git.gag.com Git - debian/openrocket/blob - android/src/net/sf/openrocket/android/simulation/SimulationChart.java

   1 /**\r
   2  * Copyright (C) 2009, 2010 SC 4ViewSoft SRL\r
   3  *  \r
   4  * Licensed under the Apache License, Version 2.0 (the "License");\r
   5  * you may not use this file except in compliance with the License.\r
   6  * You may obtain a copy of the License at\r
   7  *  \r
   8  *      http://www.apache.org/licenses/LICENSE-2.0\r
   9  *  \r
  10  * Unless required by applicable law or agreed to in writing, software\r
  11  * distributed under the License is distributed on an "AS IS" BASIS,\r
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
  13  * See the License for the specific language governing permissions and\r
  14  * limitations under the License.\r
  15  */\r
  16 package net.sf.openrocket.android.simulation;\r
  17 \r
  18 import java.io.Serializable;\r
  19 import java.util.ArrayList;\r
  20 import java.util.List;\r
  21 \r
  22 import net.sf.openrocket.android.util.AndroidLogWrapper;\r
  23 import net.sf.openrocket.document.OpenRocketDocument;\r
  24 import net.sf.openrocket.document.Simulation;\r
  25 import net.sf.openrocket.simulation.FlightDataBranch;\r
  26 import net.sf.openrocket.simulation.FlightDataType;\r
  27 import net.sf.openrocket.unit.Unit;\r
  28 \r
  29 import org.achartengine.chart.LineChart;\r
  30 import org.achartengine.chart.PointStyle;\r
  31 import org.achartengine.chart.XYChart;\r
  32 import org.achartengine.model.XYMultipleSeriesDataset;\r
  33 import org.achartengine.model.XYSeries;\r
  34 import org.achartengine.renderer.XYMultipleSeriesRenderer;\r
  35 import org.achartengine.renderer.XYSeriesRenderer;\r
  36 \r
  37 import android.graphics.Color;\r
  38 import android.graphics.Paint.Align;\r
  39 \r
  40 /**\r
  41  * This is really a flyweight object so we can serialize the\r
  42  * values behind a simulation chart.  Since OpenRocketDocument, FlightDataBranch,\r
  43  * FlightDataType, Unit and all the other underlying types are not serializable,\r
  44  * we have to resort to persisting just the bare minimum of information.\r
  45  * \r
  46  * This also means without further changes to FlightDataType, we cannot actually\r
  47  * restore the displayed series.\r
  48  * \r
  49  * TODO make FlightDataBranch serializable or at least reconstructable from\r
  50  * from some the name.\r
  51  * \r
  52  */\r
  53 public class SimulationChart implements Serializable {\r
  54         \r
  55         private final int simulationIndex;\r
  56         private transient FlightDataType series1;\r
  57         private transient FlightDataType series2;\r
  58         \r
  59         // Define 4 different colors and point styles to use for the series.\r
  60         // For now only 2 series are supported though.\r
  61         private final static int[] colors = new int[] { Color.BLUE, Color.YELLOW, Color.GREEN, Color.RED };\r
  62         private final static PointStyle[] styles = new PointStyle[] { PointStyle.CIRCLE, PointStyle.DIAMOND,\r
  63                 PointStyle.TRIANGLE, PointStyle.SQUARE };\r
  64 \r
  65         public SimulationChart(int simulationIndex) {\r
  66                 super();\r
  67                 this.simulationIndex = simulationIndex;\r
  68         }\r
  69 \r
  70         private static String formatFlightDataTypeAxisLabel( FlightDataType fdt ) {\r
  71                 return fdt.getName() + " (" + fdt.getUnitGroup().getDefaultUnit().toString() + ")";\r
  72         }\r
  73 \r
  74         public void setSeries1(FlightDataType series1) {\r
  75                 this.series1 = series1;\r
  76         }\r
  77 \r
  78         public void setSeries2(FlightDataType series2) {\r
  79                 this.series2 = series2;\r
  80         }\r
  81 \r
  82         public FlightDataBranch getFlightDataBranch( OpenRocketDocument rocketDocument ) {\r
  83                 Simulation sim = rocketDocument.getSimulation(simulationIndex);\r
