I'm working on an SVG with a closed shape, and I'd like to create a series of concentric bands around it. These bands should gradually transition from the initial shape to a perfect circle, similar to this effect: https://cdn.atdt.co/15c8/reference-sunken-logo.jpg

Can this be achieved in Inkscape?

Here's what I've managed so far using the Interpolate extension: https://cdn.atdt.co/582d/interpolate_extension_interpolate_between_paths.png

It's close, but some bands touch or overlap the inner bands or the original shape. My goal is for each band to be a clean expansion of the previous one, without any intersections or overlaps. It seems the interpolation isn't consistently pushing the bands outward.

Not so easy as it looks. I guess it´s because of the vertices (nodes) order and different amount in the 2 objects.

I tried a converted polygon with the same amount of nodes for the circle and it won`t work as expected: A

I tried to manually adjust the number of nodes to the center object and place them. In addition, it was necessary to open one node on each opposite side so that Inkscape knows where the beginnings and ends are: B

Congratulations !

I tried my best but didn't achieve anything interesting. I see that key is in the proper placement of nodes on the circle.

Some ideas :

• combine both paths and use interpolate sub paths LPE : more interactivity when placing nodes
• duplicate the outer circle (and send duplicate to bottom) and enable snapping to smooth nodes and paths to ease placing / moving nodes on outer circle.
• once happy with the result, it will be better to flatten, remove outer circle and replace it by the duplicate (outer circle isn't that smooth once adding / moving nodes).
• you may want to use guides to know approximately where to put nodes on outer circle : draw a line : place one node on one of the nodes of the circuit (use snapping) and the second in the direction where you want it to go, then press shift+ G to convert this line to guide.

Wow — thank you both! I must admit I wasn't expecting such detailed and helpful responses.

This gives me quite a few things to try out. Polygon's result looks pretty close to the reference image, so I am curious to see if I can replicate it. I am also planning on trying the suggestions from #3.