Grasshopper

algorithmic modeling for Rhino

3(4) ways to extract a mesh from a rectilinear scalar field

3(4) ways to extract a mesh from a rectilinear scalar field

Isosurface extraction using a rectilinear scalar field (here distance from a mesh)
1) Classical marching cubes using iso-surface from Millipede
2) Marching tetrahedrons (Paul Bourke)
3) Naive surface nets/dual countouring without smoothed vertex (Mikola Lysenko)
4) Naive surface nets/dual countouring with smoothed vertex (Mikola Lysenko)

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Comment by Laurent DELRIEU on February 6, 2016 at 1:15pm

The bottom left is "Naive surface nets/dual countouring with smoothed vertex"  

like 
Mikola Lysenko
http://0fps.net/2012/07/12/smooth-voxel-terrain-part-2/

and like Jens Pedersen

http://www.grasshopper3d.com/video/naive-nurface-nets

The color are just random colors to show the polygon. 

Comment by Pieter Segeren on February 6, 2016 at 12:57pm

The bottom left bunny is nr 3, right? What are the colours based on Laurent?

Comment by Laurent DELRIEU on February 6, 2016 at 11:29am

Animated gif of the process from cubes to smooth. 

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