private int RayCastFilter(Ray ray, IDrawable d, List <RayCastHit <IDrawable> > hits)
{
var bb = d.GetBounds();
//var dist = (ray.Origin - bb.GetCenter()).Length();
float dist;
//if (ray.Intersects(bb) && dist < RCDist)
if ((((d.DrawFilter & DrawFilter) > 0 && d.DrawGroups.IsInDisplayGroup(DisplayGroup) && d.IsVisible) || d.Highlighted) &&
ray.Intersects(bb) && d.RayCast(ray, out dist) && dist < RCDist)
{
RCDist = dist;
hits.Clear();
hits.Add(new RayCastHit <IDrawable>(d, ray.Origin + ray.Direction * dist, dist));
return(1);
}
return(0);
}