/***********************************************************************************************
* Copyright 2002 (C) Nathaniel G. Auvil. All Rights Reserved.
*
* Redistribution and use of this software and associated documentation ("Software"), with or
* without modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain copyright statements and notices.
* Redistributions must also contain a copy of this document.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list of
* conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* 3. The name "jCharts" or "Nathaniel G. Auvil" must not be used to endorse or promote
* products derived from this Software without prior written permission of Nathaniel G.
* Auvil. For written permission, please contact nathaniel_auvil@users.sourceforge.net
*
* 4. Products derived from this Software may not be called "jCharts" nor may "jCharts" appear
* in their names without prior written permission of Nathaniel G. Auvil. jCharts is a
* registered trademark of Nathaniel G. Auvil.
*
* 5. Due credit should be given to the jCharts Project (http://jcharts.sourceforge.net/).
*
* THIS SOFTWARE IS PROVIDED BY Nathaniel G. Auvil AND CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* jCharts OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
************************************************************************************************/
package org.krysalis.jcharts.axisChart;
import org.krysalis.jcharts.chartData.interfaces.*;
import org.krysalis.jcharts.imageMap.CircleMapArea;
import org.krysalis.jcharts.properties.*;
import com.google.code.appengine.awt.*;
import com.google.code.appengine.awt.geom.*;
/*************************************************************************************
*
* @author Nathaniel Auvil
* @version $Id: ScatterPlotChart.java,v 1.2 2003/11/02 13:34:17 nathaniel_auvil Exp $
************************************************************************************/
abstract class ScatterPlotChart
{
/********************************************************************************************
* Draws the chart
*
* @param scatterPlotAxisChart
* @param iScatterPlotDataSet
*********************************************************************************************/
static void render( ScatterPlotAxisChart scatterPlotAxisChart, IScatterPlotDataSet iScatterPlotDataSet )
{
//---cache the computed values
float[][] xAxisCoordinates = new float[ iScatterPlotDataSet.getNumberOfDataSets() ][ iScatterPlotDataSet.getNumberOfDataItems() ];
float[][] yAxisCoordinates = new float[ iScatterPlotDataSet.getNumberOfDataSets() ][ iScatterPlotDataSet.getNumberOfDataItems() ];
//System.out.println( "x origin= " + scatterPlotAxisChart.getXAxis().getOrigin() + " y origin= " + scatterPlotAxisChart.getYAxis().getOrigin() );
//LOOP
for( int index = 0; index < iScatterPlotDataSet.getNumberOfDataItems(); index++ )
{
//LOOP
for( int dataSet = 0; dataSet < yAxisCoordinates.length; dataSet++ )
{
if( iScatterPlotDataSet.getValue( dataSet, index ) != null )
{
xAxisCoordinates[ dataSet ][ index ] = scatterPlotAxisChart.getXAxis().computeAxisCoordinate( scatterPlotAxisChart.getXAxis().getOrigin(),
iScatterPlotDataSet.getValue( dataSet, index ).getX(),
scatterPlotAxisChart.getXAxis().getScaleCalculator().getMinValue() );
yAxisCoordinates[ dataSet ][ index ] = scatterPlotAxisChart.getYAxis().computeAxisCoordinate( scatterPlotAxisChart.getYAxis().getOrigin(),
iScatterPlotDataSet.getValue( dataSet, index ).getY(),
scatterPlotAxisChart.getYAxis().getScaleCalculator().getMinValue() );
//System.out.println( "x= " + xAxisCoordinates[ dataSet ][ index ] + " y= " + yAxisCoordinates[ dataSet ][ index ] );
//---if we are generating an ImageMap, store the image coordinates
if( scatterPlotAxisChart.getGenerateImageMapFlag() )
{
scatterPlotAxisChart.getImageMap().addImageMapArea( new CircleMapArea( xAxisCoordinates[ dataSet ][ index ],
yAxisCoordinates[ dataSet ][ index ],
iScatterPlotDataSet.getValue( dataSet, index ),
iScatterPlotDataSet.getLegendLabel( dataSet ) ) );
}
}
else
{
xAxisCoordinates[ dataSet ][ index ] = Float.NaN;
yAxisCoordinates[ dataSet ][ index ] = Float.NaN;
}
}
}
ScatterPlotProperties scatterPlotProperties = (ScatterPlotProperties) iScatterPlotDataSet.getChartTypeProperties();
//DataAxisProperties xAxisProperties = (DataAxisProperties) scatterPlotAxisChart.getAxisProperties().getXAxisProperties();
//DataAxisProperties yAxisProperties = (DataAxisProperties) scatterPlotAxisChart.getAxisProperties().getYAxisProperties();
Graphics2D g2d = scatterPlotAxisChart.getGraphics2D();
AffineTransform originalTransform = null;
double[] cornerXOffset = null;
double[] cornerYOffset = null;
//---check if there are any points to display
if( scatterPlotProperties.getShapes() != null )
{
//---when centering the shapes on the points, need x and y offset to do this
cornerXOffset = new double[ iScatterPlotDataSet.getNumberOfDataSets() ];
cornerYOffset = new double[ iScatterPlotDataSet.getNumberOfDataSets() ];
//---get the original transform so can reset it.
