Function msdfgen_sys::msdfgen_distanceSignCorrection

pub unsafe extern "C" fn msdfgen_distanceSignCorrection(
    sdf: *const u8, 
    shape: *const msdfgen_Shape, 
    scale: *const msdfgen_Vector2, 
    translate: *const msdfgen_Vector2, 
    fillRule: msdfgen_FillRule
)

Fixes the sign of the input signed distance field, so that it matches the shape's rasterized fill.