[vtkusers] doubts about vtkVRMLImporter

[Sebastien Jourdain]

It might be some limitation of the importer itself.


On Thu, Dec 20, 2012 at 2:28 PM, Fabiano Stange <fpaulico1 at gmail.com> wrote:

> Hi!
> I have some doubts about vtkVRMLImporter.
> I am using VTK version 5.4 and Visual Studio C++ 2008 to import a wrl file.
> But it is not working very well.
> If the wrl file has more then one DEF node, vtk only visualizes the first
> DEF node.
>
> For example, a solid model like a building can be writing in wrl format
> using a DEF node for which object (foundations, columns, beams, slabs,
> walls and roofs).
> Here is a part of the wrl file i like to visualize in vtk:
>
> #VRML V2.0 utf8
>
> DEF Structural_Columns_<M_Concrete_Square_Column_:_500_x_500mm> Transform {
>  translation -10700 4650 -17490
> children DEF Structural_Columns_<M_Concrete_Square_Column_:_500_x_500mm>_0
> Transform {
>  translation 0 0 0
> children Shape {
> appearance Appearance {
>  material Material {diffuseColor 1 0 1}
> texture ImageTexture {
> url "
> http://t3.gstatic.com/images?q=tbn:ANd9GcSNUBcHJyaWrODD9_EyOSBRAvBB_3dRhTlocB1S6qEk5Mz3XW9x2w
> "
>  repeatS TRUE
> repeatT TRUE
> }
> }
>  geometry DEF
> Structural_Columns_<M_Concrete_Square_Column_:_500_x_500mm>_0-FACES
> IndexedFaceSet {
> ccw TRUE
>  solid TRUE
> coord DEF
> Structural_Columns_<M_Concrete_Square_Column_:_500_x_500mm>_0-COORD
> Coordinate {point [...]}
>  coordIndex [ ... ]
> }
> }
> }
> }
>
> DEF Structural_Columns_<M_Concrete_Square_Column_:_500_x_500mm>_01
> Transform {
> translation -5204 7750 -17490
> children DEF
> Structural_Columns_<M_Concrete_Square_Column_:_500_x_500mm>_02 Transform {
>  translation 0 0 0
> children Shape {
> appearance Appearance {material Material {diffuseColor 1 0 1}}
>  geometry DEF
> Structural_Columns_<M_Concrete_Square_Column_:_500_x_500mm>_02-FACES
> IndexedFaceSet {
> ccw TRUE
>  solid TRUE
> coord DEF
> Structural_Columns_<M_Concrete_Square_Column_:_500_x_500mm>_02-COORD
> Coordinate {point [...}
>  coordIndex [...]
> }
> }
> }
> }
> ...
>
> Even if i use the group node vtk still visualizes the first DEF node.
> And there is more problems.
> The first DEF node that vtk visualizes does not read the Appearance node,
> the Material node and the Color node.
>
> I am using the example in http://www.vtk.org/Wiki/VTK/Examples/Cxx/IO/VRML
> .
> Is something wrong or the vtkVRMLImporter works like that?
>
> Thanks,
> Fabiano Stange
>
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