content: package org.opencv.core;
  
  //javadoc:Point3_
  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(double[] vals) {
          this();
          set(vals);
      }
  
      public void set(double[] vals) {
          if (vals != null) {
              x = vals.length > 0 ? vals[0] : 0;
              y = vals.length > 1 ? vals[1] : 0;
              z = vals.length > 2 ? vals[2] : 0;
          } else {
              x = 0;
              y = 0;
              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;
      }
  
      @Override
      public String toString() {
          return "{" + x + ", " + y + ", " + z + "}";
      }
  }
  