1 package net.sf.openrocket.unit;
3 import static net.sf.openrocket.util.Chars.*;
4 import static net.sf.openrocket.util.MathUtil.pow2;
6 import java.util.ArrayList;
7 import java.util.Collections;
8 import java.util.HashMap;
10 import java.util.regex.Matcher;
11 import java.util.regex.Pattern;
13 import net.sf.openrocket.rocketcomponent.Configuration;
14 import net.sf.openrocket.rocketcomponent.Rocket;
18 * A group of units (eg. length, mass etc.). Contains a list of different units of a same
21 * @author Sampo Niskanen <sampo.niskanen@iki.fi>
24 public class UnitGroup {
26 public static final UnitGroup UNITS_NONE;
28 public static final UnitGroup UNITS_MOTOR_DIMENSIONS;
29 public static final UnitGroup UNITS_LENGTH;
30 public static final UnitGroup UNITS_DISTANCE;
32 public static final UnitGroup UNITS_AREA;
33 public static final UnitGroup UNITS_STABILITY;
35 * This unit group contains only the caliber unit that never scales the originating "SI" value.
36 * It can be used in cases where the originating value is already in calibers to obtains the correct unit.
38 public static final UnitGroup UNITS_STABILITY_CALIBERS;
39 public static final UnitGroup UNITS_VELOCITY;
40 public static final UnitGroup UNITS_ACCELERATION;
41 public static final UnitGroup UNITS_MASS;
42 public static final UnitGroup UNITS_INERTIA;
43 public static final UnitGroup UNITS_ANGLE;
44 public static final UnitGroup UNITS_DENSITY_BULK;
45 public static final UnitGroup UNITS_DENSITY_SURFACE;
46 public static final UnitGroup UNITS_DENSITY_LINE;
47 public static final UnitGroup UNITS_FORCE;
48 public static final UnitGroup UNITS_IMPULSE;
50 /** Time in the order of less than a second (time step etc). */
51 public static final UnitGroup UNITS_TIME_STEP;
53 /** Time in the order of seconds (motor delay etc). */
54 public static final UnitGroup UNITS_SHORT_TIME;
56 /** Time in the order of the flight time of a rocket. */
57 public static final UnitGroup UNITS_FLIGHT_TIME;
58 public static final UnitGroup UNITS_ROLL;
59 public static final UnitGroup UNITS_TEMPERATURE;
60 public static final UnitGroup UNITS_PRESSURE;
61 public static final UnitGroup UNITS_RELATIVE;
62 public static final UnitGroup UNITS_ROUGHNESS;
64 public static final UnitGroup UNITS_COEFFICIENT;
66 // public static final UnitGroup UNITS_FREQUENCY;
69 public static final Map<String, UnitGroup> UNITS;
73 * Note: Units may not use HTML tags.
75 * The scaling value "X" is obtained by "one of this unit is X of SI units"
76 * Type into Google for example: "1 in^2 in m^2"
79 UNITS_NONE = new UnitGroup();
80 UNITS_NONE.addUnit(Unit.NOUNIT2);
82 UNITS_LENGTH = new UnitGroup();
83 UNITS_LENGTH.addUnit(new GeneralUnit(0.001, "mm"));
84 UNITS_LENGTH.addUnit(new GeneralUnit(0.01, "cm"));
85 UNITS_LENGTH.addUnit(new GeneralUnit(1, "m"));
86 UNITS_LENGTH.addUnit(new GeneralUnit(0.0254, "in"));
87 UNITS_LENGTH.addUnit(new GeneralUnit(0.3048, "ft"));
88 UNITS_LENGTH.setDefaultUnit(1);
90 UNITS_MOTOR_DIMENSIONS = new UnitGroup();
91 UNITS_MOTOR_DIMENSIONS.addUnit(new GeneralUnit(0.001, "mm"));
