git.gag.com Git - debian/openrocket/blob - src/net/sf/openrocket/file/rocksim/NoseConeHandler.java

   1 /*
   2  * NoseConeHandler.java
   3  */
   4 package net.sf.openrocket.file.rocksim;
   5
   6 import net.sf.openrocket.aerodynamics.WarningSet;
   7 import net.sf.openrocket.file.simplesax.ElementHandler;
   8 import net.sf.openrocket.file.simplesax.PlainTextHandler;
   9 import net.sf.openrocket.material.Material;
  10 import net.sf.openrocket.rocketcomponent.NoseCone;
  11 import net.sf.openrocket.rocketcomponent.RocketComponent;
  12 import net.sf.openrocket.rocketcomponent.Transition;
  13 import org.xml.sax.SAXException;
  14
  15 import java.util.HashMap;
  16
  17 /**
  18  * The SAX nose cone handler for Rocksim NoseCones.
  19  */
  20 class NoseConeHandler extends BaseHandler<NoseCone> {
  21
  22     /**
  23      * The OpenRocket NoseCone.
  24      */
  25     private final NoseCone noseCone = new NoseCone();
  26
  27     /**
  28      * The wall thickness.  Used for hollow nose cones.
  29      */
  30     private double thickness = 0d;
  31
  32     /**
  33      * Constructor.
  34      *
  35      * @param c the parent component to the nosecone
  36      * @param warnings  the warning set
  37      *
  38      * @throws IllegalArgumentException thrown if <code>c</code> is null
  39      */
  40     public NoseConeHandler(RocketComponent c, WarningSet warnings) throws IllegalArgumentException {
  41         if (c == null) {
  42             throw new IllegalArgumentException("The parent component of a nose cone may not be null.");
  43         }
  44         if (isCompatible(c, NoseCone.class, warnings)) {
  45             c.addChild(noseCone);
  46             noseCone.setAftRadiusAutomatic(false);
  47         }
  48     }
  49
  50     @Override
  51     public ElementHandler openElement(String element, HashMap<String, String> attributes, WarningSet warnings) {
  52         //Nose cones in Rocksim may have attached parts - namely Mass Objects - as children.
  53         if ("AttachedParts".equals(element)) {
  54             return new AttachedPartsHandler(noseCone);
  55         }
  56         return PlainTextHandler.INSTANCE;
  57     }
  58
  59     @Override
  60     public void closeElement(String element, HashMap<String, String> attributes,
  61                              String content, WarningSet warnings) throws SAXException {
  62         super.closeElement(element, attributes, content, warnings);
  63
  64         try {
  65             if ("ShapeCode".equals(element)) {
  66                 noseCone.setType(RocksimNoseConeCode.fromCode(Integer.parseInt(content)).asOpenRocket());
  67             }
  68             if ("Len".equals(element)) {
  69                 noseCone.setLength(Math.max(0, Double.parseDouble(content) / RocksimHandler.ROCKSIM_TO_OPENROCKET_LENGTH));
  70             }
  71             if ("BaseDia".equals(element)) {
  72                 noseCone.setAftRadius(Math.max(0, Double.parseDouble(content) / RocksimHandler.ROCKSIM_TO_OPENROCKET_RADIUS));
  73             }
  74             if ("WallThickness".equals(element)) {
  75                 thickness = Math.max(0, Double.parseDouble(content) / RocksimHandler.ROCKSIM_TO_OPENROCKET_LENGTH);
  76             }
  77             if ("ShoulderOD".equals(element)) {
  78                 noseCone.setAftShoulderRadius(Math.max(0, Double.parseDouble(
  79                         content) / RocksimHandler.ROCKSIM_TO_OPENROCKET_RADIUS));
  80             }
  81             if ("ShoulderLen".equals(element)) {
  82                 noseCone.setAftShoulderLength(Math.max(0, Double.parseDouble(
  83                         content) / RocksimHandler.ROCKSIM_TO_OPENROCKET_LENGTH));
  84             }
  85             if ("ShapeParameter".equals(element)) {
  86                 //The Rocksim ShapeParameter only applies to certain shapes, although it is included
  87                 //in the design file for all nose cones.  Applying it when it should not be causes oddities so
  88                 //a check is made for the allowable shapes.
  89                 if (Transition.Shape.POWER.equals(noseCone.getType()) ||
  90                     Transition.Shape.HAACK.equals(noseCone.getType()) ||
  91                     Transition.Shape.PARABOLIC.equals(noseCone.getType())) {
  92                     noseCone.setShapeParameter(Double.parseDouble(content));
  93                 }
  94             }
  95             if ("ConstructionType".equals(element)) {
  96                 int typeCode = Integer.parseInt(content);
  97                 if (typeCode == 0) {
  98                     //SOLID
  99                     noseCone.setFilled(true);
 100                 }
 101                 else if (typeCode == 1) {
 102                     //HOLLOW
 103                     noseCone.setFilled(false);
 104                 }
 105             }
 106             if ("FinishCode".equals(element)) {
 107                 noseCone.setFinish(RocksimFinishCode.fromCode(Integer.parseInt(content)).asOpenRocket());
 108             }
 109             if ("Material".equals(element)) {
 110                 setMaterialName(content);
 111             }
 112         }
 113         catch (NumberFormatException nfe) {
 114             warnings.add("Could not convert " + element + " value of " + content + ".  It is expected to be a number.");
 115         }
 116     }
 117
 118     @Override
 119     public void endHandler(String element, HashMap<String, String> attributes, String content, WarningSet warnings)
 120             throws SAXException {
 121         super.endHandler(element, attributes, content, warnings);
 122
 123         if (noseCone.isFilled()) {
 124             noseCone.setAftShoulderThickness(noseCone.getAftShoulderRadius());
 125         }
 126         else {
 127             noseCone.setThickness(thickness);
 128             noseCone.setAftShoulderThickness(thickness);
 129         }
 130     }
 131
 132     /**
 133      * Get the nose cone component this handler is working upon.
 134      *
 135      * @return a nose cone component
 136      */
 137     @Override
 138     public NoseCone getComponent() {
 139         return noseCone;
 140     }
 141
 142     /**
 143      * Get the required type of material for this component.
 144      *
 145      * @return BULK
 146      */
 147     public Material.Type getMaterialType() {
 148         return Material.Type.BULK;
 149     }
 150
 151 }