[vtkusers] How to set a camera's azimuth and elevation?

[Amy Squillacote]

Hi Chen,

In vtkCamera, there are Roll, Azimuth, and Elevation methods that rotate 
the camera by the angle specified. I'm not sure why there is both a Roll 
method and a SetRoll method.

- Amy

Hua-Mei Chen wrote:
>  
> Hi all,
>  
>     I am wondering how to set a camera's azimuth and elevation. There 
> is a SetRoll() method in vtkCamera to set the roll of a camera. 
> However, no similar methods exist for setting the azimuth and 
> elevation. Does anyone know why? And how do I achieve my goal using 
> other methods? Thank you.
>  
>  
> Chen
>  
>  
>  
>  
>  
> ----- Original Message -----
>
>     *From:* Anestis Koutsoudis <mailto:akoutsou at ipet.gr>
>     *To:* vtkusers at vtk.org <mailto:vtkusers at vtk.org>
>     *Sent:* Monday, September 29, 2008 11:03 AM
>     *Subject:* [vtkusers] Trying to use vtkSurfaceReconstructionFilter
>
>     Hi Dominik,
>
>     Thanks for answer but the name of my vtkSurfaceReconstructionFilter
>     instance (delaunay)might be misleading but I think thereisn't any
>     SetAlpha parameter for the vtkSurfaceReconstructionFilter
>
>     Cheers
>
>     I have been trying to feed an instance of
>     vtkSurfaceReconstructionFilter
>     with a vtkPolyData that has been assigned a vtkPoints. Here is the
>     following code.
>     The problem is that it always returns a CUBE not an approximation
>     even erroneous
>     of the point cloud.
>
>     Any ideas on this?
>
>     Cheers
>
>     vtkPoints *points = vtkPoints::New();
>        fp=fopen(argv[1],"r");
>        int counter  = 0;
>        while(!feof(fp)) { 
>                            fscanf(fp,"%e,%e,%e\n", &x,&y,&z);   //
>     Read an X,Y,Z points file                   
>                            points->InsertPoint(counter,x,y,z);
>                            counter++;
>       }
>       fclose(fp);
>      
>       points->Modified();
>       vtkPolyData *pData = vtkPolyData::New();
>       pData->SetPoints(points);
>       pData->Update();
>      
>       vtkSurfaceReconstructionFilter *delaunay =
>     vtkSurfaceReconstructionFilter::New();
>       delaunay->SetInput(pData);
>       delaunay->SetSampleSpacing(0.5);
>       delaunay->Update();
>
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-- 
Amy Squillacote                    Phone: (256) 726-4839
Computer Scientist                 Fax: (256) 726-4806
CFD Research Corporation           Web: http://www.cfdrc.com
215 Wynn Drive, Suite 501
Huntsville, AL  35805