Package org.eclipse.gef.geometry.planar

Class CubicCurve

java.lang.Object

org.eclipse.gef.geometry.planar.BezierCurve

org.eclipse.gef.geometry.planar.CubicCurve

All Implemented Interfaces:

Serializable, Cloneable, ICurve, IGeometry, IRotatable<BezierCurve>, IScalable<BezierCurve>, ITranslatable<BezierCurve>

public class CubicCurve
extends BezierCurve

An instance of the CubicCurve class represents a BezierCurve of degree 3, having a start and an end Point and two handle Points.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
CubicCurve(double... coordinates)	Constructs a new CubicCurve object with the given sequence of x and y coordinates of the start Point, the two handle Points, and the end Point.
CubicCurve(double x1, double y1, double ctrl1X, double ctrl1Y, double ctrl2X, double ctrl2Y, double x2, double y2)	Constructs a new CubicCurve object from the given control Point coordinates.
CubicCurve(Point... points)	Constructs a new CubicCurve from the given sequence of Points, which is expected to be in the order: start Point , first and second handle Points, and end Point.
CubicCurve(Point start, Point ctrl1, Point ctrl2, Point end)	Constructs a new CubicCurve object from the given control Points.

Method Summary

Modifier and Type	Method	Description
Object	clone()	Overridden with public visibility as recommended within Cloneable .
CubicCurve	getCopy()	Returns a new CubicCurve, which has the same control Points as this one.
Point	getCtrl1()	Returns the first handle Point.
Point	getCtrl2()	Returns the second handle Point.
double	getCtrlX1()	Returns the first handle Point's x coordinate.
double	getCtrlX2()	Returns the second handle Point's x coordinate.
double	getCtrlY1()	Returns the first handle Point's y coordinate.
double	getCtrlY2()	Returns the second handle Point's y coordinate.
CubicCurve	getTransformed(AffineTransform t)	Default implementation returning a transformed Path representation of this IGeometry.
final int	hashCode()
CubicCurve	setCtrl1(Point ctrl1)	Sets the first handle Point of this CubicCurve to the given Point.
CubicCurve	setCtrl1X(double ctrl1x)	Sets the x coordinate of the first handle Point of this CubicCurve to the given value.
CubicCurve	setCtrl1Y(double ctrl1y)	Sets the y coordinate of the first handle Point of this CubicCurve to the given value.
CubicCurve	setCtrl2(Point ctrl2)	Sets the second handle Point of this CubicCurve to the given Point.
CubicCurve	setCtrl2X(double ctrl2x)	Sets the x coordinate of the second handle Point of this CubicCurve to the given value.
CubicCurve	setCtrl2Y(double ctrl2y)	Sets the y coordinate of the second handle Point of this CubicCurve to the given value.
CubicCurve	setCurve(Point p1, Point ctrl1, Point ctrl2, Point p2)	Sets all control Points of this CubicCurve to the given Points.
CubicCurve[]	split(double t)	Subdivides this BezierCurve at the given parameter value t into two new BezierCurves.
Path	toPath()	Returns a Path approximating this BezierCurve using Line segments.
String	toString()
boolean	touches(IGeometry g)	Returns true if the input IGeometry touches this IGeometry, i.e. there is at least one common point.

Methods inherited from class org.eclipse.gef.geometry.planar.BezierCurve

contains, contains, equals, get, getBounds, getClipped, getControlBounds, getDerivative, getElevated, getIntersections, getIntersections, getOffset, getOverlap, getOverlaps, getP1, getP2, getParameterAt, getPoint, getPoints, getProjection, getRotatedCCW, getRotatedCCW, getRotatedCCW, getRotatedCW, getRotatedCW, getRotatedCW, getScaled, getScaled, getScaled, getScaled, getScaled, getScaled, getTranslated, getTranslated, getX1, getX2, getY1, getY2, intersects, overlaps, overlaps, rotateCCW, rotateCCW, rotateCCW, rotateCW, rotateCW, rotateCW, scale, scale, scale, scale, scale, scale, setP1, setP2, setPoint, toBezier, toCubic, toLine, toLineStrip, toLineStrip, toPoints, toQuadratic, translate, translate

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.eclipse.gef.geometry.planar.IGeometry

touches

Constructor Details

CubicCurve

public CubicCurve(double... coordinates)

Constructs a new CubicCurve object with the given sequence of x and y coordinates of the start Point, the two handle Points, and the end Point.

Parameters:

coordinates - the sequence of x and y coordinates specifying this CubicCurve's control Points

See Also:

• CubicCurve(double, double, double, double, double, double, double, double)

CubicCurve

public CubicCurve(double x1,
 double y1,
 double ctrl1X,
 double ctrl1Y,
 double ctrl2X,
 double ctrl2Y,
 double x2,
 double y2)

Constructs a new CubicCurve object from the given control Point coordinates.

Parameters:

x1 - the x coordinate of the start Point

y1 - the y coordinate of the start Point

ctrl1X - the x coordinate of the first handle Point

ctrl1Y - the y coordinate of the first handle Point

ctrl2X - the x coordinate of the second handle Point

ctrl2Y - the y coordinate of the second handle Point

x2 - the x coordinate of the end Point

y2 - the y coordinate of the end Point

CubicCurve

public CubicCurve(Point... points)

Constructs a new CubicCurve from the given sequence of Points, which is expected to be in the order: start Point , first and second handle Points, and end Point.

