kopia lustrzana https://github.com/villares/sketch-a-day
83 wiersze
2.3 KiB
Python
83 wiersze
2.3 KiB
Python
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def setup():
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size(500, 500)
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p1 = PVector(100, 100)
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p2 = PVector(400, 200)
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p3 = PVector(200, 400)
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po = PVector(10, 10)
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r1 = 30
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r2 = 50
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r3 = 70
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noFill()
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strokeWeight(1)
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vec_bar(p1, p2, r1, r2)
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vec_bar(p2, p3, r2, r3)
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vec_bar(p1, p3, r1, r3)
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triangle(p1.x, p1.y, p2.x, p2.y, p3.x, p3.y)
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strokeWeight(3)
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r1 += 10
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r2 += 10
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r3 += 10
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test(p1, p2, r1, r2)
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test(p2, p3, r2, r3)
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test(p3, p1, r3, r1)
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def test(pa, pb, r1, r2):
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p1x, p1y = pa.x, pa.y
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p2x, p2y = pb.x, pb.y
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d = dist(p1x, p1y, p2x, p2y)
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if d > 0:
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with pushMatrix():
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translate(p1x, p1y)
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ang = atan2(p1x - p2x, p2y - p1y) + HALF_PI
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rotate(ang)
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ri = r1 - r2
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beta = asin(ri / d) + HALF_PI #+ ang
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a = PVector(cos(beta) * r1, sin(beta) * r1)
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#a = a.rotate(ang)
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x1, y1 = a.x, a.y
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b = PVector(cos(beta) * r2, sin(beta) * r2)
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#b = b.rotate(ang)
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x2, y2 = b.x, b.y
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line(-x1, -y1, d - x2, -y2)
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#line(-x1, +y1, d - x2, +y2)
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arc(0, 0, r1 * 2, r1 * 2,
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-beta - PI, beta - PI )
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#arc(d, 0, r2 * 2, r2 * 2,
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# beta - PI, PI - beta)
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def vec_bar(p1, p2, r1, r2):
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var_bar(p1.x, p1.y, p2.x, p2.y, r1, r2)
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def var_bar(p1x, p1y, p2x, p2y, r1, r2=None):
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if r2 is None:
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r2 = r1
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d = dist(p1x, p1y, p2x, p2y)
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if d > 0:
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with pushMatrix():
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translate(p1x, p1y)
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angle = atan2(p1x - p2x, p2y - p1y)
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rotate(angle + HALF_PI)
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ri = r1 - r2
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beta = asin(ri / d) + HALF_PI
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x1 = cos(beta) * r1
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y1 = sin(beta) * r1
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x2 = cos(beta) * r2
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y2 = sin(beta) * r2
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line(-x1, -y1, d - x2, -y2)
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line(-x1, +y1, d - x2, +y2)
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arc(0, 0, r1 * 2, r1 * 2,
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-beta - PI, beta - PI)
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arc(d, 0, r2 * 2, r2 * 2,
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beta - PI, PI - beta)
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with pushStyle():
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noStroke()
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fill(0)
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ellipse(-x1, -y1, 5, 5)
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ellipse(d - x2, -y2, 5, 5)
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ellipse(-x1, +y1, 5, 5)
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ellipse(d - x2, +y2, 5, 5)
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