Index: trunk/pswarp/src/pswarp.h
===================================================================
--- trunk/pswarp/src/pswarp.h	(revision 18839)
+++ trunk/pswarp/src/pswarp.h	(revision 19395)
@@ -35,5 +35,5 @@
     int nXpts, nYpts;                   // number of x,y samples in the grid
     int nXpix, nYpix;                   // x,y spacing in src image pixels of grid samples
-    double xMin,  yMin;			// coordinate of first grid sample
+    double xMin,  yMin;                 // coordinate of first grid sample
 } pswarpMapGrid;
 
@@ -51,5 +51,6 @@
 
     // output values for this tile
-    long goodPixels;
+    long goodPixels;                    // Number of good pixels
+    int xMin, xMax, yMin, yMax;         // Bounds of tile
 } pswarpTransformTileArgs;