Rendered submobjects of MathTex may not correspond to their tex strings #3548
Description
Description of bug / unexpected behavior
Tex string of SingleStringMathTex submobject of MathTex object does not match its rendered symbol.
The problem appears when using subscripts and superscripts in latex formula.
For example, the two objects eq1 = MathTex('A', '^n', '_1') and eq2 = MathTex('A', '_1', '^n') produce identical symbols n when rendering eq1[1], eq2[1], though the corresponding tex strings are different ('^n' and '_1').
UPD: Dealing with MathTex('\sum', '^n', '_1', 'x') does not produce correct order of terms and their svg submobjects neither for '^' going first, nor for '_' going first. See MinimalWithSum Scene example.
Expected behavior
Tex strings of every SingleStringMathTex submobject of MathTex should correspond to their rendered symbol.
How to reproduce the issue
Code for reproducing the problem
from manim import *
class Minimal(Scene):
def construct(self):
""" This shows that substring may not correspond to tex shape """
eq1 = MathTex('A', '^n', '_1') # expected behavior
eq2 = MathTex('A', '_1', '^n') # unexpected behavior
eq1[1].set_color(RED)
eq2[1].set_color(RED)
font = {'font_size': 24}
txt1 = Text(eq1[1].get_tex_string(), color=RED, **font) # '^n'
txt2 = Text(eq2[1].get_tex_string(), color=RED, **font) # '_1'
cap1 = Text('tex rendered', **font)
cap2 = Text('tex substring', **font)
grp = VGroup(cap1, cap2, eq1, txt1, eq2, txt2).arrange_in_grid(3,2)
grp.scale(2).move_to(ORIGIN)
self.add(grp)
class MinimalWithSum(Scene):
def construct(self):
""" This shows that substring may not correspond to tex shape """
t2cm = {'\sum': BLUE, '^n': RED, '_1': GREEN, 'x':YELLOW}
eq1 = MathTex('\sum', '^n', '_1', 'x', tex_to_color_map=t2cm) # unexpected behavior, first 2 terms messed up
eq2 = MathTex('\sum', '_1', '^n', 'x', tex_to_color_map=t2cm) # unexpected behavior, first 3 terms messed up
font = {'font_size': 24}
txts = [Text(sub.get_tex_string(), t2c=t2cm, **font) for sub in (eq1, eq2) for i in range(len(sub))]
txt1 = VGroup(*txts[:4])
txt2 = VGroup(*txts[4:])
cap1 = Text('tex rendered', **font)
cap2 = Text('tex substrings', **font)
grp = VGroup(cap1, cap2, eq1, txt1, eq2, txt2).arrange_in_grid(3,2)
grp.scale(2).move_to(ORIGIN)
self.add(grp)Additional media files
Images/GIFs
Logs
Terminal output
Manim Community v0.18.0
[12/26/23 02:29:27] INFO scene_file_writer.py:735
File ready at
'D:\manim\media\images\test_bug\Minimal_ManimCE_v0.18.0.png'
INFO Rendered Minimal scene.py:241
Played 0 animations
INFO Previewed File at: file_ops.py:227
'D:\manim\media\images\test_bug\Minimal_ManimCE_v0.18.0.png'
System specifications
System Details
- OS (with version, e.g., Windows 10 v2004 or macOS 10.15 (Catalina)): Windows 10 v22H2
- RAM 32:
- Python version (
python/py/python3 --version): 3.11.3 - Installed modules (provide output from
pip list):
Package Version
------------------------- ----------
asttokens 2.0.5
attrs 23.1.0
backcall 0.2.0
backports.cached-property 1.0.2
brotlipy 0.7.0
build 0.10.0
CacheControl 0.12.11
certifi 2023.11.17
cffi 1.15.1
charset-normalizer 3.1.0
cleo 2.0.1
click 8.1.3
click-default-group 1.2.2
cloudpickle 2.2.1
cloup 0.13.1
colorama 0.4.6
colour 0.1.5
comm 0.1.2
crashtest 0.4.1
cryptography 38.0.4
dataclasses 0.8
debugpy 1.5.1
decorator 5.1.1
distlib 0.3.6
dulwich 0.21.5
executing 0.8.3
filelock 3.12.0
future 0.18.3
glcontext 2.3.7
html5lib 1.1
idna 3.4
importlib-metadata 6.6.0
importlib-resources 5.12.0
installer 0.7.0
ipykernel 6.19.2
ipython 8.12.0
isosurfaces 0.1.0
jaraco.classes 3.2.3
jedi 0.18.1
jsonschema 4.17.3
jupyter_client 8.1.0
jupyter_core 5.3.0
keyring 23.13.1
lockfile 0.12.2
manim 0.18.0
ManimPango 0.5.0
mapbox-earcut 1.0.0
markdown-it-py 2.2.0
matplotlib-inline 0.1.6
mdurl 0.1.0
moderngl 5.8.2
moderngl-window 2.4.1
more-itertools 9.1.0
msgpack 1.0.5
multipledispatch 0.6.0
nest-asyncio 1.5.6
networkx 2.8.8
numpy 1.24.3
packaging 23.1
parso 0.8.3
pexpect 4.8.0
pickleshare 0.7.5
Pillow 9.5.0
pip 23.0.1
pkginfo 1.9.6
pkgutil_resolve_name 1.3.10
platformdirs 3.5.1
poetry 1.5.0
poetry-core 1.6.0
poetry-plugin-export 1.3.1
pooch 1.7.0
prompt-toolkit 3.0.36
psutil 5.9.0
ptyprocess 0.7.0
pure-eval 0.2.2
pycairo 1.23.0
pycparser 2.21
pydub 0.25.1
pyglet 1.5.27
Pygments 2.15.1
pyOpenSSL 23.1.1
pyproject_hooks 1.0.0
pyrr 0.10.3
pyrsistent 0.19.3
PySocks 1.7.1
python-dateutil 2.8.2
pywin32 305.1
pywin32-ctypes 0.2.0
PyYAML 6.0
pyzmq 25.0.2
rapidfuzz 2.15.1
requests 2.31.0
requests-toolbelt 1.0.0
rich 13.3.5
scipy 1.10.1
screeninfo 0.8.1
setuptools 66.0.0
shellingham 1.5.1
six 1.16.0
skia-pathops 0.7.4
spyder-kernels 2.4.3
srt 3.5.2
stack-data 0.2.0
svgelements 1.9.5
tomli 2.0.1
tomlkit 0.11.8
tornado 6.2
tqdm 4.65.0
traitlets 5.7.1
trove-classifiers 2023.5.22
typing_extensions 4.9.0
urllib3 1.26.15
virtualenv 20.23.0
watchdog 2.2.1
wcwidth 0.2.5
webencodings 0.5.1
wheel 0.38.4
win-inet-pton 1.1.0
zipp 3.15.0
LaTeX details
- LaTeX distribution (e.g. TeX Live 2020): TeX Live 2021
- Installed LaTeX packages:
</details>
## Additional comments
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