SVGMobject can’t have a Write animation applied to it when using OpenGL as the backend.
Expected behavior
Like the animation Create on svg, with no error.
How to reproduce the issue
Code for reproducing the problem
```py
%%manim -v WARNING --disable_caching --renderer=opengl --write_to_movie T
class T(Scene):
def construct(self):
svg = SVGMobject('TEST.svg')
self.play(Write(svg))
```
Logs
Terminal output
```
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
Cell In[2], line 1
----> 1 get_ipython().run_cell_magic('manim', '-v WARNING --disable_caching --renderer=opengl --write_to_movie T', "\nclass T(Scene):\n def construct(self):\n svg = SVGMobject('TEST.svg')\n self.play(Write(svg))\n")
File ~/miniconda3/envs/manim/lib/python3.11/site-packages/IPython/core/interactiveshell.py:2478, in InteractiveShell.run_cell_magic(self, magic_name, line, cell)
2476 with self.builtin_trap:
2477 args = (magic_arg_s, cell)
-> 2478 result = fn(*args, **kwargs)
2480 # The code below prevents the output from being displayed
2481 # when using magics with decodator @output_can_be_silenced
2482 # when the last Python token in the expression is a ';'.
2483 if getattr(fn, magic.MAGIC_OUTPUT_CAN_BE_SILENCED, False):
File ~/miniconda3/envs/manim/lib/python3.11/site-packages/manim/utils/ipython_magic.py:141, in ManimMagic.manim(self, line, cell, local_ns)
139 SceneClass = local_ns[config["scene_names"][0]]
140 scene = SceneClass(renderer=renderer)
--> 141 scene.render()
142 finally:
143 # Shader cache becomes invalid as the context is destroyed
144 shader_program_cache.clear()
File ~/miniconda3/envs/manim/lib/python3.11/site-packages/manim/scene/scene.py:223, in Scene.render(self, preview)
221 self.setup()
222 try:
--> 223 self.construct()
224 except EndSceneEarlyException:
225 pass
File :5, in construct(self)
File ~/miniconda3/envs/manim/lib/python3.11/site-packages/manim/scene/scene.py:1082, in Scene.play(self, subcaption, subcaption_duration, subcaption_offset, *args, **kwargs)
1079 return
1081 start_time = self.renderer.time
-> 1082 self.renderer.play(self, *args, **kwargs)
1083 run_time = self.renderer.time - start_time
1084 if subcaption:
File ~/miniconda3/envs/manim/lib/python3.11/site-packages/manim/utils/caching.py:65, in handle_caching_play..wrapper(self, scene, *args, **kwargs)
60 self.file_writer.add_partial_movie_file(hash_play)
61 logger.debug(
62 "List of the first few animation hashes of the scene: %(h)s",
63 {"h": str(self.animations_hashes[:5])},
64 )
---> 65 func(self, scene, *args, **kwargs)
File ~/miniconda3/envs/manim/lib/python3.11/site-packages/manim/renderer/opengl_renderer.py:424, in OpenGLRenderer.play(self, scene, *args, **kwargs)
421 self.file_writer.begin_animation(not self.skip_animations)
423 scene.compile_animation_data(*args, **kwargs)
--> 424 scene.begin_animations()
425 if scene.is_current_animation_frozen_frame():
426 self.update_frame(scene)
File ~/miniconda3/envs/manim/lib/python3.11/site-packages/manim/scene/scene.py:1210, in Scene.begin_animations(self)
1208 for animation in self.animations:
1209 animation._setup_scene(self)
-> 1210 animation.begin()
1212 if config.renderer == RendererType.CAIRO:
1213 # Paint all non-moving objects onto the screen, so they don't
1214 # have to be rendered every frame
1215 (
1216 self.moving_mobjects,
1217 self.static_mobjects,
1218 ) = self.get_moving_and_static_mobjects(self.animations)
File ~/miniconda3/envs/manim/lib/python3.11/site-packages/manim/animation/creation.py:364, in Write.begin(self)
362 if self.reverse:
363 self.reverse_submobjects()
--> 364 super().begin()
File ~/miniconda3/envs/manim/lib/python3.11/site-packages/manim/animation/creation.py:253, in DrawBorderThenFill.begin(self)
251 def begin(self) -> None:
252 self.outline = self.get_outline()
--> 253 super().begin()
File ~/miniconda3/envs/manim/lib/python3.11/site-packages/manim/animation/animation.py:203, in Animation.begin(self)
195 if self.suspend_mobject_updating:
196 # All calls to self.mobject's internal updaters
197 # during the animation, either from this Animation
(...)
