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

[Brutzman, Donald (Don) (CIV)]

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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