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| var perlin = require('perlin').noise.perlin3 | |
| var fill = require('ndarray-fill') | |
| var zeros = require('zeros') | |
| var scale = 0.075 | |
| var threshold = 0.125 | |
| // Untested in 3D, but "theoretically" this should | |
| // work. Using the equivalent 2d getter with the | |
| // continuous-box2d demo works well. | |
| var field = require('ndarray-continuous')({ | |
| shape: [32, 32, 32], | |
| getter: function(position, done) { | |
| var shape = this.shape | |
| var array = zeros(shape) | |
| fill(array, function(x, y, z) { | |
| return perlin( | |
| (position[0] * shape[0] + x) * scale | |
| , (position[1] * shape[1] + y) * scale | |
| , (position[2] * shape[2] + z) * scale | |
| ) > threshold ? 0 : 1 | |
| }) | |
| return done(null, array) | |
| } | |
| }) |
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