Data conversion failed from ( simple rectangle extrusion ) brep to surface!

Grasshopper
1

I’m trying to create a louvre façade and in doing so, I need to locate a number of points on a surface and get their normals using “Evaluate Surface” component.

But the “Surface Closest Point” component is not accepting a simple rectangle extrusion. I can get past this by using “Brep Closest Point” but the only component that I have found so far that gives me the normals of those points is the “Evaluate Surface” component.

Screenshot (183)
Screenshot (183)1971×507 57.7 KB

I tried deconstructing the brep and extracting all it’s faces which the “Surface Closest Point” components accepts but the “Evaluate Surface” gives me 6 sets of results ( for each face ) and there’s no way separating each set of points for their face.

I appreciate any help, thanks in advance.

2

Correct, as designed, those components expect a surface, not “a simple rectangle extrusion” (polysurface)

Use the Boundary surface instead of Extr (Extrude).

1 Like
3

Thank you for the response. How can I create single boundary surface of these 4 walls using the floor rectangle as an input?

Screenshot (184)
Screenshot (184)1332×750 109 KB

4

As I said before, use the Boundary surface you already have, before you extrude it.

5

I need to locate the points on vertical surfaces ( all 4 sides ), not on the horizontal rectangle while it’s lying on the ground.

6

This is not a true solution but for anyone encountering this problem in the future, if you add a fillet radius to the original rectangle, anything above 0, the “Surface Closest Point” component accepts the extrusion as a surface.