chetto1983 / jsc3d

Automatically exported from code.google.com/p/jsc3d
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Asus EEEPC shows only the empty canvas #28

Open GoogleCodeExporter opened 8 years ago

GoogleCodeExporter commented 8 years ago
What steps will reproduce the problem?
1. Loading http://dhtx.de/it/ek/Projekt%203D-Drucker.html on a smaller device 
like Netbooks.
2.
3.

What is the expected output? What do you see instead?
On my Desktop PC i see my "3D Printer under Dev." very nicely rendered.
On my Netbook (Asus EEEPC) i see only the empty canvas.

Please provide any additional information below.
I've investigated with Firebug (see on bottom)but i can't find the exact 
reason. I think too much Data perhaps!?
Is it planned to work with zipped Data?
Please answer, i'm an enthusiastic user of your Script!

LG
Dieter Hardt

Antwort-Header
Accept-Ranges   bytes
Cache-Control   max-age=1209600
Connection  Keep-Alive
Content-Length  3285454
Content-Type    text/plain
Date    Wed, 03 Jul 2013 12:55:18 GMT
Etag    "a8cac002-3221ce-4e08da09c1859"
Expires Wed, 17 Jul 2013 12:55:18 GMT
Keep-Alive  timeout=2, max=200
Last-Modified   Tue, 02 Jul 2013 20:59:56 GMT
Server  Apache
Anfrage-HeaderQuelltext anzeigen
Accept  text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Encoding gzip, deflate
Accept-Language de-de,de;q=0.8,en-us;q=0.5,en;q=0.3
Cache-Control   max-age=0
Connection  keep-alive
DNT 1
Host    dhtx.de
Origin  http://www.dhtx.de
Referer http://www.dhtx.de/it/ek/Projekt%203D-Drucker.html
User-Agent  Mozilla/5.0 (Windows NT 6.1; rv:22.0) Gecko/20100101 Firefox/22.0

Original issue reported on code.google.com by DieterHa...@googlemail.com on 3 Jul 2013 at 1:27

GoogleCodeExporter commented 8 years ago
It seems to be a cross-domain issue. In 
http://www.dhtx.de/it/ek/Projekt%203D-Drucker.html I found this:

  viewer.setParameter('SceneUrl', 'http://dhtx.de/it/ek/Dieterbot.obj');

As you can see in the implementation, jsc3d uses XmlHttpRequest to load object 
models. An absolute path description such as 
'http://dhtx.de/it/ek/Dieterbot.obj' will cause a cross-domain resource 
request. This will success only when 1) The server side must be configured 
properly to response to this kind of requests; 2) The browser has to support 
CORS feature.

The soluiton is quite straightforward. Just put the obj/mtl files (also image 
files if any) into the same domain with your page and change the model path 
which will be send to jsc3d to a relative form:

  viewer.setParameter('SceneUrl', '...(your-model-path)/Dieterbot.obj');

This makes it work correctly since the cross-domian request is removed.

If your application has to employ cross-domian requests anyway, you may find 
this link http://enable-cors.org/ very helpful on how to make it work.

Original comment by Humu2...@gmail.com on 3 Jul 2013 at 4:44