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https://github.com/tiennm99/ai-coding-workflow-labs.git
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tiennm99
51a4b90163
Convert all 41 TypeScript source/config files in cc4e-course/quiz-project (Next.js), gstack (Astro), and superpowers (Vite/React/Phaser) to plain JavaScript with JSDoc type annotations, replacing tsconfig.json with jsconfig.json (strict + checkJs) in each subproject. No behavior changes: lint, typecheck, test, and build gates match their TypeScript baselines exactly in all three subprojects. Update stack references in the affected READMEs accordingly.
91 lines
1.5 KiB
JavaScript
91 lines
1.5 KiB
JavaScript
/**
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* @typedef {{ readonly x: number, readonly y: number }} Vec2
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*/
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export const EPSILON_LEN = 0.5;
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export const EPSILON_ANGLE_DEG = 0.5;
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/**
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* @param {number} x
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* @param {number} y
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* @returns {Vec2}
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*/
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export function vec(x, y) {
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return { x, y };
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}
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/**
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* @param {Vec2} a
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* @param {Vec2} b
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* @returns {Vec2}
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*/
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export function add(a, b) {
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return { x: a.x + b.x, y: a.y + b.y };
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}
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/**
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* @param {Vec2} a
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* @param {Vec2} b
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* @returns {Vec2}
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*/
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export function sub(a, b) {
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return { x: a.x - b.x, y: a.y - b.y };
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}
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/**
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* @param {Vec2} a
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* @param {number} k
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* @returns {Vec2}
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*/
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export function scale(a, k) {
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// `+ 0` normalizes IEEE-754 -0 back to +0 so consumers comparing coordinates
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// with === or Object.is don't see a signed-zero ghost from k=0 paths.
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return { x: a.x * k + 0, y: a.y * k + 0 };
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}
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/**
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* @param {Vec2} a
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* @param {Vec2} b
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* @returns {number}
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*/
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export function dot(a, b) {
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return a.x * b.x + a.y * b.y;
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}
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/**
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* @param {Vec2} a
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* @returns {number}
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*/
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export function len(a) {
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return Math.hypot(a.x, a.y);
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}
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/**
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* @param {Vec2} a
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* @param {Vec2} b
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* @returns {number}
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*/
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export function dist(a, b) {
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return Math.hypot(a.x - b.x, a.y - b.y);
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}
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/**
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* @param {Vec2} a
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* @returns {Vec2}
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*/
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export function normalize(a) {
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const l = len(a);
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if (l === 0) return { x: 0, y: 0 };
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return { x: a.x / l, y: a.y / l };
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}
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/**
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* @param {number} a
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* @param {number} b
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* @param {number} [eps]
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* @returns {boolean}
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*/
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export function approxEqualLen(a, b, eps = EPSILON_LEN) {
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return Math.abs(a - b) < eps;
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}
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