--- trunk/SHAPES/GridBuilder.cpp	2004/06/23 23:47:56	1293
+++ trunk/SHAPES/GridBuilder.cpp	2004/06/25 17:54:51	1306
@@ -68,7 +68,9 @@ void GridBuilder::launchProbe(int forceField, vector<d
   for (k =0; k < gridwidth; k++) {
     thetaVal = thetaMin + k*thetaStep;
     for (j=0; j < gridwidth; j++) {
-      phiVal = j*phiStep;
+      phiVal = j*phiStep + 0.5*PI;
+      if (phiVal>=2*PI)
+        phiVal -= 2*PI;
 
       rbMol->setEuler(0.0, thetaVal, phiVal);