Class Vector

  • All Implemented Interfaces:
    Cloneable, ConfigurationSerializable
    Direct Known Subclasses:
    BlockVector

    public class Vector
    extends Object
    implements Cloneable, ConfigurationSerializable
    Represents a mutable vector. Because the components of Vectors are mutable, storing Vectors long term may be dangerous if passing code modifies the Vector later. If you want to keep around a Vector, it may be wise to call clone() in order to get a copy.
    • Field Summary

      Fields 
      Modifier and Type Field Description
      protected double x  
      protected double y  
      protected double z  
    • Constructor Summary

      Constructors 
      Constructor Description
      Vector()
      Construct the vector with all components as 0.
      Vector​(double x, double y, double z)
      Construct the vector with provided double components.
      Vector​(float x, float y, float z)
      Construct the vector with provided float components.
      Vector​(int x, int y, int z)
      Construct the vector with provided integer components.
    • Field Detail

      • x

        protected double x
      • y

        protected double y
      • z

        protected double z
    • Constructor Detail

      • Vector

        public Vector()
        Construct the vector with all components as 0.
      • Vector

        public Vector​(int x,
                      int y,
                      int z)
        Construct the vector with provided integer components.
        Parameters:
        x - X component
        y - Y component
        z - Z component
      • Vector

        public Vector​(double x,
                      double y,
                      double z)
        Construct the vector with provided double components.
        Parameters:
        x - X component
        y - Y component
        z - Z component
      • Vector

        public Vector​(float x,
                      float y,
                      float z)
        Construct the vector with provided float components.
        Parameters:
        x - X component
        y - Y component
        z - Z component
    • Method Detail

      • add

        public Vector add​(Vector vec)
        Adds a vector to this one
        Parameters:
        vec - The other vector
        Returns:
        the same vector
      • subtract

        public Vector subtract​(Vector vec)
        Subtracts a vector from this one.
        Parameters:
        vec - The other vector
        Returns:
        the same vector
      • multiply

        public Vector multiply​(Vector vec)
        Multiplies the vector by another.
        Parameters:
        vec - The other vector
        Returns:
        the same vector
      • divide

        public Vector divide​(Vector vec)
        Divides the vector by another.
        Parameters:
        vec - The other vector
        Returns:
        the same vector
      • copy

        public Vector copy​(Vector vec)
        Copies another vector
        Parameters:
        vec - The other vector
        Returns:
        the same vector
      • length

        public double length()
        Gets the magnitude of the vector, defined as sqrt(x^2+y^2+z^2). The value of this method is not cached and uses a costly square-root function, so do not repeatedly call this method to get the vector's magnitude. NaN will be returned if the inner result of the sqrt() function overflows, which will be caused if the length is too long.
        Returns:
        the magnitude
      • lengthSquared

        public double lengthSquared()
        Gets the magnitude of the vector squared.
        Returns:
        the magnitude
      • distance

        public double distance​(Vector o)
        Get the distance between this vector and another. The value of this method is not cached and uses a costly square-root function, so do not repeatedly call this method to get the vector's magnitude. NaN will be returned if the inner result of the sqrt() function overflows, which will be caused if the distance is too long.
        Parameters:
        o - The other vector
        Returns:
        the distance
      • distanceSquared

        public double distanceSquared​(Vector o)
        Get the squared distance between this vector and another.
        Parameters:
        o - The other vector
        Returns:
        the distance
      • angle

        public float angle​(Vector other)
        Gets the angle between this vector and another in radians.
        Parameters:
        other - The other vector
        Returns:
        angle in radians
      • midpoint

        public Vector midpoint​(Vector other)
        Sets this vector to the midpoint between this vector and another.
        Parameters:
        other - The other vector
        Returns:
        this same vector (now a midpoint)
      • getMidpoint

        public Vector getMidpoint​(Vector other)
        Gets a new midpoint vector between this vector and another.
        Parameters:
        other - The other vector
        Returns:
        a new midpoint vector
      • multiply

        public Vector multiply​(int m)
        Performs scalar multiplication, multiplying all components with a scalar.
        Parameters:
        m - The factor
        Returns:
        the same vector
      • multiply

        public Vector multiply​(double m)
        Performs scalar multiplication, multiplying all components with a scalar.
        Parameters:
        m - The factor
        Returns:
        the same vector
      • multiply

        public Vector multiply​(float m)
        Performs scalar multiplication, multiplying all components with a scalar.
        Parameters:
        m - The factor
        Returns:
        the same vector
      • dot

        public double dot​(Vector other)
        Calculates the dot product of this vector with another. The dot product is defined as x1*x2+y1*y2+z1*z2. The returned value is a scalar.
        Parameters:
        other - The other vector
        Returns:
        dot product
      • crossProduct

        public Vector crossProduct​(Vector o)
        Calculates the cross product of this vector with another. The cross product is defined as:
        • x = y1 * z2 - y2 * z1
        • y = z1 * x2 - z2 * x1
        • z = x1 * y2 - x2 * y1
        Parameters:
        o - The other vector
        Returns:
        the same vector
      • getCrossProduct

        public Vector getCrossProduct​(Vector o)
        Calculates the cross product of this vector with another without mutating the original. The cross product is defined as:
        • x = y1 * z2 - y2 * z1
        • y = z1 * x2 - z2 * x1
        • z = x1 * y2 - x2 * y1
        Parameters:
        o - The other vector
        Returns:
        a new vector
      • normalize

        public Vector normalize()
        Converts this vector to a unit vector (a vector with length of 1).
        Returns:
        the same vector
      • zero

        public Vector zero()
        Zero this vector's components.
        Returns:
        the same vector
      • isInAABB

        public boolean isInAABB​(Vector min,
                                Vector max)
        Returns whether this vector is in an axis-aligned bounding box.

