us.zuercher.gpx2map.plotter
Class AlphaPixel

java.lang.Object
  us.zuercher.gpx2map.util.Point
      us.zuercher.gpx2map.plotter.Pixel
          us.zuercher.gpx2map.plotter.AlphaPixel

public class AlphaPixel
extends Pixel

AlphaPixel extends Pixel to provide a Pixel with alpha blending.

Author:

Stephan Zuercher

Field Summary

private int

alpha Alpha channel value.

Constructor Summary

AlphaPixel(int x, int y, Color c, int alpha)
Constructs a new AlphaPixel with a specific color and arbitrary alpha value.

AlphaPixel(int x, int y, int r, int g, int b, int alpha)
Constructs a new AlphaPixel with arbitrary color and alpha values.

Method Summary

void	apply(int[] rgbPixel) Applies this AlphaPixel's color and alpha values against the given pixel value.
boolean	equals(Object other) Tests whether this AlphaPixel is equal to another AlphaPixel.
int	getAlpha() Returns the alpha channel value for this Pixel.
int	hashCode() Returns a reasonable hash code for this AlphaPixel.
String	toString() Returns a reasonable string representation of this AlphaPixel.

Methods inherited from class us.zuercher.gpx2map.plotter.Pixel

asPoint, getBlue, getGreen, getRed

Methods inherited from class us.zuercher.gpx2map.util.Point

above, below, distanceTo, equals, getX, getY, leftOf, rightOf, within, within

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

alpha

private final int alpha

Alpha channel value.

Constructor Detail

AlphaPixel

public AlphaPixel(int x,
                  int y,
                  int r,
                  int g,
                  int b,
                  int alpha)

Constructs a new AlphaPixel with arbitrary color and alpha values.

Parameters:

x - x position

y - y position

r - red color value

g - green color value

b - blue color value

alpha - alpha value

AlphaPixel

public AlphaPixel(int x,
                  int y,
                  Color c,
                  int alpha)

Constructs a new AlphaPixel with a specific color and arbitrary alpha value.

Parameters:

x - x position

y - y position

c - color

alpha - alpha value

Method Detail

getAlpha

public int getAlpha()

Returns the alpha channel value for this Pixel.

Returns:

the alpha channel value for this Pixel.

hashCode

public int hashCode()

Returns a reasonable hash code for this AlphaPixel.

Overrides:

hashCode in class Pixel

Returns:

a reasonable hash code for this AlphaPixel.

equals

public boolean equals(Object other)

Tests whether this AlphaPixel is equal to another AlphaPixel. Able to test against standard Pixels. Does not throw ClassCastException.

Overrides:

equals in class Pixel

Parameters:

other - another AlphaPixel

Returns:

true if equal, false otherwise

toString

public String toString()

Returns a reasonable string representation of this AlphaPixel.

Overrides:

toString in class Pixel

Returns:

a reasonable string representation of this AlphaPixel.

apply

public void apply(int[] rgbPixel)

Applies this AlphaPixel's color and alpha values against the given pixel value. Combines this pixel's color values with the existing color values based on the value of alpha.

Overrides:

apply in class Pixel

Parameters:

rgbPixel - a raster line pixel value.