Text always rendered in 3D scene

[SzymonOzog]

Description of bug / unexpected behavior

Text objects are always rendered, even if they are behind objects

Expected behavior

Text should render only partailly when behind an object

How to reproduce the issue

Code for reproducing the problem

```py class TestScene(ThreeDScene): def construct(self): text = Text("TEXT", font_size=55).shift(2*IN) cube = Cube(fill_opacity=1).shift(IN) cube2 = Cube(side_length=0.5, fill_opacity=1, fill_color=RED) self.add(text) self.add(cube) self.add(cube2) self.move_camera(theta=-radians(65), gamma=radians(45), phi=-radians(45)) ```

Additional media files

Images/GIFs


Logs

Terminal output

``` Manim Community v0.18.1 [06/24/24 15:59:46] DEBUG Hashing ... hashing.py:352 DEBUG Hashing done in 0.045246 s. hashing.py:364 DEBUG Hash generated : 219949060_2797083003_878849922 hashing.py:367 INFO Animation 0 : Using cached data (hash : 219949060_2797083003_878849922) cairo_renderer.py:88 DEBUG List of the first few animation hashes of the scene: ['219949060_2797083003_878849922'] cairo_renderer.py:97 INFO Combining to Movie file. scene_file_writer.py:617 DEBUG Partial movie files to combine (1 files): ['/home/oz/repos/CUDA/media/videos/temp/480p15/partial_movie_files/TestScene/219949060_2797083003_878849922.mp4'] scene_file_writer.py:561 INFO scene_file_writer.py:737 File ready at '/home/oz/repos/CUDA/media/videos/temp/480p15/TestScene.mp4' INFO Rendered TestScene scene.py:247 Played 1 animations ```

System specifications

System Details

- OS (with version, e.g., Windows 10 v2004 or macOS 10.15 (Catalina)): debian 12 - RAM: 32 GB - Python version (`python/py/python3 --version`): python 3.11.2 - Installed modules (provide output from `pip list`): attrs 23.2.0 azure-cognitiveservices-speech 1.38.0 cattrs 23.2.3 certifi 2024.6.2 charset-normalizer 3.3.2 click 8.1.7 cloup 3.0.5 decorator 5.1.1 docstring-to-markdown 0.15 glcontext 2.5.0 gTTS 2.5.1 idna 3.7 isosurfaces 0.1.2 jedi 0.19.1 jedi-language-server 0.41.4 lsprotocol 2023.0.1 manim 0.18.1 manim-voiceover 0.3.6.post0 ManimPango 0.5.0 mapbox-earcut 1.0.1 markdown-it-py 3.0.0 mdurl 0.1.2 moderngl 5.10.0 moderngl-window 2.4.6 multipledispatch 1.0.0 mutagen 1.47.0 networkx 3.3 numpy 1.26.4 parso 0.8.4 pillow 10.3.0 pip 23.0.1 pycairo 1.26.1 pydub 0.25.1 pyglet 2.0.15 pygls 1.3.1 Pygments 2.18.0 pyrr 0.10.3 python-dotenv 0.21.1 python-slugify 8.0.4 requests 2.32.3 rich 13.7.1 ruff 0.4.10 scipy 1.13.1 screeninfo 0.8.1 setuptools 66.1.1 skia-pathops 0.8.0.post1 sox 1.5.0 srt 3.5.3 svgelements 1.9.6 text-unidecode 1.3 tqdm 4.66.4 typing_extensions 4.12.2 urllib3 2.2.2 watchdog 4.0.1 ``` PASTE HERE ```

LaTeX details

+ LaTeX distribution (e.g. TeX Live 2020): + Installed LaTeX packages:

Additional comments

[uwezi]

This is a known limitation of the Cairo rendering routines currently used in Manim and it is not limited to text objects: the removal of hidden objects is not working in general.

[SzymonOzog]

Is there any way to get around it? It seems to work fine for other objects and not on Text. Tried with Code and Cube

[uwezi]

Is there any way to get around it? It seems to work fine for other objects and not on Text. Tried with Code and Cube

you might have just been lucky then, because it fails more often than it succeeds. You could try to set the objects' set_z_index()

[MrDiver]

Will be fixed in GL version in the future!