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root/radiance/ray/src/common/view.h
Revision: 2.17
Committed: Tue Jan 18 00:33:16 2005 UTC (19 years, 2 months ago) by greg
Content type: text/plain
Branch: MAIN
CVS Tags: rad3R7P2, rad3R7P1, rad3R8
Changes since 2.16: +3 -2 lines
Log Message:
Added -pd option for depth-of-field sampling and -vd focal distance entry

File Contents

# Content
1 /* RCSid $Id: view.h,v 2.16 2004/06/08 19:48:29 greg Exp $ */
2 /*
3 * view.h - header file for image generation.
4 *
5 * Include after stdio.h and rtmath.h
6 * Includes resolu.h
7 */
8 #ifndef _RAD_VIEW_H_
9 #define _RAD_VIEW_H_
10
11 #include "resolu.h"
12
13 #ifdef __cplusplus
14 extern "C" {
15 #endif
16
17 /* view types */
18 #define VT_PER 'v' /* perspective */
19 #define VT_PAR 'l' /* parallel */
20 #define VT_ANG 'a' /* angular fisheye */
21 #define VT_HEM 'h' /* hemispherical fisheye */
22 #define VT_CYL 'c' /* cylindrical panorama */
23
24 typedef struct {
25 int type; /* view type */
26 FVECT vp; /* view origin */
27 FVECT vdir; /* view direction */
28 FVECT vup; /* view up */
29 double vdist; /* view distance */
30 double horiz; /* horizontal view size */
31 double vert; /* vertical view size */
32 double hoff; /* horizontal image offset */
33 double voff; /* vertical image offset */
34 double vfore; /* fore clipping plane */
35 double vaft; /* aft clipping plane (<=0 for inf) */
36 FVECT hvec; /* computed horizontal image vector */
37 FVECT vvec; /* computed vertical image vector */
38 double hn2; /* DOT(hvec,hvec) */
39 double vn2; /* DOT(vvec,vvec) */
40 } VIEW; /* view parameters */
41
42 extern VIEW stdview;
43
44 #define viewaspect(v) sqrt((v)->vn2/(v)->hn2)
45
46 #define STDVIEW {VT_PER,{0.,0.,0.},{0.,1.,0.},{0.,0.,1.}, \
47 1.,45.,45.,0.,0.,0.,0., \
48 {0.,0.,0.},{0.,0.,0.},0.,0.}
49
50 #define VIEWSTR "VIEW="
51 #define VIEWSTRL 5
52
53
54 extern char *setview(VIEW *v);
55 extern void normaspect(double va, double *ap, int *xp, int *yp);
56 extern double viewray(FVECT orig, FVECT direc, VIEW *v, double x, double y);
57 extern void viewloc(FVECT ip, VIEW *v, FVECT p);
58 extern void pix2loc(RREAL loc[2], RESOLU *rp, int px, int py);
59 extern void loc2pix(int pp[2], RESOLU *rp, double lx, double ly);
60 extern int getviewopt(VIEW *v, int ac, char *av[]);
61 extern int sscanview(VIEW *vp, char *s);
62 extern void fprintview(VIEW *vp, FILE *fp);
63 extern char *viewopt(VIEW *vp);
64 extern int isview(char *s);
65 extern int viewfile(char *fname, VIEW *vp, RESOLU *rp);
66
67
68 #ifdef __cplusplus
69 }
70 #endif
71 #endif /* _RAD_VIEW_H_ */
72