def __init__(self, x1, y1, x2, y2):
'''
@param x1: The first position of the boundary (x axis)
@param y1: The first position of the boundary (y axis)
@param x2: The second position of the boundary (x axis)
@param y2: The second position of the boundary (y axis)
'''
super(Boundary, self).__init__(2)
self.pos = numpy.array([x1, y1])
self.vec = numpy.array([x2, y2]) - self.pos
def __init__(self, x1, y1, x2, y2):
'''
@param x1: The first position of the boundary (x axis)
@param y1: The first position of the boundary (y axis)
@param x2: The second position of the boundary (x axis)
@param y2: The second position of the boundary (y axis)
'''
super(Boundary, self).__init__(2)
self.pos = numpy.array([x1, y1])
self.vec = numpy.array([x2, y2]) - self.pos
def __init__(self, x1, y1, z1, x2, y2, z2, x3, y3, z3):
'''
@param x1: The first position of the boundary (x axis)
@param y1: The first position of the boundary (y axis)
@param x2: The second position of the boundary (x axis)
@param y2: The second position of the boundary (y axis)
'''
super(Boundary, self).__init__(3)
self.pos = numpy.array([x1, y1, z1])
self.vec1 = numpy.array([x2, y2, z2]) - self.pos
self.vec2 = numpy.array([x3, y3, z3]) - self.pos
if self.area() == 0:
raise ValueError("Error: specified triangle has zero area. Either all three points are the same or all three lie on the same line")
def __init__(self, x1, y1, z1, x2, y2, z2, x3, y3, z3):
'''
@param x1: The first position of the boundary (x axis)
@param y1: The first position of the boundary (y axis)
@param x2: The second position of the boundary (x axis)
@param y2: The second position of the boundary (y axis)
'''
super(Boundary, self).__init__(3)
self.pos = numpy.array([x1, y1, z1])
self.vec1 = numpy.array([x2, y2, z2]) - self.pos
self.vec2 = numpy.array([x3, y3, z3]) - self.pos
if self.area() == 0:
raise ValueError(
"Error: specified triangle has zero area. Either all three points are the same or all three lie on the same line"
)
def get(self, idx):
'''
Returns the ith vertex
'''
return numpy.array([self.vertex1(), self.vertex2()])[idx]
def norm(self):
'''
return a unit vector in the direction of the norm.
'''
v = numpy.array([-self.vec[1], self.vec[0]])
return v / numpy.linalg.norm(v)
def norm(self):
'''
return a unit vector in the direction of the norm.
'''
v = numpy.array([-self.vec[1], self.vec[0]])
return v / numpy.linalg.norm(v)
def get(self, idx):
'''
Returns the ith vertex
'''
return numpy.array([self.vertex1(), self.vertex2()])[idx]
