public abstract class RectangularShape extends Object implements Shape, Cloneable
RectangularShape
is the base class for a number of
Shape
objects whose geometry is defined by a rectangular frame.
This class does not directly specify any specific geometry by
itself, but merely provides manipulation methods inherited by
a whole category of Shape
objects.
The manipulation methods provided by this class can be used to
query and modify the rectangular frame, which provides a reference
for the subclasses to define their geometry.Modifier  Constructor and Description 

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

Modifier and Type  Method and Description 

Object 
clone()
Creates a new object of the same class and with the same
contents as this object.

boolean 
contains(Point2D p)
Tests if a specified
Point2D is inside the boundary
of the Shape , as described by the
definition of insideness. 
boolean 
contains(Rectangle2D r)
Tests if the interior of the
Shape entirely contains the
specified Rectangle2D . 
Rectangle 
getBounds()
Returns an integer
Rectangle that completely encloses the
Shape . 
double 
getCenterX()
Returns the X coordinate of the center of the framing
rectangle of the
Shape in double
precision. 
double 
getCenterY()
Returns the Y coordinate of the center of the framing
rectangle of the
Shape in double
precision. 
Rectangle2D 
getFrame()
Returns the framing
Rectangle2D
that defines the overall shape of this object. 
abstract double 
getHeight()
Returns the height of the framing rectangle
in
double precision. 
double 
getMaxX()
Returns the largest X coordinate of the framing
rectangle of the
Shape in double
precision. 
double 
getMaxY()
Returns the largest Y coordinate of the framing
rectangle of the
Shape in double
precision. 
double 
getMinX()
Returns the smallest X coordinate of the framing
rectangle of the
Shape in double
precision. 
double 
getMinY()
Returns the smallest Y coordinate of the framing
rectangle of the
Shape in double
precision. 
PathIterator 
getPathIterator(AffineTransform at,
double flatness)
Returns an iterator object that iterates along the
Shape object's boundary and provides access to a
flattened view of the outline of the Shape
object's geometry. 
abstract double 
getWidth()
Returns the width of the framing rectangle in
double precision. 
abstract double 
getX()
Returns the X coordinate of the upperleft corner of
the framing rectangle in
double precision. 
abstract double 
getY()
Returns the Y coordinate of the upperleft corner of
the framing rectangle in
double precision. 
boolean 
intersects(Rectangle2D r)
Tests if the interior of the
Shape intersects the
interior of a specified Rectangle2D . 
abstract boolean 
isEmpty()
Determines whether the
RectangularShape is empty. 
abstract void 
setFrame(double x,
double y,
double w,
double h)
Sets the location and size of the framing rectangle of this
Shape to the specified rectangular values. 
void 
setFrame(Point2D loc,
Dimension2D size)
Sets the location and size of the framing rectangle of this
Shape to the specified Point2D and
Dimension2D , respectively. 
void 
setFrame(Rectangle2D r)
Sets the framing rectangle of this
Shape to
be the specified Rectangle2D . 
void 
setFrameFromCenter(double centerX,
double centerY,
double cornerX,
double cornerY)
Sets the framing rectangle of this
Shape
based on the specified center point coordinates and corner point
coordinates. 
void 
setFrameFromCenter(Point2D center,
Point2D corner)
Sets the framing rectangle of this
Shape based on a
specified center Point2D and corner
Point2D . 
void 
setFrameFromDiagonal(double x1,
double y1,
double x2,
double y2)
Sets the diagonal of the framing rectangle of this
Shape
based on the two specified coordinates. 
void 
setFrameFromDiagonal(Point2D p1,
Point2D p2)
Sets the diagonal of the framing rectangle of this
Shape
based on two specified Point2D objects. 
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
contains, contains, getBounds2D, getPathIterator, intersects
protected RectangularShape()
Arc2D
,
Ellipse2D
,
Rectangle2D
,
RoundRectangle2D
public abstract double getX()
double
precision.public abstract double getY()
double
precision.public abstract double getWidth()
double
precision.public abstract double getHeight()
double
precision.public double getMinX()
Shape
in double
precision.Shape
.public double getMinY()
Shape
in double
precision.Shape
.public double getMaxX()
Shape
in double
precision.Shape
.public double getMaxY()
Shape
in double
precision.Shape
.public double getCenterX()
Shape
in double
precision.Shape
.public double getCenterY()
Shape
in double
precision.Shape
.public Rectangle2D getFrame()
Rectangle2D
that defines the overall shape of this object.Rectangle2D
, specified in
double
coordinates.setFrame(double, double, double, double)
,
setFrame(Point2D, Dimension2D)
,
setFrame(Rectangle2D)
public abstract boolean isEmpty()
RectangularShape
is empty.
When the RectangularShape
is empty, it encloses no
area.true
if the RectangularShape
is empty;
false
otherwise.public abstract void setFrame(double x, double y, double w, double h)
Shape
to the specified rectangular values.x
 the X coordinate of the upperleft corner of the
specified rectangular shapey
 the Y coordinate of the upperleft corner of the
specified rectangular shapew
 the width of the specified rectangular shapeh
 the height of the specified rectangular shapegetFrame()
public void setFrame(Point2D loc, Dimension2D size)
Shape
to the specified Point2D
and
Dimension2D
, respectively. The framing rectangle is used
by the subclasses of RectangularShape
to define
their geometry.loc
 the specified Point2D
size
 the specified Dimension2D
getFrame()
public void setFrame(Rectangle2D r)
Shape
to
be the specified Rectangle2D
. The framing rectangle is
