git.gag.com Git - debian/openrocket/blob - src/net/sf/openrocket/unit/CaliberUnit.java

   1 package net.sf.openrocket.unit;
   2
   3 import java.util.Collection;
   4 import java.util.Collections;
   5 import java.util.Iterator;
   6
   7 import javax.swing.event.ChangeEvent;
   8 import javax.swing.event.ChangeListener;
   9
  10 import net.sf.openrocket.rocketcomponent.Configuration;
  11 import net.sf.openrocket.rocketcomponent.Rocket;
  12 import net.sf.openrocket.rocketcomponent.RocketComponent;
  13 import net.sf.openrocket.rocketcomponent.SymmetricComponent;
  14 import net.sf.openrocket.util.MathUtil;
  15
  16
  17 public class CaliberUnit extends GeneralUnit {
  18
  19         public static final double DEFAULT_CALIBER = 0.01;
  20
  21         private final Configuration configuration;
  22         private final Rocket rocket;
  23
  24         private double caliber = -1;
  25
  26
  27         /* Listener for rocket and configuration, resets the caliber to -1. */
  28         private final ChangeListener listener = new ChangeListener() {
  29                 @Override
  30                 public void stateChanged(ChangeEvent e) {
  31                         caliber = -1;
  32                 }
  33         };
  34
  35
  36
  37         public CaliberUnit(Configuration configuration) {
  38                 super(1.0, "cal");
  39                 this.configuration = configuration;
  40
  41                 if (configuration == null) {
  42                         this.rocket = null;
  43                 } else {
  44                         this.rocket = configuration.getRocket();
  45                         configuration.addChangeListener(listener);
  46                 }
  47         }
  48
  49         public CaliberUnit(Rocket rocket) {
  50                 super(1.0, "cal");
  51                 this.configuration = null;
  52                 this.rocket = rocket;
  53                 if (rocket != null) {
  54                         rocket.addChangeListener(listener);
  55                 }
  56         }
  57
  58
  59         @Override
  60         public double fromUnit(double value) {
  61                 if (caliber < 0)
  62                         calculateCaliber();
  63
  64                 return value * caliber;
  65         }
  66
  67         @Override
  68         public double toUnit(double value) {
  69                 if (caliber < 0)
  70                         calculateCaliber();
  71
  72                 return value / caliber;
  73         }
  74
  75
  76         // TODO: HIGH:  Check caliber calculation method...
  77         private void calculateCaliber() {
  78                 caliber = 0;
  79
  80                 Iterator<RocketComponent> iterator;
  81                 if (configuration != null) {
  82                         iterator = configuration.iterator();
  83                 } else if (rocket != null) {
  84                         iterator = rocket.deepIterator();
  85                 } else {
  86                         Collection<RocketComponent> set = Collections.emptyList();
  87                         iterator = set.iterator();
  88                 }
  89
  90                 while (iterator.hasNext()) {
  91                         RocketComponent c = iterator.next();
  92                         if (c instanceof SymmetricComponent) {
  93                                 double r1 = ((SymmetricComponent)c).getForeRadius() * 2;
  94                                 double r2 = ((SymmetricComponent)c).getAftRadius() * 2;
  95                                 caliber = MathUtil.max(caliber, r1, r2);
  96                         }
  97                 }
  98
  99                 if (caliber <= 0)
 100                         caliber = DEFAULT_CALIBER;
 101         }
 102 }