44 lines
1.3 KiB
Python
44 lines
1.3 KiB
Python
class Extents:
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__slots__ = "xmin ymin xmax ymax".split()
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def __init__(self,xmin=float('inf'),ymin=float('inf'),xmax=float('-inf'),ymax=float('-inf')):
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self.xmin = xmin
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self.ymin = ymin
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self.xmax = xmax
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self.ymax = ymax
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def add(self,x,y):
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self.xmin = min(self.xmin,x)
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self.xmax = max(self.xmax,x)
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self.ymin = min(self.ymin,y)
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self.ymax = max(self.ymax,y)
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def extend(self,l):
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for x,y in l:
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self.add(x,y)
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def __add__(self,extent):
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#todo: why can this happen?
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if extent ==0:
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return Extents(self.xmin,self.ymin,self.xmax,self.ymax)
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return Extents(
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min(self.xmin,extent.xmin),min(self.ymin,extent.ymin),
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max(self.xmax,extent.xmax),max(self.ymax,extent.ymax)
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)
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def __radd__(self,extent):
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if extent == 0:
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return Extents(self.xmin,self.ymin,self.xmax,self.ymax)
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return self.__add__(extent)
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def get_width(self):
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return self.xmax-self.xmin
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def get_height(self):
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return self.ymax-self.ymin
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width = property(get_width)
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height = property(get_height)
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def __repr__(self):
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return f'Extents ({self.xmin},{self.ymin})-({self.xmax},{self.ymax})' |