geometry
Class CoordPlane

java.lang.Object
  geometry.AffineSpace
      geometry.Plane
          geometry.CoordPlane

All Implemented Interfaces:

Geometry

public class CoordPlane

extends Plane

A plane which is parallel to two coordinate vectors. The methods for such a plane are much simpler than in the arbitrary case.

Author:

karsten

Field Summary

protected double	scaling 1/length of the two base vectors
protected int	xCoord The number of the first coordinate vector
protected int	yCoord The number of the second coordinate vector

Fields inherited from class geometry.AffineSpace

origin, space

Constructor Summary

CoordPlane(Point origin, int xCoord, int yCoord)
Constructs a new plane from a point and two unit coordinate vectors.

CoordPlane(Point origin, int xCoord, int yCoord, double scale)
Constructs a new plane from a point and two coordinate vectors of equal length.

Method Summary

boolean	contains(Point p)
double	getScaling() Returns 1/length of the two base vectors
int	getXCoord() Returns the number of the first coordinate vector
int	getYCoord() Returns the number of the second coordinate vector
java.awt.geom.Point2D	localProjection(Point p) Returns the image of the specified point after projecting it orthogonally to the plane (in local coordinates).

Methods inherited from class geometry.Plane

getX, getY

Methods inherited from class geometry.AffineSpace

add, add, affineClosure, canBeContainedIn, canContain, canIntersect, contains, contains, copy, dim, getGenerator, getNormal, getOrigin, getRandomRay, intersection, isContainedIn, localization, localization, outerDim, print, project, toShape

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

xCoord

protected int xCoord

The number of the first coordinate vector

yCoord

protected int yCoord

The number of the second coordinate vector

scaling

protected double scaling

1/length of the two base vectors

Constructor Detail

CoordPlane

public CoordPlane(Point origin,
                  int xCoord,
                  int yCoord)

Constructs a new plane from a point and two unit coordinate vectors. The two vectors will become the base vectors for the local coordinate system.

Parameters:

origin - any point in the plane

CoordPlane

public CoordPlane(Point origin,
                  int xCoord,
                  int yCoord,
                  double scale)

Constructs a new plane from a point and two coordinate vectors of equal length. The two vectors will become the base vectors for the local coordinate system.

Parameters:

origin - any point in the plane

Method Detail

getXCoord

public int getXCoord()

Returns the number of the first coordinate vector

getYCoord

public int getYCoord()

Returns the number of the second coordinate vector

getScaling

public double getScaling()

Returns 1/length of the two base vectors

contains

public boolean contains(Point p)

localProjection

public java.awt.geom.Point2D localProjection(Point p)

Description copied from class: Plane

Returns the image of the specified point after projecting it orthogonally to the plane (in local coordinates).

Overrides:

localProjection in class Plane

Parameters:

p - any point

Returns:

the coordinates of the projection of p in the local coordinate system.