How to easily make a bunch of rectangles circular?

Lots of times after subdividing, I have a bunch of small rectangles leftover which form very rigid square shapes, but instead of sculpting, it seems like there should be some basic tool that makes patch of faces more circular.


you mean these?

Not really. I mean more like on a flat surface. Just imagine a flat surface that is subdivided into many rectangles, and then with one tool, how can that be made more round? What I’m looking for is closer to the “To Sphere” option.




one of these?
try to use screenshots with before+after results… we have no idea what ur talking about…

I mean I’ve explained it and it’s a very simple concept, it’s so simple that you already mostly got it right, it’s the top one of the two, basically that a set of rectangles should morph into a more circular shape (but without vertices being deleted).

Something like this?


One way with the looptools addon enabled:
-select all vertices (ctrl-a)
-select > select boundary loop
-w > LoopTools > circle

There is also a ‘To Sphere’ command (via spacebar). Select vertices, run the command and drag the mouse.

Not enough information, please attach your .blend or some images showing what you want.

All support questions in the modeling section should have a .blend file attached as the minimum.

Yeah that’s essentially what I’m looking for except a continuous version. I mean obviously I would have done that if it actually worked, but it’s no good to just slap a circle around everything when that has 0 effect on any of the other rectangles to gradually build them up to make a continuous transition. What I’m looking for is a continuous version of that circle morph so that all vertices gradually morph into a circle to the outer edge to varying degrees.

Which I mentioned doesn’t work, it leaves a giant bulge in the middle and just squishes everything else, it’s awful.

you could remove middle face and extrude to add more loops inside
till you get more or less rectangles
or use the grid fill may be !

you are sort of asking for auto square faces which we don’t really have

another way might be to simply add a nurbs surface which has only squares and convert to mesh !

you should also show more specific examples

happy bl

Simply adding circular loops doesn’t make the transition gradual, it just turns it into a complete circle. It’s an extremely simple concept, so the fact that no one knows of a solution by this point likely means blender doesn’t currently have the capabilities, at least not by default, but there may be an addon somewhere or something hidden in the user preferences.

well there is one modifier to make rectangles
but does not really work all the time so far from perfection

and in general Quads only is more difficult to do with Bmesh
only tool doing this in Bl is the nurb surface !

so hope someone can find a good re quad addon one day

happy bl

Are you saying that you think I’m looking to generate new quad surfaces? Because that’s not what I’m talking about, to do that I would only need Ctrl+F -> Grid Fill.

You mean something like this?


More or less yes. A more useful tool would make the transition to a circular edge much more gradual, it wouldn’t look like a mostly square arrangement that just suddenly changes into a circle at the last two edges as it does in your picture. I guess the Grid Fill does what I’m looking for but it doesn’t let you interpolate the degree of smoothing and you can only use it on faces that are already gone, you can’t change the topology as you need when using it.

You could just use a shape key. Have the start as the square/rectangle, the end the circle, and then slowly blend between the two using the shape key animation.

That’s…definitely not a valid process for general instances while simply editing an object. This is a concept that is meant for before the final product.

I have no idea what you are talking about. Would you be so kind to post a sketch of what you mean?

You should check out the Surface Constraint Tools addon:

There’s a smooth vertices function that works on selections and also can be set to lock the boundaries.
It also has a mesh brush that lets you move and smooth verts in a more custom way with a brush.
Despite the name of the addon these two functions also work without a second surface to constrain the mesh to.
((The mesh brush is buggy for me atm in 2.78 but works in 2.77, smooth vertices work in 2.78 for me.))
EDIT: No, actually works fine in 2.78, my bad.

If you want to smooth a non-flat mesh you could have a look at Kjartan Tysdal’s KTools:
http://www.kjartantysdal.com/scripts/

It has a shrinkwrap smooth tool that preserves the 3D form while smoothing.

Have your tried using Proportional Editing?

https://www.blender.org/manual/editors/3dview/object/transform/transform_control/proportional_edit.html?highlight=proportional
https://www.blender.org/api/htmlI/x3417.html