92 UNITS_MOTOR_DIMENSIONS.addUnit(new GeneralUnit(0.01, "cm"));
93 UNITS_MOTOR_DIMENSIONS.addUnit(new GeneralUnit(0.0254, "in"));
94 UNITS_MOTOR_DIMENSIONS.setDefaultUnit(0);
96 UNITS_DISTANCE = new UnitGroup();
97 UNITS_DISTANCE.addUnit(new GeneralUnit(1, "m"));
98 UNITS_DISTANCE.addUnit(new GeneralUnit(1000, "km"));
99 UNITS_DISTANCE.addUnit(new GeneralUnit(0.3048, "ft"));
100 UNITS_DISTANCE.addUnit(new GeneralUnit(0.9144, "yd"));
101 UNITS_DISTANCE.addUnit(new GeneralUnit(1609.344, "mi"));
102 UNITS_DISTANCE.addUnit(new GeneralUnit(1852, "nmi"));
104 UNITS_AREA = new UnitGroup();
105 UNITS_AREA.addUnit(new GeneralUnit(pow2(0.001), "mm" + SQUARED));
106 UNITS_AREA.addUnit(new GeneralUnit(pow2(0.01), "cm" + SQUARED));
107 UNITS_AREA.addUnit(new GeneralUnit(1, "m" + SQUARED));
108 UNITS_AREA.addUnit(new GeneralUnit(pow2(0.0254), "in" + SQUARED));
109 UNITS_AREA.addUnit(new GeneralUnit(pow2(0.3048), "ft" + SQUARED));
110 UNITS_AREA.setDefaultUnit(1);
113 UNITS_STABILITY = new UnitGroup();
114 UNITS_STABILITY.addUnit(new GeneralUnit(0.001, "mm"));
115 UNITS_STABILITY.addUnit(new GeneralUnit(0.01, "cm"));
116 UNITS_STABILITY.addUnit(new GeneralUnit(0.0254, "in"));
117 UNITS_STABILITY.addUnit(new CaliberUnit((Rocket) null));
118 UNITS_STABILITY.setDefaultUnit(3);
120 UNITS_STABILITY_CALIBERS = new UnitGroup();
121 UNITS_STABILITY_CALIBERS.addUnit(new GeneralUnit(1, "cal"));
124 UNITS_VELOCITY = new UnitGroup();
125 UNITS_VELOCITY.addUnit(new GeneralUnit(1, "m/s"));
126 UNITS_VELOCITY.addUnit(new GeneralUnit(1 / 3.6, "km/h"));
127 UNITS_VELOCITY.addUnit(new GeneralUnit(0.3048, "ft/s"));
128 UNITS_VELOCITY.addUnit(new GeneralUnit(0.44704, "mph"));
130 UNITS_ACCELERATION = new UnitGroup();
131 UNITS_ACCELERATION.addUnit(new GeneralUnit(1, "m/s" + SQUARED));
132 UNITS_ACCELERATION.addUnit(new GeneralUnit(0.3048, "ft/s" + SQUARED));
133 UNITS_ACCELERATION.addUnit(new GeneralUnit(9.80665, "G"));
135 UNITS_MASS = new UnitGroup();
136 UNITS_MASS.addUnit(new GeneralUnit(0.001, "g"));
137 UNITS_MASS.addUnit(new GeneralUnit(1, "kg"));
138 UNITS_MASS.addUnit(new GeneralUnit(0.0283495231, "oz"));
139 UNITS_MASS.addUnit(new GeneralUnit(0.45359237, "lb"));
141 UNITS_INERTIA = new UnitGroup();
142 UNITS_INERTIA.addUnit(new GeneralUnit(0.0001, "kg" + DOT + "cm" + SQUARED));
143 UNITS_INERTIA.addUnit(new GeneralUnit(1, "kg" + DOT + "m" + SQUARED));
144 UNITS_INERTIA.addUnit(new GeneralUnit(1.82899783e-5, "oz" + DOT + "in" + SQUARED));
145 UNITS_INERTIA.addUnit(new GeneralUnit(0.000292639653, "lb" + DOT + "in" + SQUARED));
146 UNITS_INERTIA.addUnit(new GeneralUnit(0.0421401101, "lb" + DOT + "ft" + SQUARED));
147 UNITS_INERTIA.addUnit(new GeneralUnit(1.35581795, "lbf" + DOT + "ft" + DOT + "s" + SQUARED));
148 UNITS_INERTIA.setDefaultUnit(1);
150 UNITS_ANGLE = new UnitGroup();
151 UNITS_ANGLE.addUnit(new DegreeUnit());
152 UNITS_ANGLE.addUnit(new FixedPrecisionUnit("rad", 0.01));
153 UNITS_ANGLE.addUnit(new GeneralUnit(1.0 / 3437.74677078, "arcmin"));
155 UNITS_DENSITY_BULK = new UnitGroup();
