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 * @throws IllegalArgumentException thrown if <code>c</code> is null
31 public StreamerHandler(RocketComponent c) throws IllegalArgumentException {
33 throw new IllegalArgumentException("The parent of a streamer may not be null.");
35 streamer = new Streamer();
43 public ElementHandler openElement(String element, HashMap<String, String> attributes, WarningSet warnings) {
44 return PlainTextHandler.INSTANCE;
51 public void closeElement(String element, HashMap<String, String> attributes, String content, WarningSet warnings)
53 super.closeElement(element, attributes, content, warnings);
56 if ("Width".equals(element)) {
57 streamer.setStripWidth(Math.max(0, Double.parseDouble(content) / RocksimHandler.ROCKSIM_TO_OPENROCKET_LENGTH));
59 if ("Len".equals(element)) {
60 streamer.setStripLength(Math.max(0, Double.parseDouble(content) / RocksimHandler.ROCKSIM_TO_OPENROCKET_LENGTH));
62 if ("DragCoefficient".equals(element)) {
63 streamer.setCD(Double.parseDouble(content));
65 if ("Material".equals(element)) {
66 setMaterialName(content);
69 catch (NumberFormatException nfe) {
70 warnings.add("Could not convert " + element + " value of " + content + ". It is expected to be a number.");
78 public Streamer getComponent() {