Module java.desktop

Package java.awt.geom

Class QuadCurve2D.Double

java.lang.Object

java.awt.geom.QuadCurve2D

java.awt.geom.QuadCurve2D.Double

All Implemented Interfaces:

Shape, Serializable, Cloneable

Enclosing class:

QuadCurve2D

public static class QuadCurve2D.Double
extends QuadCurve2D
implements Serializable

A quadratic parametric curve segment specified with double coordinates.

Since:

1.2

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces declared in class java.awt.geom.QuadCurve2D

QuadCurve2D.Double, QuadCurve2D.Float

Field Summary

Fields

Modifier and Type	Field	Description
double	ctrlx	The X coordinate of the control point of the quadratic curve segment.
double	ctrly	The Y coordinate of the control point of the quadratic curve segment.
double	x1	The X coordinate of the start point of the quadratic curve segment.
double	x2	The X coordinate of the end point of the quadratic curve segment.
double	y1	The Y coordinate of the start point of the quadratic curve segment.
double	y2	The Y coordinate of the end point of the quadratic curve segment.

Constructor Summary

Constructors

Constructor	Description
Double()	Constructs and initializes a QuadCurve2D with coordinates (0, 0, 0, 0, 0, 0).
Double(double x1, double y1, double ctrlx, double ctrly, double x2, double y2)	Constructs and initializes a QuadCurve2D from the specified double coordinates.

Method Summary

Modifier and Type	Method	Description
Rectangle2D	getBounds2D()	Returns a high precision and more accurate bounding box of the Shape than the getBounds method.
Point2D	getCtrlPt()	Returns the control point.
double	getCtrlX()	Returns the X coordinate of the control point in double precision.
double	getCtrlY()	Returns the Y coordinate of the control point in double precision.
Point2D	getP1()	Returns the start point.
Point2D	getP2()	Returns the end point.
double	getX1()	Returns the X coordinate of the start point in double in precision.
double	getX2()	Returns the X coordinate of the end point in double precision.
double	getY1()	Returns the Y coordinate of the start point in double precision.
double	getY2()	Returns the Y coordinate of the end point in double precision.
void	setCurve(double x1, double y1, double ctrlx, double ctrly, double x2, double y2)	Sets the location of the end points and control point of this curve to the specified double coordinates.

Methods declared in class java.awt.geom.QuadCurve2D

clone, contains, contains, contains, contains, getBounds, getFlatness, getFlatness, getFlatness, getFlatnessSq, getFlatnessSq, getFlatnessSq, getPathIterator, getPathIterator, intersects, intersects, setCurve, setCurve, setCurve, setCurve, solveQuadratic, solveQuadratic, subdivide, subdivide, subdivide

Methods declared in class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

x1

public double x1

The X coordinate of the start point of the quadratic curve segment.

Since:

1.2

y1

public double y1

The Y coordinate of the start point of the quadratic curve segment.

Since:

1.2

ctrlx

public double ctrlx

The X coordinate of the control point of the quadratic curve segment.

Since:

1.2

ctrly

public double ctrly

The Y coordinate of the control point of the quadratic curve segment.

Since:

1.2

x2

public double x2

The X coordinate of the end point of the quadratic curve segment.

Since:

1.2

y2

public double y2

The Y coordinate of the end point of the quadratic curve segment.

Since:

1.2

Constructor Detail

Double

public Double()

Constructs and initializes a QuadCurve2D with coordinates (0, 0, 0, 0, 0, 0).

Since:

1.2

Double

public Double(double x1,
              double y1,
              double ctrlx,
              double ctrly,
              double x2,
              double y2)

Constructs and initializes a QuadCurve2D from the specified double coordinates.

Parameters:

x1 - the X coordinate of the start point

y1 - the Y coordinate of the start point

ctrlx - the X coordinate of the control point

ctrly - the Y coordinate of the control point

x2 - the X coordinate of the end point

y2 - the Y coordinate of the end point

Since:

1.2

Method Detail

getX1

public double getX1()

Returns the X coordinate of the start point in double in precision.

Specified by:

getX1 in class QuadCurve2D

Returns:

the X coordinate of the start point.

Since:

1.2

getY1

public double getY1()

Returns the Y coordinate of the start point in double precision.

Specified by:

getY1 in class QuadCurve2D

Returns:

the Y coordinate of the start point.

Since:

1.2

getP1

public Point2D getP1()

Returns the start point.

Specified by:

getP1 in class QuadCurve2D

Returns:

a Point2D that is the start point of this QuadCurve2D.

Since:

1.2

getCtrlX

public double getCtrlX()

Returns the X coordinate of the control point in double precision.

Specified by:

getCtrlX in class QuadCurve2D

Returns:

X coordinate the control point

Since:

1.2

getCtrlY

public double getCtrlY()

Returns the Y coordinate of the control point in double precision.

Specified by:

getCtrlY in class QuadCurve2D

Returns:

the Y coordinate of the control point.

Since:

1.2

getCtrlPt

public Point2D getCtrlPt()

Returns the control point.

Specified by:

getCtrlPt in class QuadCurve2D

Returns:

a Point2D that is the control point of this Point2D.

Since:

1.2

getX2

public double getX2()

Returns the X coordinate of the end point in double precision.

Specified by:

getX2 in class QuadCurve2D

Returns:

the x coordinate of the end point.

Since:

1.2

getY2

public double getY2()

Returns the Y coordinate of the end point in double precision.

Specified by:

getY2 in class QuadCurve2D

Returns:

the Y coordinate of the end point.

Since:

1.2

getP2

public Point2D getP2()

Returns the end point.

Specified by:

getP2 in class QuadCurve2D

Returns:

a Point object that is the end point of this Point2D.

Since:

1.2

setCurve

public void setCurve(double x1,
                     double y1,
                     double ctrlx,
                     double ctrly,
                     double x2,
                     double y2)

Sets the location of the end points and control point of this curve to the specified double coordinates.

Specified by:

setCurve in class QuadCurve2D

Parameters:

x1 - the X coordinate of the start point

y1 - the Y coordinate of the start point

ctrlx - the X coordinate of the control point

ctrly - the Y coordinate of the control point

x2 - the X coordinate of the end point

y2 - the Y coordinate of the end point

Since:

1.2

getBounds2D

public Rectangle2D getBounds2D()

Returns a high precision and more accurate bounding box of the Shape than the getBounds method. Note that there is no guarantee that the returned Rectangle2D is the smallest bounding box that encloses the Shape, only that the Shape lies entirely within the indicated Rectangle2D. The bounding box returned by this method is usually tighter than that returned by the getBounds method and never fails due to overflow problems since the return value can be an instance of the Rectangle2D that uses double precision values to store the dimensions.

Note that the definition of insideness can lead to situations where points on the defining outline of the shape may not be considered contained in the returned bounds object, but only in cases where those points are also not considered contained in the original shape.

If a point is inside the shape according to the contains(point) method, then it must be inside the returned Rectangle2D bounds object according to the contains(point) method of the bounds. Specifically:

shape.contains(p) requires bounds.contains(p)

If a point is not inside the shape, then it might still be contained in the bounds object:

bounds.contains(p) does not imply shape.contains(p)

Specified by:

getBounds2D in interface Shape

Returns:

an instance of Rectangle2D that is a high-precision bounding box of the Shape.

Since:

1.2

See Also:

Shape.getBounds()