I understand that a function such as this ...
private function getScreenPos(ob:Object3D):Point{
var posn:Vector3D = ob.viewMatrix3D.position
var screenX:Number = posn.x / posn.z;
var screenY:Number = posn.y / posn.z;
return new Point(screenX,screenY)
}
...can find the 2D position of the 3D object, but how would I go about
finding the 2D position of a vector3D that hasn't been added to the
scene?
I'm using this to find if a 3d object will appear on the screen if I
add it, that way I won't waste precious processing power on a unseen
object.
Any help appreciated :)
