[vtkusers] Re: vtk picking

[Malcolm Drummond]

Sorry Paul - I wasn't saying you should use this method, I was saying that
the problem I suspected should have been taken care of, as it appears this
method is called.

I think you must spend some time tracking the exact behaviour of the
problem - you say sometimes when you pick above the actor you get a hit - is
this at the extreme top of the window or does the mouse distance from the
top correspond to the actor distance from the bottom? Is the X value always
correct (ie is it picking somewhere on a vertical line through the mouse)?
This would go a long way to tracking your problem down.

Also, what version are you using? and do the picks work OK in the sample
scripts?

Malcolm

----- Original Message -----
From: "Paul Tait" <paul at opes.com.au>
To: "Malcolm Drummond" <malcolm at geovision.co.za>
Sent: Friday, February 14, 2003 6:08 AM
Subject: vtk picking


> Hi Malcolm
>
> Well as you're the only one who replied to my question you're it!!
> Congratulations ;-)
>
> I searched for SetEventInformationFlipY()  and eventually found it in the
> CVS for the daily build. How would I use it?
>
> Also a thought occured to me that I'm using
> vtkInteractorStyleTrackballCamera
>
>
>
> would this affect my picking ?
>
>
>
> Paul
>