Check incrementing logic for circle. Maybe could be done faster/nicer.
Test for performance (I believe not too much overhead was added as I did not notice big problems but maybe needs more testing)
Main test goal: moving group of entities with big los, building buildings with big los, removing group of buildings with big los or a bigger groups of buildungs with small los
Also there was gl error out of memory reported at forum topic, but might be just because of build I provided.
So please test with different OS.
Me: windows, intel graphic card- cannot reproduce gl out of memory error.