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Implemented and tested the new wind chart recalculation algorithm

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Lennart Hensler committed 2014-04-20 18:34:48 +02:00
1 parent f0daeec314
commit f6b8f8c427
3 files changed
+45 -39
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java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/ui/client/shared/charts/ChartPointRecalculator.java
+17 -21
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@@ -9,28 +9,24 @@ public final class ChartPointRecalculator {
public static Point stayClosestToPreviousPoint(Point previousPoint, Point newPoint) {
double previousY = previousPoint.getY().doubleValue();
double newY = newPoint.getY().doubleValue();
double deltaPreviousNew = Math.abs(previousY - newY);
double deltaPreviosNewUp = Math.abs(previousY - (newY + 360));
double deltaPreviosNewDown = Math.abs(previousY - (newY - 360));
if (isStrictlyLessThan(deltaPreviosNewUp, deltaPreviousNew, deltaPreviosNewDown)) {
return new Point(newPoint.getX(), newPoint.getY().doubleValue() + 360);
}
if (isStrictlyLessThan(deltaPreviosNewDown, deltaPreviousNew, deltaPreviosNewUp)) {
return new Point(newPoint.getX(), newPoint.getY().doubleValue() - 360);
}
return newPoint;
}
private static boolean isStrictlyLessThan(double valueToCheck, double... valuesToCompare) {
for (double value : valuesToCompare) {
if (value <= valueToCheck) {
return false;
double bestNewY = newY;
boolean hasBeenMoved;
do {
hasBeenMoved = false;
double deltaPreviousYToNewY = Math.abs(previousY - bestNewY);
double deltaPreviousYToNewYUp = Math.abs(previousY - (bestNewY + 360));
double deltaPreviousYToNewYDown = Math.abs(previousY - (bestNewY - 360));
if (deltaPreviousYToNewYUp < deltaPreviousYToNewY ||
deltaPreviousYToNewYDown < deltaPreviousYToNewY) {
bestNewY = deltaPreviousYToNewYUp <= deltaPreviousYToNewYDown ?
bestNewY + 360 : bestNewY - 360;
hasBeenMoved = true;
}
}
return true;
} while (hasBeenMoved);
return new Point(newPoint.getX(), bestNewY);
}
public static Point keepOverallDeltaMinimal(Double yMin, Double yMax, Point newPoint) {