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I have the following cylindrical shape:

enter image description here

I want to transform it so that it is not straight, but tapers out. I imagine that I want to scale it in such a way that the bottommost vertices are scaled by 1.5 on the x and y axes, and the topmost vertices are scaled by 1, so they are technically not scaled at all. All the vertices in between should therefore be scaled by a factor between 1 and 1.5, based on how high up the Z axis they are. If I have it all straight, I think that should result in a perfectly conical shape.

Is there a way to do this? Am I overthinking it and is there a sort of taper tool?

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    $\begingroup$ so that it is not straight, but tapers out. > it's not straight to begin with. what are you trying to accomplish? why not model it again since the toplogy is horrible. $\endgroup$
    – Harry McKenzie ♦
    Commented Jul 14, 2023 at 9:06
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    $\begingroup$ To me this sounds as if you wanted to do Proportional Editing with a linear falloff. $\endgroup$
    – Gordon Brinkmann
    Commented Jul 14, 2023 at 9:59
  • $\begingroup$ Might be easier to control with a lattice modifier $\endgroup$
    – Allen Simpson
    Commented Jul 14, 2023 at 14:05
  • $\begingroup$ It is straight, along the z axis. The topology with the weird curves is necessary for a shader that will be applied. The proportional editing/linear falloff is exactly what I was looking for, thanks! $\endgroup$
    – Bas
    Commented Jul 15, 2023 at 16:09

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Like others noticed, topology is "bad"(meaning difficult to work with) so you should probably consider remodelling it. Else than that, you can select some geometry on top and use proportional editing with linear falloff to scale:

enter image description here

You could also hit Shift + Z to constrain scaling to XY plane while in scaling operation. Also while adjusting the radius with mouse wheel or Page Up / Page Down don't forget you can hold Shift for more precision.

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  • $\begingroup$ I can't change the topology due to shader reasons that rely on these vertex positions. However, proportional editing with linear falloff was exactly what I was looking for. Thanks! $\endgroup$
    – Bas
    Commented Jul 15, 2023 at 16:16

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