kopia lustrzana https://github.com/villares/sketch-a-day
61 wiersze
1.8 KiB
Python
61 wiersze
1.8 KiB
Python
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"""
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sketch 74 180315 - 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, HALF_PI)
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B = Slider(0.5, 0.70, 0.66)
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C = Slider(-2, 2, 0)
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D = Slider(0, 10, 0)
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def setup():
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size(600, 600, P2D)
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frameRate(30)
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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 c, d
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background(0)
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stroke(255)
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strokeWeight(2)
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a = A.value() # Angle
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b = B.value() # branch size factor
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c = C.value() # angle randomization
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d = D.value() # branch size randomization
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randomSeed(1)
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translate(width / 2, height / 2)
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branch(120, a, b)
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# uncomment next line to export GIF
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#if not frameCount % 10: gif_export(GifMaker, frames=3000)
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def branch(h, theta, size_factor):
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h *= size_factor
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# All recursive functions must have an exit condition!!!!
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if h > 1.5:
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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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branch(h + random(-d, 0), theta, size_factor)
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# Repeat the same thing, only branch off to the "left" this time!
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with pushMatrix(): # this 'with' context pops matrix on exit
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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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branch(h + random(-d, 0), theta, size_factor)
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