Fix light

Normand Briere

2019-06-25 829f93f305ce15893aada126a98d9068b1cdefed

 Blob.java
..
..
@@ -82,6 +82,7 @@
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     void retile()
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     {
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+                new Exception().printStackTrace();
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         System.exit(0);
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 		ClearList();
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         bRep = (new ImplicitTiler(this, ImplicitTiler.SURFACEID, true, true, true, cellSize, cellSize, tolerance, true)).bRep;