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/gim/gimsetmap.x | 80 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 sys/gio/gim/gimsetmap.x

(limited to 'sys/gio/gim/gimsetmap.x')

diff --git a/sys/gio/gim/gimsetmap.x b/sys/gio/gim/gimsetmap.x
new file mode 100644
index 00000000..2cf5f7b6
--- /dev/null
+++ b/sys/gio/gim/gimsetmap.x
@@ -0,0 +1,80 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<gio.h>
+include	<gescape.h>
+include	<gki.h>
+include	<gim.h>
+
+# GIM_SETMAPPING -- Define a mapping between a source rect and a destination
+# rect.  While the mapping is enabled, any changes to the source rect will
+# be automatically propagated to the destination rect.  If the source and
+# destination rects are not the same size the source rect will be scaled to
+# fit the output rect.  A negative DW or DH causes the X or Y axis to be
+# flipped during the mapping.  Setmapping automatically enables a new
+# mapping, but no data is copied until the source rect is subsequently
+# modified or the mapping is modified or refreshed.  Setmapping may be called
+# on an already existing mapping to edit the mapping.  If the mapping is
+# enabled the effect of the edit will be visible immediately.  Only the
+# modified regions of the destination rect will be updated by a mapping.
+
+procedure gim_setmapping (gp, mapping, rop,
+	src,st,sx,sy,sw,sh, dst,dt,dx,dy,dw,dh)
+
+pointer	gp			#I graphics descriptor
+int	mapping			#I mapping to be defined or edited
+int	rop			#I rasterop
+int	src			#I source raster
+int	st			#I coordinate type for source raster
+real	sx,sy,sw,sh		#I source rect
+int	dst			#I destination raster
+int	dt			#I coordinate type for destination raster
+real	dx,dy,dw,dh		#I destination rect
+
+short	gim[GIM_SETMAPPING_LEN]
+errchk	gpl_flush, gpl_cache
+include "../gpl.com"
+
+begin
+        # Flush any buffered polyline output.  Make sure the wcs transformation
+        # in the cache is up to date.
+
+        if (op > 1)
+            call gpl_flush()
+        else if (gp != gp_out || GP_WCS(gp) != wcs)
+            call gpl_cache (gp)
+
+	# Output the setmapping escape.
+	gim[GIM_SETMAPPING_MP] = mapping
+	gim[GIM_SETMAPPING_OP] = rop
+	gim[GIM_SETMAPPING_SR] = src
+	gim[GIM_SETMAPPING_ST] = st
+
+	if (st == CT_PIXEL) {
+	    gim[GIM_SETMAPPING_SX] = sx
+	    gim[GIM_SETMAPPING_SY] = sy
+	    gim[GIM_SETMAPPING_SW] = sw
+	    gim[GIM_SETMAPPING_SH] = sh
+	} else {
+	    gim[GIM_SETMAPPING_SX] = sx * GKI_MAXNDC
+	    gim[GIM_SETMAPPING_SY] = sy * GKI_MAXNDC
+	    gim[GIM_SETMAPPING_SW] = nint (sw * GKI_MAXNDC)
+	    gim[GIM_SETMAPPING_SH] = nint (sh * GKI_MAXNDC)
+	}
+
+	gim[GIM_SETMAPPING_DR] = dst
+	gim[GIM_SETMAPPING_DT] = dt
+
+	if (dt == CT_PIXEL) {
+	    gim[GIM_SETMAPPING_DX] = dx
+	    gim[GIM_SETMAPPING_DY] = dy
+	    gim[GIM_SETMAPPING_DW] = dw
+	    gim[GIM_SETMAPPING_DH] = dh
+	} else {
+	    gim[GIM_SETMAPPING_DX] = dx * GKI_MAXNDC
+	    gim[GIM_SETMAPPING_DY] = dy * GKI_MAXNDC
+	    gim[GIM_SETMAPPING_DW] = nint (dw * GKI_MAXNDC)
+	    gim[GIM_SETMAPPING_DH] = nint (dh * GKI_MAXNDC)
+	}
+
+	call gescape (gp, GIM_SETMAPPING, gim, GIM_SETMAPPING_LEN)
+end
-- 
cgit