[vtkusers] vtkCubeAxesActor FlyMode changed on the fly does not take place until mouse action

[Sebastien Calvi]

Hello Vtk Developers,

This little report to mention that when one changes the FlyMode of the vtkCubeAxesActor and call vtkRenderWindow::render(), well, nothing happens.
This because inside void vtkCubeAxesActor::DetermineRenderAxes( vtkViewport *viewport ) there is a simple check at the very beginning:
for ( i = 0; i < 4; ++i ) {

        if ( fabs( orientation[i] - OrientationWXYZ[i] ) > VTK_DBL_EPSILON )
            break;
    }

So, if the orientation has not changed then we just exit and the FlyMode modification is not taken into account.

I won't qualify that as a "bug" but I believe that it will be great to be able to have the FlyMode modification taken into account.

Thank you,
Sebastien.
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