Hello David,
I think we have come up with a solution. I haven't quite nailed down what
the exact problem is, but I have found that when I zoom out ( by moving the
View transform group toward the screen), the limits of the 'arc of
visibility' increases. If I move it back far enough, the whole wave will be
visible from any angle. Can you try this on your code and see if the same
happens?? Alternately, it may also work by moving the content back away
from the user ( I have yet to try this).....
In any case, the bigger issue that I haven't solved yet is:::::: what
causes this disappearing?? Is the problem in the View object?? the
ViewPlatform?? clearly objects shouldn't disappear due to the angle it is
viewed from... Since my wave disappears in the same place every time I run
it, I think a portion of the geometry is being rotated outside a specific
region ( what the region is - I don't know), which causes the whole thing
to disappear. Could this have something to do with the field of view from
the PhysicalBody??? (just a thought).
Cheers,
B.
---------------------------------
Oceanic Consulting Corporation
PO Box 28009
St. John's , NF Canada
A1B 4J8
(709) 722-9060/9064 (Fax) http://www.oceaniccorp.com
---------------------------------
-----Original Message-----
From: David Halle [SMTP:[EMAIL PROTECTED]]
Sent: Tuesday, August 17, 1999 9:06 AM
To: [EMAIL PROTECTED]
Subject: Re: [JAVA3D] disappearing wave??
Hi, Barry!
I've got the same problem (I think).
I've got a Data Elevation Model (earth ground) consisting of TriangleArray,
When I rotate my camera with an angle of....(don't know the value) it
diseapear.
I post a few month ago the problem without answer, may be this time it will
be better?
Could you send a piece of your code I could test to see if this is the same
problem.
David HALLE.
--------------------------
E-Mail:[EMAIL PROTECTED]
----- Original Message -----
From: Barry Walsh <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, August 13, 1999 6:20 PM
Subject: [JAVA3D] disappearing wave??
> I have a wave ( ocean wave ) consisting of a QuadArray. In different
> simulations it is a variety of sizes. The problem is that when I rotate
the
> wave outside of about 30 degrees of its end to end alignment, the entire
> wave disappears. I have tried:
> 1. adjusting the size of the bounding sphere that governs the rotate
> behavior. This seems to have the effect of extending the limits of
> visibility (out to about 50 degrees either side) but it is upredictable
and
> intermittent, I'm not sure why.
> 2. adjusting the BackClipDistance in View. This ( as I expected) had no
> effect. The whole wave disappears, not just a portion of it.
> 3. adjusting the normals, several different normals calculations were
> tried. All had the same effect - no change.
>
> I'm stumped. Any ideas??
>
>
===========================================================================
To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
of the message "signoff JAVA3D-INTEREST". For general help, send email to
[EMAIL PROTECTED] and include in the body of the message "help".
