[vtkusers] vtkPicker returned actor

[David Gobbi]

On Mon, Feb 29, 2016 at 9:39 AM, Lonni Besançon <lonni.besancon at gmail.com>
wrote:

> The spacing is 1 along the three axis.
> The origin is -51,-46,0.
>
> GetMapperPosition is always between -0.5 and 0.5 and therefore the
> computation I make afterwards as you suggested with the resliceAxesMatrix
> is
> always comprised between 50.5 and 51.5 for the X axis, and 46.5 and 47.5
> for
> the y axis.
>

It seems to me that the value returned by GetMapperPosition() is wrong (at
least,
its wrong for when PickTextureDataOn()).  And if that is wrong, then the
result
from resliceAxesMatrix->MultiplyPoint() will also be wrong.  So I will look
into
this when I have a break from work.

In the meantime, you can compute an "approximate" position from the IJK
values,
by multiplying by the Spacing and adding the Origin.

 - David
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