[x3d-public] Appearance of Geometry in HTML

[Leonard Daly]

John,

> I’m not even sure why Shape and IndexedFaceSets are required over HTML 
> div and span + some form of CSS.  Something to think about.
>

HTML defines may convenience tags. While it is not strictly necessary to 
have something like "table" and all of its children tags, it does make 
displaying a table much easier. It would certainly be possible to have 
something like

          :
<div id='x3d'>
   <div id='scene'>
     <div id='t1' class='transform'>
       <div id='s1' class='geometry-box appearance-sign 
appearance-limit...'></div>
     </div>
   </div>
</div>
          :

It does get difficult to understand and it is possible that each 
developer would have their own definitions of #x3d, #scene, .transform, 
.geometry-box, etc.

I did think about this style, but decided that readability of content 
superseded the abstraction of all elements and the complete separation 
of content and style.


Leonard Daly



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>
> *From: *Leonard Daly <mailto:Leonard.Daly at realism.com>
> *Sent: *Monday, August 14, 2017 11:21 AM
> *To: *X3D Public <mailto:x3d-public at web3d.org>
> *Subject: *[x3d-public] Appearance of Geometry in HTML
>
> If HTML/CSS world, the appearance of an element is (ideally) set in 
> the appropriate style definitions for the element using a combinations 
> of classes, ids, tags, and hierarchy. This includes it's edge effects 
> (border style, corner rounding, padding) and internal appearance 
> (color, background color, gradients, fonts, etc.).
>
> Using the same environment (HTML/CSS) and adding the 3D dimension (and 
> maybe second cameras, markers, etc.) should the appearance of objects 
> (geometry) be controlled by the appropriate style definitions? Why or 
> why not?
>
> If CSS+1D style definitions are used, then there is no need to any 
> appearance nodes (Material, ImageTxture, etc.). It might be done as 
> <Shape class='sign speedLimit'><IndexedFaceSet ...></Shape>. The 
> classes would add the black border, yellow background, text color, etc.
>
> The disadvantage is that some geometries may be require an extremely 
> complex vertex (or face) assignment for this to be practical.
>
> This method does align nicely with HTML and allows HTML tools and 
> concepts to be carried over to 3D/VR/AR/xR.
>
> -- 
> *Leonard Daly*
> 3D Systems & Cloud Consultant
> LA ACM SIGGRAPH Chair
> President, Daly Realism - /Creating the Future/
>

-- 
*Leonard Daly*
3D Systems & Cloud Consultant
LA ACM SIGGRAPH Chair
President, Daly Realism - /Creating the Future/
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