156 UNITS_DENSITY_BULK.addUnit(new GeneralUnit(1000, "g/cm" + CUBED));
157 UNITS_DENSITY_BULK.addUnit(new GeneralUnit(1, "kg/m" + CUBED));
158 UNITS_DENSITY_BULK.addUnit(new GeneralUnit(1729.99404, "oz/in" + CUBED));
159 UNITS_DENSITY_BULK.addUnit(new GeneralUnit(16.0184634, "lb/ft" + CUBED));
161 UNITS_DENSITY_SURFACE = new UnitGroup();
162 UNITS_DENSITY_SURFACE.addUnit(new GeneralUnit(10, "g/cm" + SQUARED));
163 UNITS_DENSITY_SURFACE.addUnit(new GeneralUnit(0.001, "g/m" + SQUARED));
164 UNITS_DENSITY_SURFACE.addUnit(new GeneralUnit(1, "kg/m" + SQUARED));
165 UNITS_DENSITY_SURFACE.addUnit(new GeneralUnit(43.9418487, "oz/in" + SQUARED));
166 UNITS_DENSITY_SURFACE.addUnit(new GeneralUnit(0.305151727, "oz/ft" + SQUARED));
167 UNITS_DENSITY_SURFACE.addUnit(new GeneralUnit(4.88242764, "lb/ft" + SQUARED));
168 UNITS_DENSITY_SURFACE.setDefaultUnit(1);
170 UNITS_DENSITY_LINE = new UnitGroup();
171 UNITS_DENSITY_LINE.addUnit(new GeneralUnit(0.001, "g/m"));
172 UNITS_DENSITY_LINE.addUnit(new GeneralUnit(1, "kg/m"));
173 UNITS_DENSITY_LINE.addUnit(new GeneralUnit(0.0930102465, "oz/ft"));
175 UNITS_FORCE = new UnitGroup();
176 UNITS_FORCE.addUnit(new GeneralUnit(1, "N"));
177 UNITS_FORCE.addUnit(new GeneralUnit(4.44822162, "lbf"));
178 UNITS_FORCE.addUnit(new GeneralUnit(9.80665, "kgf"));
180 UNITS_IMPULSE = new UnitGroup();
181 UNITS_IMPULSE.addUnit(new GeneralUnit(1, "Ns"));
182 UNITS_IMPULSE.addUnit(new GeneralUnit(4.44822162, "lbf" + DOT + "s"));
184 UNITS_TIME_STEP = new UnitGroup();
185 UNITS_TIME_STEP.addUnit(new FixedPrecisionUnit("ms", 1, 0.001));
186 UNITS_TIME_STEP.addUnit(new FixedPrecisionUnit("s", 0.01));
187 UNITS_TIME_STEP.setDefaultUnit(1);
189 UNITS_SHORT_TIME = new UnitGroup();
190 UNITS_SHORT_TIME.addUnit(new GeneralUnit(1, "s"));
192 UNITS_FLIGHT_TIME = new UnitGroup();
193 UNITS_FLIGHT_TIME.addUnit(new GeneralUnit(1, "s"));
194 UNITS_FLIGHT_TIME.addUnit(new GeneralUnit(60, "min"));
196 UNITS_ROLL = new UnitGroup();
197 UNITS_ROLL.addUnit(new GeneralUnit(1, "rad/s"));
198 UNITS_ROLL.addUnit(new GeneralUnit(2 * Math.PI, "r/s"));
199 UNITS_ROLL.addUnit(new GeneralUnit(2 * Math.PI / 60, "rpm"));
200 UNITS_ROLL.setDefaultUnit(1);
202 UNITS_TEMPERATURE = new UnitGroup();
203 UNITS_TEMPERATURE.addUnit(new FixedPrecisionUnit("K", 1));
204 UNITS_TEMPERATURE.addUnit(new TemperatureUnit(1, 273.15, DEGREE + "C"));
205 UNITS_TEMPERATURE.addUnit(new TemperatureUnit(5.0 / 9.0, 459.67, DEGREE + "F"));
206 UNITS_TEMPERATURE.setDefaultUnit(1);
208 UNITS_PRESSURE = new UnitGroup();
209 UNITS_PRESSURE.addUnit(new FixedPrecisionUnit("mbar", 1, 1.0e2));
210 UNITS_PRESSURE.addUnit(new FixedPrecisionUnit("bar", 0.001, 1.0e5));
211 UNITS_PRESSURE.addUnit(new FixedPrecisionUnit("atm", 0.001, 1.01325e5));
212 UNITS_PRESSURE.addUnit(new GeneralUnit(101325.0 / 760.0, "mmHg"));
213 UNITS_PRESSURE.addUnit(new GeneralUnit(3386.389, "inHg"));
214 UNITS_PRESSURE.addUnit(new GeneralUnit(6894.75729, "psi"));
215 UNITS_PRESSURE.addUnit(new GeneralUnit(1, "Pa"));
217 UNITS_RELATIVE = new UnitGroup();