  84                 FlightDataBranch flightDataBranch = sim.getSimulatedData().getBranch(0);\r
  85                 return flightDataBranch;\r
  86         }\r
  87         /**\r
  88          * Executes the chart demo.\r
  89          * \r
  90          * @param context the context\r
  91          * @return the built intent\r
  92          */\r
  93         public XYChart buildChart(OpenRocketDocument rocketDocument) {\r
  94 \r
  95                 Simulation sim = rocketDocument.getSimulation(simulationIndex);\r
  96                 FlightDataBranch flightDataBranch = sim.getSimulatedData().getBranch(0);\r
  97                 FlightDataType time = FlightDataType.TYPE_TIME;\r
  98                 if (series1== null) {\r
  99                         series1 = flightDataBranch.getTypes()[1];\r
 100                 }\r
 101                 if (series2== null) {\r
 102                         series2 = flightDataBranch.getTypes()[2];\r
 103                 }\r
 104 \r
 105                 /*\r
 106                  * TODO -\r
 107                  * Figure out why you can pan all over the place even where there are no visible points.\r
 108                  */\r
 109                 int seriesCount = 2;\r
 110                 // if the same series is selected twice, only plot it once.\r
 111                 if ( series1 == series2 ) {\r
 112                         seriesCount = 1;\r
 113                 }\r
 114 \r
 115                 XYMultipleSeriesRenderer renderer = new XYMultipleSeriesRenderer(seriesCount);\r
 116 \r
 117                 renderer.setAxisTitleTextSize(16);\r
 118                 renderer.setChartTitleTextSize(20);\r
 119                 renderer.setLabelsTextSize(15);\r
 120                 renderer.setLegendTextSize(15);\r
 121                 renderer.setPointSize(5f);\r
 122                 renderer.setXLabels(10);\r
 123                 renderer.setYLabels(10);\r
 124                 renderer.setShowGrid(true);\r
 125                 renderer.setZoomButtonsVisible(true);\r
 126                 renderer.setChartTitle(sim.getName());\r
 127 \r
 128                 renderer.setMargins(new int[] { 50, 30, 0, 20 });\r
 129                 {\r
 130                         for (int i = 0; i < seriesCount; i++) {\r
 131                                 XYSeriesRenderer r = new XYSeriesRenderer();\r
 132                                 r.setColor(colors[i]);\r
 133                                 r.setPointStyle(styles[i]);\r
 134                                 r.setFillPoints(true);\r
 135                                 renderer.addSeriesRenderer(r);\r
 136                                 // setting the YAximMin to 0 locks the origins.\r
 137                                 renderer.setYAxisMin(0.0, i);\r
 138                         }\r
 139                 }\r
 140 \r
 141                 renderer.setXTitle(formatFlightDataTypeAxisLabel(time));\r
 142                 renderer.setXLabelsAlign(Align.RIGHT);\r
 143 \r
 144                 renderer.setYTitle(formatFlightDataTypeAxisLabel(series1),0);\r
 145                 renderer.setYLabelsAlign(Align.RIGHT,0);\r
 146 \r
 147                 if ( seriesCount > 1 ) {\r
 148                         renderer.setYTitle(formatFlightDataTypeAxisLabel(series2), 1);\r
 149                         renderer.setYAxisAlign(Align.RIGHT, 1);\r
 150                         renderer.setYLabelsAlign(Align.LEFT, 1);\r
 151                 }\r
 152 \r
 153                 renderer.setAxesColor(Color.LTGRAY);\r
 154                 renderer.setLabelsColor(Color.LTGRAY);\r
 155 \r
 156                 XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset();\r
 157 \r
 158                 List<Double> timevalues = flightDataBranch.get(time);\r
 159                 List<Double> series1values = new ArrayList<Double>( flightDataBranch.get(series1).size() );\r
 160                 {\r
 161                         Unit u = series1.getUnitGroup().getDefaultUnit();\r
