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Class att.grappa.DoubleRectangle
java.lang.Object
|
+----att.grappa.DoubleRectangle
- public class DoubleRectangle
- extends Object
- implements Shape, Serializable
An re-implementation of java.awt.Rectangle using doubles instead of ints.
- Version:
- 1.1, 30 Sep 1999; Copyright 1996 - 1999 by AT&T Corp.
- Author:
- John Mocenigo, Research @ AT&T Labs
-
height
- The height of the rectangle.
-
width
- The width of the rectangle.
-
x
- The x coordinate of the rectangle.
-
y
- The y coordinate of the rectangle.
-
DoubleRectangle()
- Constructs a new rectangle whose top-left corner is at (0, 0)
in the coordinate space, and whose width and height are zero.
-
DoubleRectangle(double, double)
- Constructs a new rectangle whose top-left corner is at (0, 0)
in the coordinate space, and whose width and height are specified
by the arguments of the same name.
-
DoubleRectangle(double, double, double, double)
- Constructs a new rectangle whose top-left corner is specified as
(
x, y) and whose width and height
are specified by the arguments of the same name.
-
DoubleRectangle(DoubleDimension)
- Constructs a new rectangle whose top left corner is
(0, 0) and whose width and height are specified
by the
dimension argument.
-
DoubleRectangle(DoublePoint)
- Constructs a new rectangle whose top-left corner is the
specified point, and whose width and height are zero.
-
DoubleRectangle(DoublePoint, DoubleDimension)
- Constructs a new rectangle whose top-left corner is specified
by the
point argument, and whose width and height
are specified by the dimension argument.
-
DoubleRectangle(DoubleRectangle)
- Constructs a new rectangle, initialized to match the values of
the specificed rectangle.
-
DoubleRectangle(Rectangle)
- Constructs a new rectangle, initialized to match the values of
the specificed (integer) rectangle.
-
add(double, double)
- Adds a point, specified by the arguments
newx
and newy, to this rectangle.
-
add(DoublePoint)
- Adds the point
pt to this rectangle.
-
add(DoubleRectangle)
- Adds a rectangle to this rectangle.
-
contains(double, double)
- Checks whether this rectangle contains the point
at the specified location (x, y).
-
contains(DoublePoint)
- Checks whether this rectangle contains the specified point.
-
equals(Object)
- Checks whether two rectangles are equal.
-
getApproximation()
- Gets the closest (using
Math.round()) Rectangle to this rectangle.
-
getBounds()
- Gets the bounding rectangle of this rectangle.
-
getLocation()
- Gets the location of this rectangle.
-
getSize()
- Gets the size (width and height) of this rectangle.
-
grow(double, double)
- Grows the rectangle both horizontally and vertically.
-
hashCode()
- Returns the hashcode for this rectangle.
-
intersection(DoubleRectangle)
- Computes the intersection of this rectangle with the
specified rectangle.
-
intersects(DoubleRectangle)
- Determines whether this rectangle and the specified rectangle
intersect.
-
isEmpty()
- Determines whether this rectangle is empty.
-
setBounds(double, double, double, double)
- Sets this rectangle to the specified
values for
x, y, width,
and height.
-
setBounds(DoubleRectangle)
- Sets this rectangle to match the specified rectangle.
-
setBounds(Rectangle)
- Sets the bounding rectangle of this rectangle to match
the specified rectangle.
-
setLocation(double, double)
- Moves the rectangle to the specified location.
-
setLocation(DoublePoint)
- Moves the rectangle to the specified location.
-
setSize(double, double)
- Sets the size of this rectangle to the specified width and height.
-
setSize(DoubleDimension)
- Sets the size of this rectangle to match the specified dimension.
-
toString()
- Returns a string representation of this rectangle
and its values.
-
translate(double, double)
- Translates the rectangle the indicated distance,
to the right along the x coordinate axis, and
downward along the y coordinate axis.
-
union(DoubleRectangle)
- Computes the union of this rectangle with the
specified rectangle.
x
public double x
- The x coordinate of the rectangle.
y
public double y
- The y coordinate of the rectangle.
width
public double width
- The width of the rectangle.
height
public double height
- The height of the rectangle.
DoubleRectangle
public DoubleRectangle()
- Constructs a new rectangle whose top-left corner is at (0, 0)
in the coordinate space, and whose width and height are zero.
DoubleRectangle
public DoubleRectangle(DoubleRectangle r)
- Constructs a new rectangle, initialized to match the values of
the specificed rectangle.
- Parameters:
- r - a DoubleRectangle from which to copy initial values.
DoubleRectangle
public DoubleRectangle(Rectangle r)
- Constructs a new rectangle, initialized to match the values of
the specificed (integer) rectangle.
- Parameters:
- r - a rectangle from which to copy initial values.
DoubleRectangle
public DoubleRectangle(double x,
double y,
double width,
double height)
- Constructs a new rectangle whose top-left corner is specified as
(
x, y) and whose width and height
are specified by the arguments of the same name.
- Parameters:
- x - the x coordinate.
- y - the y coordinate.
- width - the width of the rectangle.
- height - the height of the rectangle.
DoubleRectangle
public DoubleRectangle(double width,
double height)
- Constructs a new rectangle whose top-left corner is at (0, 0)
in the coordinate space, and whose width and height are specified
by the arguments of the same name.
- Parameters:
- width - the width of the rectangle.
- height - the height of the rectangle.
DoubleRectangle
public DoubleRectangle(DoublePoint p,
DoubleDimension d)
- Constructs a new rectangle whose top-left corner is specified
by the
point argument, and whose width and height
are specified by the dimension argument.
- Parameters:
- p - a DoublePoint, the top-left corner of the rectangle.
- d - a DoubleDimension, representing the width and height.
DoubleRectangle
public DoubleRectangle(DoublePoint p)
- Constructs a new rectangle whose top-left corner is the
specified point, and whose width and height are zero.
- Parameters:
- p - the top left corner of the rectangle.
DoubleRectangle
public DoubleRectangle(DoubleDimension d)
- Constructs a new rectangle whose top left corner is
(0, 0) and whose width and height are specified
by the
dimension argument.
- Parameters:
- d - a dimension, specifying width and height.
getApproximation
public Rectangle getApproximation()
- Gets the closest (using
Math.round()) Rectangle to this rectangle.
- Returns:
- a standard (integer) rectangle, that approximates this one
getBounds
public Rectangle getBounds()
- Gets the bounding rectangle of this rectangle.
This method is included for completeness, to parallel the
getBounds method of Component.
- Returns:
- a new rectangle, equal to the bounding rectangle
for this rectangle.
- See Also:
- getBounds
setBounds
public void setBounds(Rectangle r)
- Sets the bounding rectangle of this rectangle to match
the specified rectangle.
This method is included for completeness, to parallel the
setBounds method of Component.
- Parameters:
- r - a rectangle.
setBounds
public void setBounds(DoubleRectangle r)
- Sets this rectangle to match the specified rectangle.
- Parameters:
- r - a DoubleRectangle.
setBounds
public void setBounds(double x,
double y,
double width,
double height)
- Sets this rectangle to the specified
values for
x, y, width,
and height.
This method is included for completeness, to parallel the
setBounds method of Component.
- Parameters:
- x - the new x coordinate for the top-left
corner of this rectangle.
- y - the new y coordinate for the top-left
corner of this rectangle.
- width - the new width for this rectangle.
- height - the new height for this rectangle.
getLocation
public DoublePoint getLocation()
- Gets the location of this rectangle.
- Returns:
- the top-left point of this rectangle
setLocation
public void setLocation(DoublePoint p)
- Moves the rectangle to the specified location.
This method is included for completeness, to parallel the
setLocation method of Component.
- Parameters:
- p - the new location for the point.
setLocation
public void setLocation(double x,
double y)
- Moves the rectangle to the specified location.
This method is included for completeness, to parallel the
setLocation method of Component.
- Parameters:
- x - the x coordinate of the new location.
- y - the y coordinate of the new location.
- See Also:
- setLocation
translate
public void translate(double x,
double y)
- Translates the rectangle the indicated distance,
to the right along the x coordinate axis, and
downward along the y coordinate axis.
- Parameters:
- dx - the distance to move the rectangle
along the x axis.
- dy - the distance to move the rectangle
along the y axis.
getSize
public DoubleDimension getSize()
- Gets the size (width and height) of this rectangle.
This method is included for completeness, to parallel the
getSize method of Component.
- Returns:
- a DoubleDimension, representing the size.
setSize
public void setSize(DoubleDimension d)
- Sets the size of this rectangle to match the specified dimension.
