export all : class Point
	public [new x y on cubic subdivided] : begin
		this.x = x
		this.y = y
		this.on = on || false
		this.cubic = cubic || false
		this.subdivided = subdivided || false

	public [add z2] : new Point
		this.x + z2.x
		this.y + z2.y
		* this.on
		* this.cubic
		* this.subdivided

	public [addScale scale z2] : new Point
		this.x + scale * z2.x
		this.y + scale * z2.y
		* this.on
		* this.cubic
		* this.subdivided

	public [mix scale z2] : new Point
		this.x + scale * (z2.x - this.x)
		this.y + scale * (z2.y - this.y)
		* this.on
		* this.cubic
		* this.subdivided

	public [scale t] : new Point
		t * this.x
		t * this.y
		* this.on
		* this.cubic
		* this.subdivided

	public [round d] : new Point
		[Math.round (this.x * d)] / d
		[Math.round (this.y * d)] / d
		* this.on
		* this.cubic
		* this.subdivided

	static [from z on cubic subdivided] : new Point
		* z.x
		* z.y
		* on
		* cubic
		* subdivided

	static [cornerFrom     z]   : new Point (z.x || 0) (z.y || 0) true  false false
	static [offFrom        z]   : new Point (z.x || 0) (z.y || 0) false false false
	static [cubicOffFrom   z]   : new Point (z.x || 0) (z.y || 0) false true  false
	static [cornerFromXY   x y] : new Point (x   || 0) (y   || 0) true  false false
	static [offFromXY      x y] : new Point (x   || 0) (y   || 0) false false false
	static [cubicOffFromXY x y] : new Point (x   || 0) (y   || 0) false true  false

	static [transformed tfm x y on cubic subdivided] : new Point
		* x * tfm.xx + y * tfm.yx + tfm.x
		* x * tfm.xy + y * tfm.yy + tfm.y
		* on
		* cubic
		* subdivided

	static [translated z dx dy] : new Point ((z.x || 0) + dx) ((z.y || 0) + dy) z.on z.cubic z.subdivided