Vec2.ts

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`5edd30c7` 2026-05-17 Pavel Safronov	1	export class Vec2 {
	2	readonly x: number
	3	readonly y: number
	4	constructor(x: number, y: number) { this.x = x; this.y = y }
	5
	6	add(v: Vec2): Vec2 { return new Vec2(this.x + v.x, this.y + v.y) }
	7	sub(v: Vec2): Vec2 { return new Vec2(this.x - v.x, this.y - v.y) }
	8	scale(s: number): Vec2 { return new Vec2(this.x * s, this.y * s) }
	9
	10	length(): number { return Math.sqrt(this.x * this.x + this.y * this.y) }
	11	lengthSq(): number { return this.x * this.x + this.y * this.y }
	12
	13	normalize(): Vec2 {
	14	const len = this.length()
	15	return len > 0 ? this.scale(1 / len) : Vec2.ZERO
	16	}
	17
	18	limit(max: number): Vec2 {
	19	const len = this.length()
	20	return len > max ? this.scale(max / len) : this
	21	}
	22
	23	lerp(v: Vec2, t: number): Vec2 {
	24	return new Vec2(this.x + (v.x - this.x) * t, this.y + (v.y - this.y) * t)
	25	}
	26
	27	distanceTo(v: Vec2): number { return this.sub(v).length() }
	28	distanceSqTo(v: Vec2): number { return this.sub(v).lengthSq() }
	29
	30	static readonly ZERO = new Vec2(0, 0)
	31	}