Full Version: Creases when subdividing an extruded polyline triangle

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Hi Bernhard, also you could try dividing it into Quads by trimming / joining it like this, and make sure the "High quality mode" checkbox is set:









- Michael

Image Attachments:
Bernhard_subd1.jpg  Bernhard_subd2.jpg  Bernhard_subd3.jpg  Bernhard_subd4.jpg 

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Hi PaQ,

Thanks very much for the fast response. Sounds very promising. The triangle is part of a much more complex model, so I'm curious how the classic subdivision will play along. I'll try it out a report how it goes.

best regards

Bernhard

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Hi Michael,

Thanks very much for the hint! I'll try it out. From what I can see, the resulting shape will be slightly different when applying this solution. Nevertheless, I'll give it a try and report if it can be applied for my use case.

best regards

Bernhard

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Hi!

It turned out that the triangular prisms integrated in my model are not causing visible creases (lucky me).

Nevertheless, thanks again for the hints - I'm having the feeling that this knowledge is needed, sooner or later :-)

best regards

Bernhard



P.S.: it took me a while to figure out how to create a triangular prism that has control points: you need to loft two adjacent lines and then extrude the surface. When instead extruding a plane polygon triangle or lofting two polygon triangles (with closed caps), then you loose the control points (because the control points of the individual surfaces don't align).

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Interesting info, thanks PaQ and Michael. I didn't know yet that combining SubdivClassic with the regular Subdiv has its advantages.

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