I have a mesh circle in the yz plane. The circle is the basis for a river on a ring spacestation. So i would like for the curve to meander a bit along the global x axis and a bit along whatever the tangent of the circle is at each point, but not along the normals of the circle. Using the set position node to randomize the curve vertices in the global x axis is easy, but how can i add random offsets in the tangential direction at each vertex?
The attached image shows a tiny segment of the circle on the left and i drew the shape i want to achieve on the right.