A small "entity to group" problem

[artmusicstudio]

hi,
i wopuld be greatful for a small tip:

i have a @main_element,
which contains some faces

when i iterate thru the entities, i can check the normal, see the top face and push pull

i also can create a new group within the @main_element-container and put an edge in it.

buit when i want to put one of the @ main_element's entities (here it is a face) into this new group,
i get a "parent" problem, which i don't understand:

@selection.each { |entity|
	
		if entity.is_a?(Sketchup;;Face) 
		
			check_normal_for_horizontal(entity) #my own method
			puts @bgf_count_normal # 1 is face top
			if @bgf_count_normal == 1
				puts "---FACE UP ... IN MAIN-ELEMENT"
				#			
				entities = @main_element.entities
                                #
				group = entities.add_group
				entities2 = group.entities
				point1 = Geom;;Point3d.new(0,0,0)
				point2 = Geom;;Point3d.new(2000,200,200) #works
 				edges = entities2.add_edges point1, point2
				#
				#			
				loop = entity.outer_loop # does not work
				edgearray = loop.edges
                                floor = entities2.add_face(edgearray)
                        end
                 end
                 }

why does the new face from edgearray not appear in the group?

info from console:

###############
---FACE UP ... IN MAIN-ELEMENT
Error: #<ArgumentError: Edge has different parent>
C:/Program Files (x86)/SketchUp/SketchUp 2014/Tools/02.rb:959:in `add_face'
################

thanx
stan

[TIG]

Tip:

Don't iterate a selection,
Its referring changes as you remove items!
Iterate a snapshot array of it
@selection.to_a.

Next...

You can't reassign entities from one context to another.
Although you CAN 'add entities' in the active_entities context into a group.entities in the same context.
BUT you can't do it the way you want - because you are attempting to make a face in one context using the edges in another...

Try something like:
varray = entity.outer_loop.vertices floor = entities2.add_face(varray)
You can use an array of vertices as well as points...

[artmusicstudio]

hi tig,

that's fantastic,

point 2 : solved ( i already though of retrieving the points , but vertices work perfectly!

for point 1:

got it working, super. thanx.

by the way, is there a code for deliting an array of edges directly ? or do i have to iterate thru the array and erase one after another?

in my case i create a copy of a face in the new group (>> vertices)
and wantto delete the original entity incl. edges.

thanx a lot
stan

[Dan Rathbun]

@artmusicstudio said:

..., is there a code for deliting an array of edges directly ? or do i have to iterate thru the array and erase one after another?

use Entities.erase_entities()

The argument can be a single entity, or an array of entities.

ALSO... Ruby has an "accordian operator" the * that can be used to expand an array into a argument list, or compress arguments in an array.
IF erase_entities also takes a list of multiple entities, you could convert the aray to a list like:
my_ents.erase_entities( *my_edge_array )