4 package net.sf.openrocket.file.rocksim;
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.rocketcomponent.RocketComponent;
10 import net.sf.openrocket.rocketcomponent.Streamer;
11 import org.xml.sax.SAXException;
13 import java.util.HashMap;
16 * A SAX handler for Streamer components.
18 class StreamerHandler extends RecoveryDeviceHandler<Streamer> {
21 * The OpenRocket Streamer.
23 private final Streamer streamer;
28 * @param c the parent component
29 * @param warnings the warning set
31 * @throws IllegalArgumentException thrown if <code>c</code> is null
33 public StreamerHandler(RocketComponent c, WarningSet warnings) throws IllegalArgumentException {
35 throw new IllegalArgumentException("The parent of a streamer may not be null.");
37 streamer = new Streamer();
38 if (isCompatible(c, Streamer.class, warnings)) {
47 public ElementHandler openElement(String element, HashMap<String, String> attributes, WarningSet warnings) {
48 return PlainTextHandler.INSTANCE;
55 public void closeElement(String element, HashMap<String, String> attributes, String content, WarningSet warnings)
57 super.closeElement(element, attributes, content, warnings);
60 if ("Width".equals(element)) {
61 streamer.setStripWidth(Math.max(0, Double.parseDouble(content) / RocksimHandler.ROCKSIM_TO_OPENROCKET_LENGTH));
63 if ("Len".equals(element)) {
64 streamer.setStripLength(Math.max(0, Double.parseDouble(content) / RocksimHandler.ROCKSIM_TO_OPENROCKET_LENGTH));
66 if ("DragCoefficient".equals(element)) {
67 streamer.setCD(Double.parseDouble(content));
69 if ("Material".equals(element)) {
70 setMaterialName(content);
73 catch (NumberFormatException nfe) {
74 warnings.add("Could not convert " + element + " value of " + content + ". It is expected to be a number.");
82 public Streamer getComponent() {