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double Geom::Matrix::expansionY (  )  const

Calculates the amount of y-scaling imparted by the Matrix. This is the scaling applied before the other transformations. It is {not} the overall y-scaling of the transformation. Equivalent to L2(m.yAxis())

Definition at line 81 of file matrix.cpp.

Referenced by sp_item_invoke_bbox_full().

                                {
    return sqrt(_c[2] * _c[2] + _c[3] * _c[3]);
}


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