tlp::GlOpenUniformCubicBSpline Class Reference

A class to draw open uniform cubic B-splines. More...

#include <GlOpenUniformCubicBSpline.h>

Inheritance diagram for tlp::GlOpenUniformCubicBSpline:

Collaboration diagram for tlp::GlOpenUniformCubicBSpline:

List of all members.

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

Protected Member Functions

• void setCurveVertexShaderRenderingSpecificParameters ()
• Coord computeCurvePointOnCPU (const std::vector< Coord > &controlPoints, float t)
• void computeCurvePointsOnCPU (const std::vector< Coord > &controlPoints, std::vector< Coord > &curvePoints, unsigned int nbCurvePoints)

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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 Bézier 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.

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Constructor & Destructor Documentation

tlp::GlOpenUniformCubicBSpline::GlOpenUniformCubicBSpline

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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

tlp::GlOpenUniformCubicBSpline::~GlOpenUniformCubicBSpline

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Member Function Documentation

Coord tlp::GlOpenUniformCubicBSpline::computeCurvePointOnCPU	(	const std::vector< Coord > &	controlPoints,
		float	t
	)		[protected, virtual]

Implements tlp::AbstractGlCurve.

void tlp::GlOpenUniformCubicBSpline::computeCurvePointsOnCPU	(	const std::vector< Coord > &	controlPoints,
		std::vector< Coord > &	curvePoints,
		unsigned int	nbCurvePoints
	)		[protected, virtual]

Implements tlp::AbstractGlCurve.

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

Reimplemented from tlp::AbstractGlCurve.

void tlp::GlOpenUniformCubicBSpline::setCurveVertexShaderRenderingSpecificParameters

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)

[protected, virtual]

Reimplemented from tlp::AbstractGlCurve.