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Tutorials » 3D

Object VR In Flash MX
Author: Tim Murray | Website: http://www.gmg.com.au |

Making the code simple

Those of you who can remember back to high school algebra will be able to see that these formulas can be simplified further by multiplying out and cancelling terms with opposite signs, resulting in our final clockwise code:

onClipEvent (enterFrame) {  //clockwise
     framePos = int(_xmouse / 100 * _parent._totalframes);
     if (framePos < 0) {
         _parent.gotoAndStop(1 - ((framePos + 1) % _parent._totalframes));
     } else {      
         _parent.gotoAndStop(_parent._totalframes - (framePos % _parent._totalframes));
     }
}

And applying the same process to our anticlockwise code gives:

onClipEvent (enterFrame) {  //anticlockwise
     framePos = int(_xmouse / 100 * _parent._totalframes);
     if (framePos < 0) {
         _parent.gotoAndStop(_parent._totalframes + ((framePos + 1) % _parent._totalframes));
     } else {
         _parent.gotoAndStop(1 + (framePos % _parent._totalframes));
     }
}

This makes it really easy to build an Object VR player for any QTVR movie of any length by simply grabbing the code that is appropriate for the rotation of your video file and pasting it on to your driver clip.

Time to wrap things up. Let's have a quick look at how to use our player.

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