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Goal: I use the "distribute points on faces" node on faces that form a narrow cylinder (a "ring"). the points should create groups that resemble evenly distributed stripes across the ring (along the x axis).

Current solution: Since the ring plane is parallel to the y axis i look at sin(y) of the rings position as constraint for the selectionenter image description here.

Problem: This creates stripes but they get wider and wider towards the "sides" of the ring. How do I formulate this logic so that the stripes width is constant? enter image description here

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2 Answers 2

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Instead of using distribute points on faces, you can use mesh to points node. That way you can convert each face to a point and instance the stripes on them. Capture the normals first so you can rotate the instances accordingly

enter image description here

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  • $\begingroup$ I prefer your solution because its ultimately easier to create faces in the shape i need first and then put points on them. directly controlling the point distribution is difficult and vague. In the end i got some nice striped forests on my spacestation: imgur.com/a/hbo8f14 $\endgroup$
    – sinwar
    Nov 20, 2023 at 21:27
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tbh this is more a mathematical than a geometry nodes question...but anyway.

The trick is here to use the angle, so that you can get an even distribution:

enter image description here

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  • $\begingroup$ Im sorry i couldnt reproduce your result at all in Blender 4.0.1 imgur.com/a/34XWrNb $\endgroup$
    – sinwar
    Nov 20, 2023 at 18:00
  • $\begingroup$ then pls use exactly (!) my node tree ...and not something different. thx. and of course it depends on what the size of the cylinder is. $\endgroup$
    – Chris
    Nov 20, 2023 at 18:30

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