ViewVC Help
View File | Revision Log | Show Annotations | Download File | Root Listing
root/radiance/ray/src/hd/rhdriver.h
Revision: 3.10
Committed: Sun Dec 14 09:45:48 1997 UTC (26 years, 3 months ago) by gregl
Content type: text/plain
Branch: MAIN
Changes since 3.9: +1 -1 lines
Log Message:
fixed wrong character command

File Contents

# Content
1 /* Copyright (c) 1997 Silicon Graphics, Inc. */
2
3 /* SCCSid "$SunId$ SGI" */
4
5 /*
6 * Header file for holodeck device driver routines.
7 */
8
9 #include "view.h"
10
11 extern struct driver {
12 char *name; /* holodeck name or title */
13 VIEW v; /* preferred view parameters */
14 int hres, vres; /* device resolution */
15 int ifd; /* input file descriptor (for select) */
16 } odev; /* our open device */
17
18 /* user commands */
19 #define DC_SETVIEW 0 /* set the view */
20 #define DC_GETVIEW 1 /* print the current view */
21 #define DC_LASTVIEW 2 /* restore previous view */
22 #define DC_PAUSE 3 /* pause the current calculation */
23 #define DC_RESUME 4 /* resume the calculation */
24 #define DC_REDRAW 5 /* redraw from server */
25 #define DC_KILL 6 /* kill rtrace process(es) */
26 #define DC_RESTART 7 /* restart rtrace process(es) */
27 #define DC_CLOBBER 8 /* clobber holodeck file */
28 #define DC_QUIT 9 /* quit the program */
29
30 #define DC_NCMDS 10 /* number of commands */
31
32 /* dev_input() returns flags from above */
33 #define DFL(dc) (1<<(dc))
34
35 #define CTRL(c) ((c)-'@')
36 /* commands entered in display window */
37 #define DV_INIT {'\0','v','l','p','\r',CTRL('L'),'K','R','C','q'}
38 /* commands entered on stdin */
39 #define DC_INIT {"VIEW=","where","last","pause","resume","redraw",\
40 "kill","restart","clobber","quit"}
41
42
43 /************************************************************************
44 * Driver routines (all are required):
45
46
47 void
48 dev_open(nm) : prepare the device
49 char *nm; : appropriate title bar annotation
50
51 Sets fields of odev structure and prepares the display for i/o.
52 The view type, horizontal and vertical view angles and other default
53 parameters in odev.v should also be assigned.
54
55
56 int
57 dev_view(nv) : set display view parameters
58 VIEW *nv; : the new view
59
60 Updates the display for the given view change.
61 Look for nv==&odev.v when making view current after dev_input()
62 returns DEV_NEWVIEW flag. Return 1 on success, or 0 if the
63 new view would conflict with device requirements. In the latter
64 case, reset parameters in nv to make it more agreeable, calling
65 error(COMMAND, "appropriate user warning").
66
67
68 void
69 dev_value(c, p, v) : register new point of light
70 COLR c; : pixel color (RGBE)
71 FVECT p; : world intersection point
72 FVECT v; : ray direction vector
73
74 Add the given color point to the display output queue.
75
76
77 int
78 dev_flush() : flush the output and prepare for select call
79
80 Updates display, taking any pending action required before select(2) call.
81 Returns non-zero if there is device input available.
82
83
84 int
85 dev_input() : process pending display input
86
87 Called when odev struct file descriptor shows input is ready.
88 Returns flags indicating actions to take in the control process.
89 If the DC_VIEW or DC_RESIZE flag is returned, the odev
90 structure must be updated beforehand.
91
92
93 void
94 dev_close() : close the display
95
96 Close the display device and free up resources in preparation for exit.
97 Set odev.v.type=0 and odev.hres=odev.vres=0 when done.
98
99
100 ************************************************************************/