Package org.krysalis.jcharts.axisChart

Source Code of org.krysalis.jcharts.axisChart.PointChart

/***********************************************************************************************
* 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.PointChartProperties;
import org.krysalis.jcharts.properties.DataAxisProperties;

import java.awt.*;
import java.awt.geom.AffineTransform;
import java.awt.geom.Rectangle2D;


/*************************************************************************************
*
* @author Nathaniel Auvil
* @version $Id: PointChart.java,v 1.1 2003/05/17 16:56:57 nathaniel_auvil Exp $
************************************************************************************/
abstract class PointChart
{

  /********************************************************************************************
   * Draws the chart
   *
   * @param axisChart
   * @param iAxisChartDataSet
   *********************************************************************************************/
  static void render( AxisChart axisChart, IAxisChartDataSet iAxisChartDataSet )
  {
    Graphics2D g2d=axisChart.getGraphics2D();
    PointChartProperties pointChartProperties=(PointChartProperties) iAxisChartDataSet.getChartTypeProperties();

    //---Point Charts can not be horizontal so we know the y-axis is DataAxisProperties
    DataAxisProperties dataAxisProperties= (DataAxisProperties) axisChart.getAxisProperties().getYAxisProperties();
    IDataSeries iDataSeries= (IDataSeries) axisChart.getIAxisDataSeries();


    float xPosition=axisChart.getXAxis().getTickStart();
    float yPosition;

    //---when centering the shapes on the points, need x and y offset to do this
    double[] cornerXOffset=new double[ iAxisChartDataSet.getNumberOfDataSets() ];
    double[] cornerYOffset=new double[ iAxisChartDataSet.getNumberOfDataSets() ];


    //---get the original transform so can reset it.
    AffineTransform affineTransform=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++ )
    {
      rectangle=pointChartProperties.getShape( i ).getBounds2D();
      cornerXOffset[ i ]=rectangle.getWidth() / 2;
      cornerYOffset[ i ]=rectangle.getHeight() / 2;
    }

    g2d.setStroke( PointChartProperties.DEFAULT_POINT_BORDER_STROKE );

    //LOOP
    //---for each item in data set...
    for( int i=0; i < iAxisChartDataSet.getNumberOfDataItems(); i++ )
    {
      //LOOP
      //---for each data set
      for( int dataSetIndex=0; dataSetIndex < iAxisChartDataSet.getNumberOfDataSets(); dataSetIndex++ )
      {
        //---if the value is NaN, do not display a value
        if( Double.isNaN( iAxisChartDataSet.getValue( dataSetIndex, i ) ) )
        {
          continue;
        }

        yPosition= axisChart.getYAxis().computeAxisCoordinate( axisChart.getYAxis().getOrigin(),
                                             iAxisChartDataSet.getValue( dataSetIndex, i ),
                                             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( i ).getText();
          }
          else
          {
            label = null;
          }

          axisChart.getImageMap().addImageMapArea( new CircleMapArea( xPosition,
                                                  yPosition,
                                                  iAxisChartDataSet.getValue( dataSetIndex, i ),
                                                  label,
                                                  iAxisChartDataSet.getLegendLabel( dataSetIndex ) ) );
        }

        //---translate the Shape into position.
        g2d.translate( xPosition - cornerXOffset[ dataSetIndex ], yPosition - cornerYOffset[ dataSetIndex ] );

        g2d.setPaint( iAxisChartDataSet.getPaint( dataSetIndex ) );

        //---render the point
        if( pointChartProperties.getFillPointsFlag( dataSetIndex ) )
        {
          //---fill the point
          g2d.fill( pointChartProperties.getShape( dataSetIndex ) );

          //---if we are filling the points, see if we should outline the Shape
          if( pointChartProperties.getPointOutlinePaints( dataSetIndex ) != null )
          {
            g2d.setPaint( pointChartProperties.getPointOutlinePaints( dataSetIndex ) );
            g2d.draw( pointChartProperties.getShape( dataSetIndex ) );
          }
        }
        else
        {
          //---if we are NOT filling the points, use the Paint specified with the DataSet to outline.
          g2d.draw( pointChartProperties.getShape( dataSetIndex ) );
        }

        g2d.setTransform( affineTransform );
      }

      //---move right to the next x-axis scale item
      xPosition+=axisChart.getXAxis().getScalePixelWidth();
    }
  }
}
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