Initial commit

1 files changed, 28 insertions, 0 deletions

diff --git a/sys/pmio/pmclear.x b/sys/pmio/pmclear.x
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+++ b/sys/pmio/pmclear.x
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+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<imhdr.h>
+include	<pmset.h>
+include	<plio.h>
+
+# PM_CLEAR -- Clear a mask.  The entire surface is cleared.  This is equivalent
+# to a full surface pm_rop with rop=PIX_CLR, but is more convenient and can be
+# implemented more efficiently since the entire surface is cleared.
+
+procedure pm_clear (pl)
+
+pointer	pl			#I mask descriptor
+
+include	"pmio.com"
+
+begin
+	if (PM_MAPXY(pl) == YES) {
+	    call amovkl (1, v1, PM_MAXDIM)
+	    call imaplv (PM_REFIM(pl), v1, v2, PM_MAXDIM)
+	    call amovl (IM_LEN(PM_REFIM(pl),1), v3, PM_MAXDIM)
+	    call imaplv (PM_REFIM(pl), v3, v4, PM_MAXDIM)
+
+	    call pl_rop (NULL, NULL, pl, v2, v4, PIX_CLR)
+
+	} else
+	    call pl_clear (pl)
+end