   Sorting Transparent billboards
  How would i go by sorting transparent polies?Do i just use the distance formula between the billboards and the camera and then sort them?If so, how would i sort them? 
  Use better sqared distance from camera to billboard.;  If they are transparent then it doesn''t matter, you wont see anything anyway But like minor saysJust find the square distance from the camera, but only in the direction of the camera so if yous have a camera forward unit vector n say, for each billboardvector toBillboard = billboard.position - camera.position;float projection = n.DotProduct( toBillboard );and with projection<0 don;t draw and then sort the rest drawing the ones with greates projection firts.Or something 