used by the subclasses of RectangularShape
to define
their geometry.r
 the specified Rectangle2D
getFrame()
public void setFrameFromDiagonal(double x1, double y1, double x2, double y2)
Shape
based on the two specified coordinates. The framing rectangle is
used by the subclasses of RectangularShape
to define
their geometry.x1
 the X coordinate of the start point of the specified diagonaly1
 the Y coordinate of the start point of the specified diagonalx2
 the X coordinate of the end point of the specified diagonaly2
 the Y coordinate of the end point of the specified diagonalpublic void setFrameFromDiagonal(Point2D p1, Point2D p2)
Shape
based on two specified Point2D
objects. The framing
rectangle is used by the subclasses of RectangularShape
to define their geometry.p1
 the start Point2D
of the specified diagonalp2
 the end Point2D
of the specified diagonalpublic void setFrameFromCenter(double centerX, double centerY, double cornerX, double cornerY)
Shape
based on the specified center point coordinates and corner point
coordinates. The framing rectangle is used by the subclasses of
RectangularShape
to define their geometry.centerX
 the X coordinate of the specified center pointcenterY
 the Y coordinate of the specified center pointcornerX
 the X coordinate of the specified corner pointcornerY
 the Y coordinate of the specified corner pointpublic void setFrameFromCenter(Point2D center, Point2D corner)
Shape
based on a
specified center Point2D
and corner
Point2D
. The framing rectangle is used by the subclasses
of RectangularShape
to define their geometry.center
 the specified center Point2D
corner
 the specified corner Point2D
public boolean contains(Point2D p)
Point2D
is inside the boundary
of the Shape
, as described by the
definition of insideness.public boolean intersects(Rectangle2D r)
Shape
intersects the
interior of a specified Rectangle2D
.
The Shape.intersects()
method allows a Shape
implementation to conservatively return true
when:
Rectangle2D
and the
Shape
intersect, but
Shapes
this method might
return true
even though the Rectangle2D
does not
intersect the Shape
.
The Area
class performs
more accurate computations of geometric intersection than most
Shape
objects and therefore can be used if a more precise
answer is required.intersects
in interface Shape
r
 the specified Rectangle2D
true
if the interior of the Shape
and
the interior of the specified Rectangle2D
intersect, or are both highly likely to intersect and intersection
calculations would be too expensive to perform; false
otherwise.Shape.intersects(double, double, double, double)
public boolean contains(Rectangle2D r)
Shape
entirely contains the
specified Rectangle2D
.
The Shape.contains()
method allows a Shape
implementation to conservatively return false
when:
intersect
method returns true
and
Shape
entirely contains the Rectangle2D
are prohibitively expensive.
Shapes
this method might
return false
even though the Shape
contains
the Rectangle2D
.
The Area
class performs
more accurate geometric computations than most
Shape
objects and therefore can be used if a more precise
answer is required.contains
in interface Shape
r
 The specified Rectangle2D
true
if the interior of the Shape
entirely contains the Rectangle2D
;
false
otherwise or, if the Shape
contains the Rectangle2D
and the
intersects
method returns true
and the containment calculations would be too expensive to
perform.Shape.contains(double, double, double, double)
public Rectangle getBounds()
Rectangle
that completely encloses the
Shape
. Note that there is no guarantee that the
returned Rectangle
is the smallest bounding box that
encloses the Shape
, only that the Shape
lies entirely within the indicated Rectangle
. The
returned Rectangle
might also fail to completely
enclose the Shape
if the Shape
overflows
the limited range of the integer data type. The
getBounds2D
method generally returns a
tighter bounding box due to its greater flexibility in
representation.
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 Rectangle
bounds object
according to the contains(point)
method of the bounds
. Specifically:
shape.contains(x,y)
requires bounds.contains(x,y)
If a point
is not inside the shape
, then it might
still be contained in the bounds
object:
bounds.contains(x,y)
does not imply shape.contains(x,y)
getBounds
in interface Shape
Rectangle
that completely encloses
the Shape
.Shape.getBounds2D()
public PathIterator getPathIterator(AffineTransform at, double flatness)
Shape
object's boundary and provides access to a
flattened view of the outline of the Shape
object's geometry.
Only SEG_MOVETO, SEG_LINETO, and SEG_CLOSE point types will be returned by the iterator.
The amount of subdivision of the curved segments is controlled
by the flatness
parameter, which specifies the
maximum distance that any point on the unflattened transformed
curve can deviate from the returned flattened path segments.
An optional AffineTransform
can
be specified so that the coordinates returned in the iteration are
transformed accordingly.
getPathIterator
in interface Shape
at
 an optional AffineTransform
to be applied to the
coordinates as they are returned in the iteration,
or null
if untransformed coordinates are desired.flatness
 the maximum distance that the line segments used to
approximate the curved segments are allowed to deviate
from any point on the original curvePathIterator
object that provides access to
the Shape
object's flattened geometry.public Object clone()
clone
in class Object
OutOfMemoryError
 if there is not enough memory.Cloneable
Submit a bug or feature
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developertargeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
Copyright © 1993, 2018, Oracle and/or its affiliates. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.