prajna.geo

Class StretchRect

java.lang.Object

prajna.geo.Projection

prajna.geo.StretchRect

public class StretchRect
extends Projection

Projection class representing Equirectangular projection distorted to fit an arbitrary rectangle. This projection allows the width and height of the viewing area to perfectly match the geographic bounds, even if the window size is not appropriately sized. Any geoid eccentricity is ignored by this projection.

Author:

Edward Swing

Constructor Summary

Constructors

Constructor and Description
StretchRect()

Method Summary

Methods

Modifier and Type	Method and Description
GeoCoord	getCoord(java.awt.Point point) Get the geographic coordinate which projects to the given screen coordinate.
java.awt.Shape	getWorldShape() Get the world shape for this projection.
java.awt.Point	project(GeoCoord coord) Project a geographic coordinate into screen coordinates
java.awt.Point[]	project(GeoCoord[] coords) Project a series of geographic coordinate into screen coordinates
protected void	rescale() Rescales the projection.

Methods inherited from class prajna.geo.Projection

getGeoBounds, getGeoid, getProjCenter, getViewBounds, setGeoBounds, setGeoid, setProjCenter, setViewBounds, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

StretchRect

public StretchRect()

Method Detail

getCoord

public GeoCoord getCoord(java.awt.Point point)

Get the geographic coordinate which projects to the given screen coordinate.

Specified by:

getCoord in class Projection

Parameters:

point - a point in screen coordinates

Returns:

the geographic coordinate

getWorldShape

public java.awt.Shape getWorldShape()

Get the world shape for this projection. This method determines the shape of the world extent, and returns the corresponding shape. For this projection, the geographic bounds will always equal or exceed the view bounds, so the view bounds is returned

Specified by:

getWorldShape in class Projection

Returns:

the shape of the world extent.

project

public java.awt.Point project(GeoCoord coord)

Project a geographic coordinate into screen coordinates

Specified by:

project in class Projection

Parameters:

coord - the geographic coordinate

Returns:

the screen coordinate

project

public java.awt.Point[] project(GeoCoord[] coords)

Project a series of geographic coordinate into screen coordinates

Specified by:

project in class Projection

Parameters:

coords - the geographic coordinates

Returns:

the series of screen coordinates

rescale

protected void rescale()

Rescales the projection. This method is called whenever the extents are changed.

Specified by:

rescale in class Projection