1 |
gwlarson |
3.14 |
/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
2 |
gregl |
3.1 |
|
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 |
gwlarson |
3.13 |
VIEW v; /* base view parameters */ |
14 |
|
|
int hres, vres; /* base view resolution */ |
15 |
gregl |
3.1 |
int ifd; /* input file descriptor (for select) */ |
16 |
|
|
} odev; /* our open device */ |
17 |
|
|
|
18 |
gregl |
3.11 |
extern int imm_mode; /* bundles are being delivered immediately */ |
19 |
|
|
|
20 |
gwlarson |
3.14 |
extern double eyesepdist; /* world eye separation distance */ |
21 |
|
|
|
22 |
gregl |
3.8 |
/* user commands */ |
23 |
gwlarson |
3.13 |
#define DC_SETVIEW 0 /* set the base view */ |
24 |
|
|
#define DC_GETVIEW 1 /* print the current base view */ |
25 |
gregl |
3.8 |
#define DC_LASTVIEW 2 /* restore previous view */ |
26 |
|
|
#define DC_PAUSE 3 /* pause the current calculation */ |
27 |
|
|
#define DC_RESUME 4 /* resume the calculation */ |
28 |
gregl |
3.9 |
#define DC_REDRAW 5 /* redraw from server */ |
29 |
|
|
#define DC_KILL 6 /* kill rtrace process(es) */ |
30 |
|
|
#define DC_RESTART 7 /* restart rtrace process(es) */ |
31 |
|
|
#define DC_CLOBBER 8 /* clobber holodeck file */ |
32 |
|
|
#define DC_QUIT 9 /* quit the program */ |
33 |
gregl |
3.1 |
|
34 |
gregl |
3.9 |
#define DC_NCMDS 10 /* number of commands */ |
35 |
gregl |
3.1 |
|
36 |
gregl |
3.8 |
/* dev_input() returns flags from above */ |
37 |
|
|
#define DFL(dc) (1<<(dc)) |
38 |
|
|
|
39 |
|
|
#define CTRL(c) ((c)-'@') |
40 |
|
|
/* commands entered in display window */ |
41 |
gregl |
3.10 |
#define DV_INIT {'\0','v','l','p','\r',CTRL('L'),'K','R','C','q'} |
42 |
gregl |
3.8 |
/* commands entered on stdin */ |
43 |
|
|
#define DC_INIT {"VIEW=","where","last","pause","resume","redraw",\ |
44 |
gregl |
3.9 |
"kill","restart","clobber","quit"} |
45 |
gregl |
3.8 |
|
46 |
|
|
|
47 |
gregl |
3.1 |
/************************************************************************ |
48 |
|
|
* Driver routines (all are required): |
49 |
|
|
|
50 |
|
|
|
51 |
|
|
void |
52 |
|
|
dev_open(nm) : prepare the device |
53 |
|
|
char *nm; : appropriate title bar annotation |
54 |
|
|
|
55 |
|
|
Sets fields of odev structure and prepares the display for i/o. |
56 |
gwlarson |
3.13 |
The base view type, horizontal and vertical view angles and other |
57 |
|
|
default parameters in odev.v should also be assigned. |
58 |
gregl |
3.1 |
|
59 |
|
|
|
60 |
gregl |
3.7 |
int |
61 |
gwlarson |
3.13 |
dev_view(nv) : set base view parameters |
62 |
gregl |
3.1 |
VIEW *nv; : the new view |
63 |
|
|
|
64 |
gwlarson |
3.13 |
Updates the display for the given base view change. |
65 |
gregl |
3.1 |
Look for nv==&odev.v when making view current after dev_input() |
66 |
gregl |
3.7 |
returns DEV_NEWVIEW flag. Return 1 on success, or 0 if the |
67 |
|
|
new view would conflict with device requirements. In the latter |
68 |
|
|
case, reset parameters in nv to make it more agreeable, calling |
69 |
|
|
error(COMMAND, "appropriate user warning"). |
70 |
gregl |
3.1 |
|
71 |
|
|
|
72 |
|
|
void |
73 |
gregl |
3.12 |
dev_clear() : clear device memory |
74 |
|
|
|
75 |
|
|
Clear the device memory in preparation for fresh data. Clearing |
76 |
|
|
the screen is optional. |
77 |
|
|
|
78 |
|
|
|
79 |
|
|
void |
80 |
gregl |
3.5 |
dev_value(c, p, v) : register new point of light |
81 |
gregl |
3.1 |
COLR c; : pixel color (RGBE) |
82 |
|
|
FVECT p; : world intersection point |
83 |
gregl |
3.5 |
FVECT v; : ray direction vector |
84 |
gregl |
3.1 |
|
85 |
gregl |
3.11 |
Add the given color point to the display output queue. If imm_mode is |
86 |
|
|
non-zero, then values are being sent in rapid succession. |
87 |
gregl |
3.1 |
|
88 |
|
|
|
89 |
|
|
int |
90 |
|
|
dev_flush() : flush the output and prepare for select call |
91 |
|
|
|
92 |
|
|
Updates display, taking any pending action required before select(2) call. |
93 |
|
|
Returns non-zero if there is device input available. |
94 |
|
|
|
95 |
|
|
|
96 |
|
|
int |
97 |
|
|
dev_input() : process pending display input |
98 |
|
|
|
99 |
|
|
Called when odev struct file descriptor shows input is ready. |
100 |
|
|
Returns flags indicating actions to take in the control process. |
101 |
gregl |
3.8 |
If the DC_VIEW or DC_RESIZE flag is returned, the odev |
102 |
gregl |
3.1 |
structure must be updated beforehand. |
103 |
gwlarson |
3.14 |
|
104 |
|
|
void |
105 |
|
|
dev_auxcom(cmd, args) : process auxiliary command |
106 |
|
|
char *cmd, *args; : command name and argument string |
107 |
|
|
|
108 |
|
|
Execute an auxiliary command (not one of those listed at the head of |
109 |
|
|
this file). The cmd argument points to the command name itself, and |
110 |
|
|
the args argument points to a string with the rest of the input line. |
111 |
|
|
If the command isn't known or there ARE no auxiliary commands, print |
112 |
|
|
an appropriate COMMAND error message and return. |
113 |
gregl |
3.1 |
|
114 |
|
|
|
115 |
gwlarson |
3.13 |
VIEW * |
116 |
|
|
dev_auxview(n, hv) : return nth auxiliary view |
117 |
|
|
int n; : auxiliary view number |
118 |
|
|
int hv[2]; : returned horiz. and vert. image resolution |
119 |
|
|
|
120 |
|
|
Return the nth auxiliary view associated with the current base view. |
121 |
|
|
The hv entries are assigned the horizontal and vertical view resolution, |
122 |
|
|
respectively. Function returns NULL if there are no more auxiliary |
123 |
|
|
views. The zeroeth auxiliary view is the base view itself. |
124 |
|
|
|
125 |
|
|
|
126 |
gregl |
3.1 |
void |
127 |
|
|
dev_close() : close the display |
128 |
|
|
|
129 |
|
|
Close the display device and free up resources in preparation for exit. |
130 |
|
|
Set odev.v.type=0 and odev.hres=odev.vres=0 when done. |
131 |
|
|
|
132 |
|
|
|
133 |
|
|
************************************************************************/ |
134 |
gwlarson |
3.13 |
|
135 |
|
|
|
136 |
|
|
extern VIEW *dev_auxview(); |