SOURCE CODE: 3D Rotation Viewer
VIEW EXAMPLE

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  <title>3D Rotation Viewer | JavaScript Examples | UIZE JavaScript Framework</title>
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  <meta name="keywords" content="animation drag-and-drop ipad touch Uize.Widget.Drag Uize.Fade.Factory"/>
  <meta name="description" content="Easily create a 3D rotation viewer in UIZE that lets users rotate the view of an object a full 360 degrees using a mouse, or finger on the Apple iPad."/>
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  <style type="text/css">
    .rotationViewer {
      position: relative;
      width: 710px;
      height: 445px;
      border-style: solid;
      border-width: 1px;
      margin: auto;
      margin-bottom: 10px;
      cursor: pointer;
      overflow: hidden;
    }
    .rotationViewer img {
      position: absolute;
      visibility: hidden;
      left: -115px;
      top: 0;
      width: 940px;
      height: 445px;
    }
  </style>
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<script type="text/javascript" src="../js/Uize.js"></script>

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    <a href="../javascript-examples.html" class="breadcrumb breadcrumbWithArrow">JAVASCRIPT EXAMPLES</a>
    3D Rotation Viewer
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      <div id="page-actions" class="pageActions"><a href="source-code/3d-rotation-viewer.html" class="buttonLink">SOURCE</a></div>
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  <!-- explanation copy -->

  <div class="explanation">
    <p>In this example, an instance of the <a href="../reference/Uize.Widget.Drag.html"><code>Uize.Widget.Drag</code></a> class is being used to create a simple 3D rotation viewer. Using a mouse, you can click and drag to rotate the 3D image. On a tablet device (or any computer with a touch screen) you can use your finger. The viewer implements a deceleration behavior - the speed at the time of release determines how long it will take to spin down to a stop. When the page loads initially, the image is animated 360 degrees clockwise. Buttons beneath the viewer let you trigger other kinds of spins.</p>
  </div>

  <!-- HTML "wireframe" for 3D rotation viewer -->

  <div id="page_rotationViewer" class="rotationViewer insetBorderColor"></div>

  <div id="page_spinButtons" style="text-align: center;"></div>
</div>

<!-- JavaScript code to make the static bar HTML "come alive" -->

<script type="text/javascript">

Uize.require (
  [
    'UizeSite.Page.Example.library',
    'UizeSite.Page.Example',
    'Uize.Widget.Drag',
    'Uize.Fade.Factory',
    'Uize.Curve.Rubber',
    'Uize.Curve.Mod',
    'Uize.Widgets.Container.Widget',
    'Uize.Widgets.Button.Widget'
  ],
  function () {
    'use strict';

    /*** create the example page widget ***/
      var page = window.page = UizeSite.Page.Example ({evaluator:function (code) {eval (code)}});

    /*** configuration variables ***/
      var
        totalFrames = 36,
        frameUrlTemplate =
          'http://www.jeep.com/assets/images/vehicles/2015/cherokee/vlp/mod-exterior-360/frame-[#frame].jpg'
      ;

    /*** state variables ***/
      var
        rotation = 0,
        lastFrameNo = -1,
        dragStartRotation
      ;

    /*** create the Uize.Widget.Drag instance ***/
      var rotationViewer = page.addChild (
        'rotationViewer',
        Uize.Widget.Drag,
        {
          cancelFade:{duration:5000,curve:Uize.Curve.Rubber.easeOutBounce ()},
          releaseTravel:function (speed) {
            var
              deceleration = 5000, // measured in pixels/s/s
              duration = speed / deceleration
            ;
            return {
              duration:duration,
              distance:Math.round (speed * duration / 2),
              curve:function (_value) {return 1 - (_value = 1 - _value) * _value}
            };
          },
          html:function (input) {
            var
              htmlChunks = [],
              frameNodeIdPrefix = input.idPrefix + '-frame'
            ;
            for (var frameNo = 0; ++frameNo <= totalFrames;) {
              htmlChunks.push (
                '<img' +
                  ' id="' + frameNodeIdPrefix + frameNo + '"' +
                  ' src="' + Uize.substituteInto (frameUrlTemplate,{frame:frameNo}) +'"' +
                '/>'
              );
            }
            return htmlChunks.join ('');
          },
          built:false
        }
      );

    /*** wire up the drag widget with events for updating rotation degree ***/
      function updateRotation (newRotation) {
        rotation = ((newRotation % 360) + 360) % 360;
        var frameNo = 1 + Math.round (rotation / 360 * (totalFrames - 1));
        if (frameNo != lastFrameNo) {
          rotationViewer.showNode ('frame'+ lastFrameNo,false);
          rotationViewer.showNode ('frame'+ (lastFrameNo = frameNo));
        }
      }
      rotationViewer.wire ({
        'Drag Start':function () {dragStartRotation = rotation},
        'Drag Update':function (e) {updateRotation (dragStartRotation - e.source.eventDeltaPos [0] / 2.5)}
      });

    /*** function for animating spin ***/
      function spin (degrees,duration,curve) {
        Uize.Fade.Factory.fade (updateRotation,rotation,rotation + degrees,duration,{quantization:1,curve:curve});
      }

    /*** add the buttons for triggering different spins ***/
      page.addChild ('spinButtons',Uize.Widgets.Container.Widget,{built:false})
        .addChildren (
          {
            clockwise:{
              text:'360 clockwise',
              action:function () {spin (360,2700,Uize.Curve.easeInOutPow (4))}
            },
            counterClockwise:{
              text:'360 counter-clockwise',
              action:function () {spin (-360,2700,Uize.Curve.easeInOutPow (4))}
            },
            threeSpins:{
              text:'3 spins',
              action:function () {spin (1080,4000,Uize.Curve.easeInOutPow (4))}
            },
            withBounce:{
              text:'spin with bounce',
              action:function () {spin (360,2700,Uize.Curve.Rubber.easeOutBounce (5,-2,1.5))}
            },
            withElasticity:{
              text:'spin with elasticity',
              action:function () {spin (360,4000,Uize.Curve.Mod.bend (Uize.Curve.Rubber.easeOutElastic (.1),3))}
            }
          },
          {
            widgetClass:Uize.Widgets.Button.Widget,
            size:'small'
          }
        )
      ;

    /*** initialization ***/
      page.wireNode (window,'load',function () {spin (360,2700,Uize.Curve.easeInOutPow (4))});

    /*** wire up the page widget ***/
      page.wireUi ();
  }
);

</script>

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