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

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!