skyview.geometry.projecter

Class Car

java.lang.Object

skyview.geometry.Transformer

skyview.geometry.Projecter

skyview.geometry.projecter.Car

All Implemented Interfaces:

java.io.Serializable, Component

public final class Car
extends Projecter

This class implements the Cartesian (rectangular) projection. Note that the tangent point is assumed to be at the north pole. This class assumes preallocated arrays for maximum efficiency.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	Car.CarDeproj

Constructor Summary

Constructors

Constructor and Description
Car()

Method Summary

Modifier and Type	Method and Description
boolean	allValid() The entire plane is valid
java.lang.String	getDescription() Return a description of the component
java.lang.String	getName() Get the name of the compontent
double	getXTiling() Get tile offsets
double	getYTiling() Get tile offsets
Deprojecter	inverse() Get the inverse transformation
boolean	isInverse(Transformer t) Is this an inverse of some other transformation?
double[]	shadowPoint(double x, double y) Find the shadow to this point
boolean	straddle(double[][] vertices) Does this area appear to straddle the standard region?
boolean	straddleable() Is it possible for a pixel to straddle the valid region.
double[][][]	straddleComponents(double[][] inputs) Return a set of straddle points.
double[]	tissot(double x, double y) Return the Tissot indicatrix for point
void	transform(double[] sphere, double[] plane) Do the transformation

Methods inherited from class skyview.geometry.Projecter

getInputDimension, getOutputDimension, validPosition

Methods inherited from class skyview.geometry.Transformer

transform, transform

Methods inherited from class java.lang.Object

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

Constructor Detail

Car

public Car()

Method Detail

getName

public java.lang.String getName()

Get the name of the compontent

getDescription

public java.lang.String getDescription()

Return a description of the component

inverse

public Deprojecter inverse()

Get the inverse transformation

Specified by:

inverse in class Projecter

getXTiling

public double getXTiling()

Get tile offsets

Overrides:

getXTiling in class Projecter

Returns:

The period in X in radians. A value of 0 means that there is not periodicity.

getYTiling

public double getYTiling()

Get tile offsets

Overrides:

getYTiling in class Projecter

Returns:

The tiling period in radians. A value of 0 means that there is no period.

isInverse

public boolean isInverse(Transformer t)

Is this an inverse of some other transformation?

Specified by:

isInverse in class Transformer

shadowPoint

public double[] shadowPoint(double x,
                            double y)

Find the shadow to this point

Overrides:

shadowPoint in class Projecter

transform

public final void transform(double[] sphere,
                            double[] plane)

Do the transformation

Specified by:

transform in class Transformer

Parameters:

sphere - 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.

allValid

public boolean allValid()

The entire plane is valid

Overrides:

allValid in class Projecter

straddle

public boolean straddle(double[][] vertices)

Does this area appear to straddle the standard region?

Overrides:

straddle in class Projecter

straddleable

public boolean straddleable()

Description copied from class: Projecter

Is it possible for a pixel to straddle the valid region.

Overrides:

straddleable in class Projecter

straddleComponents

public double[][][] straddleComponents(double[][] inputs)

Return a set of straddle points.

Overrides:

straddleComponents in class Projecter

tissot

public double[] tissot(double x,
                       double y)

Return the Tissot indicatrix for point

Overrides:

tissot in class Projecter

Parameters:

x - The X-value at which the Tissot indicatrix is to be calculated.

y - The Y-value at which the Tissot indicatrix is to be calculated.

Returns:

A three element double vector [Semimajor, semiminor, position angle] with the axes size and positional angle of the ellipse.