[vtk-developers] VtkLineWidget2 InteractionEvent distance

[Carlos Martinez]

Hi David,

Thanks for your answer but i think isn't the problem here.This is a dummy
project and I'm moving the handlers only inside the area of the sphere and
pick doesn't return 0 in any of the calls to the method.
I checked it previously and now (just in case).

I sent 3 captures:

1- First 2 clicks, the 2 white spheres are from the vtklinewidget2.
2- Wrong case (you can see the line because the points are not on the
surface of the sphere). I checked it with the camera.
3- Correct case (you can't see the line between the points because they are
on the surface of the sphere).

I don't know what's happening here!

Thanks in advance.


2014-07-16 17:57 GMT+02:00 David Cole <dlrdave at aol.com>:

> The documentation for "Pick" says "Return non-zero if something was
> successfully picked."
>
> But you are ignoring the return value of Pick.
>
> So how do you know if something was successfully picked or not?
>
> Calling GetPickPosition is only well-defined, and will only give you a
> good value if Pick returned non-zero.....
>
>
> HTH,
> David C
>
>
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