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triangleFunction.py
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triangleFunction.py
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import typing as type
from point import Point
class TriangleFunction:
_pointLeftDown: Point
_pointCenterTop: Point
_pointRightDown: Point
_leftSharp: bool = False
_rightSharp: bool = False
def __init__(self, pointLeftDown: Point, pointCenterTop: Point, pointRightDown: Point) -> None:
self._pointLeftDown = pointLeftDown
self._pointCenterTop = pointCenterTop
self._pointRightDown = pointRightDown
if self._pointLeftDown.x == self._pointCenterTop.x:
self._leftSharp = True
if self._pointRightDown.x == self._pointCenterTop.x:
self._rightSharp = True
def value(self, x: float) -> float:
if x <= self._pointLeftDown.x or x >= self._pointRightDown.x:
return 0
if x > self._pointLeftDown.x and x < self._pointCenterTop.x and not self._leftSharp:
return 1 * (x - self._pointLeftDown.x)/(self._pointCenterTop.x - self._pointLeftDown.x)
elif x > self._pointCenterTop.x and x < self._pointRightDown.x and not self._rightSharp:
return 1 * (self._pointRightDown.x - x)/(self._pointRightDown.x - self._pointCenterTop.x)
elif self._leftSharp and x < self._pointCenterTop.x:
return 0
elif self._rightSharp and x > self._pointCenterTop.x:
return 0
else:
return 1