ucar.unidata.gis
Class AbstractGisFeature

java.lang.Object
  ucar.unidata.gis.AbstractGisFeature

All Implemented Interfaces:

GisFeature

Direct Known Subclasses:

EsriShapefile.EsriFeature, GisFeatureAdapter

public abstract class AbstractGisFeature
extends Object
implements GisFeature

Abstract class that implements common methods for concrete implementations of GisFeature.

Version:

$Id: AbstractGisFeature.java,v 1.19 2006/08/22 19:57:07 dmurray Exp $

Author:

Russ Rew, John Caron

Constructor Summary

AbstractGisFeature()

Method Summary

abstract Rectangle2D	getBounds2D() _more_
abstract Iterator	getGisParts() _more_
SampledSet	getMapLines() Convert a GisFeature to a visad.SampledSet, which is either a single Gridded2DSet (if there is only one part to the feature) or a UnionSet of Gridded2DSet (if there are multiple parts).
abstract int	getNumParts() _more_
abstract int	getNumPoints() _more_
Shape	getProjectedShape(ucar.unidata.geoloc.ProjectionImpl displayProject) Convert this GisFeature to a java.awt.Shape.
Shape	getProjectedShape(ucar.unidata.geoloc.ProjectionImpl dataProject, ucar.unidata.geoloc.ProjectionImpl displayProject) Convert this GisFeature to a java.awt.Shape.
Shape	getShape() Convert this GisFeature to a java.awt.Shape, using the default coordinate system, mapping gisFeature(x,y) -> screen(x,y).

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractGisFeature

public AbstractGisFeature()

Method Detail

getBounds2D

public abstract Rectangle2D getBounds2D()

_more_

Specified by:

getBounds2D in interface GisFeature

Returns:

_more_

getNumPoints

public abstract int getNumPoints()

_more_

Specified by:

getNumPoints in interface GisFeature

Returns:

_more_

getNumParts

public abstract int getNumParts()

_more_

Specified by:

getNumParts in interface GisFeature

Returns:

_more_

getGisParts

public abstract Iterator getGisParts()

_more_

Specified by:

getGisParts in interface GisFeature

Returns:

_more_

getShape

public Shape getShape()

Convert this GisFeature to a java.awt.Shape, using the default coordinate system, mapping gisFeature(x,y) -> screen(x,y). LOOK STILL HAVE TO crossSeam()

Returns:

shape corresponding to this feature.

getProjectedShape

public Shape getProjectedShape(ucar.unidata.geoloc.ProjectionImpl displayProject)

Convert this GisFeature to a java.awt.Shape. The data coordinate system is assumed to be (lat, lon), use the projection to transform points, so project.latLonToProj(gisFeature(x,y)) -> screen(x,y).

Parameters:

displayProject - Projection to use.

Returns:

shape corresponding to this feature

getProjectedShape

public Shape getProjectedShape(ucar.unidata.geoloc.ProjectionImpl dataProject,
                               ucar.unidata.geoloc.ProjectionImpl displayProject)

Convert this GisFeature to a java.awt.Shape. The data coordinate system is in the coordinates of dataProject, and the screen is in the coordinates of displayProject. So: displayProject.latLonToProj( dataProject.projToLatLon(gisFeature(x,y))) -> screen(x,y).

Parameters:

dataProject - data Projection to use.

displayProject - display Projection to use.

Returns:

shape corresponding to this feature

getMapLines

public SampledSet getMapLines()

Convert a GisFeature to a visad.SampledSet, which is either a single Gridded2DSet (if there is only one part to the feature) or a UnionSet of Gridded2DSet (if there are multiple parts). Each Gridded2DSet is a sequence of line segments that is supposed to be drawn as a continuous line.

Returns:

UnionSet of Gridded2DSet corresponding to this feature.