Parameters:

points - the sequence of Points from which this CubicCurve is constructed

See Also:

• CubicCurve(Point, Point, Point, Point)
• CubicCurve(double, double, double, double, double, double, double, double)

CubicCurve

public CubicCurve(Point start,
 Point ctrl1,
 Point ctrl2,
 Point end)

Constructs a new CubicCurve object from the given control Points.

Parameters:

start - the start Point

ctrl1 - the first handle Point

ctrl2 - the second handle Point

end - the end Point

See Also:

• CubicCurve(double, double, double, double, double, double, double, double)

Method Details

getCopy

public CubicCurve getCopy()

Returns a new CubicCurve, which has the same control Points as this one.

Specified by:

getCopy in interface IGeometry

Overrides:

getCopy in class BezierCurve

Returns:

a new CubicCurve with the same control Points as this one

getCtrl1

public Point getCtrl1()

Returns the first handle Point.

Returns:

the first handle Point

getCtrl2

public Point getCtrl2()

Returns the second handle Point.

Returns:

the second handle Point

getCtrlX1

public double getCtrlX1()

Returns the first handle Point's x coordinate.

Returns:

the first handle Point's x coordinate

getCtrlX2

public double getCtrlX2()

Returns the second handle Point's x coordinate.

Returns:

the second handle Point's x coordinate

getCtrlY1

public double getCtrlY1()

Returns the first handle Point's y coordinate.

Returns:

the first handle Point's y coordinate

getCtrlY2

public double getCtrlY2()

Returns the second handle Point's y coordinate.

Returns:

the second handle Point's y coordinate

getTransformed

public CubicCurve getTransformed(AffineTransform t)

Default implementation returning a transformed Path representation of this IGeometry. Subclasses may override this method to return a more specific representation.

Specified by:

getTransformed in interface IGeometry

Overrides:

getTransformed in class BezierCurve

Parameters:

t - The AffineTransform to be applied

Returns:

a transformed Path representation of this IGeometry

See Also:

• IGeometry.getTransformed(AffineTransform)

setCtrl1

public CubicCurve setCtrl1(Point ctrl1)

Sets the first handle Point of this CubicCurve to the given Point.

Parameters:

ctrl1 - the new first handle Point

Returns:

this for convenience

setCtrl1X

public CubicCurve setCtrl1X(double ctrl1x)

Sets the x coordinate of the first handle Point of this CubicCurve to the given value.

Parameters:

ctrl1x - the new x coordinate of the first handle Point of this CubicCurve

Returns:

this for convenience

setCtrl1Y

public CubicCurve setCtrl1Y(double ctrl1y)

Sets the y coordinate of the first handle Point of this CubicCurve to the given value.

Parameters:

ctrl1y - the new y coordinate of the first handle Point of this CubicCurve

Returns:

this for convenience

setCtrl2

public CubicCurve setCtrl2(Point ctrl2)

Sets the second handle Point of this CubicCurve to the given Point.

Parameters:

ctrl2 - the new second handle Point of this CubicCurve

Returns:

this for convenience

setCtrl2X

public CubicCurve setCtrl2X(double ctrl2x)

Sets the x coordinate of the second handle Point of this CubicCurve to the given value.

Parameters:

ctrl2x - the new x coordinate of the second handle Point of this CubicCurve

Returns:

this for convenience

setCtrl2Y

public CubicCurve setCtrl2Y(double ctrl2y)

Sets the y coordinate of the second handle Point of this CubicCurve to the given value.

Parameters:

ctrl2y - the new y coordinate of the second handle Point of this CubicCurve

Returns:

this for convenience

setCurve

public CubicCurve setCurve(Point p1,
 Point ctrl1,
 Point ctrl2,
 Point p2)

Sets all control Points of this CubicCurve to the given Points.

Parameters:

p1 - the new start Point

ctrl1 - the new first control Point

ctrl2 - the new second control Point

p2 - the new end Point

Returns:

this for convenience

split

public CubicCurve[] split(double t)

Description copied from class: BezierCurve

Subdivides this BezierCurve at the given parameter value t into two new BezierCurves. The first one is the BezierCurve over the parameter BezierCurve.Interval [0;t] and the second one is the BezierCurve over the parameter BezierCurve.Interval [t;1].

Overrides:

split in class BezierCurve

Parameters:

t - the parameter value at which this BezierCurve is subdivided

Returns:

an array of two BezierCurves, the left ( [0;t]) and the right ([t;1])

toPath

public Path toPath()

Description copied from class: BezierCurve

Returns a Path approximating this BezierCurve using Line segments.

Specified by:

toPath in interface IGeometry

Overrides:

toPath in class BezierCurve

Returns:

a Path approximating this BezierCurve using Line segments

toString

public String toString()

Overrides:

toString in class BezierCurve

clone

public Object clone()

Overridden with public visibility as recommended within Cloneable .

Overrides:

clone in class Object

hashCode

public final int hashCode()

Overrides:

hashCode in class Object

See Also:

• Object.hashCode()

touches

public boolean touches(IGeometry g)

Description copied from interface: IGeometry

Returns true if the input IGeometry touches this IGeometry, i.e. there is at least one common point.

Specified by:

touches in interface IGeometry

Parameters:

g - The IGeometry for the intersection test

Returns:

true if the input IGeometry and this IGeometry have at least one common point.