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/calcomp/ccpclear.x | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 sys/gio/calcomp/ccpclear.x

(limited to 'sys/gio/calcomp/ccpclear.x')

diff --git a/sys/gio/calcomp/ccpclear.x b/sys/gio/calcomp/ccpclear.x
new file mode 100644
index 00000000..9ff17c20
--- /dev/null
+++ b/sys/gio/calcomp/ccpclear.x
@@ -0,0 +1,29 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<mach.h>
+include	"ccp.h"
+
+# CCP_CLEAR -- Advance a frame on the plotter.  All attribute packets are
+# initialized to their default values.  Redundant calls or calls immediately
+# after a workstation open (before anything has been drawn) are ignored.
+
+procedure ccp_clear (dummy)
+
+int	dummy			# not used at present
+include	"ccp.com"
+
+begin
+	# This is a no-op if nothing has been drawn.
+	if (g_cc == NULL || g_ndraw == 0)
+	    return
+
+	# Start a new frame.  This is by resetting the origin to the last
+	# x-position drawn plus a compile-time offset.
+
+	call plot (g_max_x + FRAME_OFFSET, 0.0, -3)
+	g_max_x = 0.0
+
+	# Init kernel data structures.
+	call ccp_reset()
+	g_ndraw = 0
+end
-- 
cgit