Package il.ac.idc.jdt

Class Point

java.lang.Object
il.ac.idc.jdt.Point
All Implemented Interfaces:
Serializable, Comparable<Point>
public class Point extends Object implements Comparable<Point>, Serializable
This class represents a 3D point, with some simple geometric methods (pointLineTest).
See Also:

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final int
    BEHINDB
     
    static final int
    ERROR
     
    static final int
    INFRONTOFA
     
    static final int
    LEFT
     
    static final int
    ONSEGMENT
     
    static final int
    RIGHT
     

  • Constructor Summary

    Constructors
    Constructor
    Description
    Point()
    Default Constructor.
    Point(double x, double y)
    constructs a 3D point with a z value of 0.
    Point(double x, double y, double z)
    constructs a 3D point
    Point(Point p)
    simple copy constructor

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    compareTo(Point o)
     
    double
    distance(Point p)
     
    double
    distance3D(Point p)
     
    boolean
    equals(Object obj)
    return true iff this point [x,y] coordinates are the same as p [x,y] coordinates.
    double
    getX()
    returns the x-coordinate of this point.
    double
    getY()
    returns the y-coordinate of this point.
    double
    getZ()
    returns the z-coordinate of this point.
    int
    hashCode()
     
    int
    pointLineTest(Point a, Point b)
    tests the relation between this point (as a 2D [x,y] point) and a 2D segment a,b (the Z values are ignored), returns one of the following: LEFT, RIGHT, INFRONTOFA, BEHINDB, ONSEGMENT
    void
    setX(double x)
    Sets the x coordinate.
    void
    setY(double y)
    Sets the y coordinate.
    void
    setZ(double z)
    Sets the z coordinate.
    String
    toString()
     

    Methods inherited from class java.lang.Object

    clone, finalize, getClass, notify, notifyAll, wait, wait, wait

  • Field Details

  • Constructor Details

    • Point

      public Point()
      Default Constructor.
      constructs a 3D point at (0,0,0).

    • Point

      public Point(double x, double y, double z)
      constructs a 3D point

    • Point

      public Point(double x, double y)
      constructs a 3D point with a z value of 0.

    • Point

      public Point(Point p)
      simple copy constructor

  • Method Details

    • getX

      public double getX()
      returns the x-coordinate of this point.

    • setX

      public void setX(double x)
      Sets the x coordinate.
      Parameters:
      x - The new x coordinate.

    • getY

      public double getY()
      returns the y-coordinate of this point.

    • setY

      public void setY(double y)
      Sets the y coordinate.
      Parameters:
      y - The new y coordinate.

    • getZ

      public double getZ()
      returns the z-coordinate of this point.

    • setZ

      public void setZ(double z)
      Sets the z coordinate.
      Parameters:
      z - The new z coordinate.

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • distance

      public double distance(Point p)
      Returns:
      the L2 distanse NOTE: 2D only!!!

    • distance3D

      public double distance3D(Point p)
      Returns:
      the L2 distanse NOTE: 3D only!!!

    • pointLineTest

      public int pointLineTest(Point a, Point b)
      tests the relation between this point (as a 2D [x,y] point) and a 2D segment a,b (the Z values are ignored), returns one of the following: LEFT, RIGHT, INFRONTOFA, BEHINDB, ONSEGMENT
      Parameters:
      a - the first point of the segment.
      b - the second point of the segment.
      Returns:
      the value (flag) of the relation between this point and the a,b line-segment.

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object

    • equals

      public boolean equals(Object obj)
      return true iff this point [x,y] coordinates are the same as p [x,y] coordinates. (the z value is ignored).
      Overrides:
      equals in class Object

    • compareTo

      public int compareTo(Point o)
      Specified by:
      compareTo in interface Comparable<Point>