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First functional test for Oscillation pattern, checks out with values from R script implementation.

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Nidhi Sawhney committed 2012-05-31 12:21:13 +02:00
1 parent 906d6872ea
commit 80dc774380
2 files changed
+108 -23
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java/com.sap.sailing.simulator.test/src/com/sap/sailing/simulator/test/WindFieldGeneratorTest.java
+104 -19
View File
@@ -19,6 +19,7 @@ import com.sap.sailing.domain.common.Position;
import com.sap.sailing.domain.common.TimePoint;
import com.sap.sailing.domain.common.impl.DegreeBearingImpl;
import com.sap.sailing.domain.common.impl.DegreePosition;
import com.sap.sailing.domain.common.impl.Util.Pair;
import com.sap.sailing.domain.tracking.Wind;
import com.sap.sailing.simulator.WindControlParameters;
import com.sap.sailing.simulator.impl.TimedPositionWithSpeedImpl;
@@ -29,13 +30,14 @@ import com.sap.sailing.simulator.impl.WindFieldGeneratorOscillationImpl;
/**
* Test for @WindFieldGenerator
*
* @author Nidhi Sawhney(D054070)
*
*
*/
public class WindFieldGeneratorTest {
private static Logger logger = Logger.getLogger("com.sap.sailing");
@Test
public void testWindFieldGeneratorBasic() {
Position start = new DegreePosition(54.32447456461419, 10.15613079071045);
@@ -43,16 +45,16 @@ public class WindFieldGeneratorTest {
List<Position> course = new LinkedList<Position>();
course.add(start);
course.add(end);
WindControlParameters windParameters = new WindControlParameters(3, 180);
RectangularBoundary bd = new RectangularBoundary(start, end, 0.1);
WindFieldGeneratorImpl wf = new WindFieldGeneratorBlastImpl(bd, windParameters);
int hSteps = 10;
int vSteps = 5;
List<Position> positionList = bd.extractLattice(hSteps,vSteps);
assert(positionList.size() == hSteps*vSteps);
List<Position> positionList = bd.extractLattice(hSteps, vSteps);
assert (positionList.size() == hSteps * vSteps);
int index = 0;
for(Position p : positionList) {
for (Position p : positionList) {
logger.info("P" + ++index + ":" + p);
}
wf.setPositionGrid(bd.extractGrid(hSteps, vSteps));
@@ -62,12 +64,12 @@ public class WindFieldGeneratorTest {
assertEquals("Position Grid Number of Columns", hSteps, positionGrid[0].length);
for (int i = 0; i < vSteps; ++i) {
for (int j = 0; j < hSteps; ++j) {
logger.info("P["+i+"]["+j+"]:" + positionGrid[i][j]);
assertEquals("Map index check",positionGrid[i][j],wf.getPosition(i, j));
logger.info("P[" + i + "][" + j + "]:" + positionGrid[i][j]);
assertEquals("Map index check", positionGrid[i][j], wf.getPosition(i, j));
}
}
}
@Test
public void testWindFieldGeneratorOscillation() {
Position start = new DegreePosition(54.32447456461419, 10.15613079071045);
@@ -75,29 +77,112 @@ public class WindFieldGeneratorTest {
List<Position> course = new LinkedList<Position>();
course.add(start);
course.add(end);
WindControlParameters windParameters = new WindControlParameters(10, 180);
windParameters.leftWindSpeed = 70.0;
windParameters.middleWindSpeed = 80.0;
windParameters.rightWindSpeed = 90.0;
windParameters.frequency = 0.375;
windParameters.amplitude = 20.0;
RectangularBoundary bd = new RectangularBoundary(start, end, 0.1);
WindFieldGeneratorOscillationImpl wf = new WindFieldGeneratorOscillationImpl(bd, windParameters);
