Method ReadTextureFile

IO/Geometry/vtkBYUReader.cxx:357–403

}

void vtkBYUReader::ReadTextureFile(int numPts, vtkInformation* outInfo)
{
  FILE* textureFp;
  int i;
  float t[2];
  vtkFloatArray* newTCoords;
  vtkPolyData* output = vtkPolyData::SafeDownCast(outInfo->Get(vtkDataObject::DATA_OBJECT()));

  if (this->ReadTexture && this->TextureFileName)
  {
    if (!(textureFp = vtksys::SystemTools::Fopen(this->TextureFileName, "r")))
    {
      vtkErrorMacro(<< "Couldn't open texture file");
      return;
    }
  }
  else
  {
    return;
  }
  //
  // Allocate and read data
  //
  newTCoords = vtkFloatArray::New();
  newTCoords->SetNumberOfComponents(3);
  newTCoords->SetNumberOfTuples(numPts);

  for (i = 0; i < numPts; i++)
  {
    auto resultTCoord = vtk::scan<float, float>(textureFp, "{:e} {:e}");
    if (!resultTCoord)
    {
      vtkErrorMacro(<< "Error reading texture file: " << this->TextureFileName
                    << "Message: " << resultTCoord.error().msg());
      fclose(textureFp);
      return;
    }
    std::tie(t[0], t[1]) = resultTCoord->values();
    newTCoords->SetTypedTuple(i, t);
  }

  fclose(textureFp);
  vtkDebugMacro(<< "Read " << numPts << " texture coordinates");

  output->GetPointData()->SetTCoords(newTCoords);
  newTCoords->Delete();
}

//------------------------------------------------------------------------------
// This source does not know how to generate pieces yet.