[vtkusers] Volume Rendering problem

[Lisa Sobierajski Avila]

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         *
>*                                                                    *
>*********************************************************