Package noaa.coastwatch.render

Class PolygonOverlay

java.lang.Object

noaa.coastwatch.render.EarthDataOverlay

noaa.coastwatch.render.LineOverlay

noaa.coastwatch.render.PolygonOverlay

All Implemented Interfaces:

Serializable, Cloneable, Comparable

Direct Known Subclasses:

AnnotationOverlay, CoastOverlay, FilledShapeOverlay, PointFeatureOverlay, PolygonFeatureOverlay

public abstract class PolygonOverlay
extends LineOverlay

A polygon overlay annotes a data view with vector-specified polygon lines and shapes. The polygon overlay adds the concept of a fill color to the parent class.

Since:

3.1.1

Author:

Peter Hollemans

See Also:

• Serialized Form

Field Summary

Fields inherited from class noaa.coastwatch.render.LineOverlay

drawingShadow

Fields inherited from class noaa.coastwatch.render.EarthDataOverlay

alpha, lastTrans, prepared

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	PolygonOverlay(Color color)	Constructs a new polygon overlay.
protected	PolygonOverlay(Color color, int layer, Stroke stroke, Color fillColor)	Constructs a new polygon overlay.

Method Summary

Modifier and Type	Method	Description
List	getColors()	Gets a list of all the colors used by this overlay.
Color	getFillColor()	Gets the polygon fill color.
Color	getFillColorWithAlpha()	Gets the polygon fill color with alpha component.
void	setFillColor(Color fillColor)	Sets the polygon fill color.

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, draw, getAlphaVersion, getColor, getColorWithAlpha, getLayer, getMetadataAtPoint, getName, getTransparency, getVisible, hasMetadata, invalidate, isPrepared, needsPrepare, prepare, setColor, setLayer, setName, setTransparency, setVisible

Methods inherited from class java.lang.Object

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

Constructor Details

PolygonOverlay

protected PolygonOverlay(Color color,
 int layer,
 Stroke stroke,
 Color fillColor)

Constructs a new polygon overlay.

Parameters:

color - the overlay color.

layer - the overlay layer number.

stroke - the stroke to use for vector paths.

fillColor - the fill color to use for polygon fills.

PolygonOverlay

protected PolygonOverlay(Color color)

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

Parameters:

color - the overlay color.

Method Details

setFillColor

public void setFillColor(Color fillColor)

Sets the polygon fill color. Only opaque colors are allowed. If the color has an alpha component, the alpha value is set to 255 and the overlay transparency is set using the new alpha value. This behaviour may be changed in the future to ignore the color's alpha value entirely -- overlay transparency should really be set by calling EarthDataOverlay.setTransparency(int).

Parameters:

fillColor - the new opaque polygon fill color, or null to perform no filling.

getFillColor

public Color getFillColor()

Gets the polygon fill color. The polygon fill color is always opaque, even if a call to setFillColor(java.awt.Color) specifies a color with an alpha component. The overlay transparency may be accessed through EarthDataOverlay.setTransparency(int) or EarthDataOverlay.getTransparency().

Returns:

the polygon fill color.

getFillColorWithAlpha

public Color getFillColorWithAlpha()

Gets the polygon fill color with alpha component.

getColors

public List getColors()

Gets a list of all the colors used by this overlay.

Overrides:

getColors in class EarthDataOverlay

Returns:

the list of colors.