200 # the internal updaters of self.starting_mobject,
201 # or any others among self.get_all_mobjects()
202 self.mobject.suspend_updating()
--> 203 self.interpolate(0)
File ~/miniconda3/envs/manim/lib/python3.11/site-packages/manim/animation/animation.py:323, in Animation.interpolate(self, alpha)
312 def interpolate(self, alpha: float) -> None:
313 """Set the animation progress.
314
315 This method gets called for every frame during an animation.
(...)
321 the end.
322 """
--> 323 self.interpolate_mobject(alpha)
File ~/miniconda3/envs/manim/lib/python3.11/site-packages/manim/animation/animation.py:338, in Animation.interpolate_mobject(self, alpha)
336 for i, mobs in enumerate(families):
337 sub_alpha = self.get_sub_alpha(alpha, i, len(families))
--> 338 self.interpolate_submobject(*mobs, sub_alpha)
File ~/miniconda3/envs/manim/lib/python3.11/site-packages/manim/animation/creation.py:284, in DrawBorderThenFill.interpolate_submobject(self, submobject, starting_submobject, outline, alpha)
282 if index == 0:
283 submobject.pointwise_become_partial(outline, 0, subalpha)
--> 284 submobject.match_style(outline)
285 else:
286 submobject.interpolate(outline, starting_submobject, subalpha)
File ~/miniconda3/envs/manim/lib/python3.11/site-packages/manim/mobject/opengl/opengl_vectorized_mobject.py:313, in OpenGLVMobject.match_style(self, vmobject, recurse)
311 vmobject_style = vmobject.get_style()
312 if config.renderer == RendererType.OPENGL:
--> 313 vmobject_style["stroke_width"] = vmobject_style["stroke_width"][0][0]
314 self.set_style(**vmobject_style, recurse=False)
315 if recurse:
316 # Does its best to match up submobject lists, and
317 # match styles accordingly
TypeError: 'NoneType' object is not subscriptable
```
MrDiver
commented
1 year ago
Description of bug / unexpected behavior
SVGMobject can’t have a Write animation applied to it when using OpenGL as the backend.
Expected behavior
Like the animation
Createon svg, with no error.How to reproduce the issue
Code for reproducing the problem
```py %%manim -v WARNING --disable_caching --renderer=opengl --write_to_movie T class T(Scene): def construct(self): svg = SVGMobject('TEST.svg') self.play(Write(svg)) ```Logs
Terminal output
``` --------------------------------------------------------------------------- TypeError Traceback (most recent call last) Cell In[2], line 1 ----> 1 get_ipython().run_cell_magic('manim', '-v WARNING --disable_caching --renderer=opengl --write_to_movie T', "\nclass T(Scene):\n def construct(self):\n svg = SVGMobject('TEST.svg')\n self.play(Write(svg))\n") File ~/miniconda3/envs/manim/lib/python3.11/site-packages/IPython/core/interactiveshell.py:2478, in InteractiveShell.run_cell_magic(self, magic_name, line, cell) 2476 with self.builtin_trap: 2477 args = (magic_arg_s, cell) -> 2478 result = fn(*args, **kwargs) 2480 # The code below prevents the output from being displayed 2481 # when using magics with decodator @output_can_be_silenced 2482 # when the last Python token in the expression is a ';'. 2483 if getattr(fn, magic.MAGIC_OUTPUT_CAN_BE_SILENCED, False): File ~/miniconda3/envs/manim/lib/python3.11/site-packages/manim/utils/ipython_magic.py:141, in ManimMagic.manim(self, line, cell, local_ns) 139 SceneClass = local_ns[config["scene_names"][0]] 140 scene = SceneClass(renderer=renderer) --> 141 scene.render() 142 finally: 143 # Shader cache becomes invalid as the context is destroyed 144 shader_program_cache.clear() File ~/miniconda3/envs/manim/lib/python3.11/site-packages/manim/scene/scene.py:223, in Scene.render(self, preview) 221 self.setup() 222 try: --> 223 self.construct() 224 except EndSceneEarlyException: 225 pass FileSystem specifications
System Details
- OS: WSL2 Ubuntu 22.04.1 LTS - Python version: 3.11