| 1 |
greg |
2.14 |
/* RCSid $Id: fvect.h,v 2.13 2011/02/18 00:40:25 greg Exp $ */ |
| 2 |
greg |
2.7 |
/* |
| 3 |
|
|
* Declarations for floating-point vector operations. |
| 4 |
|
|
*/ |
| 5 |
schorsch |
2.9 |
#ifndef _RAD_FVECT_H_ |
| 6 |
|
|
#define _RAD_FVECT_H_ |
| 7 |
|
|
#ifdef __cplusplus |
| 8 |
|
|
extern "C" { |
| 9 |
|
|
#endif |
| 10 |
greg |
1.1 |
|
| 11 |
greg |
1.3 |
#ifdef SMLFLT |
| 12 |
schorsch |
2.10 |
#define RREAL float |
| 13 |
greg |
2.3 |
#define FTINY (1e-3) |
| 14 |
greg |
1.2 |
#else |
| 15 |
schorsch |
2.10 |
#define RREAL double |
| 16 |
greg |
1.3 |
#define FTINY (1e-6) |
| 17 |
greg |
1.2 |
#endif |
| 18 |
greg |
1.3 |
#define FHUGE (1e10) |
| 19 |
greg |
1.1 |
|
| 20 |
schorsch |
2.10 |
typedef RREAL FVECT[3]; |
| 21 |
greg |
1.2 |
|
| 22 |
greg |
1.1 |
#define VCOPY(v1,v2) ((v1)[0]=(v2)[0],(v1)[1]=(v2)[1],(v1)[2]=(v2)[2]) |
| 23 |
|
|
#define DOT(v1,v2) ((v1)[0]*(v2)[0]+(v1)[1]*(v2)[1]+(v1)[2]*(v2)[2]) |
| 24 |
gregl |
2.5 |
#define VLEN(v) sqrt(DOT(v,v)) |
| 25 |
gwlarson |
2.6 |
#define VADD(vr,v1,v2) ((vr)[0]=(v1)[0]+(v2)[0], \ |
| 26 |
|
|
(vr)[1]=(v1)[1]+(v2)[1], \ |
| 27 |
|
|
(vr)[2]=(v1)[2]+(v2)[2]) |
| 28 |
|
|
#define VSUB(vr,v1,v2) ((vr)[0]=(v1)[0]-(v2)[0], \ |
| 29 |
|
|
(vr)[1]=(v1)[1]-(v2)[1], \ |
| 30 |
|
|
(vr)[2]=(v1)[2]-(v2)[2]) |
| 31 |
greg |
1.2 |
#define VSUM(vr,v1,v2,f) ((vr)[0]=(v1)[0]+(f)*(v2)[0], \ |
| 32 |
|
|
(vr)[1]=(v1)[1]+(f)*(v2)[1], \ |
| 33 |
|
|
(vr)[2]=(v1)[2]+(f)*(v2)[2]) |
| 34 |
gwlarson |
2.6 |
#define VCROSS(vr,v1,v2) \ |
| 35 |
|
|
((vr)[0]=(v1)[1]*(v2)[2]-(v1)[2]*(v2)[1], \ |
| 36 |
|
|
(vr)[1]=(v1)[2]*(v2)[0]-(v1)[0]*(v2)[2], \ |
| 37 |
|
|
(vr)[2]=(v1)[0]*(v2)[1]-(v1)[1]*(v2)[0]) |
| 38 |
greg |
1.1 |
|
| 39 |
greg |
2.14 |
#define GEOD_RAD 0 /* geodesic distance specified in radians */ |
| 40 |
|
|
#define GEOD_ABS 1 /* absolute geodesic distance */ |
| 41 |
|
|
#define GEOD_REL 2 /* relative geodesic distance */ |
| 42 |
greg |
2.7 |
|
| 43 |
greg |
2.13 |
extern double fdot(const FVECT v1, const FVECT v2); |
| 44 |
|
|
extern double dist2(const FVECT v1, const FVECT v2); |
| 45 |
|
|
extern double dist2line(const FVECT p, const FVECT ep1, const FVECT ep2); |
| 46 |
|
|
extern double dist2lseg(const FVECT p, const FVECT ep1, const FVECT ep2); |
| 47 |
|
|
extern void fcross(FVECT vres, const FVECT v1, const FVECT v2); |
| 48 |
|
|
extern void fvsum(FVECT vres, const FVECT v0, const FVECT v1, double f); |
| 49 |
greg |
2.7 |
extern double normalize(FVECT v); |
| 50 |
greg |
2.13 |
extern int closestapproach(RREAL t[2], |
| 51 |
|
|
const FVECT rorg0, const FVECT rdir0, |
| 52 |
|
|
const FVECT rorg1, const FVECT rdir1); |
| 53 |
|
|
extern void spinvector(FVECT vres, const FVECT vorig, |
| 54 |
|
|
const FVECT vnorm, double theta); |
| 55 |
greg |
2.14 |
extern double geodesic(FVECT vres, const FVECT vorig, |
| 56 |
|
|
const FVECT vtarg, double t, int meas); |
| 57 |
schorsch |
2.9 |
#ifdef __cplusplus |
| 58 |
|
|
} |
| 59 |
greg |
2.7 |
#endif |
| 60 |
schorsch |
2.9 |
#endif /* _RAD_FVECT_H_ */ |
| 61 |
|
|
|
