[vtkusers] Volume Rendering problem

[Naoko Takaya]

Hello Lisa,
 
 I have set the data type to unsigned short by this,
 vtkScalars *scalars = vtkScalars::New();
 ......
 scalars->SetDataTypeToUnsignedShort();
 ........
 
 Naoko
 
> > -----Original Message-----
> > From: Lisa Sobierajski Avila [mailto:lisa.avila at kitware.com]
> > Sent: Friday, September 22, 2000 12:30 PM
> > To: Naoko Takaya; Vtk Vtk
> > Subject: Re: [vtkusers] Volume Rendering problem
> > 
> > 
> > Hello Naoko,
> > 
> > What type of scalars do you have? The ray caster can only 
> render unsigned 
> > char and unsigned short data.
> > 
> > Lisa
> > 
> > 
> > At 11:18 PM 9/21/2000, Naoko Takaya wrote:
> > >To all vtkusers,
> > >
> > >Howdy!!
> > >
> > >I have a pblm with Volume Rendering.
> > >I use ;
> > >
> > >vtkSrutcturedPoints
> > >vtkPiecewiseFunction
> > >vtkVolumeProperty
> > >vtkVolumeRayCastCompositeFunction
> > >vtkVolumeRayMapper
> > >vtkVolume
> > >
> > >When I see the result, it looks OK, but when turning it around
> > >and having a closer look, the shape changes every time
> > >I rotate. Why is this?
> > >Some kind of planes and lines appear and not the solid shape.
> > >
> > >Also, I don't exactly understand what "AddSegment" ( member of
> > >vtkPiecewiseFuntion ) does to the shape.
> > >I read the manual and said that it adds line segment to the
> > >function and removes the points between the specified points.
> > >But why use this when setting the color and opacity to the volume?
> > >
> > >This might be a simple question but I hope you would help me.
> > >Any help would very much be appreciated!!
> > >
> > >Thank you in advance!!
> > >
> > >PS
> > >    Just in case, I attached my pgm with.
> > >
> > >********************************************************
> > >*                Naoko Takaya                               *
> > >*                                                                    *
> > >*       e-mail: takaya at cv.cs.ritsumei.ac.jp         *
> > >*                                                                    *
> > >*********************************************************
> > 
> >