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scale stroke_width if font_size is too small or too big

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Irvanal Haq 2025-04-23 17:50:42 +07:00
commit 7eddf9ea65
1 changed files with 12 additions and 8 deletions
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20
manim/animation/creation.py
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@ -294,17 +294,17 @@ class DrawBorderThenFill(Animation):
class Write(DrawBorderThenFill):
"""Simulate hand-writing a text-based mobject, such as :class:`~.Text`,
:class:`~.MarkupText`, :class:`~.Tex`, :class:`~.MathTex`,
or :class:`~.VMobject` in general.
"""Simulate hand-writing a text-based mobject, such as :class:`~.Text`
and :class:`~.Tex`, or simulate hand-drawing a :class:`~.VMobject`.
Parameters
----------
vmobject
The VMobject to animate.
stroke_width
Stroke width for drawing. If not given, for SVG-based mobjects (such as :class:`Text`, :class:`MarkupText`, or :class:`MathTex`)
the stroke width is scaled relative to the font size. Others use 2.0.
Stroke width for drawing. If not provided, it is scaled based on font size
for text-based mobjects when the font is very small or very large;
otherwise defaults to 2.0.
rate_func
The function defining the animation progress.
reverse
@ -386,10 +386,14 @@ class Write(DrawBorderThenFill):
) -> float:
if stroke_width is not None:
return stroke_width
if not isinstance(vmobject, SVGMobject):
return 2.0 # default in DrawBorderThenFill
if not isinstance(vmobject, SVGMobject) or vmobject.height == 0:
return 2
font_size = getattr(vmobject, "font_size", DEFAULT_FONT_SIZE)
return (font_size / DEFAULT_FONT_SIZE) * DEFAULT_STROKE_WIDTH * scale_factor
if font_size < 20 or font_size > 6 * DEFAULT_FONT_SIZE:
# adjust stroke_width if font_size is too small or too big
return (font_size / DEFAULT_FONT_SIZE) * DEFAULT_STROKE_WIDTH * scale_factor
else:
return 2
def reverse_submobjects(self) -> None:
self.mobject.invert(recursive=True)