218 UNITS_RELATIVE.addUnit(new FixedPrecisionUnit("" + ZWSP, 0.01, 1.0));
219 UNITS_RELATIVE.addUnit(new GeneralUnit(0.01, "%"));
220 UNITS_RELATIVE.addUnit(new FixedPrecisionUnit("" + PERMILLE, 1, 0.001));
221 // UNITS_RELATIVE.addUnit(new FixedPrecisionUnit("" + ZWSP, 0.01, 1.0));
222 // UNITS_RELATIVE.addUnit(new FixedPrecisionUnit("%", 1, 0.01));
223 // UNITS_RELATIVE.addUnit(new FixedPrecisionUnit("" + PERMILLE, 1, 0.001));
224 UNITS_RELATIVE.setDefaultUnit(1);
227 UNITS_ROUGHNESS = new UnitGroup();
228 UNITS_ROUGHNESS.addUnit(new GeneralUnit(0.000001, MICRO + "m"));
229 UNITS_ROUGHNESS.addUnit(new GeneralUnit(0.0000254, "mil"));
232 UNITS_COEFFICIENT = new UnitGroup();
233 UNITS_COEFFICIENT.addUnit(new FixedPrecisionUnit("" + ZWSP, 0.01)); // zero-width space
236 // This is not used by OpenRocket, and not extensively tested:
237 // UNITS_FREQUENCY = new UnitGroup();
238 // UNITS_FREQUENCY.addUnit(new GeneralUnit(1, "s"));
239 // UNITS_FREQUENCY.addUnit(new GeneralUnit(0.001, "ms"));
240 // UNITS_FREQUENCY.addUnit(new GeneralUnit(0.000001, MICRO + "s"));
241 // UNITS_FREQUENCY.addUnit(new FrequencyUnit(1, "Hz"));
242 // UNITS_FREQUENCY.addUnit(new FrequencyUnit(1000, "kHz"));
243 // UNITS_FREQUENCY.setDefaultUnit(3);
246 HashMap<String, UnitGroup> map = new HashMap<String, UnitGroup>();
247 map.put("NONE", UNITS_NONE);
248 map.put("LENGTH", UNITS_LENGTH);
249 map.put("MOTOR_DIMENSIONS", UNITS_MOTOR_DIMENSIONS);
250 map.put("DISTANCE", UNITS_DISTANCE);
251 map.put("VELOCITY", UNITS_VELOCITY);
252 map.put("ACCELERATION", UNITS_ACCELERATION);
253 map.put("AREA", UNITS_AREA);
254 map.put("STABILITY", UNITS_STABILITY);
255 map.put("MASS", UNITS_MASS);
256 map.put("INERTIA", UNITS_INERTIA);
257 map.put("ANGLE", UNITS_ANGLE);
258 map.put("DENSITY_BULK", UNITS_DENSITY_BULK);
259 map.put("DENSITY_SURFACE", UNITS_DENSITY_SURFACE);
260 map.put("DENSITY_LINE", UNITS_DENSITY_LINE);
261 map.put("FORCE", UNITS_FORCE);
262 map.put("IMPULSE", UNITS_IMPULSE);
263 map.put("TIME_STEP", UNITS_TIME_STEP);
264 map.put("SHORT_TIME", UNITS_SHORT_TIME);
265 map.put("FLIGHT_TIME", UNITS_FLIGHT_TIME);
266 map.put("ROLL", UNITS_ROLL);
267 map.put("TEMPERATURE", UNITS_TEMPERATURE);
268 map.put("PRESSURE", UNITS_PRESSURE);
269 map.put("RELATIVE", UNITS_RELATIVE);
270 map.put("ROUGHNESS", UNITS_ROUGHNESS);
271 map.put("COEFFICIENT", UNITS_COEFFICIENT);
273 UNITS = Collections.unmodifiableMap(map);
276 public static void setDefaultMetricUnits() {
277 UNITS_LENGTH.setDefaultUnit("cm");
278 UNITS_MOTOR_DIMENSIONS.setDefaultUnit("mm");
279 UNITS_DISTANCE.setDefaultUnit("m");
280 UNITS_AREA.setDefaultUnit("cm" + SQUARED);
281 UNITS_STABILITY.setDefaultUnit("cal");
282 UNITS_VELOCITY.setDefaultUnit("m/s");
283 UNITS_ACCELERATION.setDefaultUnit("m/s" + SQUARED);
284 UNITS_MASS.setDefaultUnit("g");
285 UNITS_INERTIA.setDefaultUnit("kg" + DOT + "m" + SQUARED);
286 UNITS_ANGLE.setDefaultUnit("" + DEGREE);
287 UNITS_DENSITY_BULK.setDefaultUnit("g/cm" + CUBED);
288 UNITS_DENSITY_SURFACE.setDefaultUnit("g/m" + SQUARED);
289 UNITS_DENSITY_LINE.setDefaultUnit("g/m");
