Index: trunk/FACT++/gui/BasicGlCamera.cc
===================================================================
--- trunk/FACT++/gui/BasicGlCamera.cc	(revision 11803)
+++ trunk/FACT++/gui/BasicGlCamera.cc	(revision 11804)
@@ -8,10 +8,10 @@
 
 //Coordinates of an hexagon of radius 1 and center 0
-GLfloat hexcoords[6][2] = {{-0.577367206,  1},
-                           { 0.577367206,  1},
-                           { 1.154734411,  0},
-                           { 0.577367206, -1},
-                           {-0.577367206, -1},
-                           {-1.154734411,  0}};
+GLfloat hexcoords[6][2] = {{-1./sqrt(3.),  1},
+                           { 1./sqrt(3.),  1},
+                           { 2./sqrt(3.),  0},
+                           { 1./sqrt(3.), -1},
+                           {-1./sqrt(3.), -1},
+                           {-2./sqrt(3.),  0}};