[x3d-public] TextureProperties - borderWidth upper limit constrained to 1 or made unbounded?

[Leonard.Daly at realism.com]

Normally I just read these, but this seems to scream out for a sanity 
check.

What happens if the specified border size is greater than the texture or 
even greater than the rendered size of the geometry. There may al.so bee 
the need to describe what happens if TextureTransform or 
TextureCoordinate is used.

In HTML5, the border size of a box is used in the determination of 
layout. A large border size increases the space required by the box.

Leonard Daly



On 2022-04-24 12:02, Brutzman, Donald (Don) (CIV) wrote:
> Current issue needing group discussion:
> 
> 	* Mantis 18.4.9 TextureProperties - borderWidth upper limit
> 	* https://www.web3d.org/member-only/mantis/view.php?id=921
> 	* Roy Wlamsley: “In the signature for the TextureProperties node
> the borderWidth field is listed as being of type SFInt32, having a
> default value of zero, and having limits of [0,1]. This implies that
> only a single pixel may be used as a border. Is this correct? Or
> should the limits be [0,inf) so that any number of pixels can be used
> as a border?
> 
> 	* X3D4 Architecture, Texturing component, 18.4.9 TextureProperties
> 	*
> https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-CD1/Part01/components/texturing.html#TextureProperties
> 	* SFInt32     [in,out] borderWidth         0         [0,1]
> 	* “The _borderWidth_ field describes the number of pixels to use
> for a texture border.”
> 
> Leaving _borderWidth_ unconstrained seems like a useful presentation
> feature, especially for animation highlighting individual textures.
> 
> HTML5 allows specification of border-width in pixels (default) or
> percent or by enumeration.  We will stick with pixels only, not making
> any changes to functionality during this final review..
> 
> 	* CSS Backgrounds and Borders Module Level 3
> 	* W3C Candidate Recommendation Draft, 26 July 2021
> 	* 3.3. Line Thickness: the border-width properties
> 	* <line-width> = <length [0,∞]> | thin | medium | thick
> 	* https://www.w3.org/TR/css-backgrounds-3/#border-width
> 
> Please advise if any problems seen with removing upper bound, absent
> any objections we will apply the change.
> 
> 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
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