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Fixed bug associated with empty input strings

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This commit is contained in:
Grant Sanderson
2017-06-06 16:03:53 -07:00
parent c4b4acc69b
commit f6340f42d7
1 changed files with 18 additions and 6 deletions
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24
mobject/tex_mobject.py
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@ -1,7 +1,9 @@
from vectorized_mobject import VMobject, VGroup
from helpers import *
from vectorized_mobject import VMobject, VGroup, VectorizedPoint
from svg_mobject import SVGMobject, VMobjectFromSVGPathstring
from topics.geometry import BackgroundRectangle
from helpers import *
import collections
import sys
@ -80,9 +82,9 @@ class TexMobject(SVGMobject):
def modify_special_strings(self, tex):
tex = self.remove_stray_braces(tex)
if tex == "\\over":
if tex in ["\\over", "\\overline"]:
#fraction line needs something to be over
tex = "\\over\\,"
tex += "\\,"
for t1, t2 in ("\\left", "\\right"), ("\\right", "\\left"):
if t1 in tex and t2 not in tex:
tex = tex.replace(t1, "\\big")
@ -107,14 +109,24 @@ class TexMobject(SVGMobject):
return self.tex_string
def handle_multiple_args(self):
"""
Reorganize existing submojects one layer
deeper based on the structure of args (as a list of strings)
"""
new_submobjects = []
curr_index = 0
self.expression_parts = list(self.args)
for expr in self.args:
sub_tex_mob = TexMobject(expr, **self.CONFIG)
sub_tex_mob.tex_string = expr ##Want it unmodified
new_index = curr_index + len(sub_tex_mob.submobjects)
sub_tex_mob.submobjects = self.submobjects[curr_index:new_index]
num_submobs = len(sub_tex_mob.submobjects)
new_index = curr_index + num_submobs
if num_submobs == 0:
sub_tex_mob.submobjects = [VectorizedPoint(
self.submobjects[curr_index].get_right()
)]
else:
sub_tex_mob.submobjects = self.submobjects[curr_index:new_index]
new_submobjects.append(sub_tex_mob)
curr_index = new_index
self.submobjects = new_submobjects