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com.supermap.data

Class PointM

  • java.lang.Object
    • com.supermap.data.PointM

  • public class PointM
extends java.lang.Object
    The PointM class. The precision is double.

    The pointM is the point with linear measure value. M indicates the measure value.

    • Constructor Summary

      Constructors 
      Constructor and Description
      PointM()
      Constructs a new PointM object.
      PointM(double x, double y, double m)
      Creates a new PointM object according to the specified arguments.
      PointM(PointM pointM)
      Constructs a new object identical to the given PointM object.

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method and Description
      PointM clone()
      Returns a copy of the current PointM object.
      boolean equals(java.lang.Object obj)
      Specifies whether this PointM structure object has the same value, including X, Y and M, with the specified PointM object.
      static PointM getEMPTY()
      Returns a null PointM object.
      double getM()
      Returns the measure value of the {PointM} structure object.
      double getX()
      Returns the X coordinate of the {PointM} structure object.
      double getY()
      Returns the Y coordinate of the {PointM} structure object.
      int hashCode()
      Gets the hash code of this PointM.
      boolean isEmpty()
      Returns a Boolean value that indicates whether this PointM is empty or not.
      void setM(double value)
      Sets the measure value of the {PointM} structure object.
      void setX(double value)
      Sets the X coordinate of the {PointM} structure object.
      void setY(double value)
      Sets the Y coordinate of the {PointM} structure object.
      java.lang.String toString()
      Creates a readable string indicates the structure object.

      • Methods inherited from class java.lang.Object

        getClass, notify, notifyAll, wait, wait, wait

    • Constructor Detail

      • PointM

        public PointM()
        Constructs a new PointM object.

      • PointM

        public PointM(double x,
              double y,
              double m)
        Creates a new PointM object according to the specified arguments.
        Parameters:
        x - The X coordinate of the PointM structure object.
        y - The X coordinate of the PointM structure object.
        m - The measure value of the PointM object.

      • PointM

        public PointM(PointM pointM)
        Constructs a new object identical to the given PointM object.
        Parameters:
        pointM - The specified PointM object.

    • Method Detail

      • getEMPTY

        public static final PointM getEMPTY()
        Returns a null PointM object. (That is X = Double.MIN_VALUE,Y = Double.MIN_VALUE,M = Double.MIN_VALUE)
        Returns:
        an empty PointM object.
        Example:
        The code below demonstrates how to create an empty PointM object. 
         public void getEMPTYTest(){
        // Constructs an empty route point object
        PointM pointM2 = PointM.getEMPTY();
        System.out.println(pointM2.isEmpty()); // true
    }

      • isEmpty

        public boolean isEmpty()
        Returns a Boolean value that indicates whether this PointM is empty or not.
        Returns:
        a boolean, whether the object is null.
        Default:
        The default value is true.

      • getX

        public double getX()
        Returns the X coordinate of the {PointM} structure object.
        Returns:
        The X coordinate of the PointM structure object.
        Default:
        The default value is -1.7976931348623157e+308

      • setX

        public void setX(double value)
        Sets the X coordinate of the {PointM} structure object.
        Parameters:
        value - The X coordinate of the PointM structure object.

      • getY

        public double getY()
        Returns the Y coordinate of the {PointM} structure object.
        Returns:
        The Y coordinate of the PointM structure object.
        Default:
        The default value is -1.7976931348623157e+308

      • setY

        public void setY(double value)
        Sets the Y coordinate of the {PointM} structure object.
        Parameters:
        value - The Y coordinate of the PointM structure object.

      • getM

        public double getM()
        Returns the measure value of the {PointM} structure object.
        Returns:
        The measure value of the PointM structure object.
        Default:
        The default value is -1.7976931348623157e+308

      • setM

        public void setM(double value)
        Sets the measure value of the {PointM} structure object.
        Parameters:
        value - The measure value of the PointM structure object.

      • clone

        public PointM clone()
        Returns a copy of the current PointM object.
        Overrides:
        clone in class java.lang.Object
        Returns:
        The new PointM object generated from the clone operation.
        Example:
        The following code demonstrates how to clone a PointM object and determines whether it is equal to the origin route point. 
         public void cloneTest(){
        // Constructs a route point, M represents the measure value of routing point
        PointM pointM = new PointM(100, 100, 60);
        System.out.println(pointM); // {X=100.0,Y=100.0,M=60.0}

        // clone
        PointM pointM1 = (PointM) pointM.clone();
        System.out.println(pointM1); // {X=100.0,Y=100.0,M=60.0}

        // Determines whether the cloned point is the same as the original routing point
        System.out.println(pointM.equals(pointM1)); // false
    }

      • equals

        public boolean equals(java.lang.Object obj)
        Specifies whether this PointM structure object has the same value, including X, Y and M, with the specified PointM object.
        Overrides:
        equals in class java.lang.Object
        Parameters:
        obj - the specified PointM object.
        Returns:
        true if the return values of the getX(), getY() and getM() of the given {PointM} object equals the that of this PointM object.
        Example:
        See the sample of PointM.clone() method.

      • hashCode

        public int hashCode()
        Gets the hash code of this PointM.
        Overrides:
        hashCode in class java.lang.Object
        Returns:
        the hash code of this PointM object.

      • toString

        public java.lang.String toString()
        Creates a readable string indicates the structure object. For example, the object is PointM(2,3,4) , the corresponding string is "{X=2.0,Y=3.0,M=4.0}".
        Overrides:
        toString in class java.lang.Object
        Returns:
        A readable string represent this PointM structure object.
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