org.opengis.go.spatial
Class PathType

Object
  CodeList
      SimpleEnumerationType
          PathType

All Implemented Interfaces:

Serializable, Comparable

Direct Known Subclasses:

GlobalPathType, UnprojectedPathType, VectorPathType

public class PathType
extends SimpleEnumerationType

This class serves as the base class for objects that represent the various methods for computing a path between two locations. Singleton instances of PathType will exist to represent for example a path of constant bearing (rhumbline), or a great circle path.

Path type is an algorithmic sequence of interpolation and projection.

• For rhumbline, great circle, and vector, first interpolation is done on the verteces, which gives in-between points. These in-between points are then projected into the display space, which converts them to display points.
• For pixel-straight and spline, the verteces are first projected into the display space as display points. These display points are interpolated, which generates in-between display points.

For each path type, an implementations will iteratively apply the respective algorithms until the appropriate display resolution is reached.

Path Type	Interpolation Method
rhumbline	constant bearing
great circle	geodesic
vector	linear in worldspace (interpolation before projection)
pixel-straight	linear in display space (interpolation after projection)
spline	cubic in display space (interpolation after projection)

Version:

$Revision: 1.6 $, $Date: 2005/05/16 10:54:58 $

See Also:

Serialized Form

Field Summary

protected static List

VALUES The list of enumeration available in this virtual machine.

Constructor Summary

protected

PathType(String name, String description) Creates a new PathType with the given value and name.

Method Summary

CodeList[]	family() Returns the list of enumerations of the same kind than this enum.
static PathType[]	values() Returns the list of PathTypes.

Methods inherited from class SimpleEnumerationType

getDescription, getIcon, getNullIcon, loadIconResource, toString

Methods inherited from class CodeList

compareTo, name, ordinal, readResolve

Methods inherited from class Object

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

Field Detail

VALUES

protected static final List VALUES

The list of enumeration available in this virtual machine. Must be declared first!.

Constructor Detail

PathType

protected PathType(String name,
                   String description)

Creates a new PathType with the given value and name.

Parameters:

name - the short name for the enum.

description - the description for the enum.

Method Detail

values

public static PathType[] values()

Returns the list of PathTypes.

family

public CodeList[] family()

Returns the list of enumerations of the same kind than this enum.

Specified by:

family in class CodeList