Get Opening

[HOA NGUYEN]

H Guy,
I make a wall with opening, I deconstruc this wall.
How I can select opening into Grasshopper?
Thanks

[Laszlo Nagy]

Check this video about the Deconstruct Nodes:





I think you will need to use the "CSG" Surfaces" component. (CSG = Constructive Solid Geometry).

[HOA NGUYEN]

I use opening tool to make opening in slab
But output of CSG surface is empty?

And I have another question in get column curve it very small
My unit in Archicad is mm and Rhino is mm, but when I use deconstruct column to get AP and EP the Line grom these points is 3.7mm

Please help me!

[Laszlo Nagy]

I might be wrong because I do not currently have Grasshopper installed so I cannot check it, but I think that Openings have not yet been implemented in the Archicad-Grasshopper Connection. (There is no word about it in the User Guide).
So I think you cannot expect to get correct results by the Decompose Nodes when working with Openings.
Try to place those openings into the Slab by editing the Slab and creating Slab holes.
In the case of openings in walls, place them by placing an empty "Door/Window Opening" library part the wall.