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Re: VTK + IDL [message #40932 is a reply to message #40731]

Tue, 07 September 2004 19:17

chun.42
Messages: 5
Registered: August 2004

Junior Member

"Karl Schultz" <kschultz_no_spam@rsinc.com> wrote in message >
> You can also mix in isosurfaces with the volume rendering to make the
> layered objects. See the ZBUFFER property on IDLgrVolume.
>
> So, yes, you should be able to do something like the kitware picture.
>

Thanks Karl for the tips. But I still need to ask about the layered
objects.
I has been trying to generate isosurfaces of skin and bone. It looks
fine as I draw them separately, but the semi-transparent skin doesn't
cover the bone completely as I put them togeter. I know I didn't catch
the proper isovalue(0~232) for bone/skin with 'head' data set. But I
tried the following code with the different data sets where I know the
exact isovalue for skin and bone. The result is the same. Some
portion of a bone-face is covered by the skin, and the others(ex: the
bone around eyes) are not. Do I miss something? Is there any
alternative way?

image = [[[red]],[[green]],[[blue]],[[alpha]]]
oImage = OBJ_NEW('IDLgrImage', image,
INTERLEAVE=2,Blend_function=[3,4])

isovalue = 120
Isosurface, volumeData, isovalue, vertex, connect
oPolyBone = Obj_new('IDLgrPolygon',Data=vertex,Polygons = connect,$
Shading=1,Style=2, Color=[230,230,230],/Reject,/Zero_opacity_skip)

isovalue1 = 40;
Isosurface, volumeData, isovalue1, vertex1, connect1

oPolySkin = Obj_new('IDLgrPolygon',Data=vertex1,Polygons = connect1,$
Color=[255,255,255],Shading=1,Style=2,texture_map = oImage)
;
;
oModel ->Add, oPolyBone
oModel ->Add, oPolySkin

Thanks

HC

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[Message index]

		VTK + IDL By: chun.42 on Tue, 24 August 2004 18:37
		Re: VTK + IDL By: Karl Schultz on Mon, 30 August 2004 09:07
		Re: VTK + IDL By: chun.42 on Tue, 07 September 2004 19:17
		Re: VTK + IDL By: andrew.cool on Sun, 29 August 2004 16:07
		Re: VTK + IDL By: chun.42 on Wed, 25 August 2004 18:47
		Re: VTK + IDL By: Karl Schultz on Wed, 08 September 2004 14:16

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