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The Nephroid path effect applied to a sample shape
Curves

Nephroid

Ray-tracing diagrams and lens teaching figures need the two-cusp caustic at a chosen resolution, so the point count is the only thing on offer.

Open in the editor More curves path effects
FamilyCurves
Parameters1 adjustable
On canvas handlesno, adjust it in the panel
Destructiveno, the original path is kept
LicenceFree for commercial use

The 1 control

Nothing here is baked in. Every value stays live on the object for as long as the file exists, so you can come back and retune it, reorder it against other effects, or take it off and get your original path back exactly as you drew it.

  1. Points60 to 6000, default 400

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