[vtkusers] Add sphere to current slice (vtkImageReslice)

[Enzo Matsumiya]

David,

If I click the same place several times, Z remains the same.

If I click off the image, XYZ are 0.

Actually I wasn't expecting a specific Z value.

The image has transparent pixels, yes.

If I use vtkCellPicker, Z is always 0 due to my setup, I believe (picker->Pick(click[0], click[1], 0, ren)).

Another test I just made is if I set my vtkImageReslicer output dimensionality to 3, instead of 2,
*the image won't render correctly*, but this sphere annotation will work the way I want (I can scroll through
the volume and see the spheres on the correct place I added them).


Thanks,

--
Enzo Ferlin Matsumiya
System Analyst

Skype: enzo.ferlin
Phone: +55 11 4057-5722
            +55 48 9130-2478

www.micromar.com <http://www.micromar.com/>




> On Feb 23, 2016, at 11:08, David Gobbi <david.gobbi at gmail.com> wrote:
> 
> Hi Enzo,
> 
> Maybe try some non-random clicks?
> 
> If you click in the same place twice, is z the same for both clicks?
> 
> If you click on the image, is z the same as when you click off the image?
> 
> What z value are you expecting?
> 
> Does the image have any transparent pixels?
> 
> If you switch to a different picker (e.g. vtkCellPicker) does it give the same results?
> 
>  - David
> 
> 
> On Tue, Feb 23, 2016 at 6:58 AM, Enzo Matsumiya <enzo.ferlin at micromar.com <mailto:enzo.ferlin at micromar.com>> wrote:
> Hello David,
> 
> Thanks for your reply.
> 
> Although your answer really helped me on something I would eventually struggle, my problem seems to be deeper.
> 
> This is the position for 6 random clicks:
> 
> x: 147.573 y: 22.5072 z: 6.81678
> x: 197.866 y: 83.5424 z: -2.80355e-05
> x: 85.5616 y: 83.0541 z: 6.81678
> x: 137.808 y: 116.257 z: -2.80355e-05
> x: 87.0264 y: -15.5787 z: 6.81678
> x: 103.628 y: 31.2963 z: -2.80355e-05
> 
> Clearly Z is wrong and I can't figure how to get it correctly (I'm using vtkPropPicker for now).
> 
> Rearranging my thoughts, now I think my previous problem was that the spheres were being added way too far from my volume.
> 
> Any help with that?
> 
> 
> Thanks,
> 
> --
> Enzo Ferlin Matsumiya
> System Analyst
> 
> Skype: enzo.ferlin
> Phone: +55 11 4057-5722 <tel:%2B55%2011%204057-5722>
>             +55 48 9130-2478 <tel:%2B55%2048%209130-2478>
> 
> www.micromar.com <http://www.micromar.com/>
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