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Through coordinates section in chapter 1

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This commit is contained in:
Grant Sanderson
2016-07-15 18:16:06 -07:00
parent ba73032c90
commit 4e3f7292af
9 changed files with 742 additions and 77 deletions
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26
mobject/mobject.py
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@ -219,9 +219,14 @@ class Mobject(object):
self.shift(target_point - anchor_point + buff*direction)
return self
def stretch_to_fit(self, length, dim):
def stretch_to_fit(self, length, dim, stretch = True):
old_length = self.length_over_dim(dim)
self.do_in_place(self.stretch, length/old_length, dim)
if old_length == 0:
return self
if stretch:
self.do_in_place(self.stretch, length/old_length, dim)
else:
self.do_in_place(self.scale, length/old_length)
return self
def stretch_to_fit_width(self, width):
@ -231,10 +236,19 @@ class Mobject(object):
return self.stretch_to_fit(height, 1)
def scale_to_fit_width(self, width):
return self.scale(width/self.get_width())
return self.stretch_to_fit(width, 0, stretch = False)
def scale_to_fit_height(self, height):
return self.scale(height/self.get_height())
return self.stretch_to_fit(height, 1, stretch = False)
def move_to(self, point_or_mobject, side_to_align = ORIGIN):
if isinstance(point_or_mobject, Mobject):
target = point_or_mobject.get_critical_point(side_to_align)
else:
target = point_or_mobject
anchor_point = self.get_critical_point(side_to_align)
self.shift(target - anchor_point)
return self
def replace(self, mobject, stretch = False):
if not mobject.get_num_points() and not mobject.submobjects:
@ -244,8 +258,8 @@ class Mobject(object):
self.stretch_to_fit_width(mobject.get_width())
self.stretch_to_fit_height(mobject.get_height())
else:
self.scale(mobject.get_width()/self.get_width())
self.center().shift(mobject.get_center())
self.scale_to_fit_width(mobject.get_width())
self.shift(mobject.get_center() - self.get_center())
return self
def position_endpoints_on(self, start, end):