[vtkusers] Track and record user given rotations using a trackball?

[Ambar C]

Hi David - are the changes to the orientation and the position
variables made right as the user rotates the image using a mouse? Or
is there some 'done' mechanism that needs to be fed through?

On Fri, Oct 1, 2010 at 4:33 PM, David Doria <daviddoria at gmail.com> wrote:
> On Fri, Oct 1, 2010 at 7:14 PM, Ambar C <ambarc at gmail.com> wrote:
>>
>> Hi David,
>>
>> The problem I'm facing right now is that I can't seem to capture the
>> user's changes. If I apply a transform filter to capture the user
>> matrix, I don't get any change from the original. Would calling
>> getUserTransform immediately capture what I see on the screen (after
>> having made the changes with my mouse)?
>>
>> Best,
>> Ambar
>
> As I mentioned, the changes are applied to the Position and Orientation
> variables (which you can get with the GetPosition and GetOrientation
> accessors). The UserTransform is not changed unless you change it yourself.
> If this is still not clear, please provide some code (very short, but
> compilable) that demonstrates what you are trying to do and where it is
> going wrong.
> David