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root/radiance/ray/src/hd/rhdisp.h
Revision: 3.16
Committed: Thu Jan 1 11:21:55 2004 UTC (20 years, 3 months ago) by schorsch
Content type: text/plain
Branch: MAIN
CVS Tags: rad3R7P2, rad3R7P1, rad4R0, rad3R6, rad3R6P1, rad3R8, rad3R9
Changes since 3.15: +18 -1 lines
Log Message:
Ansification and prototypes.

File Contents

# Content
1 /* RCSid: $Id: rhdisp.h,v 3.15 2003/07/14 22:24:00 schorsch Exp $ */
2 /*
3 * Header for holodeck display drivers.
4 */
5 #ifndef _RAD_RHDISP_H_
6 #define _RAD_RHDISP_H_
7
8 #include "color.h"
9
10 #ifdef __cplusplus
11 extern "C" {
12 #endif
13
14 /* display requests */
15 #define DR_NOOP 0 /* to release from vain DR_ATTEN */
16 #define DR_BUNDLE 1 /* lone bundle request */
17 #define DR_ATTEN 2 /* request for attention */
18 #define DR_SHUTDOWN 3 /* shutdown request */
19 #define DR_NEWSET 4 /* new bundle set */
20 #define DR_ADDSET 5 /* add to current set */
21 #define DR_ADJSET 6 /* adjust set quantities */
22 #define DR_DELSET 7 /* delete from current set */
23 #define DR_KILL 8 /* kill rtrace process(es) */
24 #define DR_RESTART 9 /* restart rtrace */
25 #define DR_CLOBBER 10 /* clobber holodeck */
26 #define DR_VIEWPOINT 11 /* set desired eye position */
27
28 /* server responses */
29 #define DS_BUNDLE 32 /* computed bundle */
30 #define DS_ACKNOW 33 /* acknowledge request for attention */
31 #define DS_SHUTDOWN 34 /* end process and close connection */
32 #define DS_ADDHOLO 35 /* register new holodeck */
33 #define DS_STARTIMM 36 /* begin immediate bundle set */
34 #define DS_ENDIMM 37 /* end immediate bundle set */
35 #define DS_OUTSECT 38 /* render from outside sections */
36 #define DS_EYESEP 39 /* eye separation distance */
37
38 /*
39 * Normally, the server channel has priority, with the display process
40 * checking it frequently for new data. However, when the display process
41 * makes a request for attention (DR_ATTEN), the server will finish its
42 * current operations and flush its buffers, sending an acknowledge
43 * message (DS_ACKNOW) when it's done. This then allows the
44 * display process to send a long request to the holodeck server.
45 * Priority returns to normal after the following request.
46 */
47
48 #ifndef BIGREQSIZ
49 #define BIGREQSIZ 512 /* big request size (bytes) */
50 #endif
51
52 typedef struct {
53 int16 type; /* message type */
54 int32 nbytes; /* number of additional bytes */
55 } MSGHEAD; /* message head */
56
57 /*
58 * The display process is started with three arguments. The first argument
59 * is the short name of the holodeck file, appropriate for window naming, etc.
60 * The second and third arguments are the file descriptor numbers assigned to
61 * the server's standard output and input, respectively. The stdin and stdout
62 * of the display process are used for normal communication with the server,
63 * and are connected to pipes going each way. It is entirely appropriate
64 * for the display process to borrow the server's stdin and stdout for reading
65 * and writing user commands from the list in rhdriver.h. If standard input
66 * is not available for reading, then a descriptor of -1 will be passed.
67 * The standard output will always be available for writing, though it
68 * may go to /dev/null.
69 */
70
71
72 /* rhdisp.c */
73 extern void serv_request(int type, int nbytes, char *p);
74 extern int serv_result(void);
75 /* rhdisp2.c */
76 extern int beam_sync(int all);
77 extern void beam_init(int fresh);
78 //extern int16 * beam_view(VIEW *vn, int hr, int vr);
79 /* rhdisp2.c, rhdisp3.c */
80 extern void gridlines(void (*f)(FVECT wp[2]));
81 /* rhd_ctab.c */
82 extern int new_ctab(int ncolors);
83 extern int get_pixel(BYTE rgb[3], void (*set_pixel)(int h, int r, int g, int b));
84
85
86 #ifdef __cplusplus
87 }
88 #endif
89 #endif /* _RAD_RHDISP_H_ */
90