org.jeospace.coordinate
Class DefaultConvention

java.lang.Object
  org.jeospace.coordinate.DefaultConvention

All Implemented Interfaces:

CartesianConvention

public class DefaultConvention

extends java.lang.Object

implements CartesianConvention

The default CartesianConvention. Provided primarily for documentation.

This convention, implemented as the default in the Cartesian object provides a simple mapping of a VRML97/X3D cartesian convention to the spherical and ellipsodial coordinate systems of this package.

The VRML convention (see: The Annotated VRML97 Reference Manual) for the alignment of the cartesian coordinate axis's are: the positive Y-axis up, the positive X-axis to the right and the positive Z-axis projects out.

The relationships of the cartesian axis's to the spherical coordinate system's references are:

• The origin of the cartesian system is also the origin of the spherical system.
• The Y-axis is the polar axis. Planes of positive latitude intersect the positive Y-axis. Planes of negative latitude intersect the negative Y-axis.
• The X-Z plane is the equatorial plane
• The Y-Z plane is the plane of the prime meridian, the positive Z-axis intersects the prime meridian.
• Following the convention of the right hand rule, spherical and ellipsoidal longitudes increase in a positive right handed rotation about the positive Y-axis (i.e. to the east) and decrease in a negative right handed rotation about the positive Y-axis (i.e. to the west)

Version:

$Revision: 1.1.1.1 $

Author:

Rex Melton

Constructor Summary

DefaultConvention()
Constructor

Method Summary

void	fromDefault(double[] values) Rearrange in place the array of double values from the default convention to the required convention in the correct x, y, z order.
void	toDefault(double[] values) Rearrange in place the array of double values from the required convention to the default convention in the correct x, y, z order.
java.lang.String	toString() Return the String identifier of this CartesianConvention

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultConvention

public DefaultConvention()

Constructor

Method Detail

toDefault

public void toDefault(double[] values)

Rearrange in place the array of double values from the required convention to the default convention in the correct x, y, z order.

Specified by:

toDefault in interface CartesianConvention

fromDefault

public void fromDefault(double[] values)

Rearrange in place the array of double values from the default convention to the required convention in the correct x, y, z order.

Specified by:

fromDefault in interface CartesianConvention

toString

public java.lang.String toString()

Return the String identifier of this CartesianConvention

Specified by:

toString in interface CartesianConvention