face-normal-flip-float-bug ?

[teobo]

Is it on the bug or at least on the request list at occ?

http://tracker.dev.opencascade.org/roadmap_page.php
http://tracker.dev.opencascade.org/view ... g_page.php
I don't think so. But, tough their bug tracker is publicly available, most requests issued by or on behalf of their paying customer are not visible for us.

So, when I take some time, I gonna leave a hint there with an url to this thread or to our bug tracker thread about it. May it be it be a design flow that difficult to work around or bug:
1. Face normals flip unpredictably at creation
2. which causes hardly foreseeable and silently broken solids. <-Is it that?

Thanks for the links shoogen.

[shoogen]

I did some testing creating triangles from random points.
The topology is fine up to the wire.
Then when creating a face from a wire. The wire is reported to reversed orientation in the face.

http://tracker.dev.opencascade.org/view.php?id=24954

EDIT: The culprit seems to be that https://github.com/tpaviot/oce/blob/mas ... urface.cxx does not care about the order of the vertices.
Maybe we can implement of own function to return surfaces with the correct Orientation (for triangles and quads)

[Kunda1]

I did some testing creating triangles from random points.
The topology is fine up to the wire.
Then when creating a face from a wire. The wire is reported to reversed orientation in the face.

http://tracker.dev.opencascade.org/view.php?id=24954

EDIT: The culprit seems to be that https://github.com/tpaviot/oce/blob/mas ... urface.cxx does not care about the order of the vertices.
Maybe we can implement of own function to return surfaces with the correct Orientation (for triangles and quads)

Update: http://tracker.dev.opencascade.org/view.php?id=24954 is on the OCC roadmap to be fixed in 7.2.0
How does that impact issue #1538 ?

[Kunda1]

Upstream says this is actually fixed in OCCT 6.9

Problem described in issue is not reproduced on current state of OCCT.
Problem has been solved in OCCT6.9.0.

Someone care to test and report ?