Ruby : Get dimensions of a transformed element

[nicoiweins]

Hi there,

I have a problem with dimensions of a group which has been transformed with the scale tool
(or the edges of a group)

before and after the transformation, I get the same dimensions.

here is my script :

myEdges= []
entGroup = myGroup.entities
entGroup .each do |e|
  if e.is_a? Sketchup;;Edge
    myEdges<< e.length
  end
end
puts myEdges

Is there a better way to get my dimensions using Ruby?

using boundingbox I have the same problem

bbox = myGroup.local_bounds
widthBox = bbox.width
depthBox = bbox.depth
heightBox = bbox.height

Thanks for your help

Nicolas

[TIG]

You need to take into account the transformation of the group when looking at distances, thus:

g=Sketchup.active_model.selection[0]; g.entities.grep(Sketchup;;Edge).each{|e| p (e.start.position.transform(puts; g.transformation).vector_to(e.end.position.transform(g.transformation))).length ; p e.length}; puts;

Make a group [say a square that's 10 inches], make a copy, scale one of those groups, select the original sized one, paste this code in the Ruby Console + <enter>.

Then repeat the selection and code for the scaled one.

Your output for each is in pairs - the transformed distance between each vertex and the edge length.
The unscaled one returns matching pairs, but the scaled one gives the transformed distance and the original length...

[nicoiweins]

OK it seems great and for a bounding box?

[nicoiweins]

Thank you TIG for your help

I wrote this function

def getLength pt1,pt2,myGroup
  myLength =  (pt1.transform(myGroup.transformation).vector_to(pt2.transform(myGroup.transformation))).length
  return myLength 
end

#    # for the boundingbox of the group myGroup
#    width = getLongueur bbox.corner(0),bbox.corner(1),myGroup
#    depth = getLongueur bbox.corner(0),bbox.corner(2),monGroup
#    height = getLongueur bbox.corner(0),bbox.corner(4),monGroup

#    # for a edge myEdge of the group myGroup
#    length = getLongueur myEdge.start.position,myEdge.end.position,myGroup

[Dan Rathbun]

@nicoiweins said:

OK it seems great and for a bounding box?

use
group_instance.bounds()
which is inherited from Sketchup::Drawingelement, the superclass of Sketchup::Group (and most all model objects that are seen.) Even more model objects are descended from Sketchup::Entity, including Sketchup::Drawingelement. Each Ruby class inherits from it's ancestor classes.