jdsl.geomobj.ref
Class RatPoint2D
java.lang.Object
|
+--jdsl.geomobj.ref.AbstractGeomObject2D
|
+--jdsl.geomobj.ref.RatPoint2D
- All Implemented Interfaces:
- GeomObject, GeomObject2D, Point2D
- public class RatPoint2D
- extends AbstractGeomObject2D
- implements Point2D
A finite two dimensional geometric point with rational coordinates.
It uses a homogeneous representation of the coordinates; the third
homogeneous coordinate must be positive.
- Version:
- $Id: RatPoint2D.java,v 1.6 2001/04/28 10:52:57 lv Exp $
- Author:
- Masi Oka (mao), Luca Vismara (lv)
Field Summary |
protected java.lang.Number |
w_
|
protected java.lang.Number |
x_
|
protected java.lang.Number |
y_
|
Constructor Summary |
RatPoint2D(int x,
int y)
Constructor that uses two Cartesian coordinates of type int. |
RatPoint2D(int x,
int y,
int w)
Constructor that uses three homogeneous coordinates of type int. |
RatPoint2D(IntPoint2D p)
Constructor that uses an integer point. |
RatPoint2D(long x,
long y)
Constructor that uses two Cartesian coordinates of type long. |
RatPoint2D(long x,
long y,
long w)
Constructor that uses three homogeneous coordinates of type long. |
RatPoint2D(java.lang.Number x,
java.lang.Number y)
Constructor that uses two Cartesian coordinates of type Number. |
RatPoint2D(java.lang.Number x,
java.lang.Number y,
java.lang.Number w)
Constructor that uses three homogeneous coordinates of type Number. |
Method Summary |
int |
arithmeticType()
The arithmetic type of a geometric object is encoded as an
integer number. |
boolean |
equals(java.lang.Object obj)
|
java.lang.Number |
numw()
The direct use of this method is dicouraged; computations should
be performed through methods of GeomTester2D. |
java.lang.Number |
numx()
The direct use of this method is dicouraged; computations should
be performed through methods of GeomTester2D. |
java.lang.Number |
numy()
The direct use of this method is dicouraged; computations should
be performed through methods of GeomTester2D. |
java.lang.String |
toString()
|
double |
x()
This approximate method is provided for visualization purposes
only; computations should be performed through methods of
GeomTester2D. |
double |
y()
This approximate method is provided for visualization purposes
only; computations should be performed through methods of
GeomTester2D. |
Methods inherited from class java.lang.Object |
clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
x_
protected java.lang.Number x_
y_
protected java.lang.Number y_
w_
protected java.lang.Number w_
RatPoint2D
public RatPoint2D(int x,
int y,
int w)
throws InvalidCoordinateException
- Constructor that uses three homogeneous coordinates of type int.
- Parameters:
x
- x-coordinate of the pointy
- y-coordinate of the pointw
- the omogenizing coordinate of the point- Throws:
InvalidCoordinateException
- if w is not positive
RatPoint2D
public RatPoint2D(long x,
long y,
long w)
throws InvalidCoordinateException
- Constructor that uses three homogeneous coordinates of type long.
- Parameters:
x
- x-coordinate of the pointy
- y-coordinate of the pointw
- the omogenizing coordinate of the point- Throws:
InvalidCoordinateException
- if w is not positive
RatPoint2D
public RatPoint2D(java.lang.Number x,
java.lang.Number y,
java.lang.Number w)
throws InvalidCoordinateException
- Constructor that uses three homogeneous coordinates of type Number.
- Parameters:
x
- x-coordinate of the pointy
- y-coordinate of the pointw
- the omogenizing coordinate of the point- Throws:
InvalidCoordinateException
- if w is not positive
RatPoint2D
public RatPoint2D(int x,
int y)
- Constructor that uses two Cartesian coordinates of type int.
- Parameters:
x
- x-coordinate of the pointy
- y-coordinate of the point
RatPoint2D
public RatPoint2D(long x,
long y)
- Constructor that uses two Cartesian coordinates of type long.
- Parameters:
x
- x-coordinate of the pointy
- y-coordinate of the point
RatPoint2D
public RatPoint2D(java.lang.Number x,
java.lang.Number y)
throws InvalidCoordinateException
- Constructor that uses two Cartesian coordinates of type Number.
- Parameters:
x
- x-coordinate of the pointy
- y-coordinate of the point
RatPoint2D
public RatPoint2D(IntPoint2D p)
- Constructor that uses an integer point.
- Parameters:
ip
- an integer point
equals
public boolean equals(java.lang.Object obj)
- Overrides:
equals
in class java.lang.Object
toString
public java.lang.String toString()
- Overrides:
toString
in class java.lang.Object
arithmeticType
public int arithmeticType()
- Description copied from interface:
GeomObject
- The arithmetic type of a geometric object is encoded as an
integer number. Current legal values are:
0 = an integer geometric object
1 = a rational geometric object
- Specified by:
arithmeticType
in interface GeomObject
- Following copied from interface:
jdsl.geomobj.api.GeomObject
- Returns:
- the arithmetic type of this
x
public double x()
- Description copied from interface:
Point2D
- This approximate method is provided for visualization purposes
only; computations should be performed through methods of
GeomTester2D.
- Specified by:
x
in interface Point2D
- Following copied from interface:
jdsl.geomobj.api.Point2D
- Returns:
- a double approximation of the x coordinate of this
y
public double y()
- Description copied from interface:
Point2D
- This approximate method is provided for visualization purposes
only; computations should be performed through methods of
GeomTester2D.
- Specified by:
y
in interface Point2D
- Following copied from interface:
jdsl.geomobj.api.Point2D
- Returns:
- a double approximation of the y coordinate of this
numx
public java.lang.Number numx()
- The direct use of this method is dicouraged; computations should
be performed through methods of GeomTester2D.
numy
public java.lang.Number numy()
- The direct use of this method is dicouraged; computations should
be performed through methods of GeomTester2D.
numw
public java.lang.Number numw()
- The direct use of this method is dicouraged; computations should
be performed through methods of GeomTester2D.