[vtkusers] scale viewport?

[José Eduardo Meireles]

Sorry for the slightly unclear description of my intent. The goal
really is to change change aspect ration of the scene.

Say I have spheres representing attributes of driving conditions. Data
is coming in different units with wildly different magnitudes for the
different axis (say X is ~ to speed, Y is ~ to number of people in the
car, and Z ~ to driver's age). As such, passing untransformed data as
coordinates can result in really bad plots, where spheres are is too
spread out or too clustered along one axis.

What I am doing is scaling the data before it gets passed to sphere
source, and it works ok, but I wonder it that is the canonical way of
doing it or if there's a better solution.




On Wed, Jan 15, 2014 at 12:32 PM, alethea <alethea at anatomage.com> wrote:
> It's a little unclear why you are trying to scale the scene.
> Have you considered simply changing the vtkCamera setup? Use Zoom if you are
> using a perspective camera, or SetParallelScale if you are using Parallel
> projection.
>
>
> José Eduardo Meireles wrote
>> Dear List,
>> Sorry for the beginners' question.
>> I am wondering if there's an easy way of scaling a scene without
>> directly scaling the data coordinates (which is what I'm doing right
>> now) and keeping each actor's geometry intact ( not making a pancake
>> out of a sphere).
>> Thanks a lot!
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