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.