[x3d-public] Labels in 3D

Leonard Daly Leonard.Daly at realism.com
Tue Sep 5 15:47:44 PDT 2017


John,

Interesting. Do you have any idea how well this would work in 3D space? 
I'm not sure what would be necessary to capture from this library. The 
requirements (as I understood them) was to have HTML-like capabilities 
in the contents of the label (I used HTML so I wouldn't have to 
redevelop anything), a leader line of some sort, and attachment to a 
piece of 3D geometry.

What I gathered  from a quick read-through of the documentation is that 
the note is not HTML (but close), the subject is a portion of a D3 
graph, and the connection has lots of options. Given the requirements, I 
think the only piece that offers includable options is the connector. If 
I am wrong, please point that out.

Leonard Daly


> Might be nice to integrate the D3.js annotations library. 
> http://d3-annotation.susielu.com/
>
> John
>
> Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for 
> Windows 10
>
> *From: *Leonard Daly <mailto:Leonard.Daly at realism.com>
> *Sent: *Tuesday, September 5, 2017 2:52 PM
> *To: *X3D Public <mailto:x3d-public at web3d.org>
> *Subject: *[x3d-public] Labels in 3D
>
> 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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-- 
*Leonard Daly*
3D Systems & Cloud Consultant
LA ACM SIGGRAPH Chair
President, Daly Realism - /Creating the Future/
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