Smooth AND Hard edges inside one Mesh

Anonymous — Tue, 05 Dec 2017 14:02:35 GMT

Hello Everyone,

I'm still relatively new to development for 3D applications and an absolute greenhorn when it comes to the FBXSDK.

I have a question which I was not able to answer myself, I did some digging trough the docs and this forum but no luck for me.

Here it goes:
I have a mesh which contains numerous polygons. Some of the polygons require to be "smoothed together" so that they appear as a nice curved surface.

The other polygons need to remain sharp-edged.

This Object is a good example for what I am trying to achieve:

The area enclosed in red contains a number of polygons which have smoothing applied to create a rounded surface - while the rest (green area as an example) remains with sharp edges.

Unfortunately I was not able to do this yet. The only way I have come up with is to split the geometry into two meshes - The geometry which requires rounding and the geometry which should stay sharp-edged. I then generate Normals for the "rounding mesh" using the "byControlPoint" method and for the "sharp edge" with the "byPolyVertex" method.

But I feel like this cannot be the correct way to go about it - it seems very odd to have to separate my geometry up.

I tried playing around with "Edge Management" and "Crease Utility" functions - but I did not get anywhere with them.

The documentation does not even hint if "Edge Management" or "Creae Utility" has anything to do with what I am trying to achive.

Can anyone point me in the correct direction?

Thank you.

Re: Smooth AND Hard edges inside one Mesh

Its_jay — Tue, 05 Dec 2017 16:51:52 GMT

i think you looknig for this
for smooth part
first select edges / in modeling tab - under mesh display / select soften edge
this rule apply to hard edges but for that
you must select harden edges not soften
simply as that

Re: Smooth AND Hard edges inside one Mesh

Anonymous — Wed, 06 Dec 2017 10:12:10 GMT

Hey javaad! Thanks for taking the time, but unfortunately I am not working with any user-interface software to construct the models. I'm working with the FBX SDK construction the Meshes from C++ source code.

Aint no modeling tabs in my world 😉

Cheers

Re: Smooth AND Hard edges inside one Mesh

Anonymous — Fri, 08 Dec 2017 07:35:16 GMT

:smileyvery-happy nice, any suggestion ?

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Smooth AND Hard edges inside one Mesh

Re: Smooth AND Hard edges inside one Mesh

Re: Smooth AND Hard edges inside one Mesh

Re: Smooth AND Hard edges inside one Mesh