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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <gio.h>
include <gescape.h>
# GIM_WRITECOLORMAP -- Write to a colormap.
procedure gim_writecolormap (gp, colormap, first, nelem, r, g, b)
pointer gp #I graphics descriptor
int colormap #I colormap number (0=screen)
int first #I first colormap entry to be written
int nelem #I number of elements to write
int r[ARB],g[ARB],b[ARB] #I RGB color values (0-255)
int i
pointer sp, cm, op
short gim[GIM_WRITECMAP_LEN]
errchk gpl_flush
begin
call gpl_flush()
call smark (sp)
call salloc (cm, nelem * 3, TY_SHORT)
gim[GIM_WRITECMAP_MP] = colormap
gim[GIM_WRITECMAP_FC] = first
gim[GIM_WRITECMAP_NC] = nelem
do i = 1, nelem {
op = cm + (i - 1) * 3
Mems[op+0] = r[i]
Mems[op+1] = g[i]
Mems[op+2] = b[i]
}
call gki_wescape (GP_FD(gp), GIM_WRITECMAP,
gim, GIM_WRITECMAP_LEN, Mems[cm], nelem * 3)
call sfree (sp)
end
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