int hSteps = 30;
int vSteps = 15;
wf.setPositionGrid(bd.extractGrid(hSteps, vSteps));
Position[][] positionGrid = wf.getPositionsGrid();
TimePoint startTime = new MillisecondsTimePoint(0);
TimePoint timeStep = new MillisecondsTimePoint(30*1000);
wf.generate(startTime,null,timeStep);
TimePoint timeStep = new MillisecondsTimePoint(30 * 1000);
wf.generate(startTime, null, timeStep);
SpeedWithBearing speed = new KilometersPerHourSpeedWithBearingImpl(0, new DegreeBearingImpl(0));
for (int i = 0; i < vSteps; ++i) {
/*
* Check the speed & angle at the start time
*/
List<Wind> windList = new ArrayList<Wind>();
for (int i = 0; i < vSteps; ++i) {
for (int j = 0; j < hSteps; ++j) {
Wind localWind = wf.getWind(new TimedPositionWithSpeedImpl(startTime,positionGrid[i][j],speed));
logger.info("Wind["+i+"]["+j+"]" + localWind.toString());
Wind localWind = wf.getWind(new TimedPositionWithSpeedImpl(startTime, positionGrid[i][j], speed));
logger.info("Wind[" + i + "][" + j + "]" + localWind.toString());
windList.add(localWind);
}
}
assertEquals("Size of windList ", hSteps * vSteps, windList.size());
double epsilon = 1e-6;
// Check the speed
assertEquals("StartTime First Wind Speed ", 7, windList.get(0).getKnots(), 0);
assertEquals("StartTime Last Wind Speed in first row ", 9, windList.get(hSteps - 1).getKnots(), 0);
assertEquals("StartTime One before Middle Wind Speed ", 7.928571, windList.get(windList.size() / 2 - 2)
.getKnots(), epsilon);
assertEquals("StartTime Middle Wind Speed ", 8, windList.get(windList.size() / 2 - 1).getKnots(), 0);
assertEquals("StartTime Last Wind Speed ", windList.get(windList.size() - 1).getKnots(), 9, 0);
// Check the angle
assertEquals("StartTime First Wind Angle ", 0, windList.get(0).getBearing().getRadians(), 0);
Pair<Integer, Integer> pairIndex = getIndex(windList.size(), hSteps);
logger.info(pairIndex.toString());
assertEquals("StartTime One before Middle Wind Angle ", 0.3224948, windList.get(windList.size() / 2 - 2).getBearing()
.getRadians(), epsilon);
assertEquals("StartTime Middle Wind Angle ", 0.3224948, windList.get(windList.size() / 2 - 1).getBearing().getRadians(),
epsilon);
assertEquals("StartTime Last Wind Angle ", 0.2468268, windList.get(windList.size() - 1).getBearing().getRadians(), epsilon);
/**
* Check the speed at the next time
*/
/*
* Check the speed & angle at the next time point
*/
windList.clear();
for (int i = 0; i < vSteps; ++i) {
for (int j = 0; j < hSteps; ++j) {
Wind localWind = wf.getWind(new TimedPositionWithSpeedImpl(new MillisecondsTimePoint(startTime
.asMillis() + timeStep.asMillis()), positionGrid[i][j], speed));
logger.info("Wind[" + i + "][" + j + "]" + localWind.toString());
windList.add(localWind);
}
}
assertEquals("Size of windList ", hSteps * vSteps, windList.size());
// Check the speed
assertEquals("One Time Unit First Wind Speed ", windList.get(0).getKnots(), 7, 0);
assertEquals("One Time Unit One before Middle Wind Speed ", windList.get(windList.size() / 2 - 2).getKnots(),
7.928571, epsilon);
assertEquals("One Time Unit Middle Wind Speed ", windList.get(windList.size() / 2 - 1).getKnots(), 8, 0);
assertEquals("One Time Unit Last Wind Speed ", windList.get(windList.size() - 1).getKnots(), 9, 0);
// Check the angle
assertEquals("One Time Unit First Wind Angle ",0.2019944, windList.get(0).getBearing().getRadians(), epsilon);
