From fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4 Mon Sep 17 00:00:00 2001
From: Joseph Hunkeler <jhunkeler@gmail.com>
Date: Wed, 8 Jul 2015 20:46:52 -0400
Subject: Initial commit

---
 sys/plio/plglp.gx | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 sys/plio/plglp.gx

(limited to 'sys/plio/plglp.gx')

diff --git a/sys/plio/plglp.gx b/sys/plio/plglp.gx
new file mode 100644
index 00000000..d5803033
--- /dev/null
+++ b/sys/plio/plglp.gx
@@ -0,0 +1,38 @@
+# 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_glp$t (pl, v, px_dst, px_depth, npix, rop)
+
+pointer	pl			#I mask descriptor
+long	v[PL_MAXDIM]		#I vector coords of line segment
+PIXEL	px_dst[ARB]		#O output pixel array
+int	px_depth		#I pixel depth, bits
+int	npix			#I number of pixels desired
+int	rop			#I rasterop
+
+int	np
+pointer	sp, px_out, ll_src
+pointer	pl_access()
+int	pl_l2p$t()
+errchk	pl_access
+
+begin
+	ll_src = pl_access (pl,v)
+	if (!R_NEED_DST(rop)) {
+	    np = pl_l2p$t (Mems[ll_src], v[1], px_dst, npix)
+	    return
+	}
+
+	call smark (sp)
+	call salloc (px_out, npix, TY_PIXEL)
+
+	np = pl_l2p$t (Mems[ll_src], v[1], Mem$t[px_out], npix)
+	call pl_pixrop$t (Mem$t[px_out], 1, PL_MAXVAL(pl),
+	    px_dst, 1, MV(px_depth), npix, rop)
+
+	call sfree (sp)
+end
-- 
cgit