[x3d-public] loadURL browser object SAI function proposal

[John Carlson]

Nope.  This is the only version I could get working:

        function load_X3DOM_JSON(jsobj, selector) {
                var doc = document.querySelector(selector);
                if (doc.hasRuntime && doc.runtime.ready) {
                        doc.runtime.loadJS(jsobj);
                }
                // remove all text nodes in scripts (and fields too, sigh)
                $(selector+" Script").empty();
        }

This same version doesn’t work below, only works on localhost, but I swear I tested it:  It’s gotta be caching or????

https://coderextreme.net/X3DJSONLD/src/main/html/prototypes.html

Now it’s working.  NO changes on coderextreme.net at all.

I can’t get any other version of this code working, including adding urls, etc. Suggestions for replacement code are welcome, or pull requests to X3DJSONLD

Various attempts at reloading the page have been tried too.

John
Sent from Mail for Windows 10

From: John Carlson
Sent: Monday, May 28, 2018 5:51 PM
To: Andreas Plesch
Cc: X3D Graphics public mailing list
Subject: RE: [x3d-public] loadURL browser object SAI function proposal

Figured it out I think.  Testing.

John

Sent from Mail for Windows 10

From: John Carlson
Sent: Monday, May 28, 2018 5:47 PM
To: Andreas Plesch
Cc: X3D Graphics public mailing list
Subject: RE: [x3d-public] loadURL browser object SAI function proposal

Well, when I take loadJS out of my code, it ceases to function?

I’m frankly puzzled.

John

Sent from Mail for Windows 10

From: Andreas Plesch
Sent: Monday, May 28, 2018 5:36 PM
To: John Carlson
Cc: X3D Graphics public mailing list
Subject: Re: [x3d-public] loadURL browser object SAI function proposal

Not sure if loadJS would be a good idea: It is literally one line:
browser.replaceWorld(browser.createX3DfromJS(jsobject))
Error/null checking needs to occur in both of these functions anyways.
loadURL is mainly available to hide Promises.

-Andreas


On Mon, May 28, 2018 at 5:06 PM, John Carlson <yottzumm at gmail.com> wrote:
> I added loadJS, too.  I can probably take it out, since it doesn’t use an
> asynchronous nature.  However, it is convenient.
>
>
>
>
>
> Here’s an example:
>
>
>
> https://coderextreme.net/X3DJSONLD/src/main/html/prototypes.html
>
>
>
> (note it uses an x3dom-full.debug.js on the site).
>
>
>
> John
>
>
>
> Sent from Mail for Windows 10
>
>
>
> From: Andreas Plesch
> Sent: Monday, May 28, 2018 4:01 PM
> To: X3D Graphics public mailing list
> Subject: [x3d-public] loadURL browser object SAI function proposal
>
>
>
> Table 7.3 list the browser object SAI functions for JS:
>
>
>
> http://www.web3d.org/documents/specifications/19777-1/V3.3/Part1/functions.html#t-FunctionsBrowserObject
>
>
>
> So in order load a new scene from a URL into the current browser, one
>
> first creates a new x3dscene from the URL and then replaces the
>
> current world with the new scene.
>
>
>
> John and I are adding these browser SAI functions more formally to
>
> x3dom, along with supporting json as string, url, or object using
>
> John's parser and expander. It works pretty well but it turned out to
>
> be useful to add an additional function: loadURL(url).
>
>
>
> It just just combines the two steps into one. Apart from addressing
>
> the most common use case for these functions by making this easier,
>
> loadURL also hides the asynchronous nature of downloading which is
>
> strongly preferred these days. An app does not block while potentially
>
> downloading slowly, or finally timing out. The function knows
>
> internally when the download is available and then replaces the world.
>
> In x3dom there is then another user definable function which is called
>
> when the world is completely loaded. I think there is an equivalent
>
> event in x3d. So the function is still asynchronous but allows for
>
> familiar methods to proceed when the scene is available.
>
>
>
> Practically, for x3dom users, having loadURL means not having to know
>
> or learn Promises and still have a performant, and easy way to load a
>
> new scene.
>
>
>
> Here is an example which loads new scenes in various ways:
>
> https://rawgit.com/x3dom/x3dom/browserSAI/test/functional/runtime.html#
>
> The expanded world option loads remote json, after expanding protos.
>
>
>
> My question is then if other x3d browser have such a convenience
>
> loadURL SAI function, potentially asynchronous, and if there is an
>
> informal standard to follow.
>
>
>
> -Andreas
>
>
>
> --
>
> Andreas Plesch
>
> Waltham, MA 02453
>
>
>
> _______________________________________________
>
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>
> x3d-public at web3d.org
>
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>
>



-- 
Andreas Plesch
Waltham, MA 02453



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