public void AddLight(PointLightPE pl,float speed, float radius , float initialAngle) 
 {
     lightProp lp = new lightProp();            
     lp.speedAcumullated = initialAngle;
     lp.pl = pl;
     lp.center = pl.LightPosition;
     lp.speed = speed;
     lp.radius = radius;
     lights.Add(lp);
 }
        public void AddLight(PointLightPE pl, float speed, float radius, float initialAngle)
        {
            lightProp lp = new lightProp();

            lp.speedAcumullated = initialAngle;
            lp.pl     = pl;
            lp.center = pl.LightPosition;
            lp.speed  = speed;
            lp.radius = radius;
            lights.Add(lp);
        }