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Handle empty strings

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This commit is contained in:
Michael W
2021-12-07 14:12:08 +08:00
committed by GitHub
parent 00f72da493
commit 6821a7c20e
1 changed files with 7 additions and 1 deletions
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8
manimlib/mobject/svg/mtex_mobject.py
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@ -81,7 +81,11 @@ class MTex(VMobject):
def __init__(self, tex_string, **kwargs): def __init__(self, tex_string, **kwargs):
super().__init__(**kwargs) super().__init__(**kwargs)
self.tex_string = tex_string.strip("\n") tex_string = tex_string.strip("\n")
# Prevent from passing an empty string.
if not tex_string:
tex_string = "\\quad"
self.tex_string = tex_string
self.parse_tex() self.parse_tex()
full_tex = self.get_tex_file_body() full_tex = self.get_tex_file_body()
@ -278,6 +282,8 @@ class MTex(VMobject):
return result return result
def build_submobjects(self): def build_submobjects(self):
if not self.submobjects:
return
self.group_submobjects() self.group_submobjects()
self.sort_scripts_in_tex_order() self.sort_scripts_in_tex_order()
self.assign_submob_tex_strings() self.assign_submob_tex_strings()