git.gag.com Git - debian/openrocket/blob - src/net/sf/openrocket/optimization/rocketoptimization/parameters/MaximumAccelerationParameter.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.SimulationException;
  11 import net.sf.openrocket.simulation.exception.SimulationLaunchException;
  12 import net.sf.openrocket.simulation.listeners.system.ApogeeEndListener;
  13 import net.sf.openrocket.startup.Application;
  14 import net.sf.openrocket.unit.UnitGroup;
  15
  16 /**
  17  * An optimization parameter that computes the maximum acceleration during a simulated flight.
  18  *
  19  * @author Sampo Niskanen <sampo.niskanen@iki.fi>
  20  */
  21 public class MaximumAccelerationParameter implements OptimizableParameter {
  22
  23         private static final LogHelper log = Application.getLogger();
  24         private static final Translator trans = Application.getTranslator();
  25
  26         @Override
  27         public String getName() {
  28                 return trans.get("name");
  29         }
  30
  31         @Override
  32         public double computeValue(Simulation simulation) throws OptimizationException {
  33                 try {
  34                         log.debug("Running simulation to evaluate maximum acceleration");
  35                         simulation.simulate(new ApogeeEndListener());
  36                         double value = simulation.getSimulatedData().getBranch(0).getMaximum(FlightDataType.TYPE_ACCELERATION_TOTAL);
  37                         log.debug("Maximum acceleration was " + value);
  38                         return value;
  39                 } catch (MotorIgnitionException e) {
  40                         // A problem with motor ignition will cause optimization to fail
  41                         throw new OptimizationException(e);
  42                 } catch (SimulationLaunchException e) {
  43                         // Other launch exceptions result in zero velocity
  44                         return Double.NaN;
  45                 } catch (SimulationException e) {
  46                         // Other exceptions fail
  47                         throw new OptimizationException(e);
  48                 }
  49         }
  50
  51         @Override
  52         public UnitGroup getUnitGroup() {
  53                 return UnitGroup.UNITS_ACCELERATION;
  54         }
  55
  56 }