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I want to project a mesh onto a spherical surface. For this I use the ShrinkWrap modifier. With the edge it works very well. But it doesn't work with the face because I can't generate a grid.

  1. Draw a flat closed Bezier Curve
  2. Convert to mesh
  3. Fill mesh

a. Grid Fill doesn't work here because the vertices are irregularly distributed.

b. I can't draw edges manually because I need vertices at the intersection points. I don't know about that, especially when I have > 100 intersections.

  1. Project the mesh onto a UV Sphere using ShrinkWrap modifier.

enter image description here

Can someone give me a tip to solve the puzzle or to simplify it? Thanks...

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2 Answers 2

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You can use the Knife Project tool. First fill your face:

enter image description here

Create another object (a plane), subidivide it, delete the faces only, put it over the first object:

enter image description here

Select your first object, switch to Edit mode, select the plane with CtrlLMB, then header menu > Mesh > Knife Project:

enter image description here

Now your object has a topology that can be bent:

enter image description here

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  • $\begingroup$ Great that helped me really!!! $\endgroup$
    – PowerNow
    Commented Sep 6, 2022 at 16:23
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I know you didn't ask for this originally, but here would be a solution using Geometry Nodes:

enter image description here

First I convert the curve into a mesh and extrude it upwards.

At the same time I use Object Info to get the sphere and mark its faces with a boolean value and the node Capture Attribute.

Then I use Mesh Boolean to cut the previously extruded object.

After that Separate Geometry can be used to separate the part of the intersection.

Finally, only the edges adjacent to more than one face have to be removed.


If you want to keep the generated area instead, you can solve it this way:

enter image description here


(Blender 3.1+)

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  • $\begingroup$ quellenform: Thanks for your proposal, but I have no experience with Geo Nodes. Maybe its time to start with them... $\endgroup$
    – PowerNow
    Commented Sep 7, 2022 at 11:26
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    $\begingroup$ @PowerNow It's never too late for Geometry Nodes! ;-) $\endgroup$
    – quellenform
    Commented Sep 7, 2022 at 11:26

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