optimize view using Galapagos

Hi Everyone! 

I have simulated a flocking behaviour using Quelea. I have set a view area (based on distance and view angle) for my agents so when a neighboor is inside this area the agent should steer to have a "clear view". The problem is that when I stop the timer some neighboors are inside the view field of an agent.  I have tried to continue using Galapagos to fix that problem. I need to rotate the view vector so that the view field is clear of neighboors. I guess that the genome is the rotation angle of the view vector but I am realy confused with the fitness number. I don't know how to express the "rotate view vector so no one is inside the view field" procedure.Any ideas? 

thanx in advance