kopia lustrzana https://github.com/villares/sketch-a-day
92 wiersze
2.3 KiB
Python
92 wiersze
2.3 KiB
Python
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pontos = []
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novos_pontos = []
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arrastando = -1
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offset_curva = 10
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novo_offset_curva = 10
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def setup():
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size(500, 500)
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background(240, 250, 250)
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novos_pontos[:] = pontos[:] = sorteia_pontos()
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def sorteia_pontos():
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pontos = []
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for _ in range(5):
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x, y = random(width * .2, width * .8), random(height * .2, height * .8)
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pontos.append((x, y))
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return pontos
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def draw():
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oc = offset_curva
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background(240, 250, 250)
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for i in range(5):
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pts = lerp_pts(pontos, novos_pontos, i / 5.)
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oc = lerp(offset_curva, novo_offset_curva, i / 5.)
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draw_pontos(pts, oc, handle=not i)
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def draw_pontos(pontos, offset, handle=False):
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for i, (x0, y0) in enumerate(pontos):
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x1, y1 = pontos[i - 1]
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noFill()
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stroke(0)
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strokeWeight(2)
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curva(x0, y0, x1, y1, offset, d=True)
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if handle and dist(mouseX, mouseY, x0, y0) < 10:
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stroke(255, 0, 0)
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strokeWeight(1)
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circle(x0, y0, 10)
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def curva(x1, y1, x2, y2, offset=0, d=False):
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L = dist(x1, y1, x2, y2)
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if not d or L < 10 + abs(offset):
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with pushMatrix():
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translate(x1, y1)
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angle = atan2(x1 - x2, y2 - y1)
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rotate(angle)
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cx = (L / 2) * offset / 10.
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bezier(0, 0, -cx, L * .50, +cx, L * .50, 0, L)
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else:
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xm, ym = (x1 + x2) / 2, (y1 + y2) / 2
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curva(x1, y1, xm, ym, offset)
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curva(xm, ym, x2, y2, offset)
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def lerp_pt(p1, p2, a):
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if a == 0: return p1
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if a == 1: return p2
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return (lerp(p1[0], p2[0], a), lerp(p1[1], p2[1], a))
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def lerp_pts(pts1, pts2, a):
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if a == 0: return pts1
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if a == 1: return pts2
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pts = []
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for p1, p2 in zip(pts1, pts2):
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pts.append(lerp_pt(p1, p2, a))
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return pts
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def mousePressed():
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global arrastando
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for i, (x0, y0) in enumerate(pontos):
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if dist(mouseX, mouseY, x0, y0) < 10:
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arrastando = i
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def mouseReleased():
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global arrastando
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arrastando = -1
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def mouseDragged():
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if arrastando >= 0:
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novos_pontos[arrastando] = (mouseX, mouseY)
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def mouseWheel(e):
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global novo_offset_curva
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novo_offset_curva += e.getCount() / 5.
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def keyPressed():
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if key == ' ':
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pontos[:] = novos_pontos[:] = sorteia_pontos()
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if key == 's':
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saveFrame("####.png")
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