A QuadraticSpline3d is a quadratic Bézier curve
in 3D defined by a start point, control point and end point. This module
contains functionality for
An ArcLengthParameterized value is a combination of an
ArcLengthParameterization and an
underlying QuadraticSpline3d. If you need to do something fancy, you can
extract these two values separately.
You are unlikely to need to use these functions directly, but they are useful if you are writing low-level geometric algorithms.