<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
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--></style></head><body lang=EN-US link=blue vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Well, when I take loadJS out of my code, it ceases to function?</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’m frankly puzzled.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>John</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986">Mail</a> for Windows 10</p><p class=MsoNormal><o:p> </o:p></p><div style='mso-element:para-border-div;border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='border:none;padding:0in'><b>From: </b><a href="mailto:andreasplesch@gmail.com">Andreas Plesch</a><br><b>Sent: </b>Monday, May 28, 2018 5:36 PM<br><b>To: </b><a href="mailto:yottzumm@gmail.com">John Carlson</a><br><b>Cc: </b><a href="mailto:x3d-public@web3d.org">X3D Graphics public mailing list</a><br><b>Subject: </b>Re: [x3d-public] loadURL browser object SAI function proposal</p></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Not sure if loadJS would be a good idea: It is literally one line:</p><p class=MsoNormal>browser.replaceWorld(browser.createX3DfromJS(jsobject))</p><p class=MsoNormal>Error/null checking needs to occur in both of these functions anyways.</p><p class=MsoNormal>loadURL is mainly available to hide Promises.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>-Andreas</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>On Mon, May 28, 2018 at 5:06 PM, John Carlson <yottzumm@gmail.com> wrote:</p><p class=MsoNormal>> I added loadJS, too. I can probably take it out, since it doesn’t use an</p><p class=MsoNormal>> asynchronous nature. However, it is convenient.</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> Here’s an example:</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> https://coderextreme.net/X3DJSONLD/src/main/html/prototypes.html</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> (note it uses an x3dom-full.debug.js on the site).</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> John</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> Sent from Mail for Windows 10</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> From: Andreas Plesch</p><p class=MsoNormal>> Sent: Monday, May 28, 2018 4:01 PM</p><p class=MsoNormal>> To: X3D Graphics public mailing list</p><p class=MsoNormal>> Subject: [x3d-public] loadURL browser object SAI function proposal</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> Table 7.3 list the browser object SAI functions for JS:</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> http://www.web3d.org/documents/specifications/19777-1/V3.3/Part1/functions.html#t-FunctionsBrowserObject</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> So in order load a new scene from a URL into the current browser, one</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> first creates a new x3dscene from the URL and then replaces the</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> current world with the new scene.</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> John and I are adding these browser SAI functions more formally to</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> x3dom, along with supporting json as string, url, or object using</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> John's parser and expander. It works pretty well but it turned out to</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> be useful to add an additional function: loadURL(url).</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> It just just combines the two steps into one. Apart from addressing</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> the most common use case for these functions by making this easier,</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> loadURL also hides the asynchronous nature of downloading which is</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> strongly preferred these days. An app does not block while potentially</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> downloading slowly, or finally timing out. The function knows</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> internally when the download is available and then replaces the world.</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> In x3dom there is then another user definable function which is called</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> when the world is completely loaded. I think there is an equivalent</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> event in x3d. So the function is still asynchronous but allows for</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> familiar methods to proceed when the scene is available.</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> Practically, for x3dom users, having loadURL means not having to know</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> or learn Promises and still have a performant, and easy way to load a</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> new scene.</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> Here is an example which loads new scenes in various ways:</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> https://rawgit.com/x3dom/x3dom/browserSAI/test/functional/runtime.html#</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> The expanded world option loads remote json, after expanding protos.</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> My question is then if other x3d browser have such a convenience</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> loadURL SAI function, potentially asynchronous, and if there is an</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> informal standard to follow.</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> -Andreas</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> --</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> Andreas Plesch</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> Waltham, MA 02453</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> _______________________________________________</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> x3d-public mailing list</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> x3d-public@web3d.org</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> http://web3d.org/mailman/listinfo/x3d-public_web3d.org</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>-- </p><p class=MsoNormal>Andreas Plesch</p><p class=MsoNormal>Waltham, MA 02453</p><p class=MsoNormal><o:p> </o:p></p></div></body></html>