179 results about "Control point" patented technology

In computer-aided geometric design a control point is a member of a set of points used to determine the shape of a spline curve or, more generally, a surface or higher-dimensional object. For Bézier curves, it has become customary to refer to the d-vectors pᵢ in a parametric representation ∑ᵢ pᵢϕᵢ of a curve or surface in d-space as control points, while the scalar-valued functions ϕᵢ, defined over the relevant parameter domain, are the corresponding weight or blending functions.