How can I divide a circle into a square grid? Think of the subdivision of a plane, but with a circular border. It should look something like this, just imagine that the circle select cursor is the border:

enter image description here

I searched everywhere for an answer, but I could not find any. Any help will be appreciated!


This is how I do it: gridify circle

  1. Create a circle and put it a little over the grid plane;
  2. In Object mode select the circle first, then add the plane to the selection, by pressing ⇧ ShiftRMB RMB (the order is important);
  3. Go to top view (Numpad 7) in Orthographic View (toggle with Numpad 5);
  4. Go in Edit mode with ↹ Tab;
  5. Be sure to have all the meshes selected (hit A);
  6. In the T panel (or just by searching with Space) find Knife project and click it.
  7. Invert the selection with Ctrl+I
  8. Delete the selected mesh parts with X.

Like LukeD said in another answer, this causes your mesh to have a mix of ngons, quads and tris, but that's what you asked for in your question. :-)

  • $\begingroup$ This looks like the answer I'm looking for. I'll try it. $\endgroup$
    – Tooniis
    Jan 23 '17 at 19:16
  • $\begingroup$ Also I don't care about the ngons and tris in the edges because I'm not going to modify them. I'm only going to modify the quads. $\endgroup$
    – Tooniis
    Jan 23 '17 at 19:17

You can do with the F2 Addon Select 2 vertex and press f to make a edge Then Press F to make vertical edges same with the horizontal edges enter image description here

  • 1
    $\begingroup$ Why did you double my answer? $\endgroup$
    – cgslav
    Jan 23 '17 at 12:39
  • $\begingroup$ actually i answered and did not refresh somebody answered it after refresh my answer was below yours sorry $\endgroup$
    – atek
    Jan 23 '17 at 12:44
  • 5
    $\begingroup$ The results don't look at all the same. $\endgroup$
    – StarWeaver
    Jan 23 '17 at 13:00
  • 1
    $\begingroup$ Despite the final result looks like a grid, the horizontal and vertical edges built with this approach are disjoined: you are building two overlapping sets of faces. Perhaps it would be better to finish with Vertex Connect Path tool or something in order to truly subdivide the edges. $\endgroup$
    – Carlo
    Jan 23 '17 at 18:04
  • 2
    $\begingroup$ I did that with the knife but soon realised that it is not a perfect square grid. $\endgroup$
    – Tooniis
    Jan 23 '17 at 19:16

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