ngx-screen-saver/esm2020/lib/screen-savers/stars/stars.mjs

Screen saver component for Angular.

import { reverseLoop } from '../../utils/reverse-loop';
import { Star } from './star';
const MAX_STARS = 100;
const starsArr = [];
export const stars = (p5) => {
    const width = p5.windowWidth;
    const height = p5.windowHeight;
    let backgroundImage;
    // PRELOAD
    p5.preload = () => {
        backgroundImage = p5.loadImage('assets/ngx-screen-saver/galaxy.jpg');
    };
    // SETUP
    p5.setup = () => {
        p5.createCanvas(width, height).addClass('ngx-screen-saver');
        p5.image(backgroundImage, 0, 0);
        for (let i = 0; i < MAX_STARS; i++) {
            const star = new Star(p5, p5.random(0, width), p5.random(0, height));
            starsArr.push(star);
        }
    };
    // DRAW
    p5.draw = () => {
        p5.image(backgroundImage, 0, 0);
        reverseLoop(starsArr, (star, idx) => {
            star.update();
            star.draw();
            if (star.destroy) {
                starsArr.splice(idx, 1);
                const newStar = new Star(p5, p5.random(0, width), p5.random(0, height));
                starsArr.push(newStar);
            }
        });
    };
};
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