some classes moved to common

src/main/java/org/solovyev/util/math/MathUtils.java

@@ -1,102 +0,0 @@
-package org.solovyev.util.math;
-
-import org.jetbrains.annotations.NotNull;
-
-import java.util.List;
-
-public class MathUtils {
-
-	public static final float MIN_AMOUNT = 0.05f;
-
-	public static double round(@NotNull Double value, int numberOfFractionDigits) {
-		double roundFactor = Math.pow(10, numberOfFractionDigits);
-
-		if (value < Double.MAX_VALUE / roundFactor) {
-			return ((double)Math.round(value * roundFactor)) / roundFactor;
-		} else {
-			return value;
-		}
-	}
-
-	public static float getDistance(@NotNull Point2d startPoint,
-									@NotNull Point2d endPoint) {
-		return getNorm(subtract(endPoint, startPoint));
-	}
-
-	public static Point2d subtract(@NotNull Point2d p1, @NotNull Point2d p2) {
-		return new Point2d(p1.getX() - p2.getX(), p1.getY() - p2.getY());
-	}
-
-	public static Point2d sum(@NotNull Point2d p1, @NotNull Point2d p2) {
-		return new Point2d(p1.getX() + p2.getX(), p1.getY() + p2.getY());
-	}
-
-	public static float getNorm(@NotNull Point2d point) {
-		return (float) Math.pow(
-				Math.pow(point.getX(), 2) + Math.pow(point.getY(), 2), 0.5);
-	}
-
-	public static float getAngle(@NotNull Point2d startPoint,
-								 @NotNull Point2d axisEndPoint, @NotNull Point2d endPoint) {
-		final Point2d axisVector = subtract(axisEndPoint, startPoint);
-		final Point2d vector = subtract(endPoint, startPoint);
-
-		double a_2 = Math.pow(getDistance(vector, axisVector), 2);
-		double b = getNorm(vector);
-		double b_2 = Math.pow(b, 2);
-		double c = getNorm(axisVector);
-		double c_2 = Math.pow(c, 2);
-
-		return (float) Math.acos((-a_2 + b_2 + c_2) / (2 * b * c));
-	}
-
-	public static double countMean(@NotNull List<Double> objects) {
-
-		double sum = 0d;
-		for (Double object : objects) {
-			sum += object;
-		}
-
-		return objects.size() == 0 ? 0d : (sum / objects.size());
-	}
-
-	public static double countStandardDeviation(@NotNull Double mean, @NotNull List<Double> objects) {
-		double sum = 0d;
-
-		for (Double object : objects) {
-			sum += Math.pow(object - mean, 2);
-		}
-
-		return objects.size() == 0 ? 0d : Math.sqrt(sum / objects.size());
-	}
-
-	public static StatData getStatData(@NotNull List<Double> objects) {
-
-		final double mean = countMean(objects);
-		final double standardDeviation = countStandardDeviation(mean, objects);
-
-		return new StatData(mean, standardDeviation);
-	}
-
-	public static class StatData {
-
-		private final double mean;
-
-		private final double standardDeviation;
-
-		public StatData(double mean, double standardDeviation) {
-			this.mean = mean;
-			this.standardDeviation = standardDeviation;
-		}
-
-		public double getMean() {
-			return mean;
-		}
-
-		public double getStandardDeviation() {
-			return standardDeviation;
-		}
-
-	}
-
-}

src/main/java/org/solovyev/util/math/Point2d.java

@@ -1,37 +0,0 @@
-package org.solovyev.util.math;
-
-public class Point2d {
-	
-	private float x = 0;
-	
-	private float y = 0;
-	
-	public Point2d() {
-	}
-	
-	public Point2d( float x, float y ) {
-		this.x = x;
-		this.y = y;
-	}
-
-	public float getX() {
-		return x;
-	}
-
-	public void setX(float x) {
-		this.x = x;
-	}
-
-	public float getY() {
-		return y;
-	}
-
-	public void setY(float y) {
-		this.y = y;
-	}
-
-	@Override
-	public String toString() {
-		return "Point2d [x=" + x + ", y=" + y + "]";
-	}
-}