mathbox/examples/vr/surface.html at master · unconed/mathbox · GitHub

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<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8" />
    <title>MathBox - VR</title>
    <script
      type="text/javascript"
      src="https://cdn.jsdelivr.net/npm/three@0.137.0/build/three.min.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: ["VR", "ui", "controls"],
        controls: {
          klass: THREE.VRControls,
        },
      });
      three = mathbox.three;

      three.camera.position.set(0, 0.003, 0.01);
      three.renderer.setClearColor(new THREE.Color(0xffffff), 1.0);
      //    three.renderer.setClearColor(new THREE.Color(0x000000), 1.0);

      time = 0;
      three.on("update", function () {
        time = three.Time.clock;
      });

      view = mathbox
        .unit({
          scale: 720,
        })
        .cartesian({
          range: [
            [-3, 3],
            [0, 1],
            [-3, 3],
          ],
          scale: [0.5, 0.25, 0.5],
          position: [0, -0.5, -1.5],
          quaternion: [0, 0.923, 0, 0.382],
        });

      view.axis({
        axis: 1,
      });
      view.axis({
        axis: 3,
      });

      view.grid({
        width: 5,
        opacity: 0.5,
        axes: [1, 3],
      });

      view.area({
        width: 64,
        height: 64,
        axes: [1, 3],
        expr: function (emit, x, y, i, j) {
          emit(x, 0.25 + 0.25 * (Math.sin(x + time) * Math.sin(y + time)), y);
          emit(
            x,
            0.25 +
              0.25 *
                (Math.sin(x * 1.31 + time * 1.13) *
                  Math.sin(y * 1.46 - time * 0.94)) +
              0.5,
            y
          );
          emit(
            x,
            0.25 +
              0.25 *
                (Math.sin(x * 1.25 + Math.sin(y + time) - time * 1.34) *
                  Math.sin(y * 1.17 - time * 0.79)) +
              1,
            y
          );
        },
        items: 3,
        channels: 3,
      });
      view.surface({
        color: 0x3090ff,
        width: 2,
        shaded: true,
        lineX: true,
      });
    </script>
  </body>
</html>