QGIS API Documentation: Bezier3D Class Reference

QGIS API Documentation 3.4.15-Madeira (e83d02e274)

Class Bezier3D represents a bezier curve, represented by control points. More...

#include <Bezier3D.h>

Inheritance diagram for Bezier3D:

Inheritance graph

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Public Member Functions
	Bezier3D ()=default
	Default constructor. More...

	Bezier3D (ParametricLine par, QVector< QgsPoint > *controlpoly)
	Constructor, par is a pointer to the parent, controlpoly a controlpolygon. More...

void	add (ParametricLine *pl) override
	Do not use this method, since a Bezier curve does not consist of other curves. More...

void	calcFirstDer (float t, Vector3D *v) override
	Calculates the first derivative and assigns it to v. More...

void	calcPoint (float t, QgsPoint *p) override
	Calculates the point on the curve and assigns it to p. More...

void	calcSecDer (float t, Vector3D *v) override
	Calculates the second derivative and assigns it to v. More...

void	changeDirection () override
	Changes the order of control points. More...

const QgsPoint *	getControlPoint (int number) const override
	Returns a control point. More...

const QVector< QgsPoint * > *	getControlPoly () const override
	Returns a pointer to the control polygon. More...

int	getDegree () const override
	Returns the degree of the curve. More...

ParametricLine *	getParent () const override
	Returns the parent. More...

void	remove (int i) override
	Do not use this method, since a Bezier curve does not consist of other curves. More...

void	setControlPoly (QVector< QgsPoint * > *cp) override
	Sets the control polygon. More...

void	setParent (ParametricLine *par) override
	Sets the parent. More...

Public Member Functions inherited from ParametricLine
	ParametricLine ()=default
	Default constructor. More...

	ParametricLine (ParametricLine par, QVector< QgsPoint > *controlpoly)
	Constructor, par is a pointer to the parent object, controlpoly the controlpolygon. More...

virtual	~ParametricLine ()=default

Additional Inherited Members
Protected Attributes inherited from ParametricLine
QVector< QgsPoint * > *	mControlPoly = nullptr
	MControlPoly stores the points of the control polygon. More...

int	mDegree = 0
	Degree of the parametric Line. More...

ParametricLine *	mParent = nullptr
	Pointer to the parent object. If there isn't one, mParent is 0. More...

Detailed Description

Class Bezier3D represents a bezier curve, represented by control points.

Parameter t is running from 0 to 1. The class is capable to calculate the curve point and the first two derivatives belonging to it.

Note: Not available in Python bindings

Definition at line 31 of file Bezier3D.h.

Constructor & Destructor Documentation

Bezier3D::Bezier3D ( )

default

Default constructor.

Bezier3D::Bezier3D	(	ParametricLine *	par,
		QVector< QgsPoint * > *	controlpoly
	)

inline

Constructor, par is a pointer to the parent, controlpoly a controlpolygon.

Definition at line 75 of file Bezier3D.h.

Member Function Documentation

void Bezier3D::add ( ParametricLine * pl )

inlineoverridevirtual

Do not use this method, since a Bezier curve does not consist of other curves.

Implements ParametricLine.

Definition at line 82 of file Bezier3D.h.

void Bezier3D::calcFirstDer	(	float	t,
		Vector3D *	v
	)

overridevirtual

Calculates the first derivative and assigns it to v.

Implements ParametricLine.

Definition at line 22 of file Bezier3D.cpp.

void Bezier3D::calcPoint	(	float	t,
		QgsPoint *	p
	)

overridevirtual

Calculates the point on the curve and assigns it to p.

Implements ParametricLine.

Definition at line 53 of file Bezier3D.cpp.

void Bezier3D::calcSecDer	(	float	t,
		Vector3D *	v
	)

overridevirtual

Calculates the second derivative and assigns it to v.

Implements ParametricLine.

Definition at line 77 of file Bezier3D.cpp.

void Bezier3D::changeDirection ( )

overridevirtual

Changes the order of control points.

Implements ParametricLine.

Definition at line 110 of file Bezier3D.cpp.

const QgsPoint * Bezier3D::getControlPoint ( int number ) const

inlineoverridevirtual

Returns a control point.

Implements ParametricLine.

Definition at line 96 of file Bezier3D.h.

const QVector< QgsPoint * > * Bezier3D::getControlPoly ( ) const

inlineoverridevirtual

Returns a pointer to the control polygon.

Implements ParametricLine.

Definition at line 101 of file Bezier3D.h.

int Bezier3D::getDegree ( ) const

inlineoverridevirtual

Returns the degree of the curve.

Implements ParametricLine.

Definition at line 106 of file Bezier3D.h.

ParametricLine * Bezier3D::getParent ( ) const

inlineoverridevirtual

Returns the parent.

Implements ParametricLine.

Definition at line 111 of file Bezier3D.h.

void Bezier3D::remove ( int i )

inlineoverridevirtual

Do not use this method, since a Bezier curve does not consist of other curves.

Implements ParametricLine.

Definition at line 88 of file Bezier3D.h.

void Bezier3D::setControlPoly ( QVector< QgsPoint * > * cp )

inlineoverridevirtual

Sets the control polygon.

Implements ParametricLine.

Definition at line 121 of file Bezier3D.h.

void Bezier3D::setParent ( ParametricLine * par )

inlineoverridevirtual

Sets the parent.

Implements ParametricLine.

Definition at line 116 of file Bezier3D.h.

The documentation for this class was generated from the following files:

/build/qgis-3.4.15+24xenial/src/analysis/interpolation/Bezier3D.h
/build/qgis-3.4.15+24xenial/src/analysis/interpolation/Bezier3D.cpp