examples/filter.html from spritejs/spritejs

examples/filter.html
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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Quick Start</title>
  <script src="/js/spritejs.js"></script>
  <style>
    html,body {
      margin: 0;
      padding: 0;
      background: #201e1e;
      height: 100%;
      width: 100%;
      max-width: 800px;
    }

    #stage {
      display: inline-block;
      width: 100%;
      height: 0;
      padding-bottom: 100%;
      background: #201e1e;
    }  
  </style>
</head>
<body>
  <div id="stage"></div>
  <script>
  (async function () {
    const {Scene, Sprite, Label, Group, Path} = spritejs;
    const container = document.getElementById('stage');
    const scene = new Scene({
      container,
      width: 1600,
      height: 1200,
      mode: 'stickyWidth',
      // contextType: '2d',
    });
  
    const layer = scene.layer();
    layer.canvas.style.backgroundColor = '#f4f2e6';

    await scene.preload([
      'https://p3.ssl.qhimg.com/t010ded517024020e10.png',
      'https://s1.ssl.qhres2.com/static/6ead70a354da7aa4.json',
    ]);

    const generateSpriteWithFilter = (filter, labelText, pos) => {
      const guanguan = new Sprite();
      guanguan.attr({
        size: [270, 340],
        texture: 'guanguan1s.png',
        textureRect: [50, 40, 180, 220],
        filter,
        anchor: 0.5,
        pos,
      });
      layer.append(guanguan);

      const label = new Label(labelText);
      label.attr({
        font: 'bold 30px "Arial"',
        fillColor: '#474534',
        anchor: 0.5,
        pos: [pos[0], pos[1] + 120],
      });
      layer.append(label);
    };

    this.scene = scene;

    // same filter as in css3
    generateSpriteWithFilter('drop-shadow(2px, 2px, 10px, #FF6040)', 'dropShadow', [200, 500]);
    generateSpriteWithFilter('blur(4px)', 'blur', [500, 500]);
    generateSpriteWithFilter('brightness(50%)', 'birghtness', [800, 500]);
    generateSpriteWithFilter('contrast(200%)', 'contrast', [1100, 500]);
    generateSpriteWithFilter('grayscale(100%)', 'grayscale', [1400, 500]);
    generateSpriteWithFilter('hue-rotate(90deg)', 'hueRotate', [200, 840]);
    generateSpriteWithFilter('invert(75%)', 'brightness', [500, 840]);
    generateSpriteWithFilter('opacity(0.25)', 'opacity', [800, 840]);
    generateSpriteWithFilter('saturate(30%)', 'saturate', [1100, 840]);
    generateSpriteWithFilter('sepia(100%)', 'sepia', [1400, 840]);
  }());
  </script>
</body>
</html>