pub fn corner_to_corner(a_mils: f64, b_mils: f64) -> Result<f64, CalcError>Expand description
Calculate the corner-to-corner (diagonal) distance between two points.
§Arguments
a_mils— horizontal span in mils (must be ≥ 0)b_mils— vertical span in mils (must be ≥ 0)
Returns the Euclidean distance √(a² + b²) in mils.
§Errors
Returns CalcError::NegativeDimension if either dimension is negative.