Hi Alessandro,

For type of thinsg you are doing there are two main ways to animation
things - to animate the camera path, or to animate the objects in the
scene.

I'm not familiar with 3DMax's export to the OSG so can't comment
specifically on this, but I'd suspect its created an AnimationPath
attached to a Transform which is above the planet, so the objects is
moving  and the camera is stationary.  Then you have your transparent
sphere, and I'd guess that this is not under the planets Transform
node so isn't moved with it.

To fix things you either need to put the sphere under the same
Transform as the planet, or you need to attach the AnimationPath to
viewers Camera.

Robert.

On 6/5/07, alessandro terenzi <[EMAIL PROTECTED]> wrote:
I'm experiencing the following problem:

I exported a model from 3dsmax to OSG, the model consist of 2 objects:

- a planet that is animated in order to follow a circular path
- a semi-transparent sphere linked to the planet (its purpose, in OSG,
should be to highlight the planet when the mouse move over the planet)

So, in 3dsmax, I linked the sphere to the planet, because it should follow
the animated planet. In my OSG application the planet is shown from the very
beginnig of the application, and it starts following the path immediatly. On
the other hand, I chose to hide the sphere (setting the corrensponding
nodemask to 0x00000000) until the mouse moves over the planet, but I see
that when that event occurs, the sphere is shown (I set nodemask to
0xFFFFFFFF) but not in the same position of the planet (as I expected). I
mean that the sphere follows the same path as the planet but it seems that
the animation started just when I unhid the sphere, so it is late with
respect to the planet...

How can I solve the problem? Is it related to the fact that I'm
hyding/unhyding using the nodemask?
Is there a way to let the animation start even though the corresponding node
is not visible?

Thanks!
Regards.

Alessandro
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