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
|
# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <pmset.h>
include <plio.h>
# PM_LINE -- Perform a rasterop operation upon a line of arbitrary width drawn
# at an arbitrary orientation in a 2-dimensional plane of a mask. If the
# dimensionality of the mask exceeds 2, the pm_setplane() procedure should be
# called first to define the plane of the mask to be modified.
procedure pm_line (pl, x1, y1, x2, y2, width, rop)
pointer pl #I mask descriptor
int x1,y1 #I start point of line
int x2,y2 #I end point of line
int width #I width of line to be drawn, pixels
int rop #I rasterop defining operation
errchk pl_getplane
include "pmio.com"
begin
if (PM_MAPXY(pl) == YES) {
call pl_getplane (pl, v1)
v1[1] = x1; v1[2] = y1
call imaplv (PM_REFIM(pl), v1, v2, PM_MAXDIM)
call pl_getplane (pl, v3)
v3[1] = x2; v3[2] = y2
call imaplv (PM_REFIM(pl), v3, v4, PM_MAXDIM)
call pl_line (pl, v2[1],v2[2], v4[1],v4[2], width, rop)
} else
call pl_line (pl, x1, y1, x2, y2, width, rop)
end
|