Transform path to follow an arc

I think you are on the right track. You just can’t see it very well due to the fact that your y is pretty plain. Try changing the line:

float y = sin(angle)*factor;

to

float y = sin(2*angle)*factor;

You will have what you are looking for. Also, the graph will only connect the start and end depending on if the modulation of the radius and y has the same phase.

@kfrajer has a much better example in the link that he posted.

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