[vtkusers] World orientation

[Rodrigo Valiña Gutiérrez]

Hi, this Python code may help you:

-first center the object and position camera and then rotate the
position to the desired angle:

    def orient_inter(self, pos):
        if pos == 0: # XY
            self.orient_handler((0.0,0.0,1.0))
        elif pos == 1: #XZ
            self.orient_handler((0.0,1.0,0.0),(0,0,1))
        elif pos == 2: #YZ
            self.orient_handler((1.0,0.0,0.0))
        elif pos == 3: #iso
            v = math.sqrt(1.0/3.0)
            self.orient_handler((v,v,v))

    def orient_handler(self, unit, up=(0.0,1.0,0.0)):
        for ren in self.rens:
            ren.ResetCamera() # posicion, tamanho
            fp = ren.GetActiveCamera().GetFocalPoint()
            p = ren.GetActiveCamera().GetPosition()
            dist = math.sqrt( (p[0]-fp[0])**2 + (p[1]-fp[1])**2 +
(p[2]-fp[2])**2 )
            ren.GetActiveCamera().SetPosition(fp[0]+dist*unit[0],
fp[1]+dist*unit[1], fp[2]+dist*unit[2])
            ren.GetActiveCamera().SetViewUp(up)

where unit is a unit vector with the desired direction. initially
would be: (0,0,1).

--
Rodrigo

On Thu, Jun 10, 2010 at 9:20 AM, Sergey Programmer <croooter at gmail.com> wrote:
> Hello colleagues,
>
> is there a way to reset to defaults world orientation? Sometimes after
> rotating operations one may want to center it by one button press.. I found
> camera reset function and hotkey (r), but it doesn't reset orientation -
> only zooming.
>
> Regards,
> Croot
>
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