Index: trunk/psModules/src/camera/pmFPA.h
===================================================================
--- trunk/psModules/src/camera/pmFPA.h	(revision 14201)
+++ trunk/psModules/src/camera/pmFPA.h	(revision 14647)
@@ -6,6 +6,6 @@
  * @author Eugene Magnier, IfA
  *
- * @version $Revision: 1.15 $ $Name: not supported by cvs2svn $
- * @date $Date: 2007-07-14 03:17:18 $
+ * @version $Revision: 1.16 $ $Name: not supported by cvs2svn $
+ * @date $Date: 2007-08-23 23:42:41 $
  * Copyright 2005-2006 Institute for Astronomy, University of Hawaii
  */
@@ -18,4 +18,20 @@
 
 #define FPA_ASTROM 1                    ///< Include astrometry information in the structures?
+
+// Return chip position, given FPA position; calculations are all done in pixel units
+#define PM_FPA_TO_CHIP(pos, chip0, chipParity) \
+    (((pos) - (chip0))*(chipParity))
+
+// Return cell position, given chip position; calculations are all done in pixel units
+#define PM_CHIP_TO_CELL(pos, cell0, cellParity, binning) \
+    (((pos) - (cell0))*(cellParity)/(binning))
+
+// Return chip position, given a cell position; calculations are all done in pixel units
+#define PM_CELL_TO_CHIP(pos, cell0, cellParity, binning) \
+    ((pos)*(binning)*(cellParity) + (cell0))
+
+// Return FPA position, given a chip position; calculations are all done in pixel units
+#define PM_CHIP_TO_FPA(pos, chip0, chipParity) \
+    ((pos)*(chipParity) + (chip0))
 
 /// Focal plane array (the entirety of the camera)