I’m fairly new to Collada, but…
Many SketchUp models I import into my viewer seem wrong. All of the materials have a transparency color of 1,1,1,1 and transparency of 0, which means that they should not be visible at all.
As an example, I’ll refer to the AT&T Ball Park model:
http://sketchup.google.com/3dwarehouse/ … revstart=0
Consider the geometry node with ID=“mesh12-geometry” (line 1826).
The first triangle group renders most of the building in a simple “stucko” texture (via “material_3_1_8”). Without blending this is all that is visible. Removing it, then other textures can be seen. I assume that some type blending is necessary, but I’m not clear how to get that information out of the collada file. “material_3_1_8” defines transpareny as described above, but I don’t see how this is useful.
I have read other (older) posts that essentially say that SketchUp is not to spec. Is this still correct? I hope not, as SketchUp appears to be a huge source of free content. I am hoping that I am overlooking something in this file.
As a side note, I am using FCollada for parsing the dae file.
Thanks for any help.