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#include "libnr/nr-matrix-ops.h"
/**
* Returns the distance from the transformed baseline to the
* transformation of a point at (0, 1); or 0 if \a m has no inverse.
*/
double
fontsize_expansion(NR::Matrix const &m)
{
double const denom(hypot(m[0], m[1]));
if (!(denom > 1e-100)) {
return 0.;
}
double const numer(m.descrim2());
if (!(numer > 1e-100)) {
return 0.;
}
return numer / denom;
}
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
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