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Sorry if this is a basic question, I am coming from a scientific field and have begun to use blender more and more, and it is just amazingly powerful. But, sometimes I find that to do precision type work and have precise control over meshing is a bit hard because the workflow is not really set up for that (I think?).

Basically, I have a mesh. I want to draw a polyline on this mesh, but not where any edges/vertices are currently occupying. Then I want to remesh the mesh and have edges/vertices snap to this polyline.

Is this possible in Blender?

See below schematic of what I'm attempting to do.

I have my target mesh that I'm trying to remesh, and I created a Curve>Path object t use as my snapping line.

Any advice would be appreciated.

current

goal

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  • $\begingroup$ I was able to find an approach by converting the curve to a mesh, shrink wrapping it to the target mesh, then deleting the faces of the target mesh in and around the curve, then joining both meshes to a single mesh and filling in the faces again...but there has to be a better way $\endgroup$ – Derek Eden Nov 11 '20 at 16:34
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    $\begingroup$ It seems to me Kinfe Project might be useful to you in this situation. (It cuts along the angle of the camera; so what you see is what you get,) You can convert your curve object (I assume the poly line is one) to a mesh by selecting it and using ALT + C and choose Mesh from Curve/Meta/Surf/Text. $\endgroup$ – Fjoersteller Nov 11 '20 at 16:41
  • $\begingroup$ By the way, the cutting object can be a mesh or curve. No need to covert it. My mistake. $\endgroup$ – Fjoersteller Nov 11 '20 at 16:48
  • $\begingroup$ this was definitely helpful and did achieve more or less what I was after .. I still need to explore how I could have more control over the spacing and remeshing around this perimeter. If you want to add as an answer I will accept @Fjoersteller $\endgroup$ – Derek Eden Nov 12 '20 at 4:00
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In response to you comments:

Apart from the Knife Project and using a Shrinkwrap Modifier, the only thing i can think of, is using a Shrinkwrap Modifier with a specific Vertex Group. You would have to manually select the vertices around the edge of the polyline mesh object.

enter image description here

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If the vertices need to stay on the same height you could also extrude the polyline mesh object and have the Shrinkwrap Mode: set to surface.

For the "more control over the spacing and remeshing" (if you were to delete any unwanted faces) the commands Grid Fill and Triangulate Faces might come in handy. And possibly Randomize to make it look more organic afterwards.

That's all i got. Hope it helps. In any case, good luck. : )

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  • $\begingroup$ Appreciate it. Thanks $\endgroup$ – Derek Eden Nov 13 '20 at 1:27

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