vec3_t v); ! 39: void VectorScale (vec3_t in, vec_t scale, vec3_t out); ! 40: int Q_log2(int val); ! 41: ! 42: void R_ConcatRotations (float in1[3][3], float in2[3][3], float out[3][3]); ! 43: void R_ConcatTransforms (float in1[3][4], float in2[3][4], float out[3][4]); ! 44: ! 45: void FloorDivMod (double numer, double denom, int *quotient, ! 46: int *rem); ! 47: fixed16_t Invert24To16(fixed16_t val); ! 48: int GreatestCommonDivisor (int i1, int i2); ! 49: ! 50: void AngleVectors (vec3_t angles, vec3_t forward, vec3_t right, vec3_t up); ! 51: int BoxOnPlaneSide (vec3_t emins, vec3_t emaxs, struct mplane_s *plane); ! 52: float anglemod(float a); ! 53: ! 54: ! 55: ! 56: #define BOX_ON_PLANE_SIDE(emins, emaxs, p) \ ! 57: (((p)->type < 3)? \ ! 58: ( \ ! 59: ((p)->dist <= (emins)[(p)->type])? \ ! 60: 1 \ ! 61: : \ ! 62: ( \ ! 63: ((p)->dist >= (emaxs)[(p)->type])?\ ! 64: 2 \ ! 65: : \ ! 66: 3 \ ! 67: ) \ ! 68: ) \ ! 69: : \ ! 70: BoxOnPlaneSide( (emins), (emaxs), (p)))
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