net.richarddawkins.watchmaker.geom

Class DoubleRect

java.lang.Object

net.richarddawkins.watchmaker.geom.DoubleRect

All Implemented Interfaces:

java.lang.Cloneable

public class DoubleRect
extends java.lang.Object
implements java.lang.Cloneable

Java class to simulate a QuickDraw Rect (rectangle) with double coordinates In Pascal, a QuickDraw Rect is defined this way: TYPE RECT = RECORD (left, top, right, bottom: INTEGER); The bounding box calculations in Classic Watchmaker use a Pascal Rect record, which is defined by left, top, right, and bottom coordinates. This is at variance with the Java way of doing things, where Rectangles are defined by their upper left corner (x,y) and (width,height). This class bridges the two. This implementation of Rect also includes convenience methods for determining the midpoint of the Rect, and for expanding the boundaries of the rectangle in response to supplied values.

Author:

alan

Field Summary

Fields

Modifier and Type	Field and Description
double	bottom
double	left
double	right
double	top

Constructor Summary

Constructors

Constructor and Description
DoubleRect()
DoubleRect(double left, double top, double right, double bottom) Construct a new Rect with specified left, top, right, and bottom.

Method Summary

Modifier and Type	Method and Description
java.lang.Object	clone()
boolean	contains(Point p)
void	expandBottom(double bottom, double thick) Push the Rect's bottom boundary downward if necessary.
void	expandHorizontal(double h, double thick)
void	expandLeft(double left, double thick) Push the Rect's left boundary leftward if necessary.
void	expandPoint(Point point, double thick)
void	expandRight(double right, double thick) Push the Rect's righthand boundary rightward if necessary.
void	expandTop(double top, double thick) Push the Rect's top boundary upward if necessary.
void	expandVertical(double v, double thick)
Dim	getDim()
double	getHeight()
DoublePoint	getMidPoint()
DoubleRect	getScaled(int scale)
double	getWidth()
void	setRect(double newleft, double newtop, double newright, double newbottom)
Rect	toRect(Dim scale)
java.lang.String	toString()
DoubleRect	unionRect(DoubleRect r) Expand this rectangle where necessary so that it encompasses the given rectangle.
void	zero()
void	zeroRect()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

left

public double left

right

public double right

top

public double top

bottom

public double bottom

Constructor Detail

DoubleRect

public DoubleRect()

DoubleRect

public DoubleRect(double left,
                  double top,
                  double right,
                  double bottom)

Construct a new Rect with specified left, top, right, and bottom. This is the same order of parameters with which Quickdraw Rects are initialized using SetRect.

Parameters:

left - left edge of the rectangle.

top - top edge of the rectangle.

right - right edge of the rectangle.

bottom - bottom edge of the rectangle.

Method Detail

clone

public java.lang.Object clone()

Overrides:

clone in class java.lang.Object

zero

public void zero()

expandLeft

public void expandLeft(double left,
                       double thick)

Push the Rect's left boundary leftward if necessary. If the left value was null, set it to the new left value.

Parameters:

left - the potential new lefthand boundary

thick - the thickness of the drawing primitive

expandRight

public void expandRight(double right,
                        double thick)

Push the Rect's righthand boundary rightward if necessary. If the righthand value was null, set it to the new righthand value.

Parameters:

right - the potential new righthand boundary

thick - the thickness of the drawing primitive

expandTop

public void expandTop(double top,
                      double thick)

Push the Rect's top boundary upward if necessary. If the top value was null, set it to the new top value.

Parameters:

top - the potential new top boundary

thick - the thickness of the drawing primitive

expandBottom

public void expandBottom(double bottom,
                         double thick)

Push the Rect's bottom boundary downward if necessary. If the bottom value was null, set it to the new top value.

Parameters:

bottom - the potential new bottom boundary

thick - the thickness of the drawing primitive

expandPoint

public void expandPoint(Point point,
                        double thick)

expandHorizontal

public void expandHorizontal(double h,
                             double thick)

expandVertical

public void expandVertical(double v,
                           double thick)

getMidPoint

public DoublePoint getMidPoint()

toRect

public Rect toRect(Dim scale)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

unionRect

public DoubleRect unionRect(DoubleRect r)

Expand this rectangle where necessary so that it encompasses the given rectangle.

Parameters:

r - the rectangle to be union'ed with this one.

Returns:

the union'ed rectangle

getWidth

public double getWidth()

getHeight

public double getHeight()

getDim

public Dim getDim()

setRect

public void setRect(double newleft,
                    double newtop,
                    double newright,
                    double newbottom)

zeroRect

public void zeroRect()

contains

public boolean contains(Point p)

getScaled

public DoubleRect getScaled(int scale)