//! the curve by algorithms, which use it.
//! A derived concrete class is provided:
//! Geom2dAdaptor_Curve for a curve from the Geom2d package.
+//!
+//! Polynomial coefficients of BSpline curves used for their evaluation are
+//! cached for better performance. Therefore these evaluations are not
+//! thread-safe and parallel evaluations need to be prevented.
class Adaptor2d_Curve2d
{
public: