org.icepdf.core.pobjects
Class PRectangle

java.lang.Object
  java.awt.geom.RectangularShape
      java.awt.geom.Rectangle2D
          java.awt.geom.Rectangle2D.Float
              org.icepdf.core.pobjects.PRectangle

All Implemented Interfaces:

java.awt.Shape, java.io.Serializable, java.lang.Cloneable

public class PRectangle
extends java.awt.geom.Rectangle2D.Float

A rectangle in a PDF document is slightly different than the Rectangle class in Java. A PDF rectangle is written as an array of four numbers giving the coordinates of a pair of diagonally opposite corners. Typically, the array takes the form:

[II_x II_y UR_x UR_y]

This specifies the lower-left x, lower-left y, upper-right x, and upper-right y coordinates of the rectangle, in that order. However, this format is not guaranteed and this class normalizes such rectangles.

Another very important difference between PRectangles Rectangles is that PRectangles use the Cartesian Coordinate system, where Rectangles use the Java2D coordinates system. As a result, the user of this class must know the context in which the PRectangle is being used. For example there is a significant difference between the inherited method createIntersection and PRectangles createCartesianIntersection.

Since:

2.0

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.awt.geom.Rectangle2D

java.awt.geom.Rectangle2D.Double, java.awt.geom.Rectangle2D.Float

Field Summary

Fields inherited from class java.awt.geom.Rectangle2D.Float

height, width, x, y

Fields inherited from class java.awt.geom.Rectangle2D

OUT_BOTTOM, OUT_LEFT, OUT_RIGHT, OUT_TOP

Constructor Summary

PRectangle(java.util.List coordinates)
Creates a new PRectangle object.

PRectangle(java.awt.geom.Point2D.Float p1, java.awt.geom.Point2D.Float p2)
Creates a new PRectangle object.

Method Summary

PRectangle	createCartesianIntersection(PRectangle src2) Returns a new PRectangle object representing the intersection of this PRectangle with the specified PRectangle using the Cartesian coordinate system.
java.awt.geom.Rectangle2D.Float	getOriginalPoints() Gets the orgional two points that created the PRectangle object.
static java.util.List	getPRectangleVector(java.awt.geom.Rectangle2D rect) Converts a rectangle defined in user page in Java2D coordinates back to PDF space and in the vector for of the rectangle.
java.awt.geom.Rectangle2D.Float	toJava2dCoordinates() Converts the Cartesian representation of the Rectangle into Rectangle in the Java2D coordinate space.

Methods inherited from class java.awt.geom.Rectangle2D.Float

createIntersection, createUnion, getBounds2D, getHeight, getWidth, getX, getY, isEmpty, outcode, setRect, setRect, setRect, toString

Methods inherited from class java.awt.geom.Rectangle2D

add, add, add, contains, contains, equals, getPathIterator, getPathIterator, hashCode, intersect, intersects, intersectsLine, intersectsLine, outcode, setFrame, union

Methods inherited from class java.awt.geom.RectangularShape

clone, contains, contains, getBounds, getCenterX, getCenterY, getFrame, getMaxX, getMaxY, getMinX, getMinY, intersects, setFrame, setFrame, setFrameFromCenter, setFrameFromCenter, setFrameFromDiagonal, setFrameFromDiagonal

Methods inherited from class java.lang.Object

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

Constructor Detail

PRectangle

public PRectangle(java.awt.geom.Point2D.Float p1,
                  java.awt.geom.Point2D.Float p2)

Creates a new PRectangle object. The points are automatically normalized by the constructor. These two coordinates represent the diagonal corners of the rectangle.

Parameters:

p1 - first point of diagonal, in the Cartesian coordinate space

p2 - second point of diagonal, in the Cartesian coordinate space

PRectangle

public PRectangle(java.util.List coordinates)
           throws java.lang.IllegalArgumentException

Creates a new PRectangle object. The points are automatically normalized by the constructor.

Parameters:

coordinates - a vector containing four elements where the first and second elements represent the x and y coordinates of one point and the third and fourth elements represent the x and y cooordinates of the second point. These two coordinates represent the diagonal corners of the rectangle.

Throws:

java.lang.IllegalArgumentException - thrown if coordinates is null or does not have four elements

Method Detail

createCartesianIntersection

public PRectangle createCartesianIntersection(PRectangle src2)

Returns a new PRectangle object representing the intersection of this PRectangle with the specified PRectangle using the Cartesian coordinate system. If a Java2D coordinate system is used, then the rectangle should be first converted to that space toJava2dCoordinates().

Parameters:

src2 - the Rectangle2D to be intersected with this Rectangle2D.

Returns:

object representing the intersection of the two PRectangles.

getOriginalPoints

public java.awt.geom.Rectangle2D.Float getOriginalPoints()

Gets the orgional two points that created the PRectangle object. The first point is represented by the the rectangle positions x, y and the second poitn is represented by the width and height of the rectangle.

Returns:

rectangle representing the PRectangle object initial two point.

toJava2dCoordinates

public java.awt.geom.Rectangle2D.Float toJava2dCoordinates()

Converts the Cartesian representation of the Rectangle into Rectangle in the Java2D coordinate space.

Returns:

rectangle in the Java2D coordinate space.

getPRectangleVector

public static java.util.List getPRectangleVector(java.awt.geom.Rectangle2D rect)

Converts a rectangle defined in user page in Java2D coordinates back to PDF space and in the vector for of the rectangle.

Parameters:

rect - user space rectangle in Java2D coordinates space.

Returns:

vector notation of rectangle in PDF space.