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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <gset.h>
include "gks.h"
# GCA -- Cell array. Output a cell array to the specified output device
# area.
procedure gca (px, py, qx, qy, dimx, dimy, ncs, nrs, dx, dy, colia)
real px, py, qx, qy # Two points (P, Q) in world coordinates
int dx, dy # Number of columns, number of rows
int dimx, dimy # Dimensions of color index array
int ncs, nrs # Starting column, row of color array
int colia[dimx,dimy] # Colour index array
int i, j, off
pointer sp, pixels
include "gks.com"
begin
# Extract subraster and convert to type short.
call smark (sp)
call salloc (pixels, dx * dy, TY_SHORT)
do j = 1, dy {
off = (j - 1) * dx
call achtis (colia[ncs,nrs+j-1], Mems[pixels+off], dx)
}
# Output color array to all active workstations.
do i = 1, NDEV
if (gk_status[i] == ACTIVE)
call gpcell (gp[i], Mems[pixels], dx, dy, px, py, qx, qy)
call sfree (sp)
end
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