examples/test/memo.html

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8" />
    <title>MathBox - Memo</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"
    />
    <link
      rel="stylesheet"
      href="../../node_modules/shadergraph/build/shadergraph.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(0.3, 1, 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({
        width: 16,
        history: 16,
        range: [0, 1],
        expr: function (emit, x, i, t) {
          var j = t * 60;
          var y = Math.sin(j * 0.1) * 0.5 + 0.5;
          emit(x + y, i % 2, Math.cos(y) * 0.5 + 0.5, 1.0);
        },
        bufferWidth: 32,
      });
      view.memo({
        minFilter: "linear",
        magFilter: "linear",
      });
      view.compose();

      view
        .area({
          width: 3,
          height: 16,
        })
        .surface({
          color: 0xffffff,
          points: "<",
          map: "<<",
          zBias: -5,
        });
    </script>
  </body>
</html>