Retrieving bounding-box-value from a component instance ?

artmusicstudio

hi,
how ever i define the component instance,
if i retrieve the boundary box from an INSTANCE,

i get back the values from the DEFINITION.

which syntax is necessery to call the instance-parameters (especially highest "z" of its BB)


.....
elsif entity.is_a?(Sketchup;;ComponentInstance)
	@definition=entity.definition
	@auswahl=entity.name
	puts "auswahl_name ; " + @auswahl
		  #puts "selection = component"
		  calculation_top_nested_component	  
	else
		  #puts"other element type then face or group or component"
	end	  

and so on....


calling the method [b]calculation_top_nested_component[/b]


def calculation_top_nested_component
bbox = @definition.bounds
z = bbox.max
puts z

selection = @definition.entities()
selection.each { |entity|
	@auswahl = entity

and so on

so @definition always gives the same values for different comonents.

any idea?

thanx in advance
stan

EDIT: while retrieving information about faces from different instances of a component i found out, that
always informations from the definition-face will be given back, means: x,y,z is always the same, regardles, where the INSTANCE is placed.
so probably some transformation parameter have to be added to [x,y,z] to find the real position.

but how can i read out the transformation of the daughter component (= instance) ???

-:)

Dan Rathbun

The Sketchup::ComponentInstance class inherits a bounds() method from its superclass, Sketchup::Drawingelemnt, just as the Sketchup::ComponentDefinition class does.

Yes you need to understand transformations.

TIG has posted many how tos. Use the forum search, or check the Code Snippets index.

artmusicstudio

hi dan,i willk take a look at it.
yes, i was searching in the forum in the mean time a lot and found a topic from 2009 whit good ideas.
i can now identify the component instance and retrieve its own height, especially when it is nested.
there are still some minor problems , but the ruby returns the informations needed now.

thanx for helping me!

stan