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greg |
2.8 |
/* RCSid $Id$ */ |
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greg |
2.7 |
/* |
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* Declarations for floating-point vector operations. |
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*/ |
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greg |
1.1 |
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greg |
2.8 |
#include "copyright.h" |
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greg |
1.1 |
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greg |
1.3 |
#ifdef SMLFLT |
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greg |
1.2 |
#define FLOAT float |
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greg |
2.3 |
#define FTINY (1e-3) |
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greg |
1.2 |
#else |
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#define FLOAT double |
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greg |
1.3 |
#define FTINY (1e-6) |
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greg |
1.2 |
#endif |
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greg |
1.3 |
#define FHUGE (1e10) |
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greg |
1.1 |
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greg |
1.2 |
typedef FLOAT FVECT[3]; |
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greg |
1.1 |
#define VCOPY(v1,v2) ((v1)[0]=(v2)[0],(v1)[1]=(v2)[1],(v1)[2]=(v2)[2]) |
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#define DOT(v1,v2) ((v1)[0]*(v2)[0]+(v1)[1]*(v2)[1]+(v1)[2]*(v2)[2]) |
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gregl |
2.5 |
#define VLEN(v) sqrt(DOT(v,v)) |
| 22 |
gwlarson |
2.6 |
#define VADD(vr,v1,v2) ((vr)[0]=(v1)[0]+(v2)[0], \ |
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(vr)[1]=(v1)[1]+(v2)[1], \ |
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(vr)[2]=(v1)[2]+(v2)[2]) |
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#define VSUB(vr,v1,v2) ((vr)[0]=(v1)[0]-(v2)[0], \ |
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(vr)[1]=(v1)[1]-(v2)[1], \ |
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(vr)[2]=(v1)[2]-(v2)[2]) |
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greg |
1.2 |
#define VSUM(vr,v1,v2,f) ((vr)[0]=(v1)[0]+(f)*(v2)[0], \ |
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(vr)[1]=(v1)[1]+(f)*(v2)[1], \ |
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(vr)[2]=(v1)[2]+(f)*(v2)[2]) |
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gwlarson |
2.6 |
#define VCROSS(vr,v1,v2) \ |
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((vr)[0]=(v1)[1]*(v2)[2]-(v1)[2]*(v2)[1], \ |
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(vr)[1]=(v1)[2]*(v2)[0]-(v1)[0]*(v2)[2], \ |
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(vr)[2]=(v1)[0]*(v2)[1]-(v1)[1]*(v2)[0]) |
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greg |
1.1 |
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greg |
2.7 |
#ifdef NOPROTO |
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greg |
2.4 |
extern double fdot(), dist2(), dist2lseg(), dist2line(), normalize(); |
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greg |
2.7 |
extern void fcross(), fvsum(), spinvector(); |
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#else |
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extern double fdot(FVECT v1, FVECT v2); |
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extern double dist2(FVECT v1, FVECT v2); |
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extern double dist2line(FVECT p, FVECT ep1, FVECT ep2); |
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extern double dist2lseg(FVECT p, FVECT ep1, FVECT ep2); |
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extern void fcross(FVECT vres, FVECT v1, FVECT v2); |
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extern void fvsum(FVECT vres, FVECT v0, FVECT v1, double f); |
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extern double normalize(FVECT v); |
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extern void spinvector(FVECT vres, FVECT vorig, FVECT vnorm, double theta); |
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#endif |
