Ruby de 陰毛

generate.rb

# coding: utf-8

require 'cairo'
require './inmou.class.rb'

width = 256
height = 256
amount = 16
length = 1
curly = 30

surface = Cairo::ImageSurface.new(width, height)
context = Cairo::Context.new(surface)

context.set_source_rgba(1, 1, 1, 1)
context.rectangle(0, 0, width, height)
context.fill()

context.set_source_rgba(0, 0, 0, 1)

inmous = []

i = 0
while(i < width)
	inmou = Inmou.new(
		context, 
		i + (width / amount / 2), 
		height + height / 6, 
		(height / 6) * length, 
		Math::PI, 
		5, 
		curly
	)
	inmous << inmou
	i += width / amount
end

inmous.each do | inmou | 
	20.times do ||
		inmou.grow()
	end
end

surface.write_to_png('inmou.png')

inmou.class.rb

class Inmou
	def initialize(context, startX, startY, length, angle, branchWidth, curly)
		@context = context
		@curly = curly
		@maxAngle = @curly * Math::PI / 180

		@angle = angle
		@length = length

		@startX = startX
		@startY = startY
		@endX = @startX + @length * Math.sin(@angle)
		@endY = @startY + @length * Math.cos(@angle)

		@branchWidth = branchWidth
	end

	def grow()
		@context.set_line_cap('ROUND')
		@context.set_line_width(@branchWidth)

		@context.move_to(@startX, @startY)
		@context.line_to(@endX, @endY)

		@context.stroke()

		@angle = @angle + Random.rand(1.0) * @maxAngle - @maxAngle * 0.5
		@length = @length * (0.7 + Random.rand(1.0) * 0.3)

		@startX = @endX
		@startY = @endY

		@endX = @startX + @length * Math.sin(@angle);
		@endY = @startY + @length * Math.cos(@angle);

		@branchWidth = @branchWidth * 0.8
	end
end