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  • §

    Demo Modules 006

    Animation observer; Scrollytelling

  • §

    Related files:

    • First canvas module
    • Second canvas module
    • Third canvas module
    • Fourth canvas module
    • Demo utilities helper module

    Run code

    import * as scrawl from '../source/scrawl.js';
  • §

    Fix CSS styling - defaults to no JS display which needs to be updated

    document.querySelector('body').classList.add('javascript-enabled');
  • §

    Namespace boilerplate

    const namespace = 'demo57'
    const name = item => `${namespace}-${item}`;
  • §

    Scene setup

    const {
        'st-1-canvas': canvas1,
        'st-2-canvas': canvas2,
        'st-3-canvas': canvas3,
        'st-4-canvas': canvas4,
    } = scrawl.library.canvas;
  • §

    Infographic canvas 1

    import initCanvas1 from './modules/demo-m006-c1.js';
    
    const canvas1api = initCanvas1({
        canvas: canvas1,
        namespace: name('st-1-observer'),
        scrawl,
    });
  • §

    Infographic canvas 2

    import initCanvas2 from './modules/demo-m006-c2.js';
    
    const canvas2api = initCanvas2({
        canvas: canvas2,
        namespace: name('st-2'),
        scrawl,
    });
  • §

    Infographic canvas 3

    import initCanvas3 from './modules/demo-m006-c3.js';
    
    const canvas3api = initCanvas3({
        canvas: canvas3,
        namespace: name('st-3'),
        scrawl,
    });
  • §

    Infographic canvas 4

    import initCanvas4 from './modules/demo-m006-c4.js';
    
    const canvas4api = initCanvas4({
        canvas: canvas4,
        namespace: name('st-4'),
        scrawl,
    });
  • §

    Report animation

    import { reportSpeed } from './utilities.js';
    
    const report = reportSpeed('#reportmessage', function () {
    
        const running = [];
    
        if (canvas1api.animation.isRunning()) running.push('st-1-canvas');
        if (canvas2api.animation.isRunning()) running.push('st-2-canvas');
        if (canvas3api.animation.isRunning()) running.push('st-3-canvas');
        if (canvas4api.animation.isRunning()) running.push('st-4-canvas');
    
        if (running.length) return `Running animations: ${running.join('; ')}`;
        return 'Running animations: none';
    });
    
    scrawl.makeRender({
        name: name('animation'),
        noTarget: true,
        afterShow: report,
    });
  • §

    Developing

    console.log(scrawl.library);