kopia lustrzana https://github.com/villares/sketch-a-day
95 wiersze
2.2 KiB
Python
95 wiersze
2.2 KiB
Python
# L-System
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iterations = 7
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stroke_len = 500
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angle_deg = 30
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axiom = "H"
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sentence = axiom
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rules = {
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"F": "F[-FH][+FH]",
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"G": "H++GF--GF",
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"H": "[-HG][+HG]",
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}
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def setup():
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size(700, 700)
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global xo, yo
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xo, yo = width / 2, height / 2
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strokeWeight(1)
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noFill()
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generate(iterations)
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def draw():
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background(0)
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translate(xo, yo)
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plot(radians(angle_deg))
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def generate(n):
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global stroke_len, sentence
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for _ in range(n):
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stroke_len *= 0.5
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next_sentence = ""
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for c in sentence:
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next_sentence += rules.get(c, c)
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sentence = next_sentence
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def plot(angle):
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for c in sentence:
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if c == "F":
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stroke(255)
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line(0, 0, stroke_len / 2, -stroke_len)
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translate(0, -stroke_len / 2)
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# ellipse(0, 0, 10, 10)
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elif c == "G":
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stroke(0, 200, 0)
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line(0, 0, stroke_len / 2, -stroke_len)
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translate(0, -stroke_len)
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elif c == "H":
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stroke(0, 0, 200)
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line(0, 0, stroke_len / 2, -stroke_len)
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translate(0, -stroke_len)
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elif c == "+":
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rotate(angle)
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elif c == "-":
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rotate(-angle)
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elif c == "[":
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pushMatrix()
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elif c == "]":
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popMatrix()
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def keyPressed():
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global angle_deg, xo, yo, stroke_len
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if key == '-':
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angle_deg -= 5
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print(angle_deg)
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if str(key) in "=+":
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angle_deg += 5
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print(angle_deg)
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if key == 's':
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saveFrame("####.png")
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if key == 'a':
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stroke_len *= 2
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if key == 'z':
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stroke_len /= 2
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if keyCode == LEFT:
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xo -= 50
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if keyCode == RIGHT:
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xo += 50
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if keyCode == UP:
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yo -= 50
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if keyCode == DOWN:
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yo += 50
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def settings():
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""" print markdown to add at the sketch-a-day page"""
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from os import path
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global SKETCH_NAME, OUTPUT
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SKETCH_NAME = path.basename(sketchPath())
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OUTPUT = ".png"
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println(
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"""
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[{0}](https://github.com/villares/sketch-a-day/tree/master/{2}/{0}) [[Py.Processing](https://villares.github.io/como-instalar-o-processing-modo-python/index-EN)]
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""".format(SKETCH_NAME, OUTPUT, year())
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)
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