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is_degenerate

read_fonts::ps::transform

Function is_degenerate 

Source 
pub(crate) fn is_degenerate(matrix: &FontMatrix) -> bool
Expand description

Check for a degenerate matrix. See https://gitlab.freedesktop.org/freetype/freetype/-/blob/f1cd6dbfa0c98f352b698448f40ac27e8fb3832e/src/base/ftcalc.c#L725