Class Anchor

x

y

add

• add(p: Point): Point

  Add this point's x & y coordinates to another point, yielding a new point.

  Parameters

  • p: Point

    the other point

  Returns Point

  output point

angleTo

• angleTo(b: Point): number

  Get the angle from this point to another point, in radians

  Parameters

  • b: Point

    the other point

  Returns number

  angle

angleWith

• angleWith(b: Point): number

  Get the angle between this point and another point, in radians

  Parameters

  • b: Point

    the other point

  Returns number

  angle

angleWithSep

• angleWithSep(x: number, y: number): number

  Find the angle of the two vectors, solving the formula for the cross product a x b = |a||b|sin(θ) for θ.

  Parameters

  • x: number

    the x-coordinate

  • y: number

    the y-coordinate

  Returns number

  the angle in radians

dist

• dist(p: Point): number

  Calculate the distance from this point to another point

  Parameters

  • p: Point

    the other point

  Returns number

  distance

distSqr

• distSqr(p: Point): number

  Calculate the distance from this point to another point, without the square root step. Useful if you're comparing relative distances.

  Parameters

  • p: Point

    the other point

  Returns number

  distance

div

• div(k: number): Point

  Divide this point's x & y coordinates by a factor, yielding a new point.

  Parameters

  • k: number

    factor

  Returns Point

  output point

divByPoint

• divByPoint(p: Point): Point

  Divide this point's x & y coordinates by point, yielding a new point.

  Parameters

  • p: Point

    the other point

  Returns Point

  output point

equals

• equals(other: Point): boolean

  Judge whether this point is equal to another point, returning true or false.

  Parameters

  • other: Point

    the other point

  Returns boolean

  whether the points are equal

mag

• mag(): number

  Return the magnitude of this point: this is the Euclidean distance from the 0, 0 coordinate to this point's x and y coordinates.

  Returns number

  magnitude

matMult

• matMult(m: [number, number, number, number]): Point

  Multiply this point by a 4x1 transformation matrix

  Parameters

  • m: [number, number, number, number]

    transformation matrix

  Returns Point

  output point

mult

• mult(k: number): Point

  Multiply this point's x & y coordinates by a factor, yielding a new point.

  Parameters

  • k: number

    factor

  Returns Point

  output point

multByPoint

• multByPoint(p: Point): Point

  Multiply this point's x & y coordinates by point, yielding a new point.

  Parameters

  • p: Point

    the other point

  Returns Point

  output point

perp

• perp(): Point

  Compute a perpendicular point, where the new y coordinate is the old x coordinate and the new x coordinate is the old y coordinate multiplied by -1

  Returns Point

  perpendicular point

rotate

• rotate(a: number): Point

  Rotate this point around the 0, 0 origin by an angle a, given in radians

  Parameters

  • a: number

    angle to rotate around, in radians

  Returns Point

  output point

rotateAround

• rotateAround(a: number, p: Point): Point

  Rotate this point around p point by an angle a, given in radians

  Parameters

  • a: number

    angle to rotate around, in radians

  • p: Point

    Point to rotate around

  Returns Point

  output point

round

• round(): Point

  Return a version of this point with the x & y coordinates rounded to integers.

  Returns Point

  rounded point

sub

• sub(p: Point): Point

  Subtract this point's x & y coordinates to from point, yielding a new point.

  Parameters

  • p: Point

    the other point

  Returns Point

  output point

unit

• unit(): Point

  Calculate this point but as a unit vector from 0, 0, meaning that the distance from the resulting point to the 0, 0 coordinate will be equal to 1 and the angle from the resulting point to the 0, 0 coordinate will be the same as before.

  Returns Point

  unit vector point