Moving a compo-instance by z

[artmusicstudio]

hi,

i have a component-instance somewhere in space and i want to copy it in vertical direction.

how can i say to the transformation, that the movement is only Z and in the position of the original component?
(the position comes from a mouse-selection, so is not pre-calculated, but given...)

the transformation allows to input a 3d point [0,0,height_delta],
but i cannot retrieve the x,y of the original component ....

my_component = group.to_component
      defn = zf_component.definition
	#defn.name = "name"
						
		for groupcopy in 1..my_amount
						
		edge = model.entities.add_line([0,0,0],[0,0,@height*groupcopy])
		vector = edge.start.position.vector_to(edge.end.position)
		distance = edge.length
		vector.length = distance
		toppoint_1 = [0,0,@height*groupcopy]
		nullpoint = [0,0,0]
	        toppoint_2 = vector[1]
						
	componentinstance =
	entities.add_instance(defn, [ 0,0,0]) # ???? HOW TO DEFINE THE POSITION OF THE ORIGINAL COMPONENT-DEFINITION TO BECOME A COPY AT THE SAME POSITION ???
				
	new_transformation = Geom;;Transformation.new([ 0,0,@height*groupcopy])
 	componentinstance.move! new_transformation

thanx
stan

---

[TIG]

You have a component definition [ defn].
You have an instance of it [ inst1].
That instance has a transformation [ tr1=inst1.transformation].
That transformation has an origin [ org=tr1.origin] - i.e. its 'insertion point'.
You make a new transformation based on that:
tr2=Geom::Transformation.new([org.x, org.y, org.z+z_increment])
Where the ' z_increment' is the amount by which you want to move the copy upwards - either in inches or a Length.
You add the copy thus:
inst2=inst1.add_instance(defn, tr2)