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def Rect_Pattern():
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canvas.delete("all") # 清空画布
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canvas.create_rectangle(25, 30, 145, 140, outline='red', width=2)
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def Rect_tree(depth, point1, point2, angle, canvas):
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# 直线的旋转，point1是定点
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def rotate(point1, point2, angle):
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x1, y1 = point1[0], point1[1]
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x2, y2 = point2[0], point2[1]
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x = x1 + (x2 - x1) * math.cos(math.radians(angle)) + (y2 - y1) * math.sin(math.radians(angle))
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y = y1 + (y2 - y1) * math.cos(math.radians(angle)) - (x2 - x1) * math.sin(math.radians(angle))
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point = (x, y)
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# print(point)
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return point
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# 直线的缩放，point1是定点
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def zoom(point1, point2, ratio):
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x1, y1 = point1[0], point1[1]
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x2, y2 = point2[0], point2[1]
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x = x1 + (x2 - x1) * ratio
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y = y1 + (y2 - y1) * ratio
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point = (x, y)
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return point
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point3 = rotate(point1, point2, 90)
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point4 = rotate(point2, point1, 270)
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# print(point1,point2,point3,point4)
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# 画正方形
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canvas.create_polygon(point1, point2, point4, point3, fill="#d8e6f7", outline='white')
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if depth == 0:
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return
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point = rotate(point3, point4, angle) # 旋转
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point = zoom(point3, point, math.cos(math.radians(angle))) # 缩放
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Rect_tree(depth - 1, point, point4, angle, canvas) # 画左枝
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Rect_tree(depth - 1, point3, point, angle, canvas) # 画右枝
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canvas.update()
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sleep(0.001)
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分形层数:finishLevel = 8
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左下点:leftPoint = (450, 510)
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右下点:rightPoint = (550, 510)
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初始角:initAngle = 45
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