| 10 |
|
|
| 11 |
|
extern struct driver { |
| 12 |
|
char *name; /* holodeck name or title */ |
| 13 |
< |
VIEW v; /* preferred view parameters */ |
| 14 |
< |
int hres, vres; /* device resolution */ |
| 13 |
> |
VIEW v; /* base view parameters */ |
| 14 |
> |
int hres, vres; /* base view resolution */ |
| 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 */ |
| 25 |
< |
#define DEV_PUTVIEW 0100 /* print out current view */ |
| 18 |
> |
extern int imm_mode; /* bundles are being delivered immediately */ |
| 19 |
|
|
| 20 |
+ |
/* user commands */ |
| 21 |
+ |
#define DC_SETVIEW 0 /* set the base view */ |
| 22 |
+ |
#define DC_GETVIEW 1 /* print the current base 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 |
|
|
| 51 |
|
char *nm; : appropriate title bar annotation |
| 52 |
|
|
| 53 |
|
Sets fields of odev structure and prepares the display for i/o. |
| 54 |
< |
The view type, horizontal and vertical view angles and other default |
| 55 |
< |
parameters in odev.v should also be assigned. |
| 54 |
> |
The base view type, horizontal and vertical view angles and other |
| 55 |
> |
default parameters in odev.v should also be assigned. |
| 56 |
|
|
| 57 |
|
|
| 58 |
< |
void |
| 59 |
< |
dev_view(nv) : set display view parameters |
| 58 |
> |
int |
| 59 |
> |
dev_view(nv) : set base view parameters |
| 60 |
|
VIEW *nv; : the new view |
| 61 |
|
|
| 62 |
< |
Updates the display for the given view change. |
| 62 |
> |
Updates the display for the given base 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_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 |
|
|
| 103 |
+ |
VIEW * |
| 104 |
+ |
dev_auxview(n, hv) : return nth auxiliary view |
| 105 |
+ |
int n; : auxiliary view number |
| 106 |
+ |
int hv[2]; : returned horiz. and vert. image resolution |
| 107 |
+ |
|
| 108 |
+ |
Return the nth auxiliary view associated with the current base view. |
| 109 |
+ |
The hv entries are assigned the horizontal and vertical view resolution, |
| 110 |
+ |
respectively. Function returns NULL if there are no more auxiliary |
| 111 |
+ |
views. The zeroeth auxiliary view is the base view itself. |
| 112 |
+ |
|
| 113 |
+ |
|
| 114 |
|
void |
| 115 |
|
dev_close() : close the display |
| 116 |
|
|
| 119 |
|
|
| 120 |
|
|
| 121 |
|
************************************************************************/ |
| 122 |
+ |
|
| 123 |
+ |
|
| 124 |
+ |
extern VIEW *dev_auxview(); |
