This definition elevates a curve according to a slope (%). It doesn't matter if the referenced curve is planar or not. It works with the GH Player.
1. This definition was created with the aim to be used as a prior step to add a path on a Lands Design terrain (_laTerrainAddPath). (https://www.landsdesign.com/)
2. It can be used with the Grasshopper Player command in Rhino (_GrasshopperPlayer). No knowledge of GH is required to run it.
3. The accuracy of the resulting Slope Curve depends on the initial number of control points existing in the Referenced curve.
4. It doesn't work with polylines.