Sha256: c08c576f5ebd072a78e2f8cad16dbbe82156b31772e01f1582f40d6a1d7bf652
Contents?: true
Size: 881 Bytes
Versions: 16
Compression:
Stored size: 881 Bytes
Contents
#!/usr/bin/env ruby
# Koch curve
require("gsl")
include Math
ONE_UNIT = 3
def koch(x, y, theta, size, order, file)
if order == 0
x += cos(theta)*size
y += sin(theta)*size
file.printf("%e %e\n", x, y)
else
x, y = koch(x, y, theta, size/3, order-1, file)
theta += Math::PI/3
x, y = koch(x, y, theta, size/3, order-1, file)
theta -= 2.0*Math::PI/3
x, y = koch(x, y, theta, size/3, order-1, file)
theta += Math::PI/3
x, y = koch(x, y, theta, size/3, order-1, file)
end
return [x, y]
end
SIZE = 243
ORDER = 4
x = 0.0
y = 0.0
theta = 0.0
IO.popen("graph -T X -C -N x -N y", "w") do |io|
io.printf("%e %e\n", x, y)
x, y = koch(x, y, theta, SIZE, ORDER, io)
theta -= 2.0*Math::PI/3
x, y = koch(x, y, theta, SIZE, ORDER, io)
theta -= 2.0*Math::PI/3
x, y = koch(x, y, theta, SIZE, ORDER, io)
theta -= 2.0*Math::PI/3
end
Version data entries
16 entries across 16 versions & 4 rubygems