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 */ |
23 |
< |
#define DEV_RESUME 020 /* resume after pause */ |
24 |
< |
#define DEV_REDRAW 040 /* redraw from server */ |
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_QUIT 6 /* quit the program */ |
26 |
|
|
27 |
+ |
#define DC_NCMDS 7 /* number of commands */ |
28 |
|
|
29 |
+ |
/* dev_input() returns flags from above */ |
30 |
+ |
#define DFL(dc) (1<<(dc)) |
31 |
+ |
|
32 |
+ |
#define CTRL(c) ((c)-'@') |
33 |
+ |
/* commands entered in display window */ |
34 |
+ |
#define DV_INIT {'\0','v','l','p','\r',CTRL('R'),'q'} |
35 |
+ |
/* commands entered on stdin */ |
36 |
+ |
#define DC_INIT {"VIEW=","where","last","pause","resume","redraw",\ |
37 |
+ |
"quit"} |
38 |
+ |
|
39 |
+ |
|
40 |
|
/************************************************************************ |
41 |
|
* Driver routines (all are required): |
42 |
|
|
50 |
|
parameters in odev.v should also be assigned. |
51 |
|
|
52 |
|
|
53 |
< |
void |
53 |
> |
int |
54 |
|
dev_view(nv) : set display view parameters |
55 |
|
VIEW *nv; : the new view |
56 |
|
|
57 |
|
Updates the display for the given view change. |
58 |
|
Look for nv==&odev.v when making view current after dev_input() |
59 |
< |
returns DEV_NEWVIEW flag. |
59 |
> |
returns DEV_NEWVIEW flag. Return 1 on success, or 0 if the |
60 |
> |
new view would conflict with device requirements. In the latter |
61 |
> |
case, reset parameters in nv to make it more agreeable, calling |
62 |
> |
error(COMMAND, "appropriate user warning"). |
63 |
|
|
64 |
|
|
65 |
|
void |
66 |
< |
dev_value(c, p) : register new point of light |
66 |
> |
dev_value(c, p, v) : register new point of light |
67 |
|
COLR c; : pixel color (RGBE) |
68 |
|
FVECT p; : world intersection point |
69 |
+ |
FVECT v; : ray direction vector |
70 |
|
|
71 |
|
Add the given color point to the display output queue. |
72 |
|
|
83 |
|
|
84 |
|
Called when odev struct file descriptor shows input is ready. |
85 |
|
Returns flags indicating actions to take in the control process. |
86 |
< |
If the DEV_NEWVIEW or DEV_NEWSIZE flag is returned, the odev |
86 |
> |
If the DC_VIEW or DC_RESIZE flag is returned, the odev |
87 |
|
structure must be updated beforehand. |
88 |
|
|
89 |
|
|