com.approximatrix.charting.render
Class MultiScatterChartRenderer

java.lang.Object
  com.approximatrix.charting.render.AbstractChartRenderer
      com.approximatrix.charting.render.MultiScatterChartRenderer

All Implemented Interfaces:

Renderer

public class MultiScatterChartRenderer
extends AbstractChartRenderer

This renderer creates a scatter chart based on data contained in a MultiScatterDataModel. The renderer will draw line and/or markers, depending on the settings contained within each data set on the MultiScatterDataModel. This renderer also provides buffering of transformed coordinates, which in turn causes the refresh speed to be increased significantly.

Version:

1.0

Author:

armstrong

Field Summary

protected java.awt.Rectangle	bounds
private boolean	buffer_transform Flag indicating whether coordinate transform buffering should be used
protected CoordSystem	coord
private java.awt.geom.AffineTransform	last Buffered version of the coordinate transform used for painting
protected MultiScatterDataModel	model
protected RowColorModel	rcm
protected double	shapeSize
private java.util.ArrayList	transformed ArrayList of transformed Point2D arrays for buffering the coordinate transform

Constructor Summary

MultiScatterChartRenderer(CoordSystem cs, MultiScatterDataModel model)
Creates new LineChartRenderer

Method Summary

private void	drawline(java.awt.geom.AffineTransform yaxis1, int set, java.awt.Graphics2D g) Performs the line drawing for a given data set if called
private void	drawmarkers(java.awt.geom.AffineTransform yaxis1, int set, java.awt.Graphics2D g) Performs the drawing point markers for a given data set if called
void	fireDataUpdate() Clears all buffered transformation and drawing information
java.awt.Rectangle	getBounds() Returns the graphical bounds for this renderer
ChartDataModel	getChartDataModel() Returns the ChartDataModel whose DataSets are rendered.
CoordSystem	getCoordSystem() Returns the current CoordSystem.
java.awt.Dimension	getPreferredSize() Returns the renderer's prefered size
RowColorModel	getRowColorModel() Returns the RowColorModel currently in use.
java.awt.geom.AffineTransform	getTransform(int axis) Returns the currently defined AffineTransform for any y-axis.
void	render(java.awt.Graphics2D g) Renders the plot to the specifed graphics object.
void	renderChart(java.awt.Graphics2D g) Finally renders the Object in the Graphics object.
void	setAllowBuffer(boolean value) Sets whether the renderer can buffer data internally for faster drawing
void	setBounds(java.awt.Rectangle bounds) Sets the graphical bounds for this renderer
void	setChartDataModel(ChartDataModel model) Sets the ChartDataModel whose DataSets are rendered.
void	setCoordSystem(CoordSystem cs) Sets the CoordSystem which contains the AffineTransforms to translate into pixel space.
void	setRowColorModel(RowColorModel rcm) Sets a RowColorModel to define the correlation of row titles and colors used for the Legend.

Methods inherited from class java.lang.Object

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

Field Detail

bounds

protected java.awt.Rectangle bounds

coord

protected CoordSystem coord

model

protected MultiScatterDataModel model

rcm

protected RowColorModel rcm

shapeSize

protected double shapeSize

last

private java.awt.geom.AffineTransform last

Buffered version of the coordinate transform used for painting

transformed

private java.util.ArrayList transformed

ArrayList of transformed Point2D arrays for buffering the coordinate transform

buffer_transform

private boolean buffer_transform

Flag indicating whether coordinate transform buffering should be used

Constructor Detail

MultiScatterChartRenderer

public MultiScatterChartRenderer(CoordSystem cs,
                                 MultiScatterDataModel model)

Creates new LineChartRenderer

Parameters:

rcm - the RowColorModel needed to determine the right colors

cs - the CoordSystem used to translate values into points

model - the DataModel that should be rendered

Method Detail

renderChart

public void renderChart(java.awt.Graphics2D g)

Finally renders the Object in the Graphics object.

Specified by:

renderChart in class AbstractChartRenderer

Parameters:

g - the Graphics2D object in which to render

drawline

private void drawline(java.awt.geom.AffineTransform yaxis1,
                      int set,
                      java.awt.Graphics2D g)

Performs the line drawing for a given data set if called

Parameters:

yaxis1 - the transform to be used

set - the dataset to draw

g - the graphics to be painted to

drawmarkers

private void drawmarkers(java.awt.geom.AffineTransform yaxis1,
                         int set,
                         java.awt.Graphics2D g)

Performs the drawing point markers for a given data set if called

Parameters:

yaxis1 - the transform to be used

set - the dataset to draw

g - the graphics to be painted to

getPreferredSize

public java.awt.Dimension getPreferredSize()

Returns the renderer's prefered size

Specified by:

getPreferredSize in interface Renderer

Overrides:

getPreferredSize in class AbstractChartRenderer

Returns:

a non-null Dimension object

setBounds

public void setBounds(java.awt.Rectangle bounds)

Sets the graphical bounds for this renderer

Specified by:

setBounds in interface Renderer

Overrides:

setBounds in class AbstractChartRenderer

Parameters:

bounds - the new bounds for the renderer.

getBounds

public java.awt.Rectangle getBounds()

Returns the graphical bounds for this renderer

Specified by:

getBounds in interface Renderer

Overrides:

getBounds in class AbstractChartRenderer

Returns:

the bounds of this renderer. If setBounds has not been called before, the bounds computed from getPreferredSize is returned.

render

public void render(java.awt.Graphics2D g)

Renders the plot to the specifed graphics object. Most work is done in the renderChart() routine.

Specified by:

render in interface Renderer

Overrides:

render in class AbstractChartRenderer

Parameters:

g - the Graphics2D object in which to render

setChartDataModel

public void setChartDataModel(ChartDataModel model)

Sets the ChartDataModel whose DataSets are rendered.

Overrides:

setChartDataModel in class AbstractChartRenderer

Parameters:

model - the ChartDataModel

getChartDataModel

public ChartDataModel getChartDataModel()

Returns the ChartDataModel whose DataSets are rendered.

Overrides:

getChartDataModel in class AbstractChartRenderer

Returns:

a ChartDataModel which contains the Chart's data

getCoordSystem

public CoordSystem getCoordSystem()

Returns the current CoordSystem.

Overrides:

getCoordSystem in class AbstractChartRenderer

setCoordSystem

public void setCoordSystem(CoordSystem cs)

Sets the CoordSystem which contains the AffineTransforms to translate into pixel space.

Overrides:

setCoordSystem in class AbstractChartRenderer

Parameters:

cs - the new CoordSystem

getTransform

public java.awt.geom.AffineTransform getTransform(int axis)

Returns the currently defined AffineTransform for any y-axis.

Overrides:

getTransform in class AbstractChartRenderer

Parameters:

axis - the y-axis to be used.

setRowColorModel

public void setRowColorModel(RowColorModel rcm)

Sets a RowColorModel to define the correlation of row titles and colors used for the Legend.

Overrides:

setRowColorModel in class AbstractChartRenderer

Parameters:

rcm - the RowColorModel

getRowColorModel

public RowColorModel getRowColorModel()

Returns the RowColorModel currently in use.

Overrides:

getRowColorModel in class AbstractChartRenderer

Returns:

a RowColorModel

fireDataUpdate

public void fireDataUpdate()

Clears all buffered transformation and drawing information

setAllowBuffer

public void setAllowBuffer(boolean value)

Sets whether the renderer can buffer data internally for faster drawing

Parameters:

value - true to allow drawing, false otherwise