Sort surfaces between horizontal or vertical ones.

I should be able to ask this question without posting a picture.

I have a closed brep that consists of horizontal and vertical surfaces.

I have exploded the brep and now I want to get only the horizontal surfaces?

So I need to make a cull pattern that sorts my surfaces to two lists of horizontal and vertical surfaces.

Does anyone have a quick (I assume) sollution?

Replies to This Discussion

Permalink Reply by Piotr on April 8, 2014 at 3:48pm

One solution that comes to my mind:

project all surfaces on flat (horizontal or vertical) one then you have some with 0 area and some with more than 0 - here is your culling pattern.

Permalink Reply by Johann Magnus Kjartansson on April 8, 2014 at 3:58pm

Thanks man, that worked! :)

I had already solved it with a much more complicated one...will use your solution.

Attachments:

Canvas at 22;56;11.png, 39 KB

Permalink Reply by gemma ggv on June 30, 2015 at 8:16am

I was trying to the same but with "cull index", and of course it didn't work. I used cull pattern now and it does but I still don't understand why, it is not a patterned "true/false", right? Could you explain why we use this one?

Thanks! I get it is a very silly question

Permalink Reply by Piotr on June 30, 2015 at 9:48am

Hi Gemma

Post your file, I'll check it.

Permalink Reply by gemma ggv on June 30, 2015 at 9:53am

HEy, thanks for your quick response! It is actually more of a theory question, I was trying to do exactly the same as you but using "Cull Item" Instead of "Cull pattern" (and didnt work).

I do not understand why it works using cull pattern and not with Cull item, just that (I got it to work thanks to the image above)

Thanks!

Permalink Reply by Mateusz Zwierzycki on June 30, 2015 at 9:58am