Well, in some cases I would definately agree with you: documentation is
usually difficult to answer specific questions that deal with problems
that people don't often run into. However, this problem: the Projection
Matrix, is a fundamental (one of the first things you learn in Computer
Graphics) concept that is completely hidden from you in Java3D. This is
also not a result of poor documentation, but the lack of open source.
This is something that was specifically taken out of the release version
for a reason, but not sure why. It would be very helpful for the code (or
pseudo code).
Blaine
On Sun, 11 Feb 2001, David wrote:
> I don't have an answer to your question unforunately. I just wanted to say
> we all feel your pain when it comes to documentation. Between the API doc
> and the usage doc there is probably, what, 500 pages of docs? Yet it still
> isn't enough. I wouldn't want to write it myself. The best thing we can do
> is keep submitting solutions and explanations to Justin Couch to add to the
> FAQ pages.
>
> Dave Yazel
>
> ----- Original Message -----
> From: Blaine Alex Bell <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Saturday, February 10, 2001 8:07 PM
> Subject: [JAVA3D] Projection Matrix
>
>
> I am trying to compute the projection matrix Java3D uses based on the
> information in mainly the View class, but it also depends on the Canvas3D,
> Screen3D, Physical Body, and Physical Environment (and possibly more?).
> My frustration is building up based on poor documentation and complicated
> policies (many, many different policies and combinations). I was
> wondering if anyone has already done this? Or possibly the someone who
> actually did this could give us the code (or pseudo-code) to calculate it?
>
> Also, is it possible to get the projection matrix? I have tried to set up
> my viewing policies, then change to Compatability Mode to get the VpcToEc,
> but by changing modes, it resets it to the identity matrix.
>
> Thanks in advance,
>
> Blaine
>
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