[vtkusers] Re: vtkusers digest, Vol 1 #1024 - 6 msgs
Chuan-Chu Kuo \(郭川竹\)
d8843006 at ccunix.ccu.edu.tw
Mon May 20 08:26:40 EDT 2002
收到，謝謝。
川竹
----- Original Message -----
From: <vtkusers-request at public.kitware.com>
To: <vtkusers at public.kitware.com>
Sent: Monday, May 20, 2002 6:44 PM
Subject: vtkusers digest, Vol 1 #1024 - 6 msgs
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> Today's Topics:
>
> 1. problem with vtkScalarBarActor (=?iso-8859-1?q?Stephane=20Lemaire?=)
> 2. Re: comparing polydata objects.. (David Pont)
> 3. 3D Texture Mapping (Sedat DOGAN2)
> 4. Re: Overlay graphics problem? (Malcolm Drummond)
> 5. RE: VRML (Gopalakrishnan, Gowri)
> 6. MFC + VTK (Giancarlo Amati)
>
> --__--__--
>
> Message: 1
> Date: Sun, 19 May 2002 21:20:26 +0200 (CEST)
> From: =?iso-8859-1?q?Stephane=20Lemaire?= <stephanelemairefr at yahoo.fr>
> To: vtkusers at public.kitware.com
> Subject: [vtkusers] problem with vtkScalarBarActor
>
> Hello everyone,
>
> When I'm trying to display a scalar bar with
> vtkScalarBarActor, I'm able to get the bar but without
> any text.
>
> Any idea of what's going wrong ?
>
> Stephane.
>
> ___________________________________________________________
> Do You Yahoo!? -- Une adresse @yahoo.fr gratuite et en fran蓷is !
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> --__--__--
>
> Message: 2
> From: "David Pont" <david_pont at hotmail.com>
> To: krs at cs.uncc.edu, vtkusers at public.kitware.com
> Subject: Re: [vtkusers] comparing polydata objects..
> Date: Mon, 20 May 2002 09:31:46 +1200
>
> <html><div style='background-color:'><DIV>
> <P>Hi krs,</P>
> <P> I have a class that will let treat polydata (your isosurface?)
as an implicit function, so you could use it to clip or cut. You could
also use ImplicitBoolean to get union, intersection, difference etc
between the two surfaces. If you are interested I can send you the C++
source.</P>
> <P> regards</P>
> <P> Dave Pont<BR><BR></P></DIV>
> <DIV></DIV>
> <DIV></DIV>>From: "K.R.Subramanian" <KRS at CS.UNCC.EDU>
> <DIV></DIV>>To: VTK HELP <VTKUSERS at PUBLIC.KITWARE.COM>
> <DIV></DIV>>Subject: [vtkusers] comparing polydata objects..
> <DIV></DIV>>Date: Sat, 18 May 2002 12:25:55 -0400
> <DIV></DIV>>
> <DIV></DIV>>
> <DIV></DIV>>I am interesting in calculating the volume intercepted by
an isosurface with each cell
> <DIV></DIV>>it intersects in a grid. In other words, the isosurface is
like an implicit function
> <DIV></DIV>>(cutter).
> <DIV></DIV>>What is an efficient way to do this? My bigger problem is
to compare two different
> <DIV></DIV>>isosurfaces in terms of these fractional volumes compueted
at each of these grid cells.
> <DIV></DIV>>
> <DIV></DIV>>Thanks.
> <DIV></DIV>>
> <DIV></DIV>> -- krs
> <DIV></DIV>>
> <DIV></DIV>>--
> <DIV></DIV>>K.R.Subramanian Phone: (704) 687-4872
> <DIV></DIV>>Department of Computer Science FAX: (704) 687-4893
> <DIV></DIV>>UNC Charlotte, CARC 311 Email: krs at cs.uncc.edu
> <DIV></DIV>>Charlotte, NC 28223-0001 Web: http://www.cs.uncc.edu/~krs
> <DIV></DIV>>
> <DIV></DIV>>
> <DIV></DIV>>
> <DIV></DIV>>_______________________________________________
> <DIV></DIV>>This is the private VTK discussion list.
> <DIV></DIV>>Please keep messages on-topic. Check the FAQ at:
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> --__--__--
>
> Message: 3
> Reply-To: "Sedat DOGAN2" <d_sedat at hotmail.com>
> From: "Sedat DOGAN2" <d_sedat at hotmail.com>
> To: <vtkusers at public.kitware.com>
> Date: Mon, 20 May 2002 00:31:52 +0300
> Subject: [vtkusers] 3D Texture Mapping
>
> Dear friends,
> I want to render my polygonal data with 3D texture mapping. I know that
vtk
> doesn't support 3D texture mapping. And I don't have a 3D texture mapping
> hardware either. But for my studies, I should solve this problem. In order
> to solve this problem I think to do the following things. Please if you
> could tell me if my following thoughts solve this problem. I will do the
> followings:
> 1- I'll compute the 3D world coordinates of my textures.For this purpose
> I'll use real photograps taken with oriented cameras with photogrammetric
> methods.
