[x3d-public] Proposed new Profile

[Greg Couch]

On 1/22/2018 8:43 AM, Leonard Daly wrote:
>
> The existing X3D profiles were designed for run-time environments. 
> Since those original definitions, the marketplace has changed. There 
> is need of an open, standardized formats for models that supports 
> conversion to and from existing formats such as FBX, OBJ, glTF, and 
> others. There are some tools that do that conversion, but tend to be 
> expensive or limited in capability. To address this hole in the 3D 
> eco-system, I am proposing new profiles to handle the archive storage 
> for models. The first proposal is for static models. These are models 
> without articulation, joints, sliders, etc. The profile supports the 
> way models are built in the industrial/professional world of games, 
> entertainment, CAD, and medical -- at least to the best of my 
> understanding.
>
> The collection of nodes handles output functionality from Maya and 
> Blender plus other tools. It includes some advanced structures such as 
> NURBS, CAD, and Volume; and does not include simple structures as 
> simple geometry (Box, Sphere, etc.). I looked at what the tools output 
> and could not find instances where simple structures were exported. 
> This allows important features of the model (e.g., a NURBS surface) to 
> exist and triangulation to happen later in the process.
>
> The details are at 
> http://realism.com/blog/proposed-x3d-profile-static-model. The post 
> includes a list of included nodes sorted by their profile.
>
> -- 
> *Leonard Daly*
> 3D Systems & Cloud Consultant
> LA ACM SIGGRAPH Past Chair
> President, Daly Realism - /Creating the Future/
>
>
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For reference, UCSF Chimera, a free molecular modeling program that 
exports X3D, uses the Interchange profile for static scenes with the 
following extra component levels listed in the header, depending on what 
is exported: Geometry2D: 2, Navigation: 3, Rendering: 5, Shape: 3, and 
Text: 1.  So please include Box, Sphere, OrthoViewpoint, ColorRGBA, 
ClipPlane, and Text in static scenes. And we would like to add, 
available in X3D 3.3: <unit category='length' name='ångström' 
conversionFactor='1e-10'/>.  So please include units in the profile 
description too.

    HTH,

    Greg

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