com.partnersoft.geometry.projection
Class Projection

java.lang.Object
  com.partnersoft.geometry.projection.Projection

All Implemented Interfaces:

Coggable

Direct Known Subclasses:

NullProjection, Simple, StandardProjection

public abstract class Projection
extends java.lang.Object
implements Coggable

A projection from lat/long to some sort of x, y coordinates.

Author:

Paul Reavis Copyright 2001 Partner Software, Inc.

Constructor Summary

Projection()

Method Summary

void	project(DoubleBuffer coords) Treats the given DoubleBuffer as an array of x,y pairs, and projects all of them.
Point	project(double longitude, double latitude)
abstract void	project(Point point) Project from latlong to xy.
void	projectFeet(DoubleBuffer coords) Same as project(DoubleBuffer), but produces feet instead of meters.
Point	projectFeet(double longitude, double latitude)
void	projectFeet(Point point) Same as project, but returns feet instead of meters.
void	reverse(DoubleBuffer coords) Treats the given DoubleBuffer as an array of x,y pairs, and reverse projects all of them.
Point	reverse(double x, double y)
abstract void	reverse(Point point) Reverse project from xy to latlong.
void	reverseFeet(DoubleBuffer coords) Same as reverse(DoubleBuffer), but treats input as feet instead of meters.
Point	reverseFeet(double x, double y)
void	reverseFeet(Point point) Same as reverse, but with input in feet instead of meters.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.partnersoft.data.cog.Coggable

getState, setState

Constructor Detail

Projection

public Projection()

Method Detail

project

public abstract void project(Point point)

Project from latlong to xy. Modifies the input Point. Remember that Point.x is longitude, Point.y is latitude.

reverse

public abstract void reverse(Point point)

Reverse project from xy to latlong. Results are returned with point.x = long, point.y = lat. Modifies input.

reverse

public Point reverse(double x,
                     double y)

project

public Point project(double longitude,
                     double latitude)

reverseFeet

public Point reverseFeet(double x,
                         double y)

projectFeet

public Point projectFeet(double longitude,
                         double latitude)

projectFeet

public void projectFeet(Point point)

Same as project, but returns feet instead of meters. Modifies input.

reverseFeet

public void reverseFeet(Point point)

Same as reverse, but with input in feet instead of meters. Modifies input.

project

public void project(DoubleBuffer coords)

Treats the given DoubleBuffer as an array of x,y pairs, and projects all of them. This implementation iterates, using project(Point). Subclasses may have a better/faster scheme.

reverse

public void reverse(DoubleBuffer coords)

Treats the given DoubleBuffer as an array of x,y pairs, and reverse projects all of them. This implementation iterates, using project(Point). Subclasses may have a better/faster scheme.

projectFeet

public void projectFeet(DoubleBuffer coords)

Same as project(DoubleBuffer), but produces feet instead of meters.

reverseFeet

public void reverseFeet(DoubleBuffer coords)

Same as reverse(DoubleBuffer), but treats input as feet instead of meters.