> 2- After I have computed 3D coordinates of the textures, I'll assign these
> textures to the vertexes of my polygonal data according to the coordinates
> one by one with a C program fuction which I'll write.(In order to
quarentee
> one to one correspondence between vertexes and the textures, I'll make
> backward mapping. As in the resampling problems.).
> 3- In order to render polygonal data, I'll use the method "color with
> sclars" of the polydata.
>
> Now, I wonder that: Is the final rendered polydata seen as it was texture
> mapped? I.e. how is the final polydaya seen?
> I didn't try this. Because this implementation will take very long time.
And
> if this approach can't be succesfull, I will loose very much time. But
> I'don't have much time to solve this problem. So if you can give me ideas
> about my above thoughts, I'll be very happy.
>
> Thanks in advance.
> Best Regards.
> Sedat Dogan.
>
>
> --__--__--
>
> Message: 4
> From: "Malcolm Drummond" <malcolm at geovision.co.za>
> To: "vtkusers" <vtkusers at public.kitware.com>
> Subject: Re: [vtkusers] Overlay graphics problem?
> Date: Sun, 19 May 2002 23:58:11 +0200
> Organization: GeoVision
>
> Confirmed
>
> My laptop has an ATI Rage Pro and exhibits the same prb. I tried
> drawMesh.tcl in the imaging library. When camera is looking directly down
> over the pole, the overlay disappears. It reappears if I zoom in a bit.
> Seems as if it's getting confused about depth.
>
> Malcolm Drummond
> GeoVision cc
>
> ----- Original Message -----
> From: Pan, Tony C (Research) <tpan at crd.ge.com>
> To: vtk mailing list <vtkusers at public.kitware.com>
> Sent: Friday, May 17, 2002 7:42 PM
> Subject: [vtkusers] Overlay graphics problem?
>
>
> > Hi,
> > I have a tcl application that displays an image, and has mouse
interaction
> to allow user to draw a
> > region of interest on top of the image. I am using a polydata to
contain
> a square for this purpose,
> > and the square is added to the renderer as an Actor2D. This is a VTK
4.0
> application.
> >
> > My problem is that with my desktop, which has an ATI Rage Pro integrated
> graphics chip, the box does
> > not render. TextActors and the image do render okay. I suspect this is
> related to the graphics
> > hardware, since a test on ATI fireGL worked fine. Can someone please
> confirm this, and/or offer
> > potential workarounds?
> >
> > Thank you.
> >
> > Tony Pan
> > _______________________________________________
> > This is the private VTK discussion list.
> > Please keep messages on-topic. Check the FAQ at:
> <http://public.kitware.com/cgi-bin/vtkfaq>
> > Follow this link to subscribe/unsubscribe:
> > http://public.kitware.com/mailman/listinfo/vtkusers
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> >
>
>
> --__--__--
>
> Message: 5
> From: "Gopalakrishnan, Gowri" <Gowri.Gopalakrishnan at inteq.com>
> To: "'Tom Citriniti'" <citrit at rpi.edu>,
> alexandre gouaillard <alexandre.gouaillard at insa-lyon.fr>,
> vtkusers at public.kitware.com
> Subject: RE: [vtkusers] VRML
> Date: Mon, 20 May 2002 03:10:22 -0500
>
> I have been posting now and then about it and I have not checked if vtk4.0
> has this feature. Even though vtk has a VRMLimport export feature, very
> often when you export/import not all the features are correct. For example
> Exporting vtk to vrml all the colors don't appear. The same was the issue
> with 3ds import.....Sometimes wireframes appear as solid etc...
>
> I would like to know if any of these features have been improved in
vtk4.0?.
> Or is there any place to enter this as a bug report?.
>
> Regards
> Gowri
>
>
> --__--__--
>
> Message: 6
> Date: Mon, 20 May 2002 10:37:55 +0200 (CEST)
> From: Giancarlo Amati <amati at ira.cnr.it>
> To: vtkusers at public.kitware.com
> Subject: [vtkusers] MFC + VTK
>
> Hello everybody,
>
> where can I find a tutorial relative the use of MFV with VTK?
>
> Thank you for the help.
>
> Best Regards
> Giancarlo
>
> --
> ----------------------------------------
> dott. Giancarlo Amati |
> (amati at ira.cnr.it) |
> |
> National Research Council |
> RadioAstronomical Institute |
> office phone n. +39 051 6399405 |
> via Gobetti 101 - Bologna (Italy) |
> ----------------------------------------
>
>
>
> --__--__--
>
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