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Is there any way to fill such a shape with faces? It would help a lot!

enter image description here

I'm trying to create something like this, but I have to do it for a lot of leafs. So doing it manually will be a pain.

enter image description here Source: https://free3d.com/3d-model/leaf-high-resolution (RobertFreitag)

Of course I could use a more rough shape and use the alpha more, but the alpha is very heavy in big scenes.

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    $\begingroup$ Hello, it's a bit vague, what kind of faces? a simple grid? what are you trying to achieve at the end? $\endgroup$ – moonboots May 24 '20 at 10:43
  • $\begingroup$ Thanks, I have edited the post to make it more clear. $\endgroup$ – Vince May 24 '20 at 10:45
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Ok so I'm under pressure and I feel the need to edit.

I gave you the method to print a grid topology on your mesh because that's what you asked. But, unless you have good reason to use this kind of topology, it is actually not very good. You should better use this kind of topology (coming from a previous question of BSE), which use only quads, can easily be bent and modified with new edge loops, etc. In your case, if you want to keep your current mesh, you can first simplify it with some Checker Deselect and Dissolve Vertices, then fill with F and cut some edges with the knife:

enter image description here

Former answer:

What you can do is first fill your shape with a single face (F), create a plane, subdivide it to have a grid, delete its faces only, back to Object mode put it over the leaf object, Shift select the leaf, stay in top view, go in Edit mode, then Mesh > Knife Project. It will print the square grid on the leaf mesh.

enter image description here

Once filled, you could also give your face several knife cuts, it will create less faces.

enter image description here

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    $\begingroup$ I was just going to suggest this. Good man. :) $\endgroup$ – R-800 May 24 '20 at 10:55
  • $\begingroup$ Thanks a lot you both! Nice solution! $\endgroup$ – Vince May 24 '20 at 11:02
  • $\begingroup$ that's a solution, but it's the worst topology ever. So why even bothering creating subdivision? $\endgroup$ – Sanbaldo May 24 '20 at 11:03
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    $\begingroup$ yes I know but that's customer's request ;) well actually it might be useful in some cases, I don't know, that's why I asked what was his final purpose $\endgroup$ – moonboots May 24 '20 at 11:03
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    $\begingroup$ again, it really depends on what's the final purpose, at the beginning I just purely answered the question, which was how to make a grid, then I gave an alternative, it can be reworked, it can be kept as it is, depending on tons of things, for example if it's for a low-poly style, with no subsurf, you don't care if you have ngons, plus it was just for demonstration $\endgroup$ – moonboots May 24 '20 at 17:26
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Hope this helps, you can do a few freehand adjustments after this tool, like "k"knife, Disolve edges, add vertex, etc, to get a perfect mesh

enter image description here

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  • $\begingroup$ Thanks for your answer Fabian. The grid fill option gives overlapping faces due to the irregular shape. But the smooth brush to ease the topology is a great addition! $\endgroup$ – Vince May 25 '20 at 18:19
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I did it this way because I couldn't comment with images. This is the method I used now, based on moonboots help.

Step 1: Import image as plane -> knife project the shape on the image to cut the leaf out and remove excessive alpha.

enter image description here

Result:

enter image description here

enter image description here

Step 2: Cut some rough edges with the knife tool.

enter image description here

Step 3: Triangulate to remove the remaining ngons. Then used tris to quads to remove excessive tris. (when triangulating right away before cutting with the knife tool, the result is not usable to bend the leaf.)

enter image description here

Step 4: Added some bend with proportional editing and a displacement texture.

enter image description here

I'm quite happy with the method now, but maybe there is a way to prevent even the last tris. The important thing is to keep it fast, because I have to do a lot of different leaves. I can't think of a fast method to prevent tris in the last step. So I thought I must accept the remaining few tris, cause I can't see how they would cause problems.

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