Convert triangular mesh to BRep - Forum Open Cascade Technology

Rakesh Patil
Wed, 04/05/2017 - 13:56

Forums:

Hi,

I am new to OpenCascade. I would like to know whether OCC provides any function to convert triangular mesh to Boundary representation object? If so how can I do it?

Thanks

Qr Qr
Wed, 04/05/2017 - 14:14

Hello Rakesh,

What exactly do you want to achieve? Is it Ok to have a single B-Rep face for each individual triangle? Otherwise, the problem is extremely difficult to solve, and there is no open source solution for that on the earth (afaik).

Kind regards.

Rakesh Patil
Wed, 04/05/2017 - 14:57

Hi,

Thanks for quick reply. Consider I have a cuboid with all its faces being triangulated. The final output I need is to have only 6 faces of cuboid without triangles. This is just an example. Similar thing should happen with cylinder or sphere. Is it possible to do that?

Thank you

qa qa
Wed, 04/05/2017 - 15:06

Hi,

Unfortunately, such reconstruction is extremely difficult. Qr Qr is right. OCCT does not provide such a functionality.

qa qa

Rakesh Patil
Wed, 04/05/2017 - 15:12

Hi,

Thanks. Then I have another question, which I will start as a new thread. Thanks again.

Rakesh Patil
Wed, 04/05/2017 - 16:56

Hi,

Just for curiosity, will the piece of code mentioned here https://www.opencascade.com/content/extracting-boundary-topodsshape help me to solve my problem?

Thanks

qa qa
Thu, 04/06/2017 - 08:01

No, resulting TopoDS_Shape will contain all triangles.

qaqa