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Vector

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This commit is contained in:
Grant Sanderson 2016-03-17 23:54:28 -07:00
parent c19b313808
commit b7e53a0e8b
1 changed files with 13 additions and 1 deletions
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14
topics/geometry.py
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@ -121,6 +121,18 @@ class Arrow(Line):
setattr(self, attr, getattr(self, attr)[:-self.num_tip_points])
return self
class Vector(Arrow):
CONFIG = {
"color" : WHITE,
"buff" : 0,
}
def __init__(self, start, direction, **kwargs):
if isinstance(start, Mobject):
end = start.get_center()+direction
else:
end = start + direction
Arrow.__init__(self, start, end, **kwargs)
class CurvedLine(Line):
def __init__(self, start, end, via = None, **kwargs):
self.set_start_and_end(start, end)
@ -233,7 +245,7 @@ class Rectangle(Grid):
Grid.__init__(self, 1, 1, **kwargs)
def generate_points(self):
hw = [self.width/2.0, self.height/2.0]
hw = [self.height/2.0, self.width/2.0]
self.add_points([
(x, u, 0) if dim==1 else (u, x, 0)
for dim in 0, 1