quakeforge/tools/Forge/Bundles/MapEdit/mathlib.h

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#ifndef __MATHLIB__
#define __MATHLIB__
#include "cmdlib.h"
// mathlib.h
typedef float vec_t;
typedef vec_t vec3_t[3];
extern vec3_t vec3_origin;
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boolean VectorCompare (vec3_t v1, vec3_t v2);
#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];}
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vec_t _DotProduct (vec3_t v1, vec3_t v2);
void _VectorSubtract (vec3_t va, vec3_t vb, vec3_t out);
void _VectorAdd (vec3_t va, vec3_t vb, vec3_t out);
void _VectorCopy (vec3_t in, vec3_t out);
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void CrossProduct (vec3_t v1, vec3_t v2, vec3_t cross);
void VectorNormalize (vec3_t v);
void VectorScale (vec3_t v, vec_t scale, vec3_t out);
double VectorLength (vec3_t v);
void VectorMA (vec3_t va, double scale, vec3_t vb, vec3_t vc);
#endif