[vtkusers] axis equal for vtk?

[Cory Quammen]

Imre,

Have you looked at the charting API, e.g., vtkChartXYZ? I don't know if
that does exactly what you want, but it may be more in line with what you
are after.

- Cory

On Sun, Dec 6, 2015 at 6:23 AM, Imre Goretzki <goretzki.imre at gmail.com>
wrote:

> Hey guys,
>
> here is a 2D example of what I wanted to do. I think data transformation
> would not be the correct way of doing this.
>
>
>
> Am 05.12.2015 um 09:35 schrieb Imre Goretzki:
>
> Cory,
>
> is it possible to change the tick of the axes? Right know using the
> transform filter is equivalent to the second image. Unfortunately that is
> not what I would like to have. I think the best way to do this is to change
> to tick of the Z-Dimension.
>
> The image has the dimensions 520x520x47. So the tick for x and y is 1, for
> z it should be 47/520. I don't want to change the data.
>
> Imre
>
> Am 04.12.2015 um 20:56 schrieb Cory Quammen:
>
> Imre,
>
> Your best bet is probably to transform the data itself rather than the
> user transform of the actors.
>
> vtkSmartPointer<vtkTransformFilter> transformFilter =
> vtkSmartPointer<vtkTransformFilter>::New();
> transformFilter->SetTransform(axis);
> transformFilter->SetInputData(<your input data>);
>
> HTH,
> Cory
>
> On Fri, Dec 4, 2015 at 1:48 PM, Imre Goretzki <goretzki.imre at gmail.com>
> wrote:
>
>> I have data like this:
>> http://i.imgur.com/CR2O8Ik.png
>> and I would like to "stretch" the Z-axis to get more like a cube
>> visualization.
>>
>> I used vtkTransform to transform the axes, but I would change the data if
>> I do this. I hope you understand what I want to do, e.g. is there a
>> possibility to change / stretch the ticks of a specific axis.
>>
>> The vtkTransform plot stretches to much:
>> http://i.imgur.com/DDUW91T.png
>> The data is deformed
>>
>> I use the vtkTransform like this:
>> vtkSmartPointer<vtkTransform> axis = vtkSmartPointer<vtkTransform>::New();
>> axis->Scale(1,1,10);
>>
>> dataActor->SetUserTransform(axis);
>> outlineActor->SetUserTransform(axis);
>>
>> I tried using the camera with the vtkTransform, but the only thing I got
>> from there, was an empty image or I had to zoom out greatly.
>>
>> For matlab reference, something like this:
>> http://de.mathworks.com/help/matlab/ref/axis.html?refresh=true
>>
>> Would be nice if you could help me
>>
>> Imre
>>
>>
>> Am 03.12.2015 um 22:20 schrieb Imre Goretzki:
>>
>>> Hey guys
>>>
>>> i'd like to ask you if there's a equivalent method for vtkRenderWindow
>>> for equalizing the axis, just like MATLABs axis equal. Could vtkAxesActor
>>> be helpful?
>>>
>>> I hope you can help
>>>
>>> Thanks
>>> Imre
>>>
>>>
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>
>
>
> --
> Cory Quammen
> R&D Engineer
> Kitware, Inc.
>
>
>
>


-- 
Cory Quammen
R&D Engineer
Kitware, Inc.
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