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Ok I found this question with no answers - Sine wave on a ring and How do I make a curve in the shape of a simple wave form (sine)? to make a sine curve. I need what the first question asked for -
I now have the sine wave curve, but I need it to go around in a circle. How can I achieve this?
EDIT:
Via the UI:
Simple Deform... modifier.
for any sine wave with a whole number of cycles, created aligned to world axes
Simple script
Translate the circle primitive into a sine wave. The primitive circle distributes the verts x, y coords in a circle.
The z coordinate is adjusted to oscillate in a sine wave.
import bpy
from math import sin, pi
verts = 128 # verts per circle
radius = 1 # radius of circle
freq = 16 # how many phases of sin wave
amp = 0.1 # amplitude of wave
# angle per vert
apv = freq * 2 * pi / (verts)
context = bpy.context
bpy.ops.mesh.primitive_circle_add(
vertices=verts,
radius=radius)
ob = context.object
me = ob.data
for v in me.vertices:
v.co.z = amp * sin(v.index * apv)
me.update()
