Class GridPoint

java.lang.Object
Jcg.geometry.GridPoint
public class GridPoint extends Object
A class for representing a 2D point (a cell) on an integer grid.
Author:
Luca Castelli Aleardi (jan 2021)

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    int
    index
    an integer useful for indexing this point: for instance, 'index' can be the number of a vertex
    private int
    x
    integer coordinates of the point on the grid
    private int
    y
    integer coordinates of the point on the grid

  • Constructor Summary

    Constructors
    Constructor
    Description
    GridPoint()
    Initialize an empty point
    GridPoint(int x, int y)
    Initialize an integer point having coordinates (x, y)
    GridPoint(GridPoint p)
    Make a copy of a point q

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    dimension()
     
    boolean
    equals(Object o)
    Check whether two points have equal coordinates
    double
    euclideanDistance(GridPoint p)
    Return the Euclidean distance between the current point 'this' and a point 'p'
    int
    getCartesian(int dim)
    Return the d-th coordinate of the point
    int
    getX()
    Return the x-coordinate
    int
    getY()
    Return the y-coordinate
    int
    hashCode()
     
    int
    manhattanDistance(GridPoint p)
    Return the Manhattan distance between the current point 'this' and a point 'p'
    void
    setCartesian(int dim, int x)
    Set the d-th coordinate of the point
    void
    setOrigin()
     
    void
    setX(int x)
    Set the x-coordinate
    void
    setY(int y)
    Set the y-coordinate
    int
    squareEuclideanDistance(GridPoint p)
    Return the square of the Euclidean distance between the current point 'this' and a point 'p'
    String
    toString()
     
    void
    translateOf(int dx, int dy)
    Translate the current point of the vector (dx, dy)

    Methods inherited from class java.lang.Object

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

  • Field Details

    • index

      public int index
      an integer useful for indexing this point: for instance, 'index' can be the number of a vertex

    • x

      private int x
      integer coordinates of the point on the grid

    • y

      private int y
      integer coordinates of the point on the grid

  • Constructor Details

    • GridPoint

      public GridPoint()
      Initialize an empty point

    • GridPoint

      public GridPoint(int x, int y)
      Initialize an integer point having coordinates (x, y)

    • GridPoint

      public GridPoint(GridPoint p)
      Make a copy of a point q

  • Method Details

    • getX

      public int getX()
      Return the x-coordinate

    • getY

      public int getY()
      Return the y-coordinate

    • setX

      public void setX(int x)
      Set the x-coordinate

    • setY

      public void setY(int y)
      Set the y-coordinate

    • translateOf

      public void translateOf(int dx, int dy)
      Translate the current point of the vector (dx, dy)

    • equals

      public boolean equals(Object o)
      Check whether two points have equal coordinates
      Overrides:
      equals in class Object

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object

    • euclideanDistance

      public double euclideanDistance(GridPoint p)
      Return the Euclidean distance between the current point 'this' and a point 'p'

    • manhattanDistance

      public int manhattanDistance(GridPoint p)
      Return the Manhattan distance between the current point 'this' and a point 'p'

    • squareEuclideanDistance

      public int squareEuclideanDistance(GridPoint p)
      Return the square of the Euclidean distance between the current point 'this' and a point 'p'

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • dimension

      public int dimension()

    • getCartesian

      public int getCartesian(int dim)
      Return the d-th coordinate of the point

    • setCartesian

      public void setCartesian(int dim, int x)
      Set the d-th coordinate of the point

    • setOrigin

      public void setOrigin()