examples/test/curvedots.html

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8" />
    <title>MathBox - Curvedots</title>
    <script
      type="text/javascript"
      src="https://cdn.jsdelivr.net/npm/three@0.137.0/build/three.min.js"
    ></script>
    <script
      type="text/javascript"
      src="https://cdn.jsdelivr.net/npm/three@0.137.0/examples/js/controls/OrbitControls.js"
    ></script>
    <!--
      - a minified version mathbox.min.js is also available;
      - recommend using a specific version (not @latest) in public sites
    -->
    <script
      type="text/javascript"
      src="https://cdn.jsdelivr.net/npm/mathbox@latest/build/bundle/mathbox.js"
    ></script>
    <link
      rel="stylesheet"
      href="https://cdn.jsdelivr.net/npm/mathbox@latest/build/mathbox.css"
    />
    <meta name="viewport" content="initial-scale=1, maximum-scale=1" />
  </head>
  <body>
    <script>
      mathbox = MathBox.mathBox({
        plugins: ["core", "controls", "cursor"],
        controls: {
          klass: THREE.OrbitControls,
        },
      });
      three = mathbox.three;

      three.camera.position.set(0, 0, 3);
      three.renderer.setClearColor(new THREE.Color(0xffffff), 1.0);

      view = mathbox.cartesian({
        range: [
          [-2, 2],
          [-1, 1],
          [-1, 1],
        ],
        scale: [2, 1, 1],
      });

      view.interval({
        id: "sampler",
        width: 32,
        expr: function (emit, x, i, time) {
          y =
            Math.sin(x + time) +
            (i % 2) * Math.sin(x * 400000 + time * 5 + x * x * 10000) * 0.05;
          emit(x, y);
        },
        channels: 2,
      });

      view.spread({
        unit: "absolute",
        height: [0, 0.05, 0, 0],
      });

      view.split({
        axis: "x",
        length: 3,
        overlap: 0,
      });
      view.join({
        axis: "x",
        overlap: 1,
      });

      view.line({
        color: 0x3090ff,
        width: 5,
      });
      view.point({
        color: 0x3090ff,
        size: 30,
      });

      // presentation integration
      messageHandler = function (event) {
        d = event.data;
        if (d && (d = d.mathBoxDirector) && d.method == "go") {
          v = Math.max(0, Math.min(1, d.args[0] - 3));
          mathbox.select("#sampler").set({ history: v * 25 });
        }
      }.bind(this);
      window.addEventListener("message", messageHandler);
    </script>
  </body>
</html>