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root/radiance/ray/src/common/fvect.h
Revision: 2.6
Committed: Wed Aug 12 17:56:51 1998 UTC (25 years, 8 months ago) by gwlarson
Content type: text/plain
Branch: MAIN
Changes since 2.5: +12 -2 lines
Log Message: 
added VSUB(), VADD() and VCROSS() macros

File Contents

# User Rev Content
1 gwlarson 2.6 /* Copyright (c) 1998 Silicon Graphics, Inc. */
2 greg 1.1
3 gwlarson 2.6 /* SCCSid "$SunId$ SGI" */
4 greg 1.1
5 greg 1.3 #ifdef SMLFLT
6 greg 1.2 #define FLOAT float
7 greg 2.3 #define FTINY (1e-3)
8 greg 1.2 #else
9     #define FLOAT double
10 greg 1.3 #define FTINY (1e-6)
11 greg 1.2 #endif
12 greg 1.3 #define FHUGE (1e10)
13 greg 1.1
14 greg 1.2 typedef FLOAT FVECT[3];
15    
16 greg 1.1 #define VCOPY(v1,v2) ((v1)[0]=(v2)[0],(v1)[1]=(v2)[1],(v1)[2]=(v2)[2])
17     #define DOT(v1,v2) ((v1)[0]*(v2)[0]+(v1)[1]*(v2)[1]+(v1)[2]*(v2)[2])
18 gregl 2.5 #define VLEN(v) sqrt(DOT(v,v))
19 gwlarson 2.6 #define VADD(vr,v1,v2) ((vr)[0]=(v1)[0]+(v2)[0], \
20     (vr)[1]=(v1)[1]+(v2)[1], \
21     (vr)[2]=(v1)[2]+(v2)[2])
22     #define VSUB(vr,v1,v2) ((vr)[0]=(v1)[0]-(v2)[0], \
23     (vr)[1]=(v1)[1]-(v2)[1], \
24     (vr)[2]=(v1)[2]-(v2)[2])
25 greg 1.2 #define VSUM(vr,v1,v2,f) ((vr)[0]=(v1)[0]+(f)*(v2)[0], \
26     (vr)[1]=(v1)[1]+(f)*(v2)[1], \
27     (vr)[2]=(v1)[2]+(f)*(v2)[2])
28 gwlarson 2.6 #define VCROSS(vr,v1,v2) \
29     ((vr)[0]=(v1)[1]*(v2)[2]-(v1)[2]*(v2)[1], \
30     (vr)[1]=(v1)[2]*(v2)[0]-(v1)[0]*(v2)[2], \
31     (vr)[2]=(v1)[0]*(v2)[1]-(v1)[1]*(v2)[0])
32 greg 1.1
33 greg 2.4 extern double fdot(), dist2(), dist2lseg(), dist2line(), normalize();