Luciad.Geometries.BezierCurve Class Reference

Represents a quadratic or cubic BezierCurve. More...

Inheritance diagram for Luciad.Geometries.BezierCurve:

Public Member Functions
Luciad.Cartesian.Coordinate	GetControlPoint (uint index)
	Retrieves the control point at the given index. More...
Luciad.Geometries.BezierCurve	MoveControlPoint (Luciad.Cartesian.Coordinate newLocation, uint index)
	Moves the control point at the given index to a new location. More...
Luciad.Geometries.BezierCurve	MoveEndPoint (Luciad.Cartesian.Coordinate newLocation)
	Returns a copy of the Bézier curve with a moved end point. More...
Luciad.Geometries.BezierCurve	MoveStartPoint (Luciad.Cartesian.Coordinate newLocation)
	Returns a copy of the Bézier curve with a moved start point. More...
Public Member Functions inherited from Luciad.Geometries.Curve
virtual Luciad.Cartesian.Coordinate	ComputePoint (double parameter)
	Computes a point of the curve, defined by the given parameter. More...
Public Member Functions inherited from Luciad.Geometries.Geometry
void	Dispose ()

Properties
uint	ControlPointCount [get]
	The amount of control points defining the Bézier curve. More...
Luciad.Cartesian.Coordinate	EndPoint [get]
	The end point (third control point) of the quadratic Bézier curve. More...
Luciad.Cartesian.Coordinate	StartPoint [get]
	The start point (first control point) of the quadratic Bézier curve. More...
Properties inherited from Luciad.Geometries.Curve
double	Length2D [get]
	The length of the curve. More...
Properties inherited from Luciad.Geometries.Geometry
Luciad.Geometries.Bounds	Bounds [get]
	The bounds for the geometry object. More...
Luciad.Geodesy.CoordinateReference	Reference [get]
	The coordinate reference of the geometry. More...

Detailed Description

Represents a quadratic or cubic BezierCurve.

A Bézier curve is defined by 3 or 4 control points:

• the start point
• one control point for a quadratic curve, or two control points for a cubic curve
• the end point

See also

GeometryFactory.CreateQuadraticBezierCurve

GeometryFactory.CreateCubicBezierCurve

Member Function Documentation

GetControlPoint()

Luciad.Cartesian.Coordinate Luciad.Geometries.BezierCurve.GetControlPoint ( uint  index )

inline

Retrieves the control point at the given index.

The available indices depends on the degree of the Bézier curve.

• Quadratic Bézier curve (degree 2 => 3 control points):
  • 0 => start control point
  • 1 => intermediate control point
  • 2 => end control point
• Cubic Bézier curve (degree 3 => 4 control points):
  • 0 => start control point
  • 1 or 2 => intermediate control points
  • 3 => end control point

Using indices out of this range will result in an exception.

Bézier curves with a higher degree are currently not supported.

Parameters

index

the index of the control point

Returns

a copy of the Bézier curve with a moved control point.

Exceptions

System.ArgumentException

when the index of the control point is out of range (i.e. larger than 2 or 3, depending on the degree of the Bézier curve)

Since

2024.1

MoveControlPoint()

Luciad.Geometries.BezierCurve Luciad.Geometries.BezierCurve.MoveControlPoint ( Luciad.Cartesian.Coordinate  newLocation, uint  index  )

inline

Moves the control point at the given index to a new location.

The available indices depends on the degree of the Bézier curve.

• Quadratic Bézier curve (degree 2 => 3 control points):
  • 0 => start control point
  • 1 => intermediate control point
  • 2 => end control point
• Cubic Bézier curve (degree 3 => 4 control points):
  • 0 => start control point
  • 1 or 2 => intermediate control points
  • 3 => end control point

Using indices out of this range will result in an exception.

Bézier curves with a higher degree are currently not supported.

Parameters

newLocation	the new location of the control point.
index	the index of the control point

Returns

a copy of the Bézier curve with a moved control point.

Exceptions

System.ArgumentException

when the index of the control point is out of range (i.e. larger than 2 or 3, depending on the degree of the Bézier curve)

Since

2024.1

MoveEndPoint()

Luciad.Geometries.BezierCurve Luciad.Geometries.BezierCurve.MoveEndPoint ( Luciad.Cartesian.Coordinate  newLocation )

inline

Returns a copy of the Bézier curve with a moved end point.

Parameters

newLocation

the new location of the point.

Returns

a copy of the Bézier curve with a moved end point.

MoveStartPoint()

Luciad.Geometries.BezierCurve Luciad.Geometries.BezierCurve.MoveStartPoint ( Luciad.Cartesian.Coordinate  newLocation )

inline

Returns a copy of the Bézier curve with a moved start point.

Parameters

newLocation

the new location of the point.

Returns

a copy of the Bézier curve with a moved start point.

Property Documentation

ControlPointCount

uint Luciad.Geometries.BezierCurve.ControlPointCount

get

The amount of control points defining the Bézier curve.

[get]

Returns the amount of control points defining the Bézier curve.

• For a quadratic curve, it returns 3.
• For a cubic curve, it returns 4.

Since

2024.1 [get]

EndPoint

Luciad.Cartesian.Coordinate Luciad.Geometries.BezierCurve.EndPoint

get

The end point (third control point) of the quadratic Bézier curve.

[get]

Returns the end point (third control point) of the quadratic Bézier curve.

StartPoint

Luciad.Cartesian.Coordinate Luciad.Geometries.BezierCurve.StartPoint

get

The start point (first control point) of the quadratic Bézier curve.

[get]

Returns the start point (first control point) of the quadratic Bézier curve.