Hi, I’m wondering how one would go about making a “flattener” type modifying technique to: Take a torus geometry and flatten “to taste” the top and bottom of the poles of it… (Considering its the usual horizontal orientation) Imagine a torus sliced into horizontal sections. How would I go about…

[image] GlifTek: Imagine a torus sliced into horizontal sections. Seems it’s not a torus geometry at all, but several lathe geometries.

Wow both your guys suggestions on that thread are great. I’ll check them out. Thanks

Actually I wonder if I made a circle with a displacement map of horizontal stripes on it, then lathed THAT… To have the non displaced stripes be the only ones extruded along the lathe…hmmm what do you guys think? Hmm but although the displacement will flatten, it would never completely “cut” or dis…

A very rough, thus imperfect :upside_down_face:, solution with LatheGeometry: Example: https://jsfiddle.net/prisoner849/1j3usg5o/ Picture: [изображение]

Don’t know if I understood the task correctly, but how about this? TorusFlat [2021-02-19 18.05.06]

Hey thanks for that example. That’s what I needed for the non-sliced version.

Very cool. I’ll be trying this thanks!

is this where you did the flattening…? let v = new THREE.Vector3(); for( let i = 0; i < pos.count; i++ ){ v.fromBufferAttribute( pos, i ); pos.setZ( i, Math.abs( v.z ) > 0.3 ? Math.sign( v.z ) * 0.3 : v.z ); }

Of course, that’s all there is to the program. :slightly_smiling_face: You can also do it asymmetrically. [2021-02-20 17.19.20] const a = 0.4; const b = -0.1; for( let i = 0; i < pos.count; i++ ){ v.fromBufferAttribute( pos, i ); //pos.setZ( i, Math.abs( v.z ) > 0.3 ? Math.sign( v.z ) * 0.3 …

Best way to flatten the top and bottom of a torus geometry

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mjurczyk February 18, 2021, 9:28am 2

Since it starts with a super-flat torus, and then just expands it according to your needs and the displacement map - this solution could likely be also used here.

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Best way to flatten the top and bottom of a torus geometry

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