Manim: Manim written in different language produces an error

[Ayan2357]

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[Ayan2357]

I had been trying to create a scene using #525 but had been getting a error "Latex error converting to dvi" to which i tried following #36 but still kept getting the error. Also, i would like to try the assamese language in manim. Can you guide me the steps?

[tshrpl]

i would like to try the assamese language in manim

manim uses Latex at its core, which only supports english by default ..... but there are numerous Latex packages which for other languages, try searching them.
edit: I found this package https://ctan.org/pkg/bangtex?lang=en (maybe outdated, I haven't tested !)

"Latex error converting to dvi"

share the full error and log files ..

[Ayan2357]

This is the error

Traceback (most recent call last):
File "C:\Manim\manim_3_feb\manimlib\extract_scene.py", line 153, in main
scene = SceneClass(*scene_kwargs)
File "C:\Manim\manim_3_feb\manimlib\scene\scene.py", line 54, in __init__
self.construct()
File "tutorial\1_text_format.py", line 222, in construct
tex=TextMobject("\jap{これはmanimのあるアニメーションです}").scale(1.5)
File "C:\Manim\manim_3_feb\manimlib\mobject\svg\tex_mobject.py", line 144, in __init__
self, self.arg_separator.join(tex_strings), *kwargs
File "C:\Manim\manim_3_feb\manimlib\mobject\svg\tex_mobject.py", line 45, in __init__
self.template_tex_file_body
File "C:\Manim\manim_3_feb\manimlib\utils\tex_file_writing.py", line 20, in tex_to_svg_file
dvi_file = tex_to_dvi(tex_file)
File "C:\Manim\manim_3_feb\manimlib\utils\tex_file_writing.py", line 67, in tex_to_dvi
"See log output above or the log file: %s" % log_file)
Exception: Latex error converting to dvi. See log output above or the log file: C:\Manim\manim_3_feb\manimlib\filesTex\e89320de1c1ff07e.log

[Ayan2357]

And this is the log file

This is pdfTeX, Version 3.14159265-2.6-1.40.21 (MiKTeX 2.9.7400 64-bit) (preloaded format=latex 2020.4.29) 29 APR 2020 21:22
entering extended mode
*C:/Manim/manim_3_feb/manimlib/files/Tex/e89320de1c1ff07e.tex
(C:/Manim/manim_3_feb/manimlib/files/Tex/e89320de1c1ff07e.tex
LaTeX2e <2020-02-02> patch level 5
L3 programming layer <2020-04-06>)
! Emergency stop.
<> ...feb/manimlib/files/Tex/e89320de1c1ff07e.tex

Here is how much of TeX's memory you used:
20 strings out of 480931
627 string characters out of 2909553
239226 words of memory out of 3000000
15990 multiletter control sequences out of 15000+200000
532338 words of font info for 24 fonts, out of 3000000 for 9000
1141 hyphenation exceptions out of 8191
12i,0n,15p,92b,8s stack positions out of 5000i,500n,10000p,200000b,50000s

No pages of output.

[tshrpl]

do you have tlmgr installed on your windows system? (test it by typing on cmd)

[Ayan2357]

It is not installed

[Ayan2357]

i have miktex, havent tried tex live

[tshrpl]

install the bangtex package, and edit this file to include it manimlib/utils/tex_template.tex

[Ayan2357]

I have the bangtex package installed. But what exactly do i edit?

[Ayan2357]

When i tried checking #525, and followed its edit for the japanese language, it did not work as intended and i got the "Latex error converting to dvi" error.

[Ayan2357]

@tshrpl Can you provide me with the edits that i need to do in the tex_template.tex file?

[tshrpl]

instead of configuring your latex system, I suggest using custom fonts ....
the result will be pretty good

class test_3(Scene):
    def construct(self):
        text1 = Text('বাংলা লেখা', font='Akaash')
        text2 = Text('english text', font='Arial').move_to(DOWN)
        self.play(Write(text1), Write(text2))
        self.wait()

[tshrpl]

steps

• download any font from here (bangla and assamese) and install on system
• follow this video to setup Text MObject to use pc fonts

[Ayan2357]

@tshrpl It is working. But there are inconsistencies. For instance, you have written বাংলা লেখা but if you look closely at the output, it is বাংলা লখো. Most of the times it spits out absolutely meaningless words.

[tshrpl]

meaningless words

(well, I'm not a native speaker so sorry for the nonsense you had to read I used google translate) ...

this is an encoding problem, not a problem in manim ..... there are some char like "..." which are treated like single char instead of multiple in unicode, but there is also a "..." (multiple char version)

try this in python
print('লে')
and see the output in terminal, it's two chars right ... but you just pasted one char in your text editor !?!
try searching for the single char version ...

bangla/assamese unicode encoding is inherently broken

workaround for now

class bangla_test_6(Scene):
    def construct(self):
        text1 = Text('অসমীয়া েলখা', font='Akaash').move_to(UP)
        text2 = Text('বাংলা েলখা', font='Akaash')
        text3 = Text('english text', font='Arial').move_to(DOWN)
        self.play(Write(text1), Write(text2), Write(text3))
        self.wait()

maybe useful

[Ayan2357]

@tshrpl This one did help in solving some issues but not all. Like i tried এনেদৰে, but just couldn't come up with anything.

[tshrpl]

class bangla_3(Scene):
    def construct(self):
        text1 = Text('এেনদেৰ', font='Akaash')
        self.play(Write(text1))
        self.wait()

[tshrpl]

# not heavily tested
def format_assamese_text(s):
    s = list(s)
    for i in range(1, len(s)):
        if s[i] == 'ে':
            s[i-1], s[i] = s[i], s[i-1]
    return ''.join(s)