us.zuercher.gpx2map.plotter
Class ImageShape

java.lang.Object
  us.zuercher.gpx2map.plotter.AbstractShape
      us.zuercher.gpx2map.plotter.ImageShape

public class ImageShape
extends AbstractShape

ImageShape extends AbstractShape to render the contents of an image during plotting. By accepting an array of raster line data in the constructor, a single ImageMarkerStyle or other image-based MarkerStyle can create many ImageShapes that share references to the same image data.

Author:

Stephan Zuercher

Field Summary

private Point	center Center point of the rendered ImageShape.
private boolean	hasAlpha Alpha channel flag.
private int	height Image height, computed from rasterLines.
private int[][][]	rasterLines Image raster data.
private int	startingRow Starting row of image data.
private int	width Image width, computed from rasterLines.

Fields inherited from class us.zuercher.gpx2map.plotter.AbstractShape

pixelsByRow, zOrdering

Constructor Summary

ImageShape(int[][][] rasterLines, boolean hasAlpha, Point center)
Constructs a new ImageShape.

Method Summary

void	computePixels(Dimension bounds) Computes the pixels necessary to draw this shape.
int	startDrawingRow() Returns the starting row of image data.

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

getPixelRowIterator, getZOrdering, setZOrdering

Methods inherited from class java.lang.Object

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

Field Detail

rasterLines

private int[][][] rasterLines

Image raster data.

width

private final int width

Image width, computed from rasterLines.

height

private final int height

Image height, computed from rasterLines.

hasAlpha

private final boolean hasAlpha

Alpha channel flag.

center

private final Point center

Center point of the rendered ImageShape.

startingRow

private final int startingRow

Starting row of image data. Computed from height and center.

Constructor Detail

ImageShape

public ImageShape(int[][][] rasterLines,
                  boolean hasAlpha,
                  Point center)

Constructs a new ImageShape. The data in rasterLines is never modified and may be safely reused for another ImageShape.

The dimensios of rasterLines is [height][width][depth], where depth is 3 when hasAlpha is false and 4 if hasAlpha is true.

Parameters:

rasterLines - image data

hasAlpha - alpha channel flag

center - center point of rendered image

Method Detail

computePixels

public void computePixels(Dimension bounds)

Computes the pixels necessary to draw this shape.

Specified by:

computePixels in class AbstractShape

Parameters:

bounds - the image dimensions

See Also:

AbstractShape.computePixels(Dimension)

startDrawingRow

public int startDrawingRow()

Returns the starting row of image data.

Specified by:

startDrawingRow in class AbstractShape

Returns:

the starting row of image data.

See Also:

AbstractShape.startDrawingRow()