public virtual void compute_global_transforms(Transform3Cache tcache)
{
//System.err.println("Computing coordinate for " + this);
Transform3 t = _transform; // local transform
Element.Builder p = this._parent;
while (p != null)
{
t = Transform3.compose(p._transform, t);
p = p._parent;
}
tcache.put_local_2_global_transform(this._id, t); // Local to global
tcache.put_global_2_local_transform(this._id, t.inverse()); // Global to local
}
/**
* Sets element position using global coordinate system
* Needs a prior call to build so we have the transformations needed
*/
public OpticalSystem updatePosition(Element.Builder e, Vector3 v)
{
// FIXME
if (_transform3Cache == null)
{
throw new InvalidOperationException("build() must be called prior to updating position");
}
if (e.parent() != null)
{
e.localPosition(_transform3Cache.global_2_local_transform(e.parent().id()).transform(v));
}
else
{
e.localPosition(v);
}
return(build());
}
public Builder parent(Element.Builder parent)
{
this._parent = parent;
return(this);
}
public Builder add(Element.Builder element)
{
this._elements.Add(element);
return(this);
}
public Group.Builder add(Element.Builder element)
{
this._elements.Add(element);
element.parent(this);
return(this);
}