Added new module for Java API

modules/java/srcjava/Point3.java

@@ -0,0 +1,56 @@
+package org.opencv;
+
+public class Point3 {
+
+	public double x, y, z;
+
+	public Point3(double x, double y, double z) {
+		this.x = x;
+		this.y = y;
+		this.z = z;
+	}
+
+	public Point3() {
+		this(0, 0, 0);
+	}
+
+	public Point3(Point p) {
+		x = p.x;
+		y = p.y;
+		z = 0;
+	}
+
+	public Point3 clone() {
+		return new Point3(x, y, z);
+	}
+
+	public double dot(Point3 p) {
+		return x * p.x + y * p.y + z * p.z;
+	}
+
+	public Point3 cross(Point3 p) {
+		return new Point3(y * p.z - z * p.y, z * p.x - x * p.z, x * p.y - y * p.x);
+	}
+
+	@Override
+	public int hashCode() {
+		final int prime = 31;
+		int result = 1;
+		long temp;
+		temp = Double.doubleToLongBits(x);
+		result = prime * result + (int) (temp ^ (temp >>> 32));
+		temp = Double.doubleToLongBits(y);
+		result = prime * result + (int) (temp ^ (temp >>> 32));
+		temp = Double.doubleToLongBits(z);
+		result = prime * result + (int) (temp ^ (temp >>> 32));
+		return result;
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (this == obj) return true;
+		if (!(obj instanceof Point3)) return false;
+		Point3 it = (Point3) obj;
+		return x == it.x && y == it.y && z == it.z;
+	}
+}