+++ /dev/null
-package net.sf.openrocket.file;
-
-import java.io.BufferedReader;
-import java.io.IOException;
-import java.io.Reader;
-import java.nio.charset.Charset;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.List;
-
-import net.sf.openrocket.motor.Manufacturer;
-import net.sf.openrocket.motor.Motor;
-import net.sf.openrocket.motor.MotorDigest;
-import net.sf.openrocket.motor.ThrustCurveMotor;
-import net.sf.openrocket.motor.MotorDigest.DataType;
-import net.sf.openrocket.util.Coordinate;
-
-public class RASPMotorLoader extends MotorLoader {
-
- public static final String CHARSET_NAME = "ISO-8859-1";
-
- public static final Charset CHARSET = Charset.forName(CHARSET_NAME);
-
-
-
-
- @Override
- protected Charset getDefaultCharset() {
- return CHARSET;
- }
-
-
- /**
- * Load a <code>Motor</code> from a RASP file specified by the <code>Reader</code>.
- * The <code>Reader</code> is responsible for using the correct charset.
- * <p>
- * The CG is assumed to be located at the center of the motor casing and the mass
- * is calculated from the thrust curve by assuming a constant exhaust velocity.
- *
- * @param reader the source of the file.
- * @return a list of the {@link Motor} objects defined in the file.
- * @throws IOException if an I/O error occurs or if the file format is illegal.
- */
- @Override
- public List<Motor> load(Reader reader, String filename) throws IOException {
- List<Motor> motors = new ArrayList<Motor>();
- BufferedReader in = new BufferedReader(reader);
-
- String manufacturer = "";
- String designation = "";
- String comment = "";
-
- double length = 0;
- double diameter = 0;
- ArrayList<Double> delays = null;
-
- List<Double> time = new ArrayList<Double>();
- List<Double> thrust = new ArrayList<Double>();
-
- double propW = 0;
- double totalW = 0;
-
- try {
- String line;
- String[] pieces, buf;
-
- line = in.readLine();
- main: while (line != null) { // Until EOF
-
- manufacturer = "";
- designation = "";
- comment = "";
- length = 0;
- diameter = 0;
- delays = new ArrayList<Double>();
- propW = 0;
- totalW = 0;
- time.clear();
- thrust .clear();
-
- // Read comment
- while (line.length()==0 || line.charAt(0)==';') {
- if (line.length() > 0) {
- comment += line.substring(1).trim() + "\n";
- }
- line = in.readLine();
- if (line == null)
- break main;
- }
- comment = comment.trim();
-
- // Parse header line, example:
- // F32 24 124 5-10-15-P .0377 .0695 RV
- // desig diam len delays prop.w tot.w manufacturer
- pieces = split(line);
- if (pieces.length != 7) {
- throw new IOException("Illegal file format.");
- }
-
- designation = pieces[0];
- diameter = Double.parseDouble(pieces[1]) / 1000.0;
- length = Double.parseDouble(pieces[2]) / 1000.0;
-
- if (pieces[3].equalsIgnoreCase("None")) {
-
- } else {
- buf = split(pieces[3],"[-,]+");
- for (int i=0; i < buf.length; i++) {
- if (buf[i].equalsIgnoreCase("P") ||
- buf[i].equalsIgnoreCase("plugged")) {
- delays.add(Motor.PLUGGED);
- } else {
- // Many RASP files have "100" as an only delay
- double d = Double.parseDouble(buf[i]);
- if (d < 99)
- delays.add(d);
- }
- }
- Collections.sort(delays);
- }
-
- propW = Double.parseDouble(pieces[4]);
- totalW = Double.parseDouble(pieces[5]);
- manufacturer = pieces[6];
-
- if (propW > totalW) {
- throw new IOException("Propellant weight exceeds total weight in " +
- "RASP file");
- }
-
- // Read the data
- for (line = in.readLine();
- (line != null) && (line.length()==0 || line.charAt(0) != ';');
- line = in.readLine()) {
-
- buf = split(line);
- if (buf.length == 0) {
- continue;
- } else if (buf.length == 2) {
-
- time.add(Double.parseDouble(buf[0]));
- thrust .add(Double.parseDouble(buf[1]));
-
- } else {
- throw new IOException("Illegal file format.");
- }
- }
-
- // Comment of EOF encountered, marks the start of the next motor
- if (time.size() < 2) {
- throw new IOException("Illegal file format, too short thrust-curve.");
- }
- double[] delayArray = new double[delays.size()];
- for (int i=0; i<delays.size(); i++) {
- delayArray[i] = delays.get(i);
- }
- motors.add(createRASPMotor(manufacturer, designation, comment,
- length, diameter, delayArray, propW, totalW, time, thrust));
- }
-
- } catch (NumberFormatException e) {
-
- throw new IOException("Illegal file format.");
-
- } finally {
-
- in.close();
-
- }
-
- return motors;
- }
-
-
- /**
- * Create a motor from RASP file data.
- * @throws IOException if the data is illegal for a thrust curve
- */
- private static Motor createRASPMotor(String manufacturer, String designation,
- String comment, double length, double diameter, double[] delays,
- double propW, double totalW, List<Double> time, List<Double> thrust)
- throws IOException {
-
- // Add zero time/thrust if necessary
- sortLists(time, thrust);
- finalizeThrustCurve(time, thrust);
- List<Double> mass = calculateMass(time,thrust,totalW,propW);
-
- double[] timeArray = new double[time.size()];
- double[] thrustArray = new double[time.size()];
- Coordinate[] cgArray = new Coordinate[time.size()];
- for (int i=0; i < time.size(); i++) {
- timeArray[i] = time.get(i);
- thrustArray[i] = thrust.get(i);
- cgArray[i] = new Coordinate(length/2,0,0,mass.get(i));
- }
-
- designation = removeDelay(designation);
-
- // Create the motor digest from data available in RASP files
- MotorDigest motorDigest = new MotorDigest();
- motorDigest.update(DataType.TIME_ARRAY, timeArray);
- motorDigest.update(DataType.MASS_SPECIFIC, totalW, totalW-propW);
- motorDigest.update(DataType.FORCE_PER_TIME, thrustArray);
- final String digest = motorDigest.getDigest();
-
-
- try {
-
- return new ThrustCurveMotor(Manufacturer.getManufacturer(manufacturer),
- designation, comment, Motor.Type.UNKNOWN,
- delays, diameter, length, timeArray, thrustArray, cgArray, digest);
-
- } catch (IllegalArgumentException e) {
-
- // Bad data read from file.
- throw new IOException("Illegal file format.", e);
-
- }
- }
-}
projects / debian / openrocket / blobdiff