Package skyview.geometry.projecter

Class Tot

java.lang.Object

skyview.geometry.Transformer

skyview.geometry.Projecter

skyview.geometry.projecter.Tot

All Implemented Interfaces:

Serializable, Component

public class Tot
extends Projecter

This class provides for the translation between coordinates and the Tiled Octahedral Tangent projection.

The projection is centered at the north pole. The south pole is projected to the four corners at (+/-1, +/-1). The equator projects to the diagonals running between the points (-1,0)->(0,1), (0,1)->(1,0), (1,0)->(0,-1), (-1,0)->(0,-1). These diagonals divide the four unit squares at the center of the coordinate grid into 8 right isoceles triangles.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	Tot.TotDeproj	Deproject from the plane back to the unit sphere

Constructor Summary

Constructors

Constructor	Description
Tot()

Method Summary

Modifier and Type	Method	Description
String	getDescription()	Get the description of this component.
String	getName()	Get the name of this component.
Deprojecter	inverse()	Get the inverse
boolean	isInverse(Transformer obj)	Are these two transformations, inverses of each other? This method is used to optimize a series of transformations where transformations.
static void	main(String[] args)
void	transform(double[] unit, double[] plane)	Convert a single point where the output vector is supplied.

Methods inherited from class java.lang.Object

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

Methods inherited from class skyview.geometry.Projecter

allValid, getInputDimension, getOutputDimension, getXTiling, getYTiling, shadowPoint, straddle, straddleable, straddleComponents, tissot, validPosition

Methods inherited from class skyview.geometry.Transformer

transform, transform

Constructor Detail

Tot

public Tot()

Method Detail

getName

public String getName()

Description copied from interface: Component

Get the name of this component.

getDescription

public String getDescription()

Description copied from interface: Component

Get the description of this component.

isInverse

public boolean isInverse(Transformer obj)

Description copied from class: Transformer

Are these two transformations, inverses of each other? This method is used to optimize a series of transformations where transformations.

Specified by:

isInverse in class Transformer

inverse

public Deprojecter inverse()

Description copied from class: Projecter

Get the inverse

Specified by:

inverse in class Projecter

transform

public void transform(double[] unit,
                      double[] plane)

Description copied from class: Transformer

Convert a single point where the output vector is supplied.

Specified by:

transform in class Transformer

Parameters:

unit - The input vector.

plane - The output vector, it may be the same as the input vector if the dimensionalities are the same. All transformers are expected to work with aliased inputs and output.

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception