git.gag.com Git - debian/openrocket/blob - src/net/sf/openrocket/database/Databases.java

   1 package net.sf.openrocket.database;
   2
   3 import java.io.File;
   4 import java.io.IOException;
   5 import java.util.ArrayList;
   6
   7 import net.sf.openrocket.file.MotorLoader;
   8 import net.sf.openrocket.material.Material;
   9 import net.sf.openrocket.rocketcomponent.Motor;
  10 import net.sf.openrocket.util.MathUtil;
  11
  12
  13 /**
  14  * A class that contains single instances of {@link Database} for specific purposes.
  15  *
  16  * @author Sampo Niskanen <sampo.niskanen@iki.fi>
  17  */
  18 public class Databases {
  19
  20         /* Static implementations of specific databases: */
  21         /**
  22          * The motor database.
  23          */
  24         public static final Database<Motor> MOTOR = new Database<Motor>(new MotorLoader());
  25
  26
  27         /**
  28          * A database of bulk materials (with bulk densities).
  29          */
  30         public static final Database<Material> BULK_MATERIAL = new Database<Material>();
  31         /**
  32          * A database of surface materials (with surface densities).
  33          */
  34         public static final Database<Material> SURFACE_MATERIAL = new Database<Material>();
  35         /**
  36          * A database of linear material (with length densities).
  37          */
  38         public static final Database<Material> LINE_MATERIAL = new Database<Material>();
  39
  40
  41
  42         // TODO: HIGH: loading the thrust curves and other databases
  43         static {
  44
  45                 try {
  46                         MOTOR.loadJarDirectory("datafiles/thrustcurves/", ".*\\.[eE][nN][gG]$");
  47                 } catch (IOException e) {
  48                         System.out.println("Could not read thrust curves from JAR: "+e.getMessage());
  49
  50                         try {
  51                                 MOTOR.loadDirectory(new File("datafiles/thrustcurves/"),".*\\.[eE][nN][gG]$");
  52                         } catch (IOException e1) {
  53                                 System.out.println("Could not read thrust curves from directory either.");
  54                                 throw new RuntimeException(e1);
  55                         }
  56                 }
  57         }
  58
  59         // TODO: HIGH: Move materials into data files
  60         static {
  61
  62                 BULK_MATERIAL.add(new Material.Bulk("Acrylic",          1190));
  63                 BULK_MATERIAL.add(new Material.Bulk("Balsa",             170));
  64                 BULK_MATERIAL.add(new Material.Bulk("Birch",             670));
  65                 BULK_MATERIAL.add(new Material.Bulk("Cardboard",         680));
  66                 BULK_MATERIAL.add(new Material.Bulk("Carbon fiber",     1780));
  67                 BULK_MATERIAL.add(new Material.Bulk("Cork",                      240));
  68                 BULK_MATERIAL.add(new Material.Bulk("Fiberglass",       1850));
  69                 BULK_MATERIAL.add(new Material.Bulk("Kraft phenolic",950));
  70                 BULK_MATERIAL.add(new Material.Bulk("Maple",             755));
  71                 BULK_MATERIAL.add(new Material.Bulk("Paper (office)",820));
  72                 BULK_MATERIAL.add(new Material.Bulk("Pine",                      530));
  73                 BULK_MATERIAL.add(new Material.Bulk("Plywood (birch)",630));
  74                 BULK_MATERIAL.add(new Material.Bulk("Polycarbonate (Lexan)",1200));
  75                 BULK_MATERIAL.add(new Material.Bulk("Polystyrene",  1050));
  76                 BULK_MATERIAL.add(new Material.Bulk("PVC",                      1390));
  77                 BULK_MATERIAL.add(new Material.Bulk("Spruce",            450));
  78                 BULK_MATERIAL.add(new Material.Bulk("Quantum tubing",1050));
  79
  80                 SURFACE_MATERIAL.add(new Material.Surface("Ripstop nylon",                      0.067));
  81                 SURFACE_MATERIAL.add(new Material.Surface("Mylar",                                      0.021));
  82                 SURFACE_MATERIAL.add(new Material.Surface("Polyethylene (thin)",        0.015));
  83                 SURFACE_MATERIAL.add(new Material.Surface("Polyethylene (heavy)",       0.040));
  84                 SURFACE_MATERIAL.add(new Material.Surface("Silk",                                       0.060));
  85                 SURFACE_MATERIAL.add(new Material.Surface("Paper (office)",                     0.080));
  86                 SURFACE_MATERIAL.add(new Material.Surface("Cellophane",                         0.018));
  87                 SURFACE_MATERIAL.add(new Material.Surface("Cr\u00eape paper",           0.025));
  88
  89                 LINE_MATERIAL.add(new Material.Line("Thread (heavy-duty)",                              0.0003));
  90                 LINE_MATERIAL.add(new Material.Line("Elastic cord (round 2mm, 1/16 in)",0.0018));
  91                 LINE_MATERIAL.add(new Material.Line("Elastic cord (flat  6mm, 1/4 in)", 0.0043));
  92                 LINE_MATERIAL.add(new Material.Line("Elastic cord (flat 12mm, 1/2 in)", 0.008));
  93                 LINE_MATERIAL.add(new Material.Line("Elastic cord (flat 19mm, 3/4 in)", 0.0012));
  94                 LINE_MATERIAL.add(new Material.Line("Elastic cord (flat 25mm, 1 in)",   0.0016));
  95                 LINE_MATERIAL.add(new Material.Line("Braided nylon (2 mm, 1/16 in)",    0.001));
  96                 LINE_MATERIAL.add(new Material.Line("Braided nylon (3 mm, 1/8 in)",     0.0035));
  97                 LINE_MATERIAL.add(new Material.Line("Tubular nylon (11 mm, 7/16 in)",   0.013));
  98                 LINE_MATERIAL.add(new Material.Line("Tubular nylon (14 mm, 9/16 in)",   0.016));
  99                 LINE_MATERIAL.add(new Material.Line("Tubular nylon (25 mm, 1 in)",              0.029));
 100         }
 101
 102
 103         /**
 104          * Find a material from the database with the specified type and name.  Returns
 105          * <code>null</code> if the specified material could not be found.
 106          *
 107          * @param type  the material type.
 108          * @param name  the material name in the database.
 109          * @return              the material, or <code>null</code> if not found.
 110          */
 111         public static Material findMaterial(Material.Type type, String name) {
 112                 Database<Material> db;
 113                 switch (type) {
 114                 case BULK:
 115                         db = BULK_MATERIAL;
 116                         break;
 117                 case SURFACE:
 118                         db = SURFACE_MATERIAL;
 119                         break;
 120                 case LINE:
 121                         db = LINE_MATERIAL;
 122                         break;
 123                 default:
 124                         throw new IllegalArgumentException("Illegal material type: "+type);
 125                 }
 126
 127                 for (Material m: db) {
 128                         if (m.getName().equalsIgnoreCase(name)) {
 129                                 return m;
 130                         }
 131                 }
 132                 return null;
 133         }
 134
 135
 136         /**
 137          * Find a material from the database or return a new material if the specified
 138          * material with the specified density is not found.
 139          *
 140          * @param type          the material type.
 141          * @param name          the material name.
 142          * @param density       the density of the material.
 143          * @return                      the material object from the database or a new material.
 144          */
 145         public static Material findMaterial(Material.Type type, String name, double density) {
 146                 Database<Material> db;
 147                 switch (type) {
 148                 case BULK:
 149                         db = BULK_MATERIAL;
 150                         break;
 151                 case SURFACE:
 152                         db = SURFACE_MATERIAL;
 153                         break;
 154                 case LINE:
 155                         db = LINE_MATERIAL;
 156                         break;
 157                 default:
 158                         throw new IllegalArgumentException("Illegal material type: "+type);
 159                 }
 160
 161                 for (Material m: db) {
 162                         if (m.getName().equalsIgnoreCase(name) && MathUtil.equals(m.getDensity(), density)) {
 163                                 return m;
 164                         }
 165                 }
 166                 return Material.newMaterial(type, name, density);
 167         }
 168
 169
 170
 171         /**
 172          * Return all motor in the database matching a search criteria.  Any search criteria that
 173          * is null or NaN is ignored.
 174          *
 175          * @param type                  the motor type, or null.
 176          * @param manufacturer  the manufacturer, or null.
 177          * @param designation   the designation, or null.
 178          * @param diameter              the diameter, or NaN.
 179          * @param length                the length, or NaN.
 180          * @return                              an array of all the matching motors.
 181          */
 182         public static Motor[] findMotors(Motor.Type type, String manufacturer, String designation, double diameter, double length) {
 183                 ArrayList<Motor> results = new ArrayList<Motor>();
 184
 185                 for (Motor m: MOTOR) {
 186                         boolean match = true;
 187                         if (type != null  &&  type != m.getMotorType())
 188                                 match = false;
 189                         else if (manufacturer != null  &&  !manufacturer.equalsIgnoreCase(m.getManufacturer()))
 190                                 match = false;
 191                         else if (designation != null  &&  !designation.equalsIgnoreCase(m.getDesignation()))
 192                                 match = false;
 193                         else if (!Double.isNaN(diameter)  &&  (Math.abs(diameter - m.getDiameter()) > 0.0015))
 194                                 match = false;
 195                         else if (!Double.isNaN(length) && (Math.abs(length - m.getLength()) > 0.0015))
 196                                 match = false;
 197
 198                         if (match)
 199                                 results.add(m);
 200                 }
 201
 202                 return results.toArray(new Motor[0]);
 203         }
 204
 205 }