1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <plio.h>
# PL_GLP -- Get a line segment as a pixel array, applying the given ROP to
# combine the pixels with those of the output array.
procedure pl_glps (pl, v, px_dst, px_depth, npix, rop)
pointer pl #I mask descriptor
long v[PL_MAXDIM] #I vector coords of line segment
short px_dst[ARB] #O output pixel array
int px_depth #I pixel depth, bits
int npix #I number of pixels desired
int rop #I rasterop
int np
pointer sp, px_out, ll_src
pointer pl_access()
int pl_l2ps()
errchk pl_access
begin
ll_src = pl_access (pl,v)
if (!R_NEED_DST(rop)) {
np = pl_l2ps (Mems[ll_src], v[1], px_dst, npix)
return
}
call smark (sp)
call salloc (px_out, npix, TY_SHORT)
np = pl_l2ps (Mems[ll_src], v[1], Mems[px_out], npix)
call pl_pixrops (Mems[px_out], 1, PL_MAXVAL(pl),
px_dst, 1, MV(px_depth), npix, rop)
call sfree (sp)
end
|
