compare method

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30962 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Reorganize code

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30963 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Reset uniform normal value

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30964 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
* start polygon triangulation (step 2)
* refactor isConvex() method

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30965 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e