[vtkusers] Rending texture problem

[quengzi]

Thank you Bill!
Is there any tools can convert 3DMax *.max or *.3ds file to *.vtk? We have a
lot of 3ds file, but I want to use VTK to show it in a touch screen. It's
very interesting program, but vtk3DSImporter cannot load texture, and lost
some informations of this format.

Thanks,
Yun

2010/9/26 Bill Lorensen <bill.lorensen at gmail.com>

> The 3DSImporter only reads geometry and colors. If does not read the
> texture(which I think is stored in an .mli file) nor the texture
> coordinates (which I think are called mapping coordinates).
>
> On Sun, Sep 26, 2010 at 12:20 AM, quengzi <quengzi at gmail.com> wrote:
> > I have read the source code of vtk3DSImpoter and vtkOBJReader,
> vtk3DSImpoter
> > implement below functions which related the metadata:
> > ImportProperties // just walk the list of material properties, creating
> vtk
> > properties
> > ImportLights
> > ImportCameras
> > ImportActors
> > And there is a function named "parse_mdata":
> > if (chunk.end <= mainchunk->end)
> >       {
> >       switch (chunk.tag)
> >         {
> >         case 0x2100: parse_colour (importer, &global_amb);
> >           break;
> >         case 0x1200: parse_colour (importer, &bgnd_colour);
> >           break;
> >         case 0x2200: parse_fog (importer, &chunk);
> >           break;
> >         case 0x2210: parse_fog_bgnd(importer); //It's a empty function,
> not
> > implement yet
> >           break;
> >         case 0xAFFF: parse_mat_entry (importer, &chunk);
> >           break;
> >         case 0x4000: parse_named_object (importer, &chunk);
> >           break;
> >         }
> >       }
> > the vtkOBJReader in the IO folder, but the vtk3DSImporter be put into
> Hybird
> > folder.
> >
> >
> > 2010/9/26 quengzi <quengzi at gmail.com>
> >>
> >> Thank you Eric very much!
> >> Your advise is very important for me, I have searched the old mailing
> >> list, but most of the problem about 3DSImpoter is no result. I think you
> are
> >> right, the designer need send me another file format.
> >>
> >> Yun
> >>
> >> 2010/9/26 Eric E. Monson <emonson at cs.duke.edu>
> >>>
> >>> Hey Yun,
> >>>
> >>> I've never used the vtk3DSImporter (or dotnet), but I would guess that
> if
> >>> the importer has problems with textures, then probably it's not just
> losing
> >>> the textures, but it's also not importing the texture coordinates. So,
> when
> >>> you try to apply a texture manually there is nothing to tell the system
> >>> where to put the texture.
> >>>
> >>> I have a feeling, looking back on old mailing list postings, that the
> >>> 3DSImporter really just grabs the most basic geometry, and computes
> Normals,
> >>> but it's not designed to pull in anything more than the polygons. I'm
> sure
> >>> this will disappoint you, but maybe there's a chance someone else has
> >>> another solution for converting your file into another format...?
> >>>
> >>> Good luck,
> >>> -Eric
> >>>
> >>> ------------------------------------------------------
> >>> Eric E Monson
> >>> Duke Visualization Technology Group
> >>>
> >>>
> >>> On Sep 25, 2010, at 11:22 AM, quengzi wrote:
> >>>
> >>> > Hi all,
> >>> >
> >>> > I'm a newer of VTK, I use VTK Dotnet to open a 3ds file, someone tell
> >>> > me that vtk3DSImpoter do not support texture, so I want to draw it by
> >>> > manual, but it failed, I cannot see any different after add the
> texture by
> >>> > manual, below is my code:
> >>> >             string fileName = @"E:\VTK\3D Module\Mickey\Mickey.3ds";
> >>> >             vtk3DSImporter importer = new vtk3DSImporter();
> >>> >             importer.ComputeNormalsOn();
> >>> >             importer.SetFileName(fileName);
> >>> >             importer.Read();
> >>> >             importer.GetRenderer().ResetCamera();
> >>> >             importer.DebugOn();
> >>> >
> >>> >             //Add or Remove this section, no differents
> >>> >             vtkPNGReader pngReader = new vtkPNGReader();
> >>> >             pngReader.SetDebug(1);
> >>> >             pngReader.SetFileName(@"E:\VTK\3D Module\Mickey\l.png");
> >>> >             vtkTexture texture = new vtkTexture();
> >>> >             texture.SetInput(pngReader.GetOutput());
> >>> >             texture.InterpolateOn();
> >>> >             vtkActor actor = new vtkActor();
> >>> >             actor.SetTexture(texture);
> >>> >             importer.GetRenderer().AddActor(actor);
> >>> >
> >>> >             //Below is add a light, and it's okay
> >>> >             vtkLight light = new vtkLight();
> >>> >             light.SetColor(1,1 , 1);
> >>> >             light.SwitchOn();
> >>> >             light.SetIntensity(0.9);
> >>> >             light.SetAmbientColor(1, 1, 1);
> >>> >
> >>> >
> light.SetPosition(importer.GetRenderer().GetActiveCamera().GetPosition());
> >>> >
> >>> >
> light.SetFocalPoint(importer.GetRenderer().GetActiveCamera().GetFocalPoint());
> >>> >
> >>> >             importer.GetRenderer().SetBackground(0.1,0.2,0.4);
> >>> >             importer.GetRenderer().AddLight(light);
> >>> >
> >>> >             renderer[0] = importer.GetRenderer();
> >>> >             AddRendererToRenderWindow(renWin);
> >>> > ...
> >>> > Any suggestions will be appropriated.
> >>> >
> >>> > Thanks,
> >>> > Yun
> >>> > _______________________________________________
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> >>
> >
> >
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