Method rotate

Data-Structures/Vectors/Vector2.js:123–129

* Vector rotation (see https://en.wikipedia.org/wiki/Rotation_matrix) * * @param angleInRadians The angle in radians by which to rotate the vector. * @returns The rotated vector.

(angleInRadians)

   * @returns The rotated vector.
   */
  rotate(angleInRadians) {
    const ca = Math.cos(angleInRadians)
    const sa = Math.sin(angleInRadians)
    const x = ca * this.x - sa * this.y
    const y = sa * this.x + ca * this.y
    return new Vector2(x, y)
  }

  /**
   * Measure angle between two vectors