Tulip  5.2.1 Large graphs analysis and drawing
tlp::GlOpenUniformCubicBSpline Class Reference

`#include <GlOpenUniformCubicBSpline.h>`

Inherits AbstractGlCurve.

## Public Member Functions

GlOpenUniformCubicBSpline ()

GlOpenUniformCubicBSpline (const std::vector< Coord > &controlPoints, const Color &startColor, const Color &endColor, const float startSize, const float endSize, const unsigned int nbCurvePoints=200)

void drawCurve (std::vector< Coord > &controlPoints, const Color &startColor, const Color &endColor, const float startSize, const float endSize, const unsigned int nbCurvePoints=200) override

## Protected Member Functions

Coord computeCurvePointOnCPU (const std::vector< Coord > &controlPoints, float t) override

void computeCurvePointsOnCPU (const std::vector< Coord > &controlPoints, std::vector< Coord > &curvePoints, unsigned int nbCurvePoints) override

## Detailed Description

A class to draw open uniform cubic B-splines.

A B-spline is a convenient form for representing complicated, smooth curves. A cubic uniform B-spline is a piecewise collection of cubic Bezier curves, connected end to end. A cubic B-spline is C^2 continuous, meaning there is no discontinuities in curvature. B-splines have local control : parameters of a B-spline only affect a small part of the entire spline. A B-spline is qualified as open when it passes through its first and last control points.

Definition at line 40 of file GlOpenUniformCubicBSpline.h.

## ◆ GlOpenUniformCubicBSpline() [1/2]

 tlp::GlOpenUniformCubicBSpline::GlOpenUniformCubicBSpline ( )

Constructor.

Warning
Don't use it, see other construstor

## ◆ GlOpenUniformCubicBSpline() [2/2]

 tlp::GlOpenUniformCubicBSpline::GlOpenUniformCubicBSpline ( const std::vector< Coord > & controlPoints, const Color & startColor, const Color & endColor, const float startSize, const float endSize, const unsigned int nbCurvePoints = `200` )

GlOpenUniformCubicBSpline constructor.

Parameters
 controlPoints a vector of control points (size must be greater or equal to 4) startColor the color at the start of the curve endColor the color at the end of the curve startSize the width at the start of the curve endSize the width at the end of the curve nbCurvePoints the number of curve points to generate