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I would like to create independent tortoiseshells meshes from a boolean mask. The boolean mask would be used to cut in the plane automatically.

The method I am using at the moment is to use the cut knife and cut through a plane by hand. I am following the curves of the reference image, here a crocodile skin, to finally obtain independent tortoiseshells meshes.

enter image description here

I am pretty sure it should be possible to use a boolean image to directly cut through the plane with it but I didn't find anything online to help me. Here is an example of a boolean version of the crocodile skin.

enter image description here

Thank you in advance for your answers.

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  • $\begingroup$ it happens often that people ask here for x to achieve y. But there might be quicker and faster ways to do that. So maybe you can tell us a bit more of your end goal? So maybe you could be surprised be the answers... ;) $\endgroup$
    – Chris
    Nov 18, 2022 at 7:10
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    $\begingroup$ @Chris , it is for 3d printing. The end result should be separated tortoiseshells that could be manipulated like a puzzle :) (I hope it helps) $\endgroup$
    – Andrew Karam
    Nov 18, 2022 at 7:24
  • $\begingroup$ ah, that helps a lot! because what came up to my mind instead of cutting the shapes...i would generate them with geometry nodes ...or other tools. $\endgroup$
    – Chris
    Nov 18, 2022 at 7:34
  • $\begingroup$ Do you know any geometry node tool using an image as reference to perform action? $\endgroup$
    – Andrew Karam
    Nov 18, 2022 at 8:37
  • $\begingroup$ unfortunately no...but i think now others know what you wanna do and hopefully they will help ;) $\endgroup$
    – Chris
    Nov 18, 2022 at 9:01

1 Answer 1

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This could be a route..

First resolve your pattern to a bitmap. That could be via an external paint-package, or by picking up one of those readily available on the internet. If it's a must to take it from your personal reference, then if you provide it, we could have a go, but it's not strictly a Blender problem.

Once a bitmap, it can be ShiftA added to your scene as a Reference Image (That's an Image Empty).....

enter image description here

Once an Empty, 'Trace Image to Grease Pencil' is available in the Header > Object menu. Trace.

Then the Grease pencil can be converted to a curve. For some reason, on my machine, the curve refuses to fill, in its native Data tab > Curve > Fill settings. But a little Geometry Nodes modifier, with just one Fill Curve node, did the trick. At this point, you might want to Curve > Clean Up > Decimate the curve in Edit Mode, to get rid of excess vertices.

If you've gone down that road, the object can now be Converted > to Mesh. and you're more or less there:

enter image description here

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