Cache for polygon 3D drawing

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35588 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Cache for polygon 3D drawing

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35589 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
* Cache for polygon 3D drawing
* better 3D preview for polygon

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35590 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e