gegl r2964 - in trunk: . gegl

[martinn svn gnome org]

Author: martinn
Date: Tue Mar 17 20:00:54 2009
New Revision: 2964
URL: http://svn.gnome.org/viewvc/gegl?rev=2964&view=rev

Log:
Add utility functions for GeglRectangles representing infinite planes

Add utility functions for GeglRectangles representing infinite planes,
namely gegl_rectangle_infinite_plane() and
gegl_rectangle_is_infinite_plane().

Modified:
   trunk/ChangeLog
   trunk/gegl/gegl-utils.c
   trunk/gegl/gegl-utils.h

Modified: trunk/gegl/gegl-utils.c
==============================================================================
--- trunk/gegl/gegl-utils.c	(original)
+++ trunk/gegl/gegl-utils.c	Tue Mar 17 20:00:54 2009
@@ -175,6 +175,22 @@
   return result;
 }
 
+GeglRectangle
+gegl_rectangle_infinite_plane (void)
+{
+  GeglRectangle infinite_plane_rect = {G_MININT / 2, G_MININT / 2, G_MAXINT, G_MAXINT};
+  return infinite_plane_rect;
+}
+
+gboolean
+gegl_rectangle_is_infinite_plane (const GeglRectangle *rectangle)
+{
+  return (rectangle->x      == G_MININT / 2 &&
+          rectangle->y      == G_MININT / 2 &&
+          rectangle->width  == G_MAXINT     &&
+          rectangle->height == G_MAXINT);
+}
+
 GType
 gegl_rectangle_get_type (void)
 {

Modified: trunk/gegl/gegl-utils.h
==============================================================================
--- trunk/gegl/gegl-utils.h	(original)
+++ trunk/gegl/gegl-utils.h	Tue Mar 17 20:00:54 2009
@@ -139,6 +139,22 @@
 gboolean    gegl_rectangle_contains      (const GeglRectangle *parent,
                                           const GeglRectangle *child);
 
+/**
+ * gegl_rectangle_infinite_plane:
+ *
+ * Returns a GeglRectangle that represents an infininte plane.
+ */
+GeglRectangle gegl_rectangle_infinite_plane (void);
+
+/**
+ * gegl_rectangle_is_infinite_plane:
+ * @rectangle: A GeglRectangle.
+ *
+ * Returns TRUE if the GeglRectangle represents an infininte plane,
+ * FALSE otherwise.
+ */
+gboolean gegl_rectangle_is_infinite_plane (const GeglRectangle *rectangle);
+
 
 
 /***