290 UNITS_FORCE.setDefaultUnit("N");
291 UNITS_IMPULSE.setDefaultUnit("Ns");
292 UNITS_TIME_STEP.setDefaultUnit("s");
293 UNITS_FLIGHT_TIME.setDefaultUnit("s");
294 UNITS_ROLL.setDefaultUnit("r/s");
295 UNITS_TEMPERATURE.setDefaultUnit(DEGREE + "C");
296 UNITS_PRESSURE.setDefaultUnit("mbar");
297 UNITS_RELATIVE.setDefaultUnit("%");
298 UNITS_ROUGHNESS.setDefaultUnit(MICRO + "m");
301 public static void setDefaultImperialUnits() {
302 UNITS_LENGTH.setDefaultUnit("in");
303 UNITS_MOTOR_DIMENSIONS.setDefaultUnit("in");
304 UNITS_DISTANCE.setDefaultUnit("ft");
305 UNITS_AREA.setDefaultUnit("in" + SQUARED);
306 UNITS_STABILITY.setDefaultUnit("cal");
307 UNITS_VELOCITY.setDefaultUnit("ft/s");
308 UNITS_ACCELERATION.setDefaultUnit("ft/s" + SQUARED);
309 UNITS_MASS.setDefaultUnit("oz");
310 UNITS_INERTIA.setDefaultUnit("lb" + DOT + "ft" + SQUARED);
311 UNITS_ANGLE.setDefaultUnit("" + DEGREE);
312 UNITS_DENSITY_BULK.setDefaultUnit("oz/in" + CUBED);
313 UNITS_DENSITY_SURFACE.setDefaultUnit("oz/ft" + SQUARED);
314 UNITS_DENSITY_LINE.setDefaultUnit("oz/ft");
315 UNITS_FORCE.setDefaultUnit("N");
316 UNITS_IMPULSE.setDefaultUnit("Ns");
317 UNITS_TIME_STEP.setDefaultUnit("s");
318 UNITS_FLIGHT_TIME.setDefaultUnit("s");
319 UNITS_ROLL.setDefaultUnit("r/s");
320 UNITS_TEMPERATURE.setDefaultUnit(DEGREE + "F");
321 UNITS_PRESSURE.setDefaultUnit("mbar");
322 UNITS_RELATIVE.setDefaultUnit("%");
323 UNITS_ROUGHNESS.setDefaultUnit("mil");
328 * Return a UnitGroup for stability units based on the rocket.
330 * @param rocket the rocket from which to calculate the caliber
331 * @return the unit group
333 public static UnitGroup stabilityUnits(Rocket rocket) {
334 return new StabilityUnitGroup(rocket);
339 * Return a UnitGroup for stability units based on the rocket configuration.
341 * @param config the rocket configuration from which to calculate the caliber
342 * @return the unit group
344 public static UnitGroup stabilityUnits(Configuration config) {
345 return new StabilityUnitGroup(config);
350 * Return a UnitGroup for stability units based on a constant caliber.
352 * @param reference the constant reference length
353 * @return the unit group
355 public static UnitGroup stabilityUnits(double reference) {
356 return new StabilityUnitGroup(reference);
360 //////////////////////////////////////////////////////
363 protected ArrayList<Unit> units = new ArrayList<Unit>();
364 protected int defaultUnit = 0;
366 public int getUnitCount() {
370 public Unit getDefaultUnit() {
371 return units.get(defaultUnit);
374 public int getDefaultUnitIndex() {
378 public void setDefaultUnit(int n) {
379 if (n < 0 || n >= units.size()) {
380 throw new IllegalArgumentException("index out of range: " + n);
388 * Find a unit by approximate unit name. Only letters and (ordinary) numbers are
389 * considered in the matching. This method is mainly means for testing, allowing
390 * a simple means to obtain a particular unit.
392 * @param str the unit name.
393 * @return the corresponding unit, or <code>null</code> if not found.
