Closed
Description
Description of bug / unexpected behavior
The PointWithTrace example no longer shows the trace as of version 0.19.0.
See https://docs.manim.community/en/stable/examples.html#pointwithtrace.
Expected behavior
The trace should display (or perhaps the example should be rewritten/removed).
On version 0.18.1, the trace does display.
How to reproduce the issue
Code for reproducing the problem
from manim import *
class PointWithTrace(Scene):
def construct(self):
path = VMobject()
dot = Dot()
path.set_points_as_corners([dot.get_center(), dot.get_center()])
def update_path(path):
previous_path = path.copy()
previous_path.add_points_as_corners([dot.get_center()])
path.become(previous_path)
path.add_updater(update_path)
self.add(path, dot)
self.play(Rotating(dot, radians=PI, about_point=RIGHT, run_time=2))
self.wait()
self.play(dot.animate.shift(UP))
self.play(dot.animate.shift(LEFT))
self.wait()Additional media files
Images/GIFs
PointWithTrace.mp4
Logs
Terminal output
Manim Community v0.19.0
[04/15/25 20:51:01] DEBUG Hashing ... hashing.py:352
DEBUG Hashing done in 0.002606 s. hashing.py:364
DEBUG Hash generated : 3977891868_2076493038_3391789843 hashing.py:367
INFO Animation 0 : Using cached data (hash : 3977891868_2076493038_3391789843) cairo_renderer.py:89
DEBUG List of the first few animation hashes of the scene: ['3977891868_2076493038_3391789843'] cairo_renderer.py:98
DEBUG Animation with empty mobject animation.py:190
DEBUG Hashing ... hashing.py:352
DEBUG Hashing done in 0.002324 s. hashing.py:364
DEBUG Hash generated : 2852726489_2834709167_2777518013 hashing.py:367
INFO Animation 1 : Using cached data (hash : 2852726489_2834709167_2777518013) cairo_renderer.py:89
DEBUG List of the first few animation hashes of the scene: ['3977891868_2076493038_3391789843', '2852726489_2834709167_2777518013'] cairo_renderer.py:98
DEBUG Hashing ... hashing.py:352
DEBUG Hashing done in 0.004027 s. hashing.py:364
DEBUG Hash generated : 2852726489_3168925982_2631930603 hashing.py:367
INFO Animation 2 : Using cached data (hash : 2852726489_3168925982_2631930603) cairo_renderer.py:89
DEBUG List of the first few animation hashes of the scene: ['3977891868_2076493038_3391789843', '2852726489_2834709167_2777518013', '2852726489_3168925982_2631930603'] cairo_renderer.py:98
DEBUG Hashing ... hashing.py:352
DEBUG Hashing done in 0.003338 s. hashing.py:364
DEBUG Hash generated : 2852726489_2696038255_2631930603 hashing.py:367
INFO Animation 3 : Using cached data (hash : 2852726489_2696038255_2631930603) cairo_renderer.py:89
DEBUG List of the first few animation hashes of the scene: ['3977891868_2076493038_3391789843', '2852726489_2834709167_2777518013', '2852726489_3168925982_2631930603', cairo_renderer.py:98
'2852726489_2696038255_2631930603']
DEBUG Animation with empty mobject animation.py:190
DEBUG Hashing ... hashing.py:352
DEBUG Hashing done in 0.002884 s. hashing.py:364
DEBUG Hash generated : 2852726489_2834709167_3890943015 hashing.py:367
INFO Animation 4 : Using cached data (hash : 2852726489_2834709167_3890943015) cairo_renderer.py:89
DEBUG List of the first few animation hashes of the scene: ['3977891868_2076493038_3391789843', '2852726489_2834709167_2777518013', '2852726489_3168925982_2631930603', cairo_renderer.py:98
'2852726489_2696038255_2631930603', '2852726489_2834709167_3890943015']
INFO Combining to Movie file. scene_file_writer.py:739
DEBUG Partial movie files to combine (5 files): scene_file_writer.py:622
['/home/ryan/.../manim_examples/media/videos/point_with_trace/1080p60/partial_movie_files/PointWithTrace/3977891868_2076493038_3391789843.mp4',
'/home/ryan/.../manim_examples/media/videos/point_with_trace/1080p60/partial_movie_files/PointWithTrace/2852726489_2834709167_2777518013.mp4',
'/home/ryan/.../manim_examples/media/videos/point_with_trace/1080p60/partial_movie_files/PointWithTrace/2852726489_3168925982_2631930603.mp4',
'/home/ryan/.../manim_examples/media/videos/point_with_trace/1080p60/partial_movie_files/PointWithTrace/2852726489_2696038255_2631930603.mp4',
'/home/ryan/.../manim_examples/media/videos/point_with_trace/1080p60/partial_movie_files/PointWithTrace/2852726489_2834709167_3890943015.mp4']
INFO scene_file_writer.py:886
File ready at '/home/ryan/.../manim_examples/media/videos/point_with_trace/1080p60/PointWithTrace.mp4'
INFO Rendered PointWithTrace scene.py:255
Played 5 animations
INFO Previewed File at: '/home/ryan/.../manim_examples/media/videos/point_with_trace/1080p60/PointWithTrace.mp4' file_ops.py:237
System specifications
System Details
- OS (with version, e.g., Windows 10 v2004 or macOS 10.15 (Catalina)): Linux Mint 22.1
- RAM: 16 GB
- Python version (
python/py/python3 --version): Python 3.12.3 - Installed modules (provide output from
pip list):
Package Version
------------------- -----------
av 13.1.0
beautifulsoup4 4.13.4
certifi 2025.1.31
charset-normalizer 3.4.1
click 8.1.8
click-default-group 1.2.4
cloup 2.1.2
decorator 5.2.1
glcontext 3.0.0
idna 3.10
isosurfaces 0.1.0
manim 0.19.0
ManimPango 0.6.0
mapbox_earcut 1.0.3
markdown-it-py 3.0.0
mdurl 0.1.2
moderngl 5.12.0
moderngl-window 3.1.1
multipledispatch 1.0.0
networkx 3.2.1
numpy 2.2.4
pillow 11.2.1
pip 25.0.1
pycairo 1.28.0
pydub 0.25.1
pyglet 2.1.3
pyglm 2.8.2
Pygments 2.19.1
pyrr 0.10.3
requests 2.32.3
rich 14.0.0
scipy 1.15.2
screeninfo 0.8.1
skia-pathops 0.8.0.post2
soupsieve 2.6
srt 3.5.3
svgelements 1.9.6
tqdm 4.67.1
typing_extensions 4.13.2
urllib3 2.4.0
watchdog 3.0.0
LaTeX details
- LaTeX distribution (e.g. TeX Live 2020):
texlive-full (2023.20240207-1) - Installed LaTeX packages:
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