Dragging in Papervision 3D – example

Posted on September 4, 2009, 7:51 am, by Daniel, under actionscript.

UPDATE 29/09/09: This technique is possibly no longer valid with the latest version of Papervision3D.


Dragging in Papervision example

Here is a small example I put together quickly today to demonstrate how to drag in 3D using Papervision and the InteractiveUtils.getMapCoordAtPointDO3D function.
Since my last post on this in December last year, the Papervision getMapCoordAtPointDO3D method returned object's x and y values seemed to have changed by a factor of 36.

UPDATE 29/09/09: This technique is possibly no longer valid with the latest version of Papervision3D.

 
private function _updateDrag(e:Event):void
{
    // get the update position on the plane
    var obj:Object = InteractiveUtils.getMapCoordAtPointDO3D(_selectedPlane,
                                        _selectedPlane.container.mouseX,
                                        _selectedPlane.container.mouseY)
    // move the dragged plane to the new postion with the offset
    _selectedPlane.x = _selectedPlane.x + obj.x * 36 - _drag_X_offset;
    _selectedPlane.y = _selectedPlane.y - obj.y * 36  + _drag_Y_offset;
}
 

Click here to see it in action.

The source files can be downloaded here.

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6 Comments

  1. Michael Iv says:
    September 8, 2009 at 6:28 am

    Thank you very much for this example!!

  2. Daniel says:
    September 8, 2009 at 6:31 am

    You’re welcome. Bear in mind the Papervision classes are trunk v1_7 or something and I haven’t checked if it will compile and run with the latest release. Make sure you post a link to your project here once it is complete!

  3. Michael Iv says:
    September 11, 2009 at 9:53 am

    …. It can be a problem , but I will give a check. Actually I managed to write a code that drags the PV3D geometry and adds to it acceleration which depends on the speed of mouse move . But my workaround was to deal with the container of the specific geometry so I get an access to the start/stopDrag functions and from then on it was just some 2D Math . Anyway your approach seems more like 3d oriented that is why I like it .
    Have a nice day!

  4. Michael Iv says:
    September 11, 2009 at 10:01 am

    By the Way I am coming to Flash on the Beach too . I will be glad to have a talk with you about tips and tricks in PV3D If you are interested
    Thanks again

  5. Michael says:
    September 25, 2009 at 11:22 am

    Hey Dan ! . I would like to inform you that your approach does not work in the current version of PV3D . It behaves very different when you drag objects . Thanks anyway

  6. Daniel says:
    September 29, 2009 at 6:17 am

    Thanks Michael, I’ve updated the post. I hope you enjoyed FOTB as much as I did!

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