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root/radiance/ray/src/common/view.h
Revision: 2.16
Committed: Tue Jun 8 19:48:29 2004 UTC (19 years, 9 months ago) by greg
Content type: text/plain
Branch: MAIN
CVS Tags: rad3R6, rad3R6P1
Changes since 2.15: +2 -5 lines
Log Message:
Removed redundant #include's and fixed ordering on some headers

File Contents

# Content
1 /* RCSid $Id: view.h,v 2.15 2003/10/27 10:19:31 schorsch 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 horiz; /* horizontal view size */
30 double vert; /* vertical view size */
31 double hoff; /* horizontal image offset */
32 double voff; /* vertical image offset */
33 double vfore; /* fore clipping plane */
34 double vaft; /* aft clipping plane (<=0 for inf) */
35 FVECT hvec; /* computed horizontal image vector */
36 FVECT vvec; /* computed vertical image vector */
37 double hn2; /* DOT(hvec,hvec) */
38 double vn2; /* DOT(vvec,vvec) */
39 } VIEW; /* view parameters */
40
41 extern VIEW stdview;
42
43 #define viewaspect(v) sqrt((v)->vn2/(v)->hn2)
44
45 #define STDVIEW {VT_PER,{0.,0.,0.},{0.,1.,0.},{0.,0.,1.}, \
46 45.,45.,0.,0.,0.,0., \
47 {0.,0.,0.},{0.,0.,0.},0.,0.}
48
49 #define VIEWSTR "VIEW="
50 #define VIEWSTRL 5
51
52
53 extern char *setview(VIEW *v);
54 extern void normaspect(double va, double *ap, int *xp, int *yp);
55 extern double viewray(FVECT orig, FVECT direc, VIEW *v, double x, double y);
56 extern void viewloc(FVECT ip, VIEW *v, FVECT p);
57 extern void pix2loc(RREAL loc[2], RESOLU *rp, int px, int py);
58 extern void loc2pix(int pp[2], RESOLU *rp, double lx, double ly);
59 extern int getviewopt(VIEW *v, int ac, char *av[]);
60 extern int sscanview(VIEW *vp, char *s);
61 extern void fprintview(VIEW *vp, FILE *fp);
62 extern char *viewopt(VIEW *vp);
63 extern int isview(char *s);
64 extern int viewfile(char *fname, VIEW *vp, RESOLU *rp);
65
66
67 #ifdef __cplusplus
68 }
69 #endif
70 #endif /* _RAD_VIEW_H_ */
71