originalTransform = g2d.getTransform();
Rectangle2D rectangle;
//LOOP
//---pre-compute the dimensions of each Shape so do not do it in loop.
for( int i = 0; i < iScatterPlotDataSet.getNumberOfDataSets(); i++ )
{
if( scatterPlotProperties.getShapes()[ i ] != null )
{
rectangle = scatterPlotProperties.getShapes()[ i ].getBounds2D();
cornerXOffset[ i ] = rectangle.getWidth() / 2;
cornerYOffset[ i ] = rectangle.getHeight() / 2;
}
}
}
//---init for first segment
Line2D.Float line = new Line2D.Float( xAxisCoordinates[ 0 ][ 0 ],
yAxisCoordinates[ 0 ][ 0 ],
xAxisCoordinates[ 0 ][ 1 ],
yAxisCoordinates[ 0 ][ 1 ] );
//---make sure not plotting a chart with only one data point.
if( yAxisCoordinates[ 0 ].length > 1 )
{
//todo what is this for?
line.y2 = yAxisCoordinates[ 0 ][ 1 ];
}
//LOOP
//---draw each line to the image
for( int i = 0; i < yAxisCoordinates.length; i++ )
{
line.x1 = xAxisCoordinates[ i ][ 0 ];
line.y1 = yAxisCoordinates[ i ][ 0 ];
line.x2 = line.x1;
//LOOP
for( int j = 1; j < yAxisCoordinates[ 0 ].length; j++ )
{
//---if current point on line should be drawn
if( !Float.isNaN( yAxisCoordinates[ i ][ j ] ) )
{
//---if the previous point was not drawn, no line
if( Float.isNaN( yAxisCoordinates[ i ][ j - 1 ] ) )
{
line.x1 = xAxisCoordinates[ i ][ j ];
line.y1 = yAxisCoordinates[ i ][ j ];
line.x2 = xAxisCoordinates[ i ][ j ];
line.y2 = yAxisCoordinates[ i ][ j ];
continue;
}
line.x2 = xAxisCoordinates[ i ][ j ];
line.y2 = yAxisCoordinates[ i ][ j ];
g2d.setPaint( iScatterPlotDataSet.getPaint( i ) );
g2d.setStroke( scatterPlotProperties.getLineStrokes()[ i ] );
g2d.draw( line );
//---plot the Point
if( scatterPlotProperties.getShapes()[ i ] != null )
{
//---translate the Shape into position.
g2d.translate( line.x1 - cornerXOffset[ i ], line.y1 - cornerYOffset[ i ] );
g2d.setPaint( iScatterPlotDataSet.getPaint( i ) );
g2d.fill( scatterPlotProperties.getShapes()[ i ] );
//---translate back to the original position
g2d.setTransform( originalTransform );
}
line.x1 = line.x2;
line.y1 = line.y2;
}
else
{
if( (!Float.isNaN( yAxisCoordinates[ i ][ j - 1 ] )) && ( scatterPlotProperties.getShapes()[ i ] != null ) )
{
//---translate the Shape into position.
g2d.translate( line.x1 - cornerXOffset[ i ], line.y1 - cornerYOffset[ i ] );
g2d.setPaint( iScatterPlotDataSet.getPaint( i ) );
g2d.fill( scatterPlotProperties.getShapes()[ i ] );
//---translate back to the original position
g2d.setTransform( originalTransform );
}
line.x2 = scatterPlotAxisChart.getXAxis().getScalePixelWidth();
line.x1 = line.x2;
}
}
//---put the last shape on the line
if( (!Float.isNaN( yAxisCoordinates[ i ][ yAxisCoordinates[ i ].length - 1 ] )) && ( scatterPlotProperties.getShapes()[ i ] != null ) )
{
//---translate the Shape into position.
g2d.translate( line.x2 - cornerXOffset[ i ], line.y2 - cornerYOffset[ i ] );
g2d.setPaint( iScatterPlotDataSet.getPaint( i ) );
g2d.fill( scatterPlotProperties.getShapes()[ i ] );
//---translate back to the original position
g2d.setTransform( originalTransform );
}
}
}
}