java.awt.geom
Class RoundRectangle2D

java.lang.Object
  java.awt.geom.RectangularShape
      java.awt.geom.RoundRectangle2D

All Implemented Interfaces:

Cloneable, Shape

Direct Known Subclasses:

RoundRectangle2D.Double, RoundRectangle2D.Float

public abstract class RoundRectangle2D

extends RectangularShape

The RoundRectangle2D class defines a rectangle with rounded corners defined by a location (x, y), a dimension (w x h), and the width and height of an arc with which to round the corners.

This class is the abstract superclass for all objects that store a 2D rounded rectangle. The actual storage representation of the coordinates is left to the subclass.

Author:

Jim Graham

Nested Class Summary

static class	RoundRectangle2D.Double The Double class defines a rectangle with rounded corners all specified in double coordinates.
static class	RoundRectangle2D.Float The Float class defines a rectangle with rounded corners all specified in float coordinates.

Constructor Summary

protected

RoundRectangle2D() This is an abstract class that cannot be instantiated directly.

Method Summary

private int	classify(double coord, double left, double right, double arcsize)
boolean	contains(double x, double y) Tests if the specified coordinates are inside the boundary of this RoundRectangle2D.
boolean	contains(double x, double y, double w, double h) Tests if the interior of this RoundRectangle2D entirely contains the specified set of rectangular coordinates.
abstract double	getArcHeight() Gets the height of the arc that rounds off the corners.
abstract double	getArcWidth() Gets the width of the arc that rounds off the corners.
PathIterator	getPathIterator(AffineTransform at) Returns an iteration object that defines the boundary of this RoundRectangle2D.
boolean	intersects(double x, double y, double w, double h) Tests if the interior of this RoundRectangle2D intersects the interior of a specified set of rectangular coordinates.
void	setFrame(double x, double y, double w, double h) Sets the location and size of the outer bounds of this RoundRectangle2D to the specified rectangular values.
abstract void	setRoundRect(double x, double y, double w, double h, double arcWidth, double arcHeight) Sets the location, size, and corner radii of this RoundRectangle2D to the specified double values.
void	setRoundRect(RoundRectangle2D rr) Sets this RoundRectangle2D to be the same as the specified RoundRectangle2D.

Methods inherited from class java.awt.geom.RectangularShape

clone, contains, contains, getBounds, getCenterX, getCenterY, getFrame, getHeight, getMaxX, getMaxY, getMinX, getMinY, getPathIterator, getWidth, getX, getY, intersects, isEmpty, setFrame, setFrame, setFrameFromCenter, setFrameFromCenter, setFrameFromDiagonal, setFrameFromDiagonal

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.awt.Shape

getBounds2D

Constructor Detail

RoundRectangle2D

protected RoundRectangle2D()

This is an abstract class that cannot be instantiated directly. Type-specific implementation subclasses are available for instantiation and provide a number of formats for storing the information necessary to satisfy the various accessor methods below.

See Also:

RoundRectangle2D.Float, RoundRectangle2D.Double

Method Detail

getArcWidth

public abstract double getArcWidth()

Gets the width of the arc that rounds off the corners.

Returns:

the width of the arc that rounds off the corners of this RoundRectangle2D.

getArcHeight

public abstract double getArcHeight()

Gets the height of the arc that rounds off the corners.

Returns:

the height of the arc that rounds off the corners of this RoundRectangle2D.

setRoundRect

public abstract void setRoundRect(double x,
                                  double y,
                                  double w,
                                  double h,
                                  double arcWidth,
                                  double arcHeight)

Sets the location, size, and corner radii of this RoundRectangle2D to the specified double values.

Parameters:

w - the width to which to set this RoundRectangle2D

h - the height to which to set this RoundRectangle2D

arcWidth - the width to which to set the arc of this RoundRectangle2D

arcHeight - the height to which to set the arc of this RoundRectangle2D

setRoundRect

public void setRoundRect(RoundRectangle2D rr)

Sets this RoundRectangle2D to be the same as the specified RoundRectangle2D.

Parameters:

rr - the specified RoundRectangle2D

setFrame

public void setFrame(double x,
                     double y,
                     double w,
                     double h)

Sets the location and size of the outer bounds of this RoundRectangle2D to the specified rectangular values.

Specified by:

setFrame in class RectangularShape

Parameters:

w - the width to which to set this RoundRectangle2D

h - the height to which to set this RoundRectangle2D

See Also:

RectangularShape.getFrame()

contains

public boolean contains(double x,
                        double y)

Tests if the specified coordinates are inside the boundary of this RoundRectangle2D.

Parameters:

x - the specified x coordinate

y - the specified y coordinate

Returns:

true if the specified coordinates are inside the boundary of this RoundRectangle2D; false otherwise.

classify

private int classify(double coord,
                     double left,
                     double right,
                     double arcsize)

intersects

public boolean intersects(double x,
                          double y,
                          double w,
                          double h)

Tests if the interior of this RoundRectangle2D intersects the interior of a specified set of rectangular coordinates.

Parameters:

w - the width of the specified set of rectangular coordinates

h - the height of the specified set of rectangular coordinates

x - the x coordinate of the specified rectangular area

y - the y coordinate of the specified rectangular area

Returns:

true if the interior of this RoundRectangle2D intersects the interior of the specified set of rectangular coordinates.

See Also:

Area

contains

public boolean contains(double x,
                        double y,
                        double w,
                        double h)

Tests if the interior of this RoundRectangle2D entirely contains the specified set of rectangular coordinates.

Parameters:

w - the width of the specified set of rectangular coordinates

h - the height of the specified set of rectangular coordinates

x - the x coordinate of the specified rectangular area

y - the y coordinate of the specified rectangular area

Returns:

true if the interior of this RoundRectangle2D entirely contains the specified set of rectangular coordinates; false otherwise.

See Also:

Area, Shape.intersects(double, double, double, double)

getPathIterator

public PathIterator getPathIterator(AffineTransform at)

Returns an iteration object that defines the boundary of this RoundRectangle2D. The iterator for this class is multi-threaded safe, which means that this RoundRectangle2D class guarantees that modifications to the geometry of this RoundRectangle2D object do not affect any iterations of that geometry that are already in process.

Parameters:

at - an optional AffineTransform to be applied to the coordinates as they are returned in the iteration, or null if untransformed coordinates are desired

Returns:

the PathIterator object that returns the geometry of the outline of this RoundRectangle2D, one segment at a time.