395 public Unit findApproximate(String str) {
396 str = str.replaceAll("\\W", "").trim();
397 for (Unit u : units) {
398 String name = u.getUnit().replaceAll("\\W", "").trim();
399 if (str.equalsIgnoreCase(name))
406 * Set the default unit based on the unit name. Throws an exception if a
407 * unit with the provided name is not available.
409 * @param name the unit name.
410 * @throws IllegalArgumentException if the corresponding unit is not found in the group.
412 public void setDefaultUnit(String name) throws IllegalArgumentException {
413 for (int i = 0; i < units.size(); i++) {
414 if (units.get(i).getUnit().equals(name)) {
419 throw new IllegalArgumentException("name=" + name);
422 public Unit getUnit( String name ) throws IllegalArgumentException {
423 for (int i = 0; i < units.size(); i++) {
424 if (units.get(i).getUnit().equals(name)) {
428 throw new IllegalArgumentException("name=" + name);
431 public Unit getUnit(int n) {
435 public int getUnitIndex(Unit u) {
436 return units.indexOf(u);
439 public void addUnit(Unit u) {
443 public boolean contains(Unit u) {
444 return units.contains(u);
447 public Unit[] getUnits() {
448 return units.toArray(new Unit[0]);
453 * Return the value formatted by the default unit of this group.
454 * It is the same as calling <code>getDefaultUnit().toString(value)</code>.
456 * @param value the SI value to format.
457 * @return the formatted string.
458 * @see Unit#toString(double)
460 public String toString(double value) {
461 return this.getDefaultUnit().toString(value);
466 * Return the value formatted by the default unit of this group including the unit.
467 * It is the same as calling <code>getDefaultUnit().toStringUnit(value)</code>.
469 * @param value the SI value to format.
470 * @return the formatted string.
471 * @see Unit#toStringUnit(double)
473 public String toStringUnit(double value) {
474 return this.getDefaultUnit().toStringUnit(value);
482 * Creates a new Value object with the specified value and the default unit of this group.
484 * @param value the value to set.
485 * @return a new Value object.
487 public Value toValue(double value) {
488 return this.getDefaultUnit().toValue(value);
494 private static final Pattern STRING_PATTERN = Pattern.compile("^\\s*([0-9.,-]+)(.*?)$");
497 * Converts a string into an SI value. If the string has one of the units in this
498 * group appended to it, that unit will be used in conversion. Otherwise the default
499 * unit will be used. If an unknown unit is specified or the value does not parse
500 * with <code>Double.parseDouble</code> then a <code>NumberFormatException</code>
503 * This method is applicable only for simple units without e.g. powers.
505 * @param str the string to parse.
506 * @return the SI value.
507 * @throws NumberFormatException if the string cannot be parsed.
509 public double fromString(String str) {
510 Matcher matcher = STRING_PATTERN.matcher(str);
512 if (!matcher.matches()) {
513 throw new NumberFormatException("string did not match required pattern");
516 double value = Double.parseDouble(matcher.group(1));
517 String unit = matcher.group(2).trim();
519 if (unit.equals("")) {
520 value = this.getDefaultUnit().fromUnit(value);
523 for (i = 0; i < units.size(); i++) {
524 Unit u = units.get(i);
525 if (unit.equalsIgnoreCase(u.getUnit())) {
526 value = u.fromUnit(value);
530 if (i >= units.size()) {
531 throw new NumberFormatException("unknown unit " + unit);
539 ///////////////////////////
543 * A private class that switches the CaliberUnit to a rocket-specific CaliberUnit.
544 * All other methods are passed through to UNITS_STABILITY.
546 private static class StabilityUnitGroup extends UnitGroup {
548 public StabilityUnitGroup(double ref) {
549 this(new CaliberUnit(ref));
552 public StabilityUnitGroup(Rocket rocket) {
553 this(new CaliberUnit(rocket));
556 public StabilityUnitGroup(Configuration config) {
557 this(new CaliberUnit(config));
560 private StabilityUnitGroup(CaliberUnit caliberUnit) {
561 this.units.addAll(UnitGroup.UNITS_STABILITY.units);
562 this.defaultUnit = UnitGroup.UNITS_STABILITY.defaultUnit;
563 for (int i = 0; i < units.size(); i++) {
564 if (units.get(i) instanceof CaliberUnit) {
565 units.set(i, caliberUnit);
572 public void setDefaultUnit(int n) {
573 super.setDefaultUnit(n);
574 UNITS_STABILITY.setDefaultUnit(n);