Grasshopper: Saddle Skin with Box Morph & Attractors

This tutorial contains 3 parts:
1. Creating the saddle or 'pringle'surface by inserting Mathematical function of Hyperbolic Paraboloid
2. Morph the saddle onto a surface
3. Use an attractor to generate saddle of varied heights
Some components involved: Surface Box, Box Morph, Bounding Box, Curve Closest Point, Remap, Evaluate, Diamond Panel(Lunchbox plug-in)
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