[x3d-public] Labels in 3D

[Nicholas Polys]

This is a cool example Leonard~!

  and illustrates a common scenario  how to mix 2D annotations
 and 3D content.  ...  this will be helpful to the Web3D Working Groups who
are considering strategies to specify Annotation in X3D


with best regards,

_nicholas

On Tue, Sep 5, 2017 at 2:51 PM, Leonard Daly <Leonard.Daly at realism.com>
wrote:

> This is mostly for Nicholas and Vince who expressed an interest in
> labeling things in 3D where the labels had the capability of HTML to
> include various fonts, styles, text, graphics, links, etc.
>
> I would like to know if these types of labels meet your needs or something
> else is needed.
>
> This is using my testbed (XSeen). The example is at
> http://realism.com/XSEEN/test/labels.html.
>
> All labels are done in HTML. The lines connecting the label to the 3D
> object is done in 3D space. The labels retain their screen position as the
> camera is moved. There are three types of labels illustrated in the example
> -- fixed, relative, and draggable.
>
> The fixed label is attached to the "monster" The label line tracks the
> local origin of the monster model.
>
> The relative label maintains the initial relative screen position to the
> projection of the (local) origin of the object. The label moves as the
> object moves. This is particularly obvious when looking from the side.
>
> The last label (draggable) is attached to the torus. The user may move the
> label to any position in the canvas (2D projection of the 3D space). The
> leader line maintains the connection from the label to the object.
>
> There is preliminary documentation on the tag at http://tools.realism.com/
> specification/xseen/language-definition/user-interactions/label
>
> Caveats:
> 1) The leader lines do not track well when the camera position is changing
> nor when a draggable label is being moved.
> 2) Things don't work as you would expect (or hope) for the stereo camera.
>
>
> --
> *Leonard Daly*
> 3D Systems & Cloud Consultant
> LA ACM SIGGRAPH Chair
> President, Daly Realism - *Creating the Future*
>
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>
>


-- 
Nicholas F. Polys, Ph.D.

Director of Visual Computing
Virginia Tech Research Computing

Affiliate Professor
Virginia Tech Department of Computer Science
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