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

   1 /*
   2  * NoseConeHandler.java
   3  */
   4 package net.sf.openrocket.file.rocksim.importt;
   5
   6 import net.sf.openrocket.aerodynamics.WarningSet;
   7 import net.sf.openrocket.file.rocksim.RocksimCommonConstants;
   8 import net.sf.openrocket.file.rocksim.RocksimFinishCode;
   9 import net.sf.openrocket.file.rocksim.RocksimNoseConeCode;
  10 import net.sf.openrocket.file.simplesax.ElementHandler;
  11 import net.sf.openrocket.file.simplesax.PlainTextHandler;
  12 import net.sf.openrocket.material.Material;
  13 import net.sf.openrocket.rocketcomponent.NoseCone;
  14 import net.sf.openrocket.rocketcomponent.RocketComponent;
  15 import net.sf.openrocket.rocketcomponent.Transition;
  16 import org.xml.sax.SAXException;
  17
  18 import java.util.HashMap;
  19
  20 /**
  21  * The SAX nose cone handler for Rocksim NoseCones.
  22  */
  23 class NoseConeHandler extends BaseHandler<NoseCone> {
  24
  25     /**
  26      * The OpenRocket NoseCone.
  27      */
  28     private final NoseCone noseCone = new NoseCone();
  29
  30     /**
  31      * The wall thickness.  Used for hollow nose cones.
  32      */
  33     private double thickness = 0d;
  34
  35     /**
  36      * Constructor.
  37      *
  38      * @param c the parent component to the nosecone
  39      * @param warnings  the warning set
  40      *
  41      * @throws IllegalArgumentException thrown if <code>c</code> is null
  42      */
  43     public NoseConeHandler(RocketComponent c, WarningSet warnings) throws IllegalArgumentException {
  44         if (c == null) {
  45             throw new IllegalArgumentException("The parent component of a nose cone may not be null.");
  46         }
  47         if (isCompatible(c, NoseCone.class, warnings)) {
  48             c.addChild(noseCone);
  49             noseCone.setAftRadiusAutomatic(false);
  50         }
  51     }
  52
  53     @Override
  54     public ElementHandler openElement(String element, HashMap<String, String> attributes, WarningSet warnings) {
  55         //Nose cones in Rocksim may have attached parts - namely Mass Objects - as children.
  56         if (RocksimCommonConstants.ATTACHED_PARTS.equals(element)) {
  57             return new AttachedPartsHandler(noseCone);
  58         }
  59         return PlainTextHandler.INSTANCE;
  60     }
  61
  62     @Override
  63     public void closeElement(String element, HashMap<String, String> attributes,
  64                              String content, WarningSet warnings) throws SAXException {
  65         super.closeElement(element, attributes, content, warnings);
  66
  67         try {
  68             if (RocksimCommonConstants.SHAPE_CODE.equals(element)) {
  69                 noseCone.setType(RocksimNoseConeCode.fromCode(Integer.parseInt(content)).asOpenRocket());
  70             }
  71             if (RocksimCommonConstants.LEN.equals(element)) {
  72                 noseCone.setLength(Math.max(0, Double.parseDouble(content) / RocksimCommonConstants.ROCKSIM_TO_OPENROCKET_LENGTH));
  73             }
  74             if (RocksimCommonConstants.BASE_DIA.equals(element)) {
  75                 noseCone.setAftRadius(Math.max(0, Double.parseDouble(content) / RocksimCommonConstants.ROCKSIM_TO_OPENROCKET_RADIUS));
  76             }
  77             if (RocksimCommonConstants.WALL_THICKNESS.equals(element)) {
  78                 thickness = Math.max(0, Double.parseDouble(content) / RocksimCommonConstants.ROCKSIM_TO_OPENROCKET_LENGTH);
  79             }
  80             if (RocksimCommonConstants.SHOULDER_OD.equals(element)) {
  81                 noseCone.setAftShoulderRadius(Math.max(0, Double.parseDouble(
  82                         content) / RocksimCommonConstants.ROCKSIM_TO_OPENROCKET_RADIUS));
  83             }
  84             if (RocksimCommonConstants.SHOULDER_LEN.equals(element)) {
  85                 noseCone.setAftShoulderLength(Math.max(0, Double.parseDouble(
  86                         content) / RocksimCommonConstants.ROCKSIM_TO_OPENROCKET_LENGTH));
  87             }
  88             if (RocksimCommonConstants.SHAPE_PARAMETER.equals(element)) {
  89                 //The Rocksim ShapeParameter only applies to certain shapes, although it is included
  90                 //in the design file for all nose cones.  Applying it when it should not be causes oddities so
  91                 //a check is made for the allowable shapes.
  92                 if (Transition.Shape.POWER.equals(noseCone.getType()) ||
  93                     Transition.Shape.HAACK.equals(noseCone.getType()) ||
  94                     Transition.Shape.PARABOLIC.equals(noseCone.getType())) {
  95                     noseCone.setShapeParameter(Double.parseDouble(content));
  96                 }
  97             }
  98             if (RocksimCommonConstants.CONSTRUCTION_TYPE.equals(element)) {
  99                 int typeCode = Integer.parseInt(content);
 100                 if (typeCode == 0) {
 101                     //SOLID
 102                     noseCone.setFilled(true);
 103                 }
 104                 else if (typeCode == 1) {
 105                     //HOLLOW
 106                     noseCone.setFilled(false);
 107                 }
 108             }
 109             if (RocksimCommonConstants.FINISH_CODE.equals(element)) {
 110                 noseCone.setFinish(RocksimFinishCode.fromCode(Integer.parseInt(content)).asOpenRocket());
 111             }
 112             if (RocksimCommonConstants.MATERIAL.equals(element)) {
 113                 setMaterialName(content);
 114             }
 115         }
 116         catch (NumberFormatException nfe) {
 117             warnings.add("Could not convert " + element + " value of " + content + ".  It is expected to be a number.");
 118         }
 119     }
 120
 121     @Override
 122     public void endHandler(String element, HashMap<String, String> attributes, String content, WarningSet warnings)
 123             throws SAXException {
 124         super.endHandler(element, attributes, content, warnings);
 125
 126         if (noseCone.isFilled()) {
 127             noseCone.setAftShoulderThickness(noseCone.getAftShoulderRadius());
 128         }
 129         else {
 130             noseCone.setThickness(thickness);
 131             noseCone.setAftShoulderThickness(thickness);
 132         }
 133     }
 134
 135     /**
 136      * Get the nose cone component this handler is working upon.
 137      *
 138      * @return a nose cone component
 139      */
 140     @Override
 141     public NoseCone getComponent() {
 142         return noseCone;
 143     }
 144
 145     /**
 146      * Get the required type of material for this component.
 147      *
 148      * @return BULK
 149      */
 150     public Material.Type getMaterialType() {
 151         return Material.Type.BULK;
 152     }
 153
 154 }