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ok, take 2. I need a circular plane subdivided with parallel subdivisions. (My initial attempt I was hoping I could transform a rectangular plane somehow.)

The end result I need is going from a disc curled up into to tube, to the disc laying out flat. I created some subdivisions manually on a circle by selecting 2 vertices and connecting with F.

I also managed to modify the circle with a curve modifier so now it rolls up in the spiral.

enter image description here

enter image description here

But, the two questions I have are these:

  1. how do I give it a solid surface as automatically happens when you add a mesh plane. I need it to unroll smoothly, so hopefully I can use cloth modifiers and shading. 1a) why is the mesh plane solid and the mesh circle is not?

  2. I want to unroll the subdivided circle out from the spiral while the spiral remains in a fixed position. (I don't want the spiral to move. Everything I have found up to now moves the spiral--but I can work with that if it comes down to it.)

It doesn't really matter that the divisions are uneven, but it would be nice if they were. I also have a picture I need to map to the surface of the circle.

Blender V2.81.16 on Windows

Thanks in advance.

*Edit: In object mode I can move the paper in and out of the spiral, and vice versa. But if I set a keyframe location for either object I can no longer move the disc, just the spiral.

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  • $\begingroup$ Nothing is the default fill type of a circle. Change to another option to fill on creation. Select 2 verts F creates an edge, 3 or more a face. The step where you created the edges, could instead make faces. (Add a plane loop cut, then too sphere would be another suggestion). Did you attempt moving the disc instead of the spiral? $\endgroup$
    – batFINGER
    Commented Oct 23, 2020 at 9:03
  • $\begingroup$ in object mode I can move the paper in and out of the spiral, and vice versa. But if I set a keyframe location for either object I can no longer move the disc, just the spiral. I'll have a look and see if I can find the option to change to a different fill setting. Thanks. $\endgroup$
    – byakk0
    Commented Oct 23, 2020 at 20:02
  • $\begingroup$ You can grid fill the circle, that would allow for better deformation. $\endgroup$
    – Timaroberts
    Commented Oct 23, 2020 at 22:19
  • $\begingroup$ I got it working. Had to hunt around for the option location for creating the circle. $\endgroup$
    – byakk0
    Commented Oct 24, 2020 at 0:03

1 Answer 1

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batFINGER had the answer I needed. Filling the circle also somehow resolved the animation problems I was having. I created a new circle just to play with the options, but I actually just filled the subdivided circle I already created.

Thanks!

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