[x3d-public] node-java X3DJSAIL and 1 example that works, and one that doesn't
John Carlson
yottzumm at gmail.com
Sat Apr 11 20:16:06 PDT 2020
Progress. head is not a node and cannot be created with createNode()?
Thanks,
John
On Sat, Apr 11, 2020 at 10:11 PM John Carlson <yottzumm at gmail.com> wrote:
> Duh, there's no X3D DOM node without x_ite_dom?
>
> John
>
> On Sat, Apr 11, 2020 at 10:05 PM John Carlson <yottzumm at gmail.com> wrote:
>
>> I tried pasting my SAI code into developer tools as you suggest:
>>
>> var browser = X3D.getBrowser();
>> var scene = browser.currentScene;
>> X3D0 = document.querySelector("X3D");
>> X3D0.profile = "Immersive";
>>
>> And got:
>>
>>
>>
>> VM55:4 Uncaught TypeError: Cannot set property 'profile' of null
>> at <anonymous>:4:14
>>
>> Suggestions? I must be missing something in X_ITE?
>>
>> John
>>
>> On Sat, Apr 11, 2020 at 8:40 AM Andreas Plesch <andreasplesch at gmail.com>
>> wrote:
>>
>>> Hi John,
>>>
>>> x_ite just follows standard SAI, internal or external:
>>>
>>> //get Browser
>>> browser=X3D.getBrowser(); //X3D is global defined by x_ite.js
>>> //get current scene
>>> scene=browser.currentScene;
>>> //make shape node
>>> shape=scene.createNode('Shape');
>>> //make box node
>>> box=scene.createNode('Box');
>>> //set geometry field
>>> shape.geometry=box;
>>> //add as root node (for example)
>>> scene.addRootNode(shape);
>>>
>>> For me the easiest way to experiment with scripting like this, is to
>>> use the Chrome dev tools console with a simple scene like:
>>>
>>> https://www.web3d.org/x3d/content/examples/Basic/UniversalMediaPanoramas/desert3X_ITE.html
>>> Following the steps will give you a white box visible in the active
>>> scene.
>>>
>>> x3dom uses the DOM as an interface to the scene. So you create DOM
>>> elements using HTML5 methods and add those to the Scene DOM element.
>>> There may be a way to avoid using the DOM and use internal, SAI like
>>> functions. For example, the javascript domNode._x3dom property gives
>>> you access to fields and methods for a node. But usually it is easiest
>>> and most interoperable on a HTML5 page to use the DOM.
>>>
>>> The field names are the same across browser but the internal
>>> representation of field values (as a javascript object) is very
>>> different. So one cannot use the results of SAI x_ite calls directly
>>> with x3dom, or vice versa. It is necesssary to go through encodings.
>>>
>>> I do not think X3DJSAIL deals a lot with Browser or ExecutionContext
>>> SAI functions since they are tied to the specific browser but I may be
>>> wrong.
>>>
>>> Andreas
>>>
>>> On Sat, Apr 11, 2020 at 2:58 AM John Carlson <yottzumm at gmail.com> wrote:
>>> >
>>> > Could Andreas explain how to use createNode in the context of X_ITE
>>> SAI?
>>> > I think that createNode may be the one significant thing missing from
>>> X3DOM SAI.
>>> > There's an unrelated one in the physics code.
>>> >
>>> > That is, you use createNode to createNodes in SAI, then you use the
>>> fields of the returned object. Are these the same across browsers?
>>> >
>>> > Here's how to get a node from the standard:
>>> >
>>> > Browser.currentScene.createNode('Shape');
>>> >
>>> > Again, there is no createNode in X3DJSAIL to speak of.
>>> >
>>> > Thanks,
>>> >
>>> > John
>>> >
>>> > On Sat, Apr 11, 2020 at 1:24 AM John Carlson <yottzumm at gmail.com>
>>> wrote:
>>> >>
>>> >> We have 2 versions of JavaScript server side API, Nashorn and Node,
>>> both dependent on X3DJSAIL, and the code looks similar. However, we do not
>>> have a JavaScript native version yet, even with JSweet (it's incomplete).
>>> >>
>>> >> I believe that we should pursue an external SAI compatible with
>>> X_ITE, since X3DOM already has an external SAI.
>>> >>
>>> >> Below is an example of "External" with X_ITE. Note that X3D is
>>> required to be defined, and x_ite.js should be loaded before X3D is
>>> called. So how do we do that in node? This is why I've been suggesting
>>> headless browsers!
>>> >>
>>> >> ...so...I need to figure out an example of Transform in the
>>> standard. It would seem like the thing to do would be to implement
>>> createNode? Are there any examples of createNode? Yes, in X_ITE at
>>> least. Do we need to create an execution context to use it? Yes!
>>> >>
>>> >> Is there an X_ITE example of external createNode?
>>> >>
>>> >> Yes!
>>> >>
>>> >> As far as I can tell there is not a X3DOM version of ECMAScript SAI's
>>> createNode.
>>> >>
>>> >> So I think we should start with X_ITE as I said before, and try to
>>> create an External ECMAScript SAI script (not DOM).
>>> >>
>>> >> Do people agree that we should try to create an ECMAScript SAI
>>> example from outside X_ITE?
>>> >>
>>> >> It appears that we either have to start from X3D(), below. Can we
>>> make X3D() into an external SAI?
>>> >>
>>> >> Do we need a browser in nodejs?
>>> >>
>>> >> has anyone looked into chrome embedded framework?
>>> >>
>>> >> John
>>> >>
>>> >>
>>> >>
>>> >>
>>> -----------------------------------------------------------------------------
>>> >> function load_X_ITE_XML(content, selector) {
>>> >> X3D(function() {
>>> >> var browser = X3D.getBrowser(selector);
>>> >>
>>> browser.replaceWorld(browser.createX3DFromString(content));
>>> >> }, function() {
>>> >> alert("Failed to render XML to X_ITE");
>>> >> });
>>> >> }
>>> >>
>>> >> function load_X_ITE_DOM(element, selector) {
>>> >> X3D(function() {
>>> >> if (typeof X3D.getBrowser !== 'undefined') {
>>> >> var browser = X3D.getBrowser(selector);
>>> >> if (typeof browser !== 'undefined' && typeof
>>> browser.importDocument !== 'undefined') {
>>> >> var importedScene =
>>> browser.importDocument(element);
>>> >> browser.replaceWorld(importedScene);
>>> >> }
>>> >> }
>>> >> }, function() {
>>> >> alert("Failed to render DOM to X_ITE");
>>> >> });
>>> >> }
>>> >>
>>> >> function load_X_ITE_JS(jsobj, selector) {
>>> >> X3D(function() {
>>> >> if (typeof X3D.getBrowser !== 'undefined') {
>>> >> var browser = X3D.getBrowser(selector);
>>> >> if (typeof browser !== 'undefined' && typeof
>>> browser.importJS !== 'undefined') {
>>> >> var importedScene =
>>> browser.importJS(jsobj);
>>> >> browser.replaceWorld(importedScene);
>>> >> }
>>> >> }
>>> >> }, function() {
>>> >> alert("Failed to render JSON to X_ITE");
>>> >> });
>>> >> }
>>> >>
>>> -------------------------------------------------------------------------------------------------------------
>>> >> John
>>>
>>>
>>>
>>> --
>>> Andreas Plesch
>>> Waltham, MA 02453
>>>
>>
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