@mousepox/math/dist-es/Vector2.js

Math-related objects and utilities

import { clamp } from "./core";
export class Vector2 {
    static fromAngle(radians) {
        return new Vector2(Math.cos(radians), Math.sin(radians));
    }
    x;
    y;
    get angle() {
        return Math.atan2(this.y, this.x);
    }
    get magnitude() {
        return Math.sqrt(this.x * this.x + this.y * this.y);
    }
    constructor(x = 0, y = 0) {
        this.x = x;
        this.y = y;
    }
    set(x, y) {
        this.x = x;
        this.y = y;
        return this;
    }
    add(p) {
        this.x += p.x;
        this.y += p.y;
        return this;
    }
    copy(p) {
        this.x = p.x;
        this.y = p.y;
        return this;
    }
    normalize() {
        const mag = this.magnitude;
        if (mag === 0) {
            return this;
        }
        else {
            return this.scale(1 / mag);
        }
    }
    scale(n) {
        this.x *= n;
        this.y *= n;
        return this;
    }
    subtract(p) {
        this.x -= p.x;
        this.y -= p.y;
        return this;
    }
    constrain(x, y, width, height) {
        this.x = clamp(this.x, x, x + width);
        this.y = clamp(this.y, y, y + height);
        return this;
    }
    rotate(angle, origin) {
        const ox = origin?.x ?? 0;
        const oy = origin?.y ?? 0;
        const cos = Math.cos(angle);
        const sin = Math.sin(angle);
        const x = (this.x - ox) * cos - (this.y - oy) * sin + ox;
        const y = (this.x - ox) * sin + (this.y - oy) * cos + oy;
        return this.set(x, y);
    }
}