[x3d-public] X3D Working Group meeting 23 SEP 2022: Mantis issues review, SvgTexture

[Brutzman, Donald (Don) (CIV)]

The relationship between a tangent and a normal is… orthogonal, literally.

 

*	Wikipedia: Tangent
*	https://en.wikipedia.org/wiki/Tangent

 

*	Wikipedia: Normal (geometry)
*	https://en.wikipedia.org/wiki/Normal_(geometry)

 

Given a surface, you can convert a normal to a tangent (and vice versa).

 

Regarding DOM, it is Document Object Model used to create a tree of element/attribute/value strings  corresponding to an HTML page.  Suggest reading the respective specifications, or summaries, in order to understand how it is a quite different from glTF.

 

all the best, Don

-- 

Don Brutzman  Naval Postgraduate School, Code USW/Br        brutzman at nps.edu

Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA    +1.831.656.2149

X3D graphics, virtual worlds, Navy robotics https:// faculty.nps.edu/brutzman

 

From: John Carlson <yottzumm at gmail.com> 
Sent: Thursday, September 29, 2022 12:05 PM
To: Brutzman, Donald (Don) (CIV) <brutzman at nps.edu>
Cc: Michalis Kamburelis <michalis.kambi at gmail.com>; X3D Public Mailing List (x3d-public at web3d.org) <x3d-public at web3d.org>
Subject: Re: [x3d-public] X3D Working Group meeting 23 SEP 2022: Mantis issues review, SvgTexture

 

On Thu, Sep 29, 2022 at 12:42 PM Brutzman, Donald (Don) wrote


2.1.  Tangent vectors are normal to a surface.  X3D has a Normal node, so an
advanced authoring can likely match such functionality.

 

I don’t understand the first sentence.   Information is only needed if the first sentence is correct.

 

I will try to me tomorrow or when the next meeting is.   The real purpose is to inquire into next meeting.

 

If someone is preparing a glTF to DOM converter, can I participate?

 

John

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