56 lines
1.4 KiB
Python
56 lines
1.4 KiB
Python
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import sys
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from Shape import Shape
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class Circle(Shape):
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def __init__(self, x, y, r):
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self.vars = [x, y, r]
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def nVars(self):
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return len(self.vars)
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def nPts(self):
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return 5
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def toEqu(self, ptNum):
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if ptNum == 0:
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return ([1, 0, 0], [0, 1, 0])
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elif ptNum == 1:
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return ([1, 0, 1], [0, 1, 0])
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elif ptNum == 2:
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return ([1, 0, 0], [0, 1, 1])
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elif ptNum == 3:
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return ([1, 0, -1], [0, 1, 0])
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elif ptNum == 4:
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return ([1, 0, 0], [0, 1, -1])
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def getCenter(self):
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return (self.vars[0], self.vars[1])
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def getRadius(self):
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return self.vars[2]
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def setRadius(self, r):
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self.vars[2] = r
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def getPt(self, ptNum):
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if ptNum == 0:
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return (self.vars[0], self.vars[1])
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elif ptNum == 1:
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return (self.vars[0] + self.vars[2], self.vars[1])
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elif ptNum == 2:
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return (self.vars[0], self.vars[1] + self.vars[2])
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elif ptNum == 3:
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return (self.vars[0] - self.vars[2], self.vars[1])
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elif ptNum == 4:
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return (self.vars[0], self.vars[1] - self.vars[2])
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else:
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sys.stderr.write('Circle.getPt(%d) called!' % ptNum)
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def setPt(self, ptNum, pt):
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if ptNum == 0:
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self.vars[0:2] = pt
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else:
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raise IndexError('Can only set point 0')
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