com.ctreber.acearth.projection
Class ProjectionOrtho

java.lang.Object
  com.ctreber.acearth.projection.Projection
      com.ctreber.acearth.projection.ProjectionOrtho

public class ProjectionOrtho
extends Projection

Orthographic projection (show Earth as a ball).

© 2002 Christian Treber, [email protected]

Author:

Christian Treber, [email protected]

Constructor Summary

ProjectionOrtho()

Method Summary

Coordinate	getLocation(int pX, int pY) Translate screen point into coordinate on Earth.
double	inverseProjectX(double pX)
double	inverseProjectY(double pY)
boolean	isVisible(Point3D pPoint) All of Earth is visible.
double	projectX(double pX, double pZ) Project 3D point on x axis.
double	projectY(double pY) Project 3D point on y axis.
protected void	setScale() The scale is not from -PI to PI but from -1 to 1 in this case (the range of x, y, z of the points).

Methods inherited from class com.ctreber.acearth.projection.Projection

finalize, finalizeX, finalizeY, getScale, getViewPos, initTransformTable, inverseFinalizeX, inverseFinalizeY, isWithinImage, project2D, rotate, rotateReverse, setImageHeight, setImageWidth, setShiftX, setShiftY, setViewMagnification, setViewPos, setViewRotation

Methods inherited from class java.lang.Object

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

Constructor Detail

ProjectionOrtho

public ProjectionOrtho()

Method Detail

isVisible

public boolean isVisible(Point3D pPoint)

All of Earth is visible.

Specified by:

isVisible in class Projection

Parameters:

pPoint -

Returns:

getLocation

public Coordinate getLocation(int pX,
                              int pY)

Description copied from class: Projection

Translate screen point into coordinate on Earth.

Specified by:

getLocation in class Projection

Returns:

projectX

public double projectX(double pX,
                       double pZ)

Description copied from class: Projection

Project 3D point on x axis.

Specified by:

projectX in class Projection

Returns:

Longitude, not in rad but from -1 to 1.

inverseProjectX

public double inverseProjectX(double pX)

Specified by:

inverseProjectX in class Projection

projectY

public double projectY(double pY)

Description copied from class: Projection

Project 3D point on y axis.

Specified by:

projectY in class Projection

Returns:

Latitude, not in rad but from -1 to 1.

inverseProjectY

public double inverseProjectY(double pY)

Specified by:

inverseProjectY in class Projection

setScale

protected void setScale()

The scale is not from -PI to PI but from -1 to 1 in this case (the range of x, y, z of the points).

Specified by:

setScale in class Projection