https://github.com/mikolalysenko/isosurface

Isosurface polygonizer algorithms
https://github.com/mikolalysenko/isosurface

Last synced: 26 days ago
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Isosurface polygonizer algorithms

• Host: GitHub
• URL: https://github.com/mikolalysenko/isosurface
• Owner: mikolalysenko
• License: mit
• Created: 2013-01-15T16:26:50.000Z (almost 12 years ago)
• Default Branch: master
• Last Pushed: 2014-04-29T18:52:01.000Z (over 10 years ago)
• Last Synced: 2024-11-09T17:51:41.494Z (about 1 month ago)
• Language: JavaScript
• Size: 146 KB
• Stars: 186
• Watchers: 11
• Forks: 31
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
isosurface

==========

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

* [What is a solid?](http://0fps.wordpress.com/2012/08/29/what-is-a-solid/)

* Smooth voxel terrain [Part 1](http://0fps.wordpress.com/2012/07/10/smooth-voxel-terrain-part-1/) [Part 2](http://0fps.wordpress.com/2012/07/12/smooth-voxel-terrain-part-2/)

[Or try out a live demo](http://mikolalysenko.github.com/Isosurface/)

# Example

```javascript

var isosurface = require("isosurface")

var mesh = isosurface.surfaceNets([64,64,64], function(x,y,z) {

  return x*x + y*y + z*z - 100

}, [[-11,-11,-11], [11,11,11]])

console.log(mesh)

```

# Install

```

npm install isosurface

```

    

# API

```javascript

var isosurface = require("isosurface")

```

#### `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.

#### `isosurface..marchingCubes(dims, potential[, bounds])`

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

#### `isosurface.marchingTetrahedra(dims, potential[, bounds])`

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

# Credits

(c) 2012-2014 Mikola Lysenko.  MIT License