Could somebody help me and make the situation with <aspect_ratio> element clear? According to the specs (1.4.1):
"The aspect ratio is defined as the ratio of a pixel’s height over the pixel’s width; therefore, the aspect ratio can be derived from, or be used to derive, the field of view parameters: aspect_ratio = yfov / xfov."
That seems to be incorrect; what we actually need is image aspect ratio.
For example, default camera xfov in 3DS Max is 45 degrees, it corresponds to yfov = 36.6(6) (assuming image aspect ratio being 4:3). Yet default pixel aspect ratio is 1.0. Thus, COLLADAMAX exports camera parameters as follows:
which is specs-correct, but useless, cause I cannot restore yfov now.
The question is: is that an error in specs or my misunderstanding? Thanks![/b]