Iterate through nested groups/components to get edges

Pixero

I want to get all edges from a selection of one or several nested groups or components.
How?

Pixero

A little further but still not working...
I have attached a simple test scene but only the "free" edges in the first level gets selected.

mod = Sketchup.active_model
sel = mod.selection
ent = mod.active_entities
edges = [] 
        
Sketchup.active_model.selection.each{|e|
    if e.is_a?(Sketchup;;Edge) #This works
      edges << e 
      
    elsif e.is_a?(Sketchup;;Group)
      e.entities.each{|edge|
        next unless edge.is_a?(Sketchup;;Edge)      
        edges << edge 
        }
      
     elsif e.is_a?(Sketchup;;ComponentInstance)
        e.definition.entities.each{|edge|
        next unless edge.is_a?(Sketchup;;Edge)      
        edges << edge       
        }        
     end
}
sel.clear
sel.add(edges)

Testscene

TIG

To process the selection you 'run' it...


def mine_edges(ents)
  @edges << ents.grep(Sketchup;;Edge)
  ents.grep(Sketchup;;Group).each{|gp|
    @edges << mine_edges(gp.entities)
  }
  ents.grep(Sketchup;;ComponentInstance).each{|co|
    @edges << mine_edges(co.definition.entities)
  }
end
def run()
  mod = Sketchup.active_model
  sel = mod.selection
  @edges = []
  mine_edges(sel)
  @edges.flatten! ### combine sub-arrays into one array
  sel.clear
  sel.add(@edges)
end

Why do you want to 'select' all these nested edges ?
you cannot do much to manipulate selections that span different entities without a BugSplat, however, if you change the last line to do something to the @edges array - e.g. remove their materials or layers, then than is acceptable...

Pixero

This is just a start of a script and one thing I want to do is to hide all the edges in nested groups and components all the way down.
Selecting is just to see if it works.

I ran your code but it also selecting the sub groups and components.

TIG

I thought that's what you wanted, otherwise your earlier code should select all edges in the active_entities AND within the groups/instances in that context.
My code collects ALL edges in the context and any edges within any groups/instances in that context AND nested deeper: it should not be selecting anything more than edges ?

So instead of selecting the collected edges you just need to iterate @edges and set each edge.hidden=true ?

Pixero

This is a screenshot after running your code.
As you can see the inner components and groups are also selected.

Skärmklipp.JPG

TIG

I do see it, and if you type @edges after it's run the list does include some component-instances.
This is weird since the code specifically collects just Edges !
BUT it's because the ' miner' was exiting without a specific 'empty' return statement, and therefore it also added the last thing it processed == the instances etc.
By forcing it to return [] [an empty array], then that is lost by the @edges.flatten! command at the end - so it now works as expected - @edges is an array of only edges...
Here's the fixed code...


def mine_edges(ents)
  @edges << ents.grep(Sketchup;;Edge)
  ents.grep(Sketchup;;Group).each{|gp|
    @edges << mine_edges(gp.entities)
  }
  ents.grep(Sketchup;;ComponentInstance).each{|co|
    @edges << mine_edges(co.definition.entities)
  }
  return []
end
def run()
  mod = Sketchup.active_model
  sel = mod.selection
  @edges = []
  mine_edges(sel)
  @edges.flatten! ### combine sub-arrays into one array
  sel.clear
  sel.add(@edges)
end

Pixero

Thank you. That works as I wanted.