def arrangeEdges(self, edges):
# index of the middle part of the node if it's of T-type
middleIndex = -1
cos01 = edges[0][0].dot(edges[1][0])
cos02 = edges[0][0].dot(edges[2][0])
if is90degrees(cos01):
if is90degrees(cos02):
middleIndex = 0
elif is180degrees(cos02):
middleIndex = 1
elif is90degrees(cos02):
if is90degrees(cos01):
middleIndex = 0
elif is180degrees(cos01):
middleIndex = 2
if middleIndex < 0:
return None
self.baseEdgeIndex = middleIndex
return super().arrangeEdges(edges)
def arrangeEdges(self, edges):
# index of the middle part of the node if it's of T-type
middleIndex = -1
cos01 = edges[0][0].dot(edges[1][0])
cos02 = edges[0][0].dot(edges[2][0])
if is90degrees(cos01):
if is90degrees(cos02):
middleIndex = 0
elif is180degrees(cos02):
middleIndex = 1
elif is90degrees(cos02):
if is90degrees(cos01):
middleIndex = 0
elif is180degrees(cos01):
middleIndex = 2
if middleIndex < 0:
return None
self.baseEdgeIndex = middleIndex
return super().arrangeEdges(edges)
def arrangeEdges(self, edges):
"""
Arrange input <edges> in the following way.
The edge with the index zero is always the base edge.
The other edges are arranged in the counterclockwise order starting from the base edge.
Returns:
A tuple of arranged edges
"""
from operator import itemgetter
# Add two extra elements to each entry of <edges> to perform one-line sorting
# So the forth element with the index 3 is cosine of the angle between the edge and the base edge
# The third element with the index 2 indicates in which circle half the edge is located:
# True: the edge is located in the first circle half going counterclockwise from the base edge
# False: the edge is located in the second circle half going counterclockwise from the base edge
baseEdgeIndex = self.baseEdgeIndex
baseVec = edges[baseEdgeIndex][0]
for i, e in enumerate(edges):
e.append(True)
if i == baseEdgeIndex:
# ensure that the base edge will be the first one after sorting of <edges>
e.append(1.)
else:
cos = baseVec.dot(e[0])
# check if the angle between the edge and the base edge is 180 degrees
if is180degrees(cos):
e.append(-1.)
else:
if self.n.dot(baseVec.cross(e[0])) < 0.:
e[2] = False
# negate <cos> to have correct sorting
cos = -cos
e.append(cos)
edges.sort(key=itemgetter(2, 3), reverse=True)
# restore the true value of cosine for the second circle half
for i in range(len(edges) - 1, -1, -1):
if edges[i][2]:
# reached the first circle half
break
else:
edges[i][3] = -edges[i][3]
return edges
def arrangeEdges(self, edges):
"""
Arrange input <edges> in the following way.
The edge with the index zero is always the base edge.
The other edges are arranged in the counterclockwise order starting from the base edge.
Returns:
A tuple of arranged edges
"""
from operator import itemgetter
# Add two extra elements to each entry of <edges> to perform one-line sorting
# So the forth element with the index 3 is cosine of the angle between the edge and the base edge
# The third element with the index 2 indicates in which circle half the edge is located:
# True: the edge is located in the first circle half going counterclockwise from the base edge
# False: the edge is located in the second circle half going counterclockwise from the base edge
baseEdgeIndex = self.baseEdgeIndex
baseVec = edges[baseEdgeIndex][0]
for i,e in enumerate(edges):
e.append(True)
if i == baseEdgeIndex:
# ensure that the base edge will be the first one after sorting of <edges>
e.append(1.)
else:
cos = baseVec.dot(e[0])
# check if the angle between the edge and the base edge is 180 degrees
if is180degrees(cos):
e.append(-1.)
else:
if self.n.dot( baseVec.cross(e[0])) < 0.:
e[2] = False
# negate <cos> to have correct sorting
cos = -cos
e.append(cos)
edges.sort(key=itemgetter(2,3), reverse=True)
# restore the true value of cosine for the second circle half
for i in range(len(edges)-1, -1, -1):
if edges[i][2]:
# reached the first circle half
break
else:
edges[i][3] = -edges[i][3]
return edges