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SVG single-factor scaling

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Some fonts (like mathpazo) produce svg files which use single scale-factor transform (like `transform=scale(1.3)`). Previously the behavior of this code was to throw an unpacking exception in the try block, which resulted in the font glyphs misrendering. 

I would think that the `about_point` should be `ORIGIN` for the [scale_x, scale_y, 1] block as well, but I only put that change in the `elif` clause so that the proposed change would be non-breaking.
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sswatson 2018-11-24 16:37:45 -05:00 • committed by GitHub
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commit 3e104a1ffb
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mobject/svg/svg_mobject.py
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@ -264,8 +264,13 @@ class SVGMobject(VMobject):
if not transform.startswith(prefix) or not transform.endswith(suffix):
raise Exception()
transform = transform[len(prefix):-len(suffix)]
scale_x, scale_y = string_to_numbers(transform)
mobject.scale(np.array([scale_x, scale_y, 1]))
scale_values = string_to_numbers(transform)
if len(scale_values) == 2:
scale_x, scale_y = scale_values
mobject.scale(np.array([scale_x, scale_y, 1]))
elif len(scale_values) == 1:
scale = scale_values[0]
mobject.scale(np.array([scale,scale,1]), about_point = ORIGIN)
except:
pass