After making cap on my polysurface, something strange is happening. The front face is corrupted which can be seen in shaded and rendered view and in zebra analysis
I think my approach to an object like this would be to create a closed poly line with ortho on, then fillet corners as desired to make the cross section. Then I would extrude it. If you need it to be a solid instead of an extrusion, then explode it, select all the pieces and join them.
Hello - run the DivideAlongCreases command, with no pre-selection and set SplitAttangents =Yes, then select the object.
Surfaces that have segments that are tangent and not curvature continuous (e.g. often created when the input is tangent arcs and straights) can cause problems for the meshing needed to display the object in shaded modes - by splitting the surfaces up at tangent locations, each new face is meshed independently. This is generally a better situation for other operations as well.
Yes. Or, splitting should just happen, and merging should be the thing you have to do deliberately. I have not got any traction with that over the years. SplitAttangents=Yes/No in some commands is the best we have.
Hi Martin - if you use extrusions then the splitting occurs; if 1) UseExtrusions is set to Polysurfaces (not the default) and 2) SplitAtTangents=No (default) then you get the combined surfaces in ExtrudeCrv.
I’ve only seen trouble from extrusions not split at tangents. What’s their benefit? What’s a good use case to have decided to make them a default behavior?
