15 |
|
int ifd; /* input file descriptor (for select) */ |
16 |
|
} odev; /* our open device */ |
17 |
|
|
18 |
< |
/* dev_input() return flags */ |
19 |
< |
#define DEV_SHUTDOWN 01 /* user shutdown request */ |
20 |
< |
#define DEV_NEWVIEW 02 /* view change (new view in odev.v) */ |
21 |
< |
#define DEV_NEWSIZE 04 /* device resolution change */ |
22 |
< |
#define DEV_WAIT 010 /* pause computation and wait for input */ |
18 |
> |
extern int imm_mode; /* bundles are being delivered immediately */ |
19 |
|
|
20 |
+ |
/* user commands */ |
21 |
+ |
#define DC_SETVIEW 0 /* set the view */ |
22 |
+ |
#define DC_GETVIEW 1 /* print the current view */ |
23 |
+ |
#define DC_LASTVIEW 2 /* restore previous view */ |
24 |
+ |
#define DC_PAUSE 3 /* pause the current calculation */ |
25 |
+ |
#define DC_RESUME 4 /* resume the calculation */ |
26 |
+ |
#define DC_REDRAW 5 /* redraw from server */ |
27 |
+ |
#define DC_KILL 6 /* kill rtrace process(es) */ |
28 |
+ |
#define DC_RESTART 7 /* restart rtrace process(es) */ |
29 |
+ |
#define DC_CLOBBER 8 /* clobber holodeck file */ |
30 |
+ |
#define DC_QUIT 9 /* quit the program */ |
31 |
|
|
32 |
+ |
#define DC_NCMDS 10 /* number of commands */ |
33 |
+ |
|
34 |
+ |
/* dev_input() returns flags from above */ |
35 |
+ |
#define DFL(dc) (1<<(dc)) |
36 |
+ |
|
37 |
+ |
#define CTRL(c) ((c)-'@') |
38 |
+ |
/* commands entered in display window */ |
39 |
+ |
#define DV_INIT {'\0','v','l','p','\r',CTRL('L'),'K','R','C','q'} |
40 |
+ |
/* commands entered on stdin */ |
41 |
+ |
#define DC_INIT {"VIEW=","where","last","pause","resume","redraw",\ |
42 |
+ |
"kill","restart","clobber","quit"} |
43 |
+ |
|
44 |
+ |
|
45 |
|
/************************************************************************ |
46 |
|
* Driver routines (all are required): |
47 |
|
|
55 |
|
parameters in odev.v should also be assigned. |
56 |
|
|
57 |
|
|
58 |
< |
void |
58 |
> |
int |
59 |
|
dev_view(nv) : set display view parameters |
60 |
|
VIEW *nv; : the new view |
61 |
|
|
62 |
|
Updates the display for the given view change. |
63 |
|
Look for nv==&odev.v when making view current after dev_input() |
64 |
< |
returns DEV_NEWVIEW flag. |
64 |
> |
returns DEV_NEWVIEW flag. Return 1 on success, or 0 if the |
65 |
> |
new view would conflict with device requirements. In the latter |
66 |
> |
case, reset parameters in nv to make it more agreeable, calling |
67 |
> |
error(COMMAND, "appropriate user warning"). |
68 |
|
|
69 |
|
|
70 |
|
void |
71 |
< |
dev_value(c, p) : register new point of light |
71 |
> |
dev_clear() : clear device memory |
72 |
> |
|
73 |
> |
Clear the device memory in preparation for fresh data. Clearing |
74 |
> |
the screen is optional. |
75 |
> |
|
76 |
> |
|
77 |
> |
void |
78 |
> |
dev_value(c, p, v) : register new point of light |
79 |
|
COLR c; : pixel color (RGBE) |
80 |
|
FVECT p; : world intersection point |
81 |
+ |
FVECT v; : ray direction vector |
82 |
|
|
83 |
< |
Add the given color point to the display output queue. |
83 |
> |
Add the given color point to the display output queue. If imm_mode is |
84 |
> |
non-zero, then values are being sent in rapid succession. |
85 |
|
|
86 |
|
|
87 |
|
int |
96 |
|
|
97 |
|
Called when odev struct file descriptor shows input is ready. |
98 |
|
Returns flags indicating actions to take in the control process. |
99 |
< |
If the DEV_NEWVIEW or DEV_NEWSIZE flag is returned, the odev |
99 |
> |
If the DC_VIEW or DC_RESIZE flag is returned, the odev |
100 |
|
structure must be updated beforehand. |
101 |
|
|
102 |
|
|