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      * @throws IllegalArgumentException thrown if <code>c</code> is null
  37      */
  38     public NoseConeHandler(RocketComponent c) throws IllegalArgumentException {
  39         if (c == null) {
  40             throw new IllegalArgumentException("The parent component of a nose cone may not be null.");
  41         }
  42         c.addChild(noseCone);
  43         noseCone.setAftRadiusAutomatic(false);
  44     }
  45
  46     @Override
  47     public ElementHandler openElement(String element, HashMap<String, String> attributes, WarningSet warnings) {
  48         //Nose cones in Rocksim may have attached parts - namely Mass Objects - as children.
  49         if ("AttachedParts".equals(element)) {
  50             return new AttachedPartsHandler(noseCone);
  51         }
  52         return PlainTextHandler.INSTANCE;
  53     }
  54
  55     @Override
  56     public void closeElement(String element, HashMap<String, String> attributes,
  57                              String content, WarningSet warnings) throws SAXException {
  58         super.closeElement(element, attributes, content, warnings);
  59
  60         try {
  61             if ("ShapeCode".equals(element)) {
  62                 noseCone.setType(RocksimNoseConeCode.fromCode(Integer.parseInt(content)).asOpenRocket());
  63             }
  64             if ("Len".equals(element)) {
  65                 noseCone.setLength(Math.max(0, Double.parseDouble(content) / RocksimHandler.ROCKSIM_TO_OPENROCKET_LENGTH));
  66             }
  67             if ("BaseDia".equals(element)) {
  68                 noseCone.setAftRadius(Math.max(0, Double.parseDouble(content) / RocksimHandler.ROCKSIM_TO_OPENROCKET_RADIUS));
  69             }
  70             if ("WallThickness".equals(element)) {
  71                 thickness = Math.max(0, Double.parseDouble(content) / RocksimHandler.ROCKSIM_TO_OPENROCKET_LENGTH);
  72             }
  73             if ("ShoulderOD".equals(element)) {
  74                 noseCone.setAftShoulderRadius(Math.max(0, Double.parseDouble(
  75                         content) / RocksimHandler.ROCKSIM_TO_OPENROCKET_RADIUS));
  76             }
  77             if ("ShoulderLen".equals(element)) {
  78                 noseCone.setAftShoulderLength(Math.max(0, Double.parseDouble(
  79                         content) / RocksimHandler.ROCKSIM_TO_OPENROCKET_LENGTH));
  80             }
  81             if ("ShapeParameter".equals(element)) {
  82                 //The Rocksim ShapeParameter only applies to certain shapes, although it is included
  83                 //in the design file for all nose cones.  Applying it when it should not be causes oddities so
  84                 //a check is made for the allowable shapes.
  85                 if (Transition.Shape.POWER.equals(noseCone.getType()) ||
  86                     Transition.Shape.HAACK.equals(noseCone.getType()) ||
  87                     Transition.Shape.PARABOLIC.equals(noseCone.getType())) {
  88                     noseCone.setShapeParameter(Double.parseDouble(content));
  89                 }
  90             }
  91             if ("ConstructionType".equals(element)) {
  92                 int typeCode = Integer.parseInt(content);
  93                 if (typeCode == 0) {
  94                     //SOLID
  95                     noseCone.setFilled(true);
  96                 }
  97                 else if (typeCode == 1) {
  98                     //HOLLOW
  99                     noseCone.setFilled(false);
 100                 }
 101             }
 102             if ("FinishCode".equals(element)) {
 103                 noseCone.setFinish(RocksimFinishCode.fromCode(Integer.parseInt(content)).asOpenRocket());
 104             }
 105             if ("Material".equals(element)) {
 106                 setMaterialName(content);
 107             }
 108         }
 109         catch (NumberFormatException nfe) {
 110             warnings.add("Could not convert " + element + " value of " + content + ".  It is expected to be a number.");
 111         }
 112     }
 113
 114     @Override
 115     public void endHandler(String element, HashMap<String, String> attributes, String content, WarningSet warnings)
 116             throws SAXException {
 117         super.endHandler(element, attributes, content, warnings);
 118
 119         if (noseCone.isFilled()) {
 120             noseCone.setAftShoulderThickness(noseCone.getAftShoulderRadius());
 121         }
 122         else {
 123             noseCone.setThickness(thickness);
 124             noseCone.setAftShoulderThickness(thickness);
 125         }
 126     }
 127
 128     /**
 129      * Get the nose cone component this handler is working upon.
 130      *
 131      * @return a nose cone component
 132      */
 133     @Override
 134     public NoseCone getComponent() {
 135         return noseCone;
 136     }
 137
 138     /**
 139      * Get the required type of material for this component.
 140      *
 141      * @return BULK
 142      */
 143     public Material.Type getMaterialType() {
 144         return Material.Type.BULK;
 145     }
 146
 147 }