[vtkusers] construct from vtkCamera from opengl Variables

[Dan Lipsa]

If you have a scene that you want to render in VTK, the easiest would be to
build a vtkDataset (vtkPolyData most likely) and then
render that in VTK. You don't need to worry about the OpenGL transform or
interaction as VTK does this for you.

Take a look at
https://lorensen.github.io/VTKExamples/site/
Cxx / GeometricObjects
for examples of how to do this.

Dan




On Sat, Dec 22, 2018 at 6:01 PM Elhassan Abdou <elhassan.abdou at gmail.com>
wrote:

> Dear All,
>
> I have a scene that I constructed using OpenGL and I want to rewrite the
> code using VTK.
> So I have view matrix (compose of, scaling in z, and translation in the
> x,y,z).
> I know I am rendering using perspective mode, so I have near plane, far
> plane and horizontal  fov.
>
> I tried to use vtkExternalOpenGL, but nothing is rendered.
>
> Can anyone give me help on how to adjust vtkOpenGLCamera to use these
> parameters to render the scene?
>
> Regards
> Elhassan
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