git.gag.com Git - debian/openrocket/blob - src/net/sf/openrocket/optimization/rocketoptimization/parameters/LandingDistanceParameter.java

   1 package net.sf.openrocket.optimization.rocketoptimization.parameters;
   2
   3 import net.sf.openrocket.document.Simulation;
   4 import net.sf.openrocket.l10n.Translator;
   5 import net.sf.openrocket.logging.LogHelper;
   6 import net.sf.openrocket.optimization.general.OptimizationException;
   7 import net.sf.openrocket.optimization.rocketoptimization.OptimizableParameter;
   8 import net.sf.openrocket.simulation.FlightDataType;
   9 import net.sf.openrocket.simulation.exception.MotorIgnitionException;
  10 import net.sf.openrocket.simulation.exception.SimulationCancelledException;
  11 import net.sf.openrocket.simulation.exception.SimulationException;
  12 import net.sf.openrocket.simulation.exception.SimulationLaunchException;
  13 import net.sf.openrocket.simulation.listeners.system.InterruptListener;
  14 import net.sf.openrocket.startup.Application;
  15 import net.sf.openrocket.unit.UnitGroup;
  16
  17 /**
  18  * An optimization parameter that computes the distance where a rocket lands.
  19  *
  20  * @author Sampo Niskanen <sampo.niskanen@iki.fi>
  21  */
  22 public class LandingDistanceParameter implements OptimizableParameter {
  23
  24         private static final LogHelper log = Application.getLogger();
  25         private static final Translator trans = Application.getTranslator();
  26
  27         @Override
  28         public String getName() {
  29                 return trans.get("name");
  30         }
  31
  32         @Override
  33         public double computeValue(Simulation simulation) throws OptimizationException, InterruptedException {
  34                 try {
  35                         log.debug("Running simulation to evaluate rocket landing distance");
  36                         simulation.simulate(new InterruptListener());
  37                         double value = simulation.getSimulatedData().getBranch(0).getLast(FlightDataType.TYPE_POSITION_XY);
  38                         log.debug("Landing distance was " + value);
  39                         return value;
  40                 } catch (MotorIgnitionException e) {
  41                         // A problem with motor ignition will cause optimization to fail
  42                         throw new OptimizationException(e);
  43                 } catch (SimulationLaunchException e) {
  44                         // Other launch exceptions result in zero altitude
  45                         return Double.NaN;
  46                 } catch (SimulationCancelledException e) {
  47                         throw (InterruptedException) new InterruptedException("Optimization was interrupted").initCause(e);
  48                 } catch (SimulationException e) {
  49                         // Other exceptions fail
  50                         throw new OptimizationException(e);
  51                 }
  52         }
  53
  54         @Override
  55         public UnitGroup getUnitGroup() {
  56                 return UnitGroup.UNITS_DISTANCE;
  57         }
  58
  59 }