sims.geometry

Vector2D

class Vector2D(x: Double, y: Double) extends Product

A 2D vector.

x

1st component

y

2nd component

Inherits

  1. Product
  2. Equals
  3. AnyRef
  4. Any

Value Members

  1. def *(n: Double): Vector2D

    Scalar multiplication

    Scalar multiplication.

  2. def +(v: Vector2D): Vector2D

    Vector addition

    Vector addition.

  3. def -(v: Vector2D): Vector2D

    Vector substraction

    Vector substraction.

  4. def /(n: Double): Vector2D

    Scalar division

    Scalar division.

  5. def canEqual(arg0: Any): Boolean

  6. def components: List[Double]

    Returns a list of this vector's components

    Returns a list of this vector's components.

  7. def cross(v: Vector2D): Double

    Cross product

    Cross product. Length only because in 2D. The direction would be given by the x3-axis.

  8. def dot(v: Vector2D): Double

    Dot product

    Dot product.

  9. def equals(arg0: Any): Boolean

    This method is used to compare the receiver object (this) with the argument object (arg0) for equivalence

    This method is used to compare the receiver object (this) with the argument object (arg0) for equivalence.

    The default implementations of this method is an equivalence relation:

    • It is reflexive: for any instance x of type Any, x.equals(x) should return true.
    • It is symmetric: for any instances x and y of type Any, x.equals(y) should return true if and only if y.equals(x) returns true.
    • It is transitive: for any instances x, y, and z of type AnyRef if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.

    If you override this method, you should verify that your implementation remains an equivalence relation. Additionally, when overriding this method it is often necessary to override hashCode to ensure that objects that are "equal" (o1.equals(o2) returns true) hash to the same Int (o1.hashCode.equals(o2.hashCode)).

    arg0

    the object to compare against this object for equality.

    returns

    true if the receiver object is equivalent to the argument; false otherwise.

  10. def hashCode(): Int

    Returns a hash code value for the object

    Returns a hash code value for the object.

    The default hashing algorithm is platform dependent.

    Note that it is allowed for two objects to have identical hash codes (o1.hashCode.equals(o2.hashCode)) yet not be equal (o1.equals(o2) returns false). A degenerate implementation could always return 0. However, it is required that if two objects are equal (o1.equals(o2) returns true) that they have identical hash codes (o1.hashCode.equals(o2.hashCode)). Therefore, when overriding this method, be sure to verify that the behavior is consistent with the equals method.

  11. def isNull: Boolean

    Checks if this vector is the null vector

    Checks if this vector is the null vector.

  12. def leftNormal: Vector2D

    Left normal vector

    Left normal vector. (-y, x)

  13. val length: Double

    Norm or length of this vector

    Norm or length of this vector.

  14. def productArity: Int

  15. def productElement(arg0: Int): Any

  16. def productElements: Iterator[Any]

  17. def productIterator: Iterator[Any]

  18. def productPrefix: String

  19. def project(v: Vector2D): Vector2D

    Returns the projection of this vector onto the vector v

    Returns the projection of this vector onto the vector v.

  20. def rightNormal: Vector2D

    Right normal vector

    Right normal vector. (y, -x)

  21. def rotate(angle: Double): Vector2D

    Returns a rotation of this vector by angle radian

    Returns a rotation of this vector by angle radian.

  22. def toString(): String

    Returns a string representation of the object

    Returns a string representation of the object.

    The default representation is platform dependent.

  23. def unary_-: Vector2D

    Unary minus

    Unary minus.

  24. def unit: Vector2D

    Unit vector

    Unit vector.

  25. val x: Double

  26. val y: Double

Instance constructors

  1. new Vector2D(x: Double, y: Double)

  2. new Vector2D()