Uniformly Distributed Perlin Noise

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I thought I would compare JRubyArt noise (derived from KdotJPG OpenSimplex2) to see how that would fare, here is the test code:-

load_library :uniform_noise

java_import 'micycle.uniformnoise.UniformNoise'
java_import 'java.awt.Color'

OCTAVES = 4

def setup
  sketch_title 'Uniform Noise Test'
  load_pixels
  @unoise = UniformNoise.new
end

def draw
  grid(width, height) do |x, y|
    val = if x < width / 2
            (noise(x * 0.015, y * 0.015, frame_count * 0.035) + 1) / 2
          else
            @unoise.uniform_noise(x * 0.0085, y * 0.0085, frame_count * 0.01, OCTAVES, 0.5)
          end
    col = Color.HSBtoRGB(val, 1, 1)
    pixels[y * width + x] = col
  end
  update_pixels
end

def settings
  size(800, 800)
end

Here is the result

noise_test
noise_test800×824 244 KB

The uniform noise is clearly the winner here, but OpenSimplex2 is an improvement over the processing “perlin noise”. There is even a variation that is more suitable for creating terrains.

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