[x3d-public] ProtoDeclarations via SAI ?

Wed Oct 26 16:07:40 PDT 2016

> Message: 3
> Date: Tue, 25 Oct 2016 21:00:28 +0000
> From: doug sanden <highaspirations at hotmail.com>
> To: X3D Graphics public mailing list <x3d-public at web3d.org>
> Subject: Re: [x3d-public] ProtoDeclarations via SAI ?
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>
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>
> Doesn't look promising.
> I find the javascript SAI doc easier to read.
> http://www.web3d.org/documents/specifications/19777-1/V3.3/index.html
> x no way to create a protodeclare that I can see
> x even if you created a blank one, doesn't look like there's a way to
create fields and add them
> Q. how do scene design tools do it?
> H:  through a modified design-time SAI
> -Doug

Ok, I think this is then not a priority.

There may be DOM strategies to achieve functionality similar to
ProtoDeclare and ProtoInstance such as templating engines.

Should it be a design goal of the SAI standard to actually enable a fully
featured scene authoring tool which only uses SAI methods ?

Andreas

________________________________________
> From: x3d-public <x3d-public-bounces at web3d.org> on behalf of Andreas
Plesch <andreasplesch at gmail.com>
> Sent: October 25, 2016 2:31 PM
> To: X3D Graphics public mailing list
> Subject: [x3d-public] ProtoDeclarations via SAI ?
>
> I am working on adding Proto support for cobweb_dom. While
adding/modifying ProtoInstances via the DOM is very useful (and seemingly
working in a dev. branch), I am unsure about the possibility of
adding/modifying(?) ProtoDeclarations via the DOM.
>
> The SAI spec. seems to specify that this should be possible:
>
>
http://www.web3d.org/documents/specifications/19775-2/V3.3/Part02/servRef.html#ProtoDeclarationHandling
>
http://www.web3d.org/documents/specifications/19777-1/V3.3/Part1/functions.html#t-ExecutionContextProperties
>
> Wait ..
>
>
http://www.web3d.org/documents/specifications/19777-1/V3.3/Part1/functions.html#PrototypeServices
>
> says that ProtoDeclarations cannot be instantiated (by SAI methods).
>
> Does that mean it should not be possible to add/update ProtoDeclarations
within a scene by an x3d script ? Is there an example script somewhere ?
All ProtoDeclarations a scene can ever expect to use should be available
when the scene is first loaded by the x3d browser ?
>
> If not, it probably means that cobweb_dom should not try to do that as
well (although it may be possible).
>
> Any feedback welcome,
>
> -Andreas
>
> --
> Andreas Plesch
> 39 Barbara Rd.
> Waltham, MA 02453
>
>
>
> ------------------------------
>
> Message: 4
> Date: Tue, 25 Oct 2016 21:16:10 +0000
> From: doug sanden <highaspirations at hotmail.com>
> To: X3D Graphics public mailing list <x3d-public at web3d.org>
> Subject: Re: [x3d-public] ProtoDeclarations via SAI ?
> Message-ID:
>         <
BN6PR14MB177807D79E386ADB2AD5CF2DB6A80 at BN6PR14MB1778.namprd14.prod.outlook.com
>
>
> Content-Type: text/plain; charset="iso-8859-1"
>
> freewrl stores its protoDeclares and externProtoDeclares in binary proto
(aka broto) form - almost the same as a protoInstance, except with a flag
saying its 'not live' and with any contained protoInstances 'shallow
copied' meaning they have no body.
> ProtoDeclare name=A
> Body {
>   ProtoInsance name=B Body { -nada / blank / ziltch- }
> }
> }
> Then when instancing an A, the body for contained instance name= B is
filled in / deepened.
> That keeps declares light with lazy/delayed recursive instancing.
> That also implies if new SAI functions are designed for hacking Instances
or Declares, they would work on either/both.
> One idea is for browsers to have a built in 'stub' protodeclare, and a
function to create it with a new name=, and add to the list of
protodeclares.
> Then a few functions for creating fields on it, and ISing, and
shallow-instancing.
>
>
> ________________________________________
> From: x3d-public <x3d-public-bounces at web3d.org> on behalf of doug sanden <
highaspirations at hotmail.com>
> Sent: October 25, 2016 3:00 PM
> To: X3D Graphics public mailing list
> Subject: Re: [x3d-public] ProtoDeclarations via SAI ?
>
> Doesn't look promising.
> I find the javascript SAI doc easier to read.
> http://www.web3d.org/documents/specifications/19777-1/V3.3/index.html
> x no way to create a protodeclare that I can see
> x even if you created a blank one, doesn't look like there's a way to
create fields and add them
> Q. how do scene design tools do it?
> H:  through a modified design-time SAI
> -Doug
> ________________________________________
> From: x3d-public <x3d-public-bounces at web3d.org> on behalf of Andreas
Plesch <andreasplesch at gmail.com>
> Sent: October 25, 2016 2:31 PM
> To: X3D Graphics public mailing list
> Subject: [x3d-public] ProtoDeclarations via SAI ?
>
> I am working on adding Proto support for cobweb_dom. While
adding/modifying ProtoInstances via the DOM is very useful (and seemingly
working in a dev. branch), I am unsure about the possibility of
adding/modifying(?) ProtoDeclarations via the DOM.
>
> The SAI spec. seems to specify that this should be possible:
>
>
http://www.web3d.org/documents/specifications/19775-2/V3.3/Part02/servRef.html#ProtoDeclarationHandling
>
http://www.web3d.org/documents/specifications/19777-1/V3.3/Part1/functions.html#t-ExecutionContextProperties
>
> Wait ..
>
>
http://www.web3d.org/documents/specifications/19777-1/V3.3/Part1/functions.html#PrototypeServices
>
> says that ProtoDeclarations cannot be instantiated (by SAI methods).
>
> Does that mean it should not be possible to add/update ProtoDeclarations
within a scene by an x3d script ? Is there an example script somewhere ?
All ProtoDeclarations a scene can ever expect to use should be available
when the scene is first loaded by the x3d browser ?
>
> If not, it probably means that cobweb_dom should not try to do that as
well (although it may be possible).
>
> Any feedback welcome,
>
> -Andreas
>
> --
> Andreas Plesch
> 39 Barbara Rd.
> Waltham, MA 02453
>
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> x3d-public mailing list
> x3d-public at web3d.org
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>
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