Class Vector

constructor

• new Vector(...args): Vector

• Vector may be constructed by two points, or by two float numbers, or by array of two numbers

  Parameters

  • Rest...args:
        | [number, number]
        | []
        | [[number, number]]
        | [Point, Point]

    array of two numbers or two points [start,end] or two numbers

  Returns Vector

x

y

length

• get length(): number

• Length of vector

  Returns number

  length of vector

name

• get name(): string

• Shape name

  Returns string

  name of the shape

slope

• get slope(): number

• Slope of the vector in radians from 0 to 2PI

  Returns number

  slope in radians from 0 to 2PI

add

• add(v): Vector

• Return result of addition of other vector to this vector as a new vector

  Parameters

  • v: Vector

    Other vector

  Returns Vector

  sum of two vectors

angleTo

• angleTo(v): number

• Return angle between this vector and other vector.
  Angle is measured from 0 to 2*PI in the counterclockwise direction from current vector to another.

  Parameters

  • v: Vector

    Another vector

  Returns number

  Angle in radians between two vectors in range [0, 2*PI]

clone

• clone(): Vector

• Method clone returns new instance of Vector

  Returns Vector

  clone of the vector

cross

• cross(v): number

• Returns vector product (cross product) of two vectors
  cross_product = (this x v)

  Parameters

  • v: Vector

    Other vector

  Returns number

  cross_product

dot

• dot(v): number

• Returns scalar product (dot product) of two vectors
  dot_product = (this * v)

  Parameters

  • v: Vector

    Other vector

  Returns number

  dot product

equalTo

• equalTo(v): boolean

• Returns true if vectors are equal up to DP_TOL tolerance

  Parameters

  • v: Vector

    Other vector

  Returns boolean

  true if vectors are equal

invert

• invert(): Vector

• Return inverted vector

  Returns Vector

  inverted vector

multiply

• multiply(scalar): Vector

• Returns new vector multiplied by scalar

  Parameters

  • scalar: number

  Returns Vector

  scaled vector

normalize

• normalize(): Vector

• Returns unit vector.
  Throw error if given vector has zero length

  Returns Vector

  normalized vector

projectionOn

• projectionOn(v): Vector

• Return vector projection of the current vector on another vector

  Parameters

  • v: Vector

    Another vector

  Returns Vector

  projection of the current vector on another vector

rotate

• rotate(angle, center?): Vector

• Rotate vector by given angle, positive angle defines rotation in counterclockwise direction, negative - in clockwise direction Vector only can be rotated around (0,0) point!

  Parameters

  • angle: number

    Angle in radians
  • center: Point = ...

  Returns Vector

  rotated vector

rotate90CCW

• rotate90CCW(): Vector

• Returns vector rotated 90 degrees counterclockwise

  Returns Vector

  rotated vector

rotate90CW

• rotate90CW(): Vector

• Returns vector rotated 90 degrees clockwise

  Returns Vector

  rotated vector

subtract

• subtract(v): Vector

• Return result of subtraction of other vector from current vector as a new vector

  Parameters

  • v: Vector

    Another vector

  Returns Vector

  subtraction result

transform

• transform(m): Vector

• Return new vector transformed by affine transformation matrix m

  Parameters

  • m: Matrix

    affine transformation matrix (a,b,c,d,tx,ty)

  Returns Vector

  transformed vector