Reversed normals for DAE model since 7.x

[GoogleCodeExporter]

All DAE models are rendered with reversed normals. This has been introduced by 
version 7.x as all was working fine in 6.x

Which plugin version are you using? 7.0.1.8244

Which browsers and operating systems are affected?
Probably all. Tested on WinXP/7 - Chrome/Firefox/IE

Please provide any additional information (code snippets/links) below.

Original issue reported on code.google.com by xtas...@gmail.com on 1 Nov 2012 at 8:08

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Original comment by jli...@google.com on 3 Nov 2012 at 12:01

• Added labels: Internal-7468291

[GoogleCodeExporter]

Unable to reproduce - can you supply a model (and ideally some associated code) 
demonstrating the issue?

Original comment by jli...@google.com on 5 Nov 2012 at 6:18

[GoogleCodeExporter]

Let's be a bit more clear: the shading used to light the models appears to use 
the inverse of the polygon normal which, as a consequence, makes all polygons 
that should  be highlighted, darker and all that should be in the shade, 
brighter.

I tested this with a NVidia GPU.

The effect is visible on every Collada model imported via the API, KMZ and even 
on all the old 3D buildings.

I recommend you to go through some of the "official" demos while switching 
between version 6 and version 7:
http://www.barnabu.co.uk/geapi/flightsim/
http://earth-api-samples.googlecode.com/svn/trunk/examples/kml-fetch-good.html

Please also read this thread 
https://groups.google.com/forum/#!topic/3dwh/zFX2bwFsAwQ from the "3D Modeling 
for Google Earth & Maps" group. Please ask Mr. CraigD from Google (a colleague 
of yours I presume) since he appears to understand what the issue is.

You can also try my application http://www.gefs-online.com and compare with 
screen-shots of simply try it with both with 6.x and 7.x

Finally, just browse Google Earth with the old buildings layer on and I am sure 
you will end up by noticing something wrong.

If, you need me to be more explicit... well, I will try again.

Regards,

Xavier Tassin

Original comment by xtas...@gmail.com on 5 Nov 2012 at 9:30

[GoogleCodeExporter]

Some screenshots to help find out what is going on.

This is the Google Earth plugin rendering DAE files exported from Sketchup. In 
version 6, they used to look exactly like in Sketchup. The screenshots show the 
two rendering (6 and 7) side by side. I am running Chrome on Win7 with a Nvidia 
GeForce 610M but had the same result on XP with a GeForce 6800 and a Quadro 
4000.

http://gefs-online.com/screenshots/1.jpg
http://gefs-online.com/screenshots/2.jpg
http://gefs-online.com/screenshots/3.jpg
http://gefs-online.com/screenshots/4.jpg

Original comment by xtas...@gmail.com on 6 Nov 2012 at 7:36

[GoogleCodeExporter]

Hi,

Did you manage to confirm/reproduce this issue? Do you need any extra material, 
test case?

Regards,

Xavier Tassin

Original comment by xtas...@gmail.com on 16 Nov 2012 at 1:26

[GoogleCodeExporter]

Original comment by jli...@google.com on 16 Nov 2012 at 5:38

• Changed state: Confirmed