Package noaa.coastwatch.render

Class ShadowGenerator

java.lang.Object

noaa.coastwatch.render.ShadowGenerator

public class ShadowGenerator
extends Object

The ShadowGenerator class creates drop shadows from the non-transparent pixels in an image.

Since:

3.7.1

Author:

Peter Hollemans

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ShadowGenerator()

Method Summary

Modifier and Type	Method	Description
BufferedImage	createShadow(BufferedImage source, int size, Color color, float alpha)	Creates a new shadow image from the pixels of a source image.
static ShadowGenerator	getInstance()
static void	main(String[] argv)

Methods inherited from class java.lang.Object

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

Constructor Details

ShadowGenerator

protected ShadowGenerator()

Method Details

getInstance

public static ShadowGenerator getInstance()

createShadow

public BufferedImage createShadow(BufferedImage source,
 int size,
 Color color,
 float alpha)

Creates a new shadow image from the pixels of a source image.

Parameters:

source - the source image to use.

size - the size of the shadow blur in pixels.

color - the color of the shadow.

alpha - the alpha transparency

Returns:

the shadow image. The shadow is centered in the image, and a border of 2*size pixels added on all sides. The total size is 4*size pixels larger in each dimension than the source image.

main

public static void main(String[] argv)
                 throws Exception

Throws:

Exception