Index: DamTools/GeometryVisualizer/GeometryPlot.py
===================================================================
diff -u -r4996 -r5103
--- DamTools/GeometryVisualizer/GeometryPlot.py	(.../GeometryPlot.py)	(revision 4996)
+++ DamTools/GeometryVisualizer/GeometryPlot.py	(.../GeometryPlot.py)	(revision 5103)
@@ -6,13 +6,14 @@
     data = json.load(file)
 
 # Extract points
+DEFAULT_VALUE = 91919191919.987654321
 surfaces = data.get('Surfaces', [])
 for surface in surfaces:
     curves = surface.get('OuterLoop', {}).get('Curves', [])
 
     points = []
-    previous_head_point = (999.9, 999.9)
-    previous_end_point = (999.9, 999.9)
+    previous_head_point = (DEFAULT_VALUE, DEFAULT_VALUE)
+    previous_end_point = (DEFAULT_VALUE, DEFAULT_VALUE)
     for curve in curves:
         head_point_element = curve.get('HeadPoint', {})
         end_point_element = curve.get('EndPoint', {})