isosurface

Isosurface polygonizer algorithms in JavaScript. For more details, see the following blog posts:

http://0fps.wordpress.com/2012/08/29/what-is-a-solid/

http://0fps.wordpress.com/2012/07/10/smooth-voxel-terrain-part-1/

http://0fps.wordpress.com/2012/07/12/smooth-voxel-terrain-part-2/

Or try out the following live demo:

http://mikolalysenko.github.com/Isosurface/

Usage

First, install the library via npm:

npm install isosurface

require("isosurface").surfaceNets(dims, potential[, bounds])

Extracts an isosurface from potential using surface nets with resolution given by dims.

Params:

• dims: A 3D vector of integers representing the resolution of the isosurface
• potential(x,y,z): A scalar valued potential function taking 3 coordinates as arguments returning a scalar.
• bounds: A pair of 3D vectors [lo, hi] giving bounds on the potential to sample. If not specified, default is [[0,0,0], dims].

Returns: A mesh object with the following members:

• positions: The coordinates of the vertices of the mesh
• cells: The faces of the mesh.

require("isosurface").marchingCubes(dims, potential[, bounds])

Same as above, except uses marching cubes instead of surface nets to extract the isosurface.

require("isosurface").marchingTetrahedra(dims, potential[, bounds])

Same as above, except uses marching tetrahedra instead of surface nets to extract the isosurface.

Acknowledgements

(c) 2012-2013 Mikola Lysenko. MIT License