CubicCurvesegļƒ

class CubicCurvesegļƒ

Bases: ParametricCurve

A CubicCurveseg is any curve that can be completely described by four 4-valued basis vectors, one for each dimension in three-space, and one for the homogeneous coordinate. This includes Beziers, Hermites, and NURBS.

This class encapsulates a single curve segment of the cubic curve. Normally, when we think of Bezier and Hermite curves, we think of a piecewise collection of such segments.

Although this class includes methods such as hermite_basis() and nurbs_basis(), to generate a Hermite and NURBS curve segment, respectively, only the final basis vectors are stored: the product of the basis matrix of the corresponding curve type, and its geometry vectors. This is the minimum information needed to evaluate the curve. However, the individual CVā€™s that were used to compute these basis vectors are not retained; this might be handled in a subclass (for instance, HermiteCurve).

Inheritance diagram

Inheritance diagram of CubicCurveseg

static TypeHandle get_class_type(void)ļƒ