 162                         for( Double d: flightDataBranch.get(series1) ) {\r
 163                                 series1values.add( u.toUnit(d));\r
 164                         }\r
 165                 }\r
 166 \r
 167                 // compute the axis limits using timevalues and series1values.\r
 168                 double xmin = 0;\r
 169                 double ymin = 0;\r
 170                 renderer.setXAxisMin(xmin);\r
 171                 renderer.setYAxisMin(ymin);\r
 172 \r
 173                 double ymax = computeMaxValueWithPadding( series1values );\r
 174                 double xmax = Math.ceil( timevalues.get( timevalues.size()-1));\r
 175                 \r
 176                 AndroidLogWrapper.d(SimulationChart.class,"ymax = " + ymax);\r
 177                 renderer.setXAxisMax(xmax);\r
 178                 renderer.setYAxisMax(ymax);\r
 179 \r
 180                 // These configurations don't really work well just now.\r
 181                 //renderer.setPanLimits(new double[] { xmin, xmax, ymin, ymax });\r
 182                 //renderer.setZoomLimits(new double[] { xmin, xmax, ymin, ymax });\r
 183 \r
 184                 // Add first series\r
 185                 addXYSeries(dataset, series1.getName(), timevalues, series1values, 0);\r
 186 \r
 187                 if ( seriesCount > 1 ) {\r
 188                         // Add second series\r
 189                         List<Double> series2values = new ArrayList<Double>( flightDataBranch.get(series2).size() );\r
 190                         {\r
 191                                 Unit u = series2.getUnitGroup().getDefaultUnit();\r
 192                                 for( Double d: flightDataBranch.get(series2) ) {\r
 193                                         series2values.add( u.toUnit(d));\r
 194                                 }\r
 195                         }\r
 196 \r
 197                         addXYSeries(dataset, series2.getName(), timevalues, series2values, 1);\r
 198                 }\r
 199                 XYChart chart = new LineChart(dataset, renderer);\r
 200                 \r
 201                 return chart;\r
 202         }\r
 203 \r
 204         private static void addXYSeries(XYMultipleSeriesDataset dataset, String titles, List<Double> xValues, List<Double> yValues, int scale) {\r
 205                 XYSeries series = new XYSeries(titles, scale);\r
 206                 int datasize = xValues.size();\r
 207                 for( int i = 0; i<datasize; i++ ) {\r
 208                         series.add(xValues.get(i), yValues.get(i));\r
 209                 }\r
 210                 dataset.addSeries(series);\r
 211 \r
 212         }\r
 213 \r
 214         private static double computeMaxValueWithPadding( List<Double> list ) {\r
 215                 double max = list.get(0);\r
 216                 for( double v : list ) {\r
 217                         if ( v > max ) {\r
 218                                 max = v;\r
 219                         }\r
 220                 }\r
 221                 if ( max <= 0 ) return 1.0;\r
 222 \r
 223                 // Do something stupid.\r
 224                 // return:\r
 225                 //  10 if max <= 10\r
 226                 //  next 10 if 10 < max < 1000\r
 227                 //  next 100 if 1000 < max < 10,000\r
 228                 //  next 1000 if max >= 10,000\r
 229                 double numdigits = Math.floor(Math.log10(max));\r
 230                 \r
 231                 if ( numdigits <= 1.0 ) {\r
 232                         return 10.0;\r
 233                 } else if ( numdigits <= 3.0 ) {\r
 234                         return 10.0 * ( Math.ceil( max/10.0));\r
 235                 } else if ( numdigits <= 4.0 ) {\r
 236                         return 100.0 * ( Math.ceil( max/ 100.0) );\r
 237                 } else {\r
 238                         return 1000.0 * ( Math.ceil( max / 1000.0 ));\r
 239                 }\r
 240                 \r
 241         }\r
 242         \r
 243 }\r