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https://git.code.sf.net/p/quake/quakeforge
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32 lines
902 B
C
32 lines
902 B
C
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#ifndef __MATHLIB__
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#define __MATHLIB__
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#include "cmdlib.h"
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// mathlib.h
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typedef float vec_t;
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typedef vec_t vec3_t[3];
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extern vec3_t vec3_origin;
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boolean VectorCompare (vec3_t v1, vec3_t v2);
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#define DotProduct(x,y) (x[0]*y[0]+x[1]*y[1]+x[2]*y[2])
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#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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#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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#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);
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void _VectorSubtract (vec3_t va, vec3_t vb, vec3_t out);
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void _VectorAdd (vec3_t va, vec3_t vb, vec3_t out);
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void _VectorCopy (vec3_t in, vec3_t out);
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void CrossProduct (vec3_t v1, vec3_t v2, vec3_t cross);
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void VectorNormalize (vec3_t v);
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void VectorScale (vec3_t v, vec_t scale, vec3_t out);
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double VectorLength(vec3_t v);
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void VectorMA (vec3_t va, double scale, vec3_t vb, vec3_t vc);
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#endif
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