Package noaa.coastwatch.render

Class TopographyOverlay

java.lang.Object

noaa.coastwatch.render.EarthDataOverlay

noaa.coastwatch.render.LineOverlay

noaa.coastwatch.render.TopographyOverlay

All Implemented Interfaces:

Serializable, Cloneable, Comparable

public class TopographyOverlay
extends LineOverlay

A topography overlay annotates an earth data view with topography lines. The topography lines are rendered from ETOP05 elevation data using the ContourGenerator class. ETOP05 data has a spatial resolution of 5 minutes and a digitization accuracy of 1 meter. Information on ETOP05 may be found at:

http://www.ngdc.noaa.gov/mgg/global/global.html
http://sis.agr.gc.ca/cansis/nsdb/ecostrat/elevation.html

Since:

3.1.7

Author:

Peter Hollemans

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final int[]	BATH_LEVELS	The default bathymetry contour levels.
static final int[]	TOPO_LEVELS	The default topography contour levels.

Fields inherited from class noaa.coastwatch.render.LineOverlay

drawingShadow

Fields inherited from class noaa.coastwatch.render.EarthDataOverlay

alpha, lastTrans, prepared

Constructor Summary

Constructors

Constructor	Description
TopographyOverlay(Color color)	Constructs a new topography overlay.
TopographyOverlay(Color color, int layer, Stroke stroke)	Constructs a new topography overlay.

Method Summary

Modifier and Type	Method	Description
protected void	draw(Graphics2D g, EarthDataView view)	Draws the overlay graphics.
int[]	getLevels()	Gets the topography levels.
protected void	prepare(Graphics2D g, EarthDataView view)	Prepares the overlay graphics prior to drawing.
void	setLevels(int[] levels)	Sets the topography levels.

Methods inherited from class noaa.coastwatch.render.LineOverlay

clip, drawShadow, getDropShadow, getShadowColor, getStroke, render, setDropShadow, setStroke

Methods inherited from class noaa.coastwatch.render.EarthDataOverlay

clone, compareTo, getAlphaVersion, getColor, getColors, getColorWithAlpha, getLayer, getMetadataAtPoint, getName, getTransparency, getVisible, hasMetadata, invalidate, isPrepared, needsPrepare, setColor, setLayer, setName, setTransparency, setVisible, toString

Methods inherited from class java.lang.Object

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

Field Details

TOPO_LEVELS

public static final int[] TOPO_LEVELS

The default topography contour levels.

BATH_LEVELS

public static final int[] BATH_LEVELS

The default bathymetry contour levels.

Constructor Details

TopographyOverlay

public TopographyOverlay(Color color,
 int layer,
 Stroke stroke)
                  throws IOException

Constructs a new topography overlay.

Parameters:

color - the overlay color.

layer - the overlay layer number.

stroke - the stroke to use for vector paths.

Throws:

IOException - if a problem occurs accessing the topography data.

TopographyOverlay

public TopographyOverlay(Color color)
                  throws IOException

Constructs a new topography overlay. The layer number is initialized to 0, and the stroke to the default BasicStroke.

Parameters:

color - the overlay color.

Throws:

IOException - if a problem occurs accessing the topography data.

Method Details

getLevels

public int[] getLevels()

Gets the topography levels.

setLevels

public void setLevels(int[] levels)

Sets the topography levels.

prepare

protected void prepare(Graphics2D g,
 EarthDataView view)

Description copied from class: EarthDataOverlay

Prepares the overlay graphics prior to drawing.

Specified by:

prepare in class EarthDataOverlay

Parameters:

g - the graphics object for drawing.

view - the earth data view.

draw

protected void draw(Graphics2D g,
 EarthDataView view)

Description copied from class: EarthDataOverlay

Draws the overlay graphics.

Specified by:

draw in class EarthDataOverlay

Parameters:

g - the graphics object for drawing.

view - the earth data view.