#!/usr/bin/ruby -w require 'RMagick' # Demonstrate the Image#color_floodfill method before = Magick::Image.new(200,200) { self.background_color = 'white' } before = before.border(1,1,'black') circle = Magick::Draw.new circle.fill('transparent') circle.stroke_width(2) circle.stroke('black') circle.circle(100,100,180,100) circle.fill('plum1') circle.stroke('transparent') circle.circle( 60,100, 40,100) circle.circle(140,100,120,100) circle.circle(100, 60,100, 40) circle.circle(100,140,100,120) circle.draw(before) aquamarine = Magick::Pixel.from_color('aquamarine') after = before.color_floodfill(100,100, aquamarine) after.crop!(after.columns/2, 0, after.columns/2, after.rows) result = before.composite(after, Magick::EastGravity, Magick::OverCompositeOp) line = Magick::Draw.new line.line(result.columns/2, 0, result.columns/2, result.rows) line.draw(result) #result.display result.write('color_floodfill.gif') exit