Pick vertex?

[thomthom]

I want to be able to pick a vertex, how would I do that? The pickhelper doesn't seem to return vertices.

Also, I got this little test code:

def pick
	Sketchup.active_model.select_tool Stix.new
end

class Stix
	#def self.onMouseMove(flags, x, y, view)
	#	
	#end
	
	def onLButtonUp(flags, x, y, view)
		ph = view.pick_helper
		ph.do_pick(x, y)
		picked = ph.all_picked
		puts 'picked;'
		puts picked
	end
end

When I group a cube and click on a point that would be a vertex, all_picked return the group multiple times.

picked;
#<Sketchup;;Group;0x88c5ce0>
#<Sketchup;;Group;0x88c5ce0>
#<Sketchup;;Group;0x88c5ce0>
#<Sketchup;;Group;0x88c5ce0>
#<Sketchup;;Group;0x88c5ce0>
#<Sketchup;;Group;0x88c5ce0>

As oppose to this when it's not grouped, or inside the group.

picked;
#<Sketchup;;Edge;0x8851fe8>
#<Sketchup;;Edge;0x8851fd0>
#<Sketchup;;Face;0x88545b0>
#<Sketchup;;Edge;0x88545e0>
#<Sketchup;;Face;0x8851fb8>
#<Sketchup;;Face;0x88545c8>

I had expected it to list the group as well as the edges and faces inside it.

How come I get this result? What's the point in returning the same group multiple times?

[fredo6]

You should use an InputPoint instead, if you are just interested by the vertex.

ip = Sketchup;;Input.point.new

ip.pick view, x, y

vertex = ip.vertex   #or nil if none
edge = ip.edge #or nil if none
face = ip.face   #or nil if none

#use tr * ip.position to have the absolute coords if your vertex is embedded 
# in groups or components

tr = ip.transformation 

redo

[thomthom]

Ah! Thanks Fredo!

If it's nested in multiple groups, do I have to do transformation * transformation on all groups first?

group1.transformation * group2.transformation * ip.position ?

[thomthom]

Still curious to why pickhelper returns the group so many times though...

[fredo6]

No, just use ip.transformationto get the coordinates in the current active_model (it is cumulative).
You don't have to use the pickhelper, except if you want to know more about the hierarchy of groups and components.

Fredo

[thomthom]

Thanks allot, once more.