kopia lustrzana https://github.com/villares/sketch-a-day
87 wiersze
2.3 KiB
Python
87 wiersze
2.3 KiB
Python
# Alexandre B A Villares - https://abav.lugaralgum.com/sketch-a-day
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# unfolded piramid
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def setup():
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size(600, 600)
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def draw():
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background(200)
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translate(300, 300)
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pontos = estrela(4, 200, 75)
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fill(255)
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beginShape()
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for i, ponto in enumerate(pontos):
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vertex(*ponto)
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endShape(CLOSE)
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noFill()
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beginShape()
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for i, ponto in enumerate(pontos):
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if i % 2 == 0:
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#text(str(i//2), ponto[0], ponto[1])
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vertex(*ponto)
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endShape(CLOSE)
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lista_b = pontos[1:] + [pontos[0]]
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arestas = zip(pontos, lista_b)
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abas = arestas[::2]
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fill(255)
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for a in abas:
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p1, p2 = a
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glue_tab(p2, p1, 10)
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def estrela(np, re, ri):
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vertices_estrela = []
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n = np * 2
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for i in range(n):
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ang = radians(i * 360. / n)
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if i % 2 == 0: r = ri
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else: r = re
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x = sin(ang) * r
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y = cos(ang) * r
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vertices_estrela.append((x, y))
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return vertices_estrela
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def glue_tab(p1, p2, tab_w, cut_ang=QUARTER_PI):
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"""
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draws a trapezoidal or triangular glue tab along edge defined by p1 and p2,
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with width tab_w and cut angle a
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"""
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al = atan2(p1[0] - p2[0], p1[1] - p2[1])
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a1 = al + cut_ang + PI
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a2 = al - cut_ang
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# calculate cut_len to get the right tab width
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cut_len = tab_w / sin(cut_ang)
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f1 = (p1[0] + cut_len * sin(a1),
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p1[1] + cut_len * cos(a1))
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f2 = (p2[0] + cut_len * sin(a2),
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p2[1] + cut_len * cos(a2))
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edge_len = dist(p1[0], p1[1], p2[0], p2[1])
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if edge_len > 2 * cut_len * cos(cut_ang): # 'normal' trapezoidal tab
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beginShape()
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vertex(*p1) # vertex(p1[0], p1[1])
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vertex(*f1)
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vertex(*f2)
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vertex(*p2)
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endShape()
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else: # short triangular tab
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fm = ((f1[0] + f2[0]) / 2, (f1[1] + f2[1]) / 2)
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beginShape()
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vertex(*p1)
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vertex(*fm) # middle way of f1 and f2
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vertex(*p2)
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endShape()
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def settings():
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from os import path
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global SKETCH_NAME
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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/2019/{0}) [[Py.Processing](https://villares.github.io/como-instalar-o-processing-modo-python/index-EN)]
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""".format(SKETCH_NAME, OUTPUT)
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)
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