Geometry nodes-based spline manipulation - A folding and unfolding spiral setup example with instancing.

An other example, using the same technique here.

A base curve line and a spiral is combined, then unified, so it forms one continuous curve. The shape of the curve is achieved by A Float Curve node. The whole setup is completely procedural (The leaf's shape, the branch placement and so on).

The recombination of the spiral and it's base curve line (stem) makes it possible to create the unfolding spiral, which can be shaped by its curve radius and treated and textured as one, continuous curve.

There are two blends included -

1. The full setup

2. A simplified version of a curve turned into unfolding spiral with a texturing example.

Happy Blending !