kopia lustrzana https://github.com/villares/sketch-a-day
71 wiersze
2.0 KiB
Python
71 wiersze
2.0 KiB
Python
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"""
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sketch 76 180317 - Alexandre B A Villares
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https://abav.lugaralgum.com/sketch-a-day
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Based on Recursive Tree by Daniel Shiffman.
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"""
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add_library('gifAnimation')
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from gif_exporter import gif_export
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from slider import Slider
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A = Slider(0, HALF_PI, QUARTER_PI)
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B = Slider(0, 10, 0)
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C = Slider(-2, 2, 0)
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D = Slider(2, 15, 10)
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def setup():
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size(600, 600, P2D)
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A.position(20, height - 60)
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B.position(20, height - 30)
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C.position(width - 180, height - 60)
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D.position(width - 180, height - 30)
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def draw():
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global b, c, d
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background(0)
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frameRate(30)
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stroke(255, 100)
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strokeWeight(2)
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a = A.value() # Angle
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b = B.value() # branch size randomization
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c = C.value() # angle randomization
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d = D.value() # recursion depth
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randomSeed(1)
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translate(width / 2, height / 2)
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branch(d, a, width/30)
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# uncomment next line to export GIF
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if not frameCount % 10: gif_export(GifMaker,
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frames=2000,
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filename="s076")
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def branch(gen, theta, branch_size):
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# Each branch will be 2/3rds the size of the previous one
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strokeWeight(gen)
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# All recursive functions must have an exit condition!!!!
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if gen > 1 and branch_size > 1:
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h = branch_size * (1 + random(b) / 4)
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branch_size *= 1 - random(b) / 10
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# Save the current state of transformation (i.e. where are we now)
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with pushMatrix():
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rotate(theta + c * random(1)) # Rotate by theta
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line(0, 0, 0, -h) # Draw the branch
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translate(0, -h) # Move to the end of the branch
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# Ok, now call myself to draw two branches!!
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pushStyle()
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branch(gen - 1, theta, branch_size)
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popStyle()
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# Repeat the same thing, only branch off to the "left" this time!
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with pushMatrix():
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rotate(-theta + c * random(1))
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line(0, 0, 0, -h)
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translate(0, -h)
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pushStyle()
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branch(gen - 1, theta, branch_size)
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popStyle()
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