- Parameters:
- d - the new size for the Dimension object
setSize
public void setSize(double width,
double height)
- Sets the size of this rectangle to the specified width and height.
- Parameters:
- width - the new width for this rectangle object.
- height - the new height for this rectangle object.
contains
public boolean contains(DoublePoint p)
- Checks whether this rectangle contains the specified point.
- Parameters:
- p - the point (location) to test.
- Returns:
-
true if the point
(x, y) is inside this rectangle;
false otherwise.
contains
public boolean contains(double x,
double y)
- Checks whether this rectangle contains the point
at the specified location (x, y).
- Parameters:
- x - the x coordinate.
- y - the y coordinate.
- Returns:
-
true if the point
(x, y) is inside this rectangle;
false otherwise.
intersects
public boolean intersects(DoubleRectangle r)
- Determines whether this rectangle and the specified rectangle
intersect. Two rectangles intersect if their intersection is
nonempty.
- Parameters:
- r - a DoubleRectangle.
- Returns:
-
true if the specified rectangle
and this rectangle insersect;
false otherwise.
intersection
public DoubleRectangle intersection(DoubleRectangle r)
- Computes the intersection of this rectangle with the
specified rectangle. Returns a new rectangle that
represents the intersection of the two rectangles.
- Parameters:
- r - a DoubleRectangle.
- Returns:
- the largest rectangle contained in both the
specified rectangle and in this rectangle.
union
public DoubleRectangle union(DoubleRectangle r)
- Computes the union of this rectangle with the
specified rectangle. Returns a new rectangle that
represents the union of the two rectangles.
- Parameters:
- r - a rectangle.
- Returns:
- the smallest rectangle containing both the specified
rectangle and this rectangle.
add
public void add(double newx,
double newy)
- Adds a point, specified by the arguments
newx
and newy, to this rectangle. The resulting rectangle is
the smallest rectangle that contains both the original rectangle
and the specified point.
After adding a point, a call to contains with the
added point as an argument will not necessarily return
true. The contains method does not
return true for points on the right or bottom
edges of a rectangle. Therefore if the added point falls on
the left or bottom edge of the enlarged rectangle,
contains will return false for that point.
- Parameters:
- newx - the x coordinate of the new point.
- newy - the y coordinate of the new point.
add
public void add(DoublePoint pt)
- Adds the point
pt to this rectangle. The resulting
rectangle is the smallest rectangle that contains both the
original rectangle and the specified point.
After adding a point, a call to contains with the
added point as an argument will not necessarily return
true. The contains method does not
return true for points on the right or bottom
edges of a rectangle. Therefore if the added point falls on
the left or bottom edge of the enlarged rectangle,
contains will return false for that point.
- Parameters:
- pt - the new point to add to the rectangle.
add
public void add(DoubleRectangle r)
- Adds a rectangle to this rectangle. The resulting rectangle is
the union of the two rectangles.
- Parameters:
- a - rectangle.
grow
public void grow(double h,
double v)
- Grows the rectangle both horizontally and vertically.
This method modifies the rectangle so that it is
h units larger on both the left and right side,
and v units larger at both the top and bottom.
The new rectangle has (x - h,
y - v) as its top-left corner, a
width of
width + 2h,
and a height of
height + 2v.
If negative values are supplied for h and
v, the size of the rectangle decreases accordingly.
The grow method does not check whether the resulting
values of width and height are
non-negative.
- Parameters:
- h - the horizontal expansion.
- v - the vertical expansion.
isEmpty
public boolean isEmpty()
- Determines whether this rectangle is empty. A rectangle is empty if
its width or its height is less than or equal to zero.
- Returns:
-
true if this rectangle is empty;
false otherwise.
hashCode
public int hashCode()
- Returns the hashcode for this rectangle.
- Returns:
- the hashcode for this rectangle.
- Overrides:
- hashCode in class Object
equals
public boolean equals(Object obj)
- Checks whether two rectangles are equal.
The result is true if and only if the argument is not
null and is a DoubleRectangle object that has the
same top-left corner, width, and height as this rectangle.
- Parameters:
- obj - the object to compare with.
- Returns:
-
true if the objects are equal;
false otherwise.
- Overrides:
- equals in class Object
toString
public String toString()
- Returns a string representation of this rectangle
and its values.
- Returns:
- a string representation of this rectangle.
- Overrides:
- toString in class Object
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