assertEquals("One Time Unit One before Middle Wind Speed ", -0.1857142, windList.get(windList.size() / 2 - 2).getBearing()
.getRadians(), epsilon);
assertEquals("One Time Unit Middle Wind Speed ",-0.1857142, windList.get(windList.size() / 2 - 1).getBearing()
.getRadians(), epsilon);
assertEquals("One Time Unit Last Wind Speed ", -0.3441339, windList.get(windList.size() - 1).getBearing().getRadians(),
epsilon);
}
private Pair<Integer, Integer> getIndex(int listIndex, int numCols) {
Pair<Integer, Integer> indexPair = new Pair<Integer, Integer>(1 + (listIndex - 1) / numCols, 1
+ (listIndex - 1) % numCols);
return indexPair;
}
@Test
public void testIndex() {
Pair<Integer, Integer> pairIndex = getIndex(1, 30);
assertEquals("Index 1 RowIndex ", 1, (int) pairIndex.getA());
assertEquals("Index 1 ColIndex ", 1, (int) pairIndex.getB());
pairIndex = getIndex(30, 30);
assertEquals("Index 30 RowIndex ", 1, (int) pairIndex.getA());
assertEquals("Index 30 ColIndex ", 30, (int) pairIndex.getB());
pairIndex = getIndex(31, 30);
assertEquals("Index 31 RowIndex ", 2, (int) pairIndex.getA());
assertEquals("Index 31 ColIndex ", 1, (int) pairIndex.getB());
pairIndex = getIndex(450, 30);
assertEquals("Index 450 RowIndex ", 15, (int) pairIndex.getA());
assertEquals("Index 450 ColIndex ", 30, (int) pairIndex.getB());
}
}
java/com.sap.sailing.simulator/src/com/sap/sailing/simulator/impl/WindFieldGeneratorOscillationImpl.java
+4 -4
View File
@@ -1,8 +1,8 @@
package com.sap.sailing.simulator.impl;
import com.sap.sailing.domain.base.SpeedWithBearing;
import com.sap.sailing.domain.base.impl.KilometersPerHourSpeedWithBearingImpl;
import com.sap.sailing.domain.base.impl.KnotSpeedImpl;
import com.sap.sailing.domain.base.impl.KnotSpeedWithBearingImpl;
import com.sap.sailing.domain.common.Bearing;
import com.sap.sailing.domain.common.Position;
import com.sap.sailing.domain.common.Speed;
@@ -19,7 +19,7 @@ import com.sap.sailing.simulator.impl.WindFieldGeneratorImpl;
public class WindFieldGeneratorOscillationImpl extends WindFieldGeneratorImpl implements WindFieldGenerator {
/* Currectly the speed is time and vertical step invariant, it only changes along the horizontal
/* Currently the speed is time and vertical step invariant, it only changes along the horizontal
* direction*/
private Speed[] speed;
@@ -77,7 +77,6 @@ public class WindFieldGeneratorOscillationImpl extends WindFieldGeneratorImpl im
Bearing phi0 = new DegreeBearingImpl(windParameters.baseWindBearing);
phi0 = phi0.reverse();
double vStep = 1.0/(positions.length-1);
logger.info("Nrows:"+ positions.length + " vstep:"+vStep);
double t = (timeIndex+(timeIndex+rowIndex)*vStep);
Bearing angle = new DegreeBearingImpl(Math.sin(2*Math.PI*t*windParameters.frequency)*windParameters.amplitude);
angle.add(phi0);
@@ -92,7 +91,8 @@ public class WindFieldGeneratorOscillationImpl extends WindFieldGeneratorImpl im
@Override
public Wind getWind(TimedPosition timedPosition) {
SpeedWithBearing wspeed = new KilometersPerHourSpeedWithBearingImpl(getSpeed(timedPosition).getKilometersPerHour(),
Speed speed = getSpeed(timedPosition);
SpeedWithBearing wspeed = new KnotSpeedWithBearingImpl(speed.getKnots(),
getBearing(timedPosition));
return new WindImpl(timedPosition.getPosition(), timedPosition.getTimePoint(), wspeed);