Sha256: f78f79353e6af89cceb137a5c105dcb0aa93d54dad320b551322c3b021af3430
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Contents
require 'ruby-processing'
# * Demonstrates the syntax for creating a two-dimensional (2D) array.
# * Values in a 2D array are accessed through two index values.
# * 2D arrays are useful for storing images. In this example, each dot
# * is colored in relation to its distance from the center of the image.
class Array2d < Processing::App
def setup
distances = Array.new( width ) { Array.new( height ) } # [width][height]
max_distance = dist( width/2, height/2, width, height )
width.times do |x|
height.times do |y|
distance = dist( width/2, height/2, x, y )
distances[x][y] = distance / max_distance * 255
end
end
background 0
x = 0; while x < distances.length
y = 0; while y < distances[x].length
stroke distances[x][y]
point x, y
y += 2
end
x += 2
end
end
end
Array2d.new :title => "Array 2d", :width => 200, :height => 200
Version data entries
9 entries across 9 versions & 1 rubygems