tlp::GlCatmullRomCurve Class Reference

#include <GlCatmullRomCurve.h>

Inherits AbstractGlCurve.

Public Member Functions
	GlCatmullRomCurve (const std::vector< Coord > &controlPoints, const Color &startColor, const Color &endColor, const float startSize, const float endSize, const bool closedCurve=false, const unsigned int nbCurvePoints=200, const ParameterizationType paramType=CENTRIPETAL)
void	drawCurve (std::vector< Coord > &controlPoints, const Color &startColor, const Color &endColor, const float startSize, const float endSize, const unsigned int nbCurvePoints=200)
void	setClosedCurve (const bool closedCurve)
void	setParameterizationType (const ParameterizationType paramType)

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

Detailed Description

A class to draw a Catmull-Rom curve.

This class allow to draw a Catmull-Rom curve, a smooth curve which passes through all its control points. Catmull-Rom splines are a family of cubic interpolating splines formulated such that the tangent at each control point is calculated using the previous and next control point point of the spline. Catmull-Rom splines have C^1 continuity, local control, and interpolation, but do not lie within the convex hull of their control points.

Definition at line 42 of file GlCatmullRomCurve.h.

Constructor & Destructor Documentation

tlp::GlCatmullRomCurve::GlCatmullRomCurve	(	const std::vector< Coord > &	controlPoints,
		const Color &	startColor,
		const Color &	endColor,
		const float	startSize,
		const float	endSize,
		const bool	closedCurve = false,
		const unsigned int	nbCurvePoints = 200,
		const ParameterizationType	paramType = CENTRIPETAL
	)

GlCatmullRomCurve 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
closedCurve	if true, the curve will be closed and a bezier segment will be drawn between the last and first control point
paramType	curve parameterization type (GlCatmullRomCurve::UNIFORM | GlCatmullRomCurve::CENTRIPETAL | GlCatmullRomCurve::CHORD_LENGTH (default))
nbCurvePoints	the number of curve points to generate