edu.umn.cs.spatialHadoop.visualization

Class SVGRasterLayer

java.lang.Object

edu.umn.cs.spatialHadoop.visualization.RasterLayer

edu.umn.cs.spatialHadoop.visualization.SVGRasterLayer

public class SVGRasterLayer
extends RasterLayer

A raster layer that contains a set of vector data. It seems wrong because vector and raster are two different things. Although this layer contains vector data, it keeps into consideration that this data is drawn at a specific raster resolution. It automatically simplifies objects drawn on it to match the configured resolution. In addition, it automatically removes very small objects that are much smaller than a pixel and removes some records if they are hidden behind other records.

Author:

Ahmed Eldawy

Field Summary

Fields

Modifier and Type	Field and Description
protected SVGGraphics	svgGraphics Underlying SVG Graphics
protected double	xscale The scale of the image on the x-axis in terms of pixels per input units
protected double	yscale The scale of the image on the y-axis in terms of pixels per input units

Fields inherited from class edu.umn.cs.spatialHadoop.visualization.RasterLayer

height, inputMBR, width

Constructor Summary

Constructors

Constructor and Description
SVGRasterLayer() Default constructor is necessary to be able to deserialize it
SVGRasterLayer(Rectangle inputMBR, int width, int height) Creates a raster layer of the given size for a given (portion of) input data.

Method Summary

Methods

Modifier and Type	Method and Description
void	drawShape(Shape shape)
void	mergeWith(SVGRasterLayer intermediateLayer)
void	readFields(java.io.DataInput in)
void	write(java.io.DataOutput out)
void	writeToFile(java.io.PrintStream ps)

Methods inherited from class edu.umn.cs.spatialHadoop.visualization.RasterLayer

getHeight, getInputMBR, getWidth, projectToImageSpace

Methods inherited from class java.lang.Object

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

Field Detail

svgGraphics

protected SVGGraphics svgGraphics

Underlying SVG Graphics

xscale

protected double xscale

The scale of the image on the x-axis in terms of pixels per input units

yscale

protected double yscale

The scale of the image on the y-axis in terms of pixels per input units

Constructor Detail

SVGRasterLayer

public SVGRasterLayer()

Default constructor is necessary to be able to deserialize it

SVGRasterLayer

public SVGRasterLayer(Rectangle inputMBR,
              int width,
              int height)

Creates a raster layer of the given size for a given (portion of) input data.

Parameters:

inputMBR - - the MBR of the input area to rasterize

width - - width the of the image to generate in pixels

height - - height of the image to generate in pixels

Method Detail

write

public void write(java.io.DataOutput out)
           throws java.io.IOException

Overrides:

write in class RasterLayer

Throws:

java.io.IOException

readFields

public void readFields(java.io.DataInput in)
                throws java.io.IOException

Overrides:

readFields in class RasterLayer

Throws:

java.io.IOException

drawShape

public void drawShape(Shape shape)

mergeWith

public void mergeWith(SVGRasterLayer intermediateLayer)

writeToFile

public void writeToFile(java.io.PrintStream ps)