Divide the curve forming the surface

Prompt please how to divide the curve forming a surface as if it was projected on the YZ plane.

surface.3dm (40.8 KB)
divideСurve.gh (5.3 KB)

And is it possible to do it as a means Grasshopper, and at the same time as specifying a surface from Rhino to leave only the Grasshopper, 3ds files were not needed

Prompt please how to divide the curve forming a surface as if it was projected on the YZ plane.

Look into components like project and contour.

And is it possible to do it as a means Grasshopper, and at the same time as specifying a surface from Rhino to leave only the Grasshopper, 3ds files were not needed

right click the component that has rhino geometry referenced and select internalize.

internalization is great, thank you!