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  1. #coding: utf-8
  2. require 'dxruby'
  3.  
  4. ITER_COUNT = 16
  5. BASE_X = 100
  6. BASE_Y = 100
  7. SIZE = 100
  8. MARGIN = 100
  9.  
  10. WINDOW_WIDTH = 1600
  11. WINDOW_HEIGHT = 900
  12.  
  13. Window.x = 0
  14. Window.y = 0
  15. Window.width = WINDOW_WIDTH
  16. Window.height = WINDOW_HEIGHT
  17.  
  18. module Color
  19.   def hsb2rgb(h, s=1.0, b=1.0)
  20.     hi = ((h.to_f/60).floor)%6
  21. 	f = h.to_f/60 - hi
  22. 	p = b*(1-s)
  23. 	q = b*(1-f*s)
  24. 	t = b*(1-(1-f)*s)
  25. 	case hi
  26. 	  when 0
  27. 	    return [255*b, 255*t, 255*p].map(&:round)
  28. 	  when 1
  29. 	    return [255*q, 255*b, 255*p].map(&:round)
  30. 	  when 2
  31. 	    return [255*p, 255*b, 255*t].map(&:round)
  32. 	  when 3
  33. 	    return [255*p, 255*q, 255*b].map(&:round)
  34. 	  when 4
  35. 	    return [255*t, 255*p, 255*b].map(&:round)
  36. 	  when 5
  37. 	    return [255*b, 255*p, 255*q].map(&:round)
  38. 	end
  39.   end
  40.  
  41.   def ave_hsb(hsb1=[0, 1, 1], hsb2=[0, 1, 1])
  42.     return [((hsb1[0]+hsb2[0]).to_f/2).round, (hsb1[1]+hsb2[1]).to_f/2, (hsb1[2]+hsb2[2]).to_f/2]
  43.   end
  44. end
  45. include Color
  46.  
  47. class Image
  48.   def dragon(x1, y1, x2, y2, count, start_hue=[0, 1, 1], end_hue=[0, 1, 1])
  49.     if count==0
  50. 	  line(x1, y1, x2, y2, hsb2rgb(*start_hue))
  51. 	else
  52. 	  dragon(x1, y1, (x2+x1+y2-y1)/2, (x1-x2+y2+y1)/2, count-1, start_hue, ave_hsb(start_hue,end_hue))
  53. 	  dragon(x2, y2, (x2+x1+y2-y1)/2, (x1-x2+y2+y1)/2, count-1, end_hue, ave_hsb(start_hue,end_hue))
  54. 	end
  55.   end
  56. end
  57.  
  58. dragons = []
  59.  
  60. 4.times do |i|
  61.   10.times do |j|
  62.     dragons << Image.new(WINDOW_WIDTH, WINDOW_HEIGHT).dragon(BASE_X+SIZE*j, BASE_Y+(MARGIN+SIZE)*i, BASE_X+SIZE*j+SIZE, BASE_Y+(MARGIN+SIZE)*i, ITER_COUNT, [90*(i%4), 1-0.1*j, 1], [90*((i+1)%4)-1, 1-0.1*j, 1])
  63.     dragons << Image.new(WINDOW_WIDTH, WINDOW_HEIGHT).dragon(BASE_X+SIZE*j+SIZE, BASE_Y+(MARGIN+SIZE)*i, BASE_X+SIZE*j+SIZE, BASE_Y+(MARGIN+SIZE)*i+SIZE, ITER_COUNT, [90*((i+1)%4), 1-0.1*j, 1], [90*((i+2)%4)-1, 1-0.1*j, 1])
  64.     dragons << Image.new(WINDOW_WIDTH, WINDOW_HEIGHT).dragon(BASE_X+SIZE*j+SIZE, BASE_Y+(MARGIN+SIZE)*i+SIZE, BASE_X+SIZE*j, BASE_Y+(MARGIN+SIZE)*i+SIZE, ITER_COUNT, [90*((i+2)%4), 1-0.1*j, 1], [90*((i+3)%4)-1, 1-0.1*j, 1])
  65.     dragons << Image.new(WINDOW_WIDTH, WINDOW_HEIGHT).dragon(BASE_X+SIZE*j, BASE_Y+(MARGIN+SIZE)*i+SIZE, BASE_X+SIZE*j, BASE_Y+(MARGIN+SIZE)*i, ITER_COUNT, [90*((i+3)%4), 1-0.1*j, 1], [90*(i%4)-1, 1-0.1*j, 1])
  66.   end
  67. end
  68.  
  69. Window.loop do
  70.   dragons.each do |dragon|
  71.     Window.draw(0, 0, dragon)
  72.   end
  73. end
  74.  
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https://ideone.com/VTgSq
language:
Ruby (ruby 2.5.5)
created:
13 years ago
visibility:
public

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