* see a blog post of Anders Wallin for more details: http://www.anderswallin.net/2010/10/adaptive-sampling-drop-cutter/
simplified the "max_height" detection


git-svn-id: https://pycam.svn.sourceforge.net/svnroot/pycam/trunk@815 bbaffbd6-741e-11dd-a85d-61de82d9cad9