/***********************************************************************************************
* 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.IAxisChartDataSet;
import org.krysalis.jcharts.chartData.interfaces.IDataSeries;
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: LineChart.java,v 1.3 2003/09/26 00:44:02 nathaniel_auvil Exp $
************************************************************************************/
abstract class LineChart
{
/********************************************************************************************
* Draws the chart
*
* @param axisChart
* @param iAxisChartDataSet
* @throws PropertyException
*********************************************************************************************/
static void render( AxisChart axisChart, IAxisChartDataSet iAxisChartDataSet ) throws PropertyException
{
Graphics2D g2d=axisChart.getGraphics2D();
LineChartProperties lineChartProperties=(LineChartProperties) iAxisChartDataSet.getChartTypeProperties();
lineChartProperties.validate( iAxisChartDataSet );
//DataAxisProperties dataAxisProperties= (DataAxisProperties) axisChart.getAxisProperties().getYAxisProperties();
IDataSeries iDataSeries= (IDataSeries) axisChart.getIAxisDataSeries();
//---cache the computed values
float[][] yAxisCoordinates=new float[ iAxisChartDataSet.getNumberOfDataSets() ][ iAxisChartDataSet.getNumberOfDataItems() ];
//---need this for image map calculation
float xMapCoordinate=axisChart.getXAxis().getTickStart();
//LOOP
for( int j=0; j < iAxisChartDataSet.getNumberOfDataItems(); j++ )
{
//LOOP
for( int i=0; i < yAxisCoordinates.length; i++ )
{
if( iAxisChartDataSet.getValue( i, j ) != Double.NaN )
{
// Dual Y axis changes integrated CMC 25Aug03
//yAxisCoordinates[ i ][ j ]= axisChart.getYAxis().computeAxisCoordinate( axisChart.getYAxis().getOrigin(),
// iAxisChartDataSet.getValue( i, j ),
// axisChart.getYAxis().getScaleCalculator().getMinValue() );
// The coordinates of the line charts are drawn with the default scale and
// multiplicate with the second scale for the right axis (by default equal 1)
// if the second scale at the right is unchanged then there will be no impact
yAxisCoordinates[ i ][ j ]= axisChart.getYAxis().computeAxisCoordinate( axisChart.getYAxis().getOrigin(),
iAxisChartDataSet.getValue( i, j )*axisChart.axisProperties.getYAxisProperties().getSecondScaleRight(),
axisChart.getYAxis().getScaleCalculator().getMinValue() );
//---if we are generating an ImageMap, store the image coordinates
if( axisChart.getGenerateImageMapFlag() )
{
String label;
if( axisChart.getXAxis().getAxisLabelsGroup() != null )
{
label = axisChart.getXAxis().getAxisLabelsGroup().getTextTag( j ).getText();
}
else
{
label = null;
}
axisChart.getImageMap().addImageMapArea( new CircleMapArea( xMapCoordinate,
yAxisCoordinates[ i ][ j ],
iAxisChartDataSet.getValue( i, j ),
label,
iAxisChartDataSet.getLegendLabel( i ) ) );
}
}
else
{
yAxisCoordinates[ i ][ j ]=Float.NaN;
}
}
xMapCoordinate+=axisChart.getXAxis().getScalePixelWidth();
}
AffineTransform originalTransform=null;
double[] cornerXOffset=null;
double[] cornerYOffset=null;
//---check if there are any points to display
if( lineChartProperties.getShapes() != null )
{
//---when centering the shapes on the points, need x and y offset to do this
cornerXOffset=new double[ iAxisChartDataSet.getNumberOfDataSets() ];
cornerYOffset=new double[ iAxisChartDataSet.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 < iAxisChartDataSet.getNumberOfDataSets(); i++ )
{
if( lineChartProperties.getShapes()[ i ] != null )
{
rectangle=lineChartProperties.getShapes()[ i ].getBounds2D();
cornerXOffset[ i ]=rectangle.getWidth() / 2;
cornerYOffset[ i ]=rectangle.getHeight() / 2;
}
}
}
//---init for first segment
Line2D.Float line=new Line2D.Float( axisChart.getXAxis().getTickStart(),
yAxisCoordinates[ 0 ][ 0 ],
axisChart.getXAxis().getTickStart(),
yAxisCoordinates[ 0 ][ 0 ] );
//---make sure not plotting a chart with only one data point.
if( yAxisCoordinates[ 0 ].length > 1 )
{
line.y2= yAxisCoordinates[ 0 ][ 1 ];
}
//LOOP
//---draw each line to the image
for( int i=0; i < yAxisCoordinates.length; i++ )
{
line.x1=axisChart.getXAxis().getTickStart();
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.x2+=axisChart.getXAxis().getScalePixelWidth();
line.x1=line.x2;
line.y1=yAxisCoordinates[ i ][ j ];
line.y2=yAxisCoordinates[ i ][ j ];
continue;
}
line.x2+=axisChart.getXAxis().getScalePixelWidth();
line.y2=yAxisCoordinates[ i ][ j ];
g2d.setPaint( iAxisChartDataSet.getPaint( i ) );
g2d.setStroke( lineChartProperties.getLineStrokes()[ i ] );
g2d.draw( line );
//---plot the Point
if( lineChartProperties.getShapes()[ i ] != null )
{
//---translate the Shape into position.
g2d.translate( line.x1 - cornerXOffset[ i ], line.y1 - cornerYOffset[ i ] );
g2d.setPaint( iAxisChartDataSet.getPaint( i ) );
g2d.fill( lineChartProperties.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 ] ) ) && ( lineChartProperties.getShapes()[ i ] != null ) )
{
//---translate the Shape into position.
g2d.translate( line.x1 - cornerXOffset[ i ], line.y1 - cornerYOffset[ i ] );
g2d.setPaint( iAxisChartDataSet.getPaint( i ) );
g2d.fill( lineChartProperties.getShapes()[ i ] );
//---translate back to the original position
g2d.setTransform( originalTransform );
}
line.x2+=axisChart.getXAxis().getScalePixelWidth();
line.x1=line.x2;
}
}
//---put the last shape on the line
if( ( !Float.isNaN( yAxisCoordinates[ i ][ yAxisCoordinates[ i ].length - 1 ] ) ) && ( lineChartProperties.getShapes()[ i ] != null ) )
{
//---translate the Shape into position.
g2d.translate( line.x2 - cornerXOffset[ i ], line.y2 - cornerYOffset[ i ] );
g2d.setPaint( iAxisChartDataSet.getPaint( i ) );
g2d.fill( lineChartProperties.getShapes()[ i ] );
//---translate back to the original position
g2d.setTransform( originalTransform );
}
}
}
}