Repatch (from linux) of OSX IRAF

1 files changed, 41 insertions, 0 deletions

diff --git a/sys/gio/gcurpos.x b/sys/gio/gcurpos.x
new file mode 100644
index 00000000..a0d4cb4d
--- /dev/null
+++ b/sys/gio/gcurpos.x
@@ -0,0 +1,41 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<gki.h>
+include	<gio.h>
+
+# GCURPOS -- Get the current position in world coordinates.  The current
+# position is maintained internally in GKI coordinates to make it invariant
+# with respect to changes in the current WCS.
+
+procedure gcurpos (gp, x, y)
+
+pointer	gp			# graphics descriptor
+real	x, y			# current position in current WCS (output)
+
+real	aelogr()
+include	"gpl.com"
+
+begin
+	if (gp != gp_out || GP_WCS(gp) != wcs)
+	    call gpl_cache (gp)
+
+	if (IS_INDEF(cx) || IS_INDEF(cy)) {
+	    x = INDEF
+	    y = INDEF
+
+	} else {
+	    x = (cx - mxorigin) / xscale + wxorigin
+	    if (xtran != LINEAR)
+		if (xtran == LOG)
+		    x = 10.0 ** x
+		else
+		    x = aelogr (x)
+
+	    y = (cy - myorigin) / yscale + wyorigin
+	    if (ytran != LINEAR)
+		if (ytran == LOG)
+		    y = 10.0 ** y
+		else
+		    y = aelogr (y)
+	}
+end