p5-sketchbook/MosaicSlider/index.html at main · ptrgags/p5-sketchbook · GitHub

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<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <script
      language="javascript"
      type="text/javascript"
      src="../libraries/p5.min.js"
    ></script>
    <script type="module">
      import { sketch } from "./MosaicSlider.js";
      import "../sketchlib/sketchbook-navbar.js";
      const p5_sketch = new p5(sketch, "sketch");
    </script>
    <link rel="stylesheet" href="../styles/layout.css" />
    <style>
      .center {
        padding: 10px;
        text-align: center;
      }
    </style>
  </head>
  <body>
    <sketchbook-navbar></sketchbook-navbar>
    <div class="container">
      <h1>Mosaic Slider (2025)</h1>
      <div class="sketch">
        <canvas id="sketch-canvas" width="500" height="700"></canvas>
      </div>
      <div class="controls">
        <input id="color-0" type="color" />
        <input id="color-1" type="color" />
        <input id="color-2" type="color" />
        <input id="color-3" type="color" />
        <br />
        <div class="center"><button id="save-image">Save image</button></div>
      </div>
      <div class="description">
        <p>
          Drag pixels around the canvas to make pixel art. You can use the color
          pickers to change the colors. The "Save image" button downloads the
          pixel art as a PNG image.
        </p>
        <p>
          About a year ago, I wanted to make art for my wall. I realized that if
          I used Lego tiles, it would let me make reusable art. This puts
          interesting constraints on the pixel art:
        </p>
        <ul>
          <li>
            The canvas is low resolution, only 16x16 tiles! Here's what that
            would look like if these were screen pixels:
            <img width="16" src="figures/mosaic-tile.png" />
          </li>
          <li>
            The color palette is limited by what color lego tiles I have on
            hand.
          </li>
          <li>
            I also have a limited number of tiles, so I have to be aware of
            <em>number</em> of pixels in each color used in the artwork.
          </li>
        </ul>
        <p>
          Since counting out pixels sounds like a chore, I realized there was an
          easier way: if I start with the same number of tiles in each color and
          only rearrange them, that will satisfy the constraints. I don't know
          of any drawing program with this kind of tool, so I made this sketch.
        </p>
        <p>
          Here's an example artwork I made with this sketch, and what it looks
          like in Lego:
        </p>
        <div class="center">
          <img
            width="250"
            alt="An example abstract mosaic"
            src="figures/mosaic-example.png"
          />
          <img
            width="250"
            alt="The same abstract mosaic made with Lego tiles"
            src="figures/lego-mosaic.jpg"
          />
        </div>
      </div>
    </div>
  </body>
</html>