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/gio/grdraw.x | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 sys/gio/grdraw.x

(limited to 'sys/gio/grdraw.x')

diff --git a/sys/gio/grdraw.x b/sys/gio/grdraw.x
new file mode 100644
index 00000000..7cd44a74
--- /dev/null
+++ b/sys/gio/grdraw.x
@@ -0,0 +1,24 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<gio.h>
+
+# GRDRAW -- Relative draw, i.e., move the pen to the specified offset from the
+# current position.
+
+procedure grdraw (gp, x, y)
+
+pointer	gp			# graphics descriptor
+real	x, y			# offset from current position
+real	cx, cy
+
+begin
+	if (IS_INDEF(x) || IS_INDEF(y))
+	    call gadraw (gp, x, y)
+	else {
+	    call gcurpos (gp, cx, cy)
+	    if (IS_INDEF(cx) || IS_INDEF(cy))
+		call gadraw (gp, INDEF, INDEF)
+	    else
+		call gadraw (gp, cx + x, cy + y)
+	}
+end
-- 
cgit