From: Pei Chen (pchen++at++mail.eecis.udel.edu)
Date: 10/05/2004 21:26:48
Hey, Zorana and Paolo,
I had read through the pfdGeoBuilder and all documentation too, just
couldn't find out what Performer has done to the .iv mesh data. Dose
anybody has the answer to this problem? Thanks in advance!
Raymond
On Wed, 6 Oct 2004, Zorana Mayooran wrote:
> Hi Paolo,
>
> I am using the pfflt loader and have the same problem as Raymond in that
> I need to work with PFGS_TRIS but can't because performer loads my model
> as PFGS_TRISTRIPS. I had a look through all the documentation available
> (including the pfflt loader and pfdGeoBuilder) but couldn't find how I
> can tell performer to load my model as PFGS_TRIS and not PFGS_TRISTRIPS.
> Do you have any ideas on how this can be done?
>
> Thanks.
>
> Regards,
> Zorana.
>
>
> Paolo Farinelli wrote:
>
> > Hello Raymond,
> >
> > the source code for the .iv loader is shipped with Performer and
> > can be found in /usr/share/Performer/src/lib/libpfdb/libpfiv.
> > (or %PFROOT%\Src\lib\libpfdb\libpfiv on Win32).
> >
> > You may also need to look into the source for libpfdu as I believe
> > the iv loader uses the pfdGeoBuilder API to create its geometry.
> >
> > Hope this helps.
> > Regards,
> > Paolo
> >
> >
> > Pei Chen wrote:
> >
> >> Hey, everybody,
> >> I have some questions regarding to pfGeoSet and loading a *.iv file
> >> into a
> >> pfGeoSet here.
> >>
> >> I have an Inventor file (*.iv) which specifies an indexed triangle
> >> mesh. I
> >> use pfdLoadFile() to load the mesh data into the performer. later in my
> >> project, I need to access individual vertex using the corresponding
> >> index.
> >> It seems that, however, Performer dose some optimization to the mesh
> >> data
> >> such and the indics of the mesh vertics are different than those
> >> specified
> >> in the .iv file.
> >> For example, in the .iv file, it says a triangle face is formed by
> >> vertics
> >> 0,1,2, but after I load it into the pfGeoSet object, the Performer says
> >> the
> >> same triangle face is formed by vetics 4, 5, 6.
> >>
> >> There is another problem with the pfGeoSet. It seems Performer also
> >> changes
> >> the number of vertics when it loads in the mesh data from .iv file. For
> >> instance, in the .iv file, 8 vertics are specified. But when i load it
> >> into
> >> the pfGeoSet, it splits some vertics and the number of vertics
> >> changes to
> >> 18.
> >>
> >> The last problem is the primitive type. I really want the Performer
> >> treat
> >> my
> >> mesh data as PFGS_TRIS type, that is triangle mesh, but when i use
> >> pfdLoadFile() to load in the mesh data, Performer always treats my mesh
> >> data
> >> as PFGS_FLAT_TRISTRIPS, that is flat triangle strip mesh. Is there
> >> any way
> >> to tell Performer that I want PFGS_TRIS intead of PFGS_FLAT_TRISTRIPS.
> >> I tried the pfGeoSet->setPrimType(), but it dosen't work.
> >>
> >> So, what I want to know is what exactly happen when I load in a .iv mesh
> >> data using pfdLoadFile().
> >>
> >> Thanks.
> >>
> >> Raymond
> >>
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> >>
> >>
> >>
> >>
> >
> >
>
>
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