Sinus Displacement

The Sinus Displacement modifier adds a sinusoidal displacement to the stroke.

Wavelength
How wide the undulations are along the stroke.
Amplitude
How high the undulations are across the stroke.
Phase
Allows « offsetting » (« moving ») the undulations along the stroke.
../../../../../../_images/render_freestyle_parameter-editor_line-style_modifiers_geometry_sinus-displacement-example.png

Sinus Displacement modifier demo by T.K. (blend-file).