37 lines
1.6 KiB
Python
37 lines
1.6 KiB
Python
#!/usr/bin/python3
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"""The linesegment module defines the class line_segment."""
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import point
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class LineSegment:
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"""The class LineSegment defines a two-dimensional line segment in the coordinate system
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starting at a startpoint and ending at a endpoint."""
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def __init__(self, startpoint=point.Point(), endpoint=point.Point()):
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"""Initialize the line segment."""
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self.set_startpoint(startpoint)
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self.set_endpoint(endpoint)
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def set_startpoint(self, new_startpoint):
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"""Set or change the startpoint of the line segment. If not a Point object is given
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the startpoint gets set to a default value of Point(0,0)."""
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self.__startpoint = new_startpoint
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def get_startpoint(self):
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"""Returns the current startpoint"""
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return self.__startpoint
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def set_endpoint(self, new_endpoint):
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"""Set or change the endpoint of the line segment. If not a Point object is given
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the endpoint gets set to a default value of Point(0,0)."""
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self.__endpoint = new_endpoint
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def get_endpoint(self):
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"""Returns the current endpoint"""
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return self.__endpoint
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def get_length(self):
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"""Returns the length of the line segment."""
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diff_x = abs(self.__startpoint.get_x() - self.__endpoint.get_x())
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diff_y = abs(self.__startpoint.get_y() - self.__endpoint.get_y())
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return ((diff_x ** 2) + (diff_y ** 2)) ** (1/2.0)
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def str(self):
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"""Return the line segment values as string."""
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return self.__startpoint.str() + "-->" + self.__endpoint.str()
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def draw(self):
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"""TODO: Draw the line segment in a canvas."""
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