        The minimum and maximum vectors given must be truly the minimum and maximum X, Y and Z components.

        Parameters:
        min - Minimum vector
        max - Maximum vector
        Returns:
        whether this vector is in the AABB
      • isInSphere

        public boolean isInSphere​(Vector origin,
                                  double radius)
        Returns whether this vector is within a sphere.
        Parameters:
        origin - Sphere origin.
        radius - Sphere radius
        Returns:
        whether this vector is in the sphere
      • getX

        public double getX()
        Gets the X component.
        Returns:
        The X component.
      • getBlockX

        public int getBlockX()
        Gets the floored value of the X component, indicating the block that this vector is contained with.
        Returns:
        block X
      • getY

        public double getY()
        Gets the Y component.
        Returns:
        The Y component.
      • getBlockY

        public int getBlockY()
        Gets the floored value of the Y component, indicating the block that this vector is contained with.
        Returns:
        block y
      • getZ

        public double getZ()
        Gets the Z component.
        Returns:
        The Z component.
      • getBlockZ

        public int getBlockZ()
        Gets the floored value of the Z component, indicating the block that this vector is contained with.
        Returns:
        block z
      • setX

        public Vector setX​(int x)
        Set the X component.
        Parameters:
        x - The new X component.
        Returns:
        This vector.
      • setX

        public Vector setX​(double x)
        Set the X component.
        Parameters:
        x - The new X component.
        Returns:
        This vector.
      • setX

        public Vector setX​(float x)
        Set the X component.
        Parameters:
        x - The new X component.
        Returns:
        This vector.
      • setY

        public Vector setY​(int y)
        Set the Y component.
        Parameters:
        y - The new Y component.
        Returns:
        This vector.
      • setY

        public Vector setY​(double y)
        Set the Y component.
        Parameters:
        y - The new Y component.
        Returns:
        This vector.
      • setY

        public Vector setY​(float y)
        Set the Y component.
        Parameters:
        y - The new Y component.
        Returns:
        This vector.
      • setZ

        public Vector setZ​(int z)
        Set the Z component.
        Parameters:
        z - The new Z component.
        Returns:
        This vector.
      • setZ

        public Vector setZ​(double z)
        Set the Z component.
        Parameters:
        z - The new Z component.
        Returns:
        This vector.
      • setZ

        public Vector setZ​(float z)
        Set the Z component.
        Parameters:
        z - The new Z component.
        Returns:
        This vector.
      • equals

        public boolean equals​(Object obj)
        Checks to see if two objects are equal.

        Only two Vectors can ever return true. This method uses a fuzzy match to account for floating point errors. The epsilon can be retrieved with epsilon.

        Overrides:
        equals in class Object
      • hashCode

        public int hashCode()
        Returns a hash code for this vector
        Overrides:
        hashCode in class Object
        Returns:
        hash code
      • clone

        public Vector clone()
        Get a new vector.
        Overrides:
        clone in class Object
        Returns:
        vector
      • toString

        public String toString()
        Returns this vector's components as x,y,z.
        Overrides:
        toString in class Object
      • toLocation

        public Location toLocation​(World world)
        Gets a Location version of this vector with yaw and pitch being 0.
        Parameters:
        world - The world to link the location to.
        Returns:
        the location
      • toLocation

        public Location toLocation​(World world,
                                   float yaw,
                                   float pitch)
        Gets a Location version of this vector.
        Parameters:
        world - The world to link the location to.
        yaw - The desired yaw.
        pitch - The desired pitch.
        Returns:
        the location
      • toBlockVector

        public BlockVector toBlockVector()
        Get the block vector of this vector.
        Returns:
        A block vector.
      • getEpsilon

        public static double getEpsilon()
        Get the threshold used for equals().
        Returns:
        The epsilon.
      • getMinimum

        public static Vector getMinimum​(Vector v1,
                                        Vector v2)
        Gets the minimum components of two vectors.
        Parameters:
        v1 - The first vector.
        v2 - The second vector.
        Returns:
        minimum
      • getMaximum

        public static Vector getMaximum​(Vector v1,
                                        Vector v2)
        Gets the maximum components of two vectors.
        Parameters:
        v1 - The first vector.
        v2 - The second vector.
        Returns:
        maximum
      • getRandom

        public static Vector getRandom()
        Gets a random vector with components having a random value between 0 and 1.
        Returns:
        A random vector.