Bezier3D Class Reference

Represents a bezier curve, represented by control points. More...

#include <Bezier3D.h>

Inheritance diagram for Bezier3D:

Public Member Functions
	Bezier3D ()=default
	Bezier3D (ParametricLine *par, QVector< QgsPoint * > *controlpoly)
	Constructor, par is a pointer to the parent, controlpoly a controlpolygon.
void	add (ParametricLine *pl) override
	Do not use this method, since a Bezier curve does not consist of other curves.
void	calcFirstDer (float t, Vector3D *v) override
	Calculates the first derivative and assigns it to v.
void	calcPoint (float t, QgsPoint *p) override
	Calculates the point on the curve and assigns it to p.
void	calcSecDer (float t, Vector3D *v) override
	Calculates the second derivative and assigns it to v.
void	changeDirection () override
	Changes the order of control points.
const QgsPoint *	getControlPoint (int number) const override
	Returns a control point.
const QVector< QgsPoint * > *	getControlPoly () const override
	Returns a pointer to the control polygon.
int	getDegree () const override
	Returns the degree of the curve.
ParametricLine *	getParent () const override
	Returns the parent.
void	remove (int i) override
	Do not use this method, since a Bezier curve does not consist of other curves.
void	setControlPoly (QVector< QgsPoint * > *cp) override
	Sets the control polygon.
void	setParent (ParametricLine *par) override
	Sets the parent.
Public Member Functions inherited from ParametricLine
	ParametricLine ()=default
	ParametricLine (ParametricLine *par, QVector< QgsPoint * > *controlpoly)
	Constructor, par is a pointer to the parent object, controlpoly the controlpolygon.
virtual	~ParametricLine ()=default

Additional Inherited Members
Protected Attributes inherited from ParametricLine
QVector< QgsPoint * > *	mControlPoly = nullptr
	MControlPoly stores the points of the control polygon.
int	mDegree = 0
	Degree of the parametric Line.
ParametricLine *	mParent = nullptr
	Pointer to the parent object. If there isn't one, mParent is 0.

Detailed Description

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 33 of file Bezier3D.h.

Constructor & Destructor Documentation

Bezier3D() [1/2]

Bezier3D::Bezier3D ( )

default

Bezier3D() [2/2]

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

inline

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

Definition at line 74 of file Bezier3D.h.

Member Function Documentation

add()

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.

calcFirstDer()

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.

calcPoint()

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.

calcSecDer()

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

overridevirtual

Calculates the second derivative and assigns it to v.

Implements ParametricLine.

Definition at line 76 of file Bezier3D.cpp.

changeDirection()

void Bezier3D::changeDirection ( )

overridevirtual

Changes the order of control points.

Implements ParametricLine.

Definition at line 109 of file Bezier3D.cpp.

getControlPoint()

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

inlineoverridevirtual

Returns a control point.

Implements ParametricLine.

Definition at line 96 of file Bezier3D.h.

getControlPoly()

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

inlineoverridevirtual

Returns a pointer to the control polygon.

Implements ParametricLine.

Definition at line 101 of file Bezier3D.h.

getDegree()

int Bezier3D::getDegree ( ) const

inlineoverridevirtual

Returns the degree of the curve.

Implements ParametricLine.

Definition at line 106 of file Bezier3D.h.

getParent()

ParametricLine * Bezier3D::getParent ( ) const

inlineoverridevirtual

Returns the parent.

Implements ParametricLine.

Definition at line 111 of file Bezier3D.h.

remove()

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.

setControlPoly()

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

inlineoverridevirtual

Sets the control polygon.

Implements ParametricLine.

Definition at line 121 of file Bezier3D.h.

setParent()

void Bezier3D::setParent ( ParametricLine *  par )

inlineoverridevirtual

Sets the parent.

Implements ParametricLine.

Definition at line 116 of file Bezier3D.h.

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

• /build/qgis-3.99.0+git20250718+f78f5286a64+99sid/src/analysis/interpolation/Bezier3D.h
• /build/qgis-3.99.0+git20250718+f78f5286a64+99sid/src/analysis/interpolation/Bezier3D.cpp