The formulas for the Svg lines

Svg: what do the curve equations for Svg lines look like?

An Svg line with start and end point

Fig: An Svg line with start and end point

The formulas for the Svg line

Fig: The formulas for the Svg line

Here are the basic equations, adapted to the Svg line segments. It is easy to keep the computing effort to a minimum. And because the second derivative is constant zero, there is no osculating circle.