Turn voxel models into foldable origami! For example, you can turn this mario model:

Into this foldable model:

If you want to try making a Mario yourself, here is a PDF in A4 format.

This module works in any reasonable CommonJS environment (includes node.js and browserify). You can also use it with the voxel critter creator (select "Export Orthogami").

//First create a voxel set
//  0 = empty
var voxels = require('ndarray-pack')([
  [[0, 1],
   [2, 3]],
  [[0, 0],
   [0, 4]]
])

//Require the module (works with browserify)
var orthogami = require('orthogami')

//Set up options (can skip this if you like)
var options = {
  units: 'mm',            //Units
  bounds: [210, 297],     //Page size
  scale: 10,              //Size of voxel
  lineWidth: 0.1          //Size of dashed line
}

//Then run orthogami
var svgs = orthogami(voxels, options)

//Print out the result
var fs = require('fs')
svgs.forEach(function(svg, idx) {
  fs.writeFileSync('page' + idx + '.svg', svg)
})

npm install orthogami

Generates an origami template for folding a model from the given voxel object.

• voxels is a 3D ndarray of integer values. 0 values indicate empty voxels.

• options is an optional object containing any of the following extra parameters:

  • colorMap a function mapping color values in the voxels to SVG color names, or alternatively an array of SVG color names.
  • bounds a 2D array representing the size of each page (default [Infinity, Infinity])
  • scale a number giving the size of each voxel (default 64)
  • convexColor the color of the convex creases (default 'black')
  • concaveColor the color of the concave creases (default 'white')
  • tabColor the color of the tab lines (default 'black')
  • lineWidth the width of the crease lines (default 1)
  • units the units for the coordinate system (default 'px')

Returns An array of SVG files encoding the pages of the origami printout

(c) 2014 Mikola Lysenko. MIT License