Method LoadModelData

IO/Geometry/vtkGLTFDocumentLoader.cxx:1006–1055

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//------------------------------------------------------------------------------
bool vtkGLTFDocumentLoader::LoadModelData(const std::vector<char>& glbBuffer)
{
  vtkGLTFDocumentLoaderInternals impl;
  impl.Self = this;

  if (this->InternalModel == nullptr)
  {
    vtkErrorMacro("Error loading model data: metadata was not loaded");
    return false;
  }

  // Push optional glB buffer
  if (!glbBuffer.empty())
  {
    this->InternalModel->Buffers.push_back(glbBuffer);
  }

  if (!impl.LoadBuffers(!glbBuffer.empty()))
  {
    return false;
  }

  this->PrepareData();

  // Read primitive attributes from buffers
  size_t numberOfMeshes = this->InternalModel->Meshes.size();
  size_t numberOfImages = this->InternalModel->Images.size();
  for (size_t i = 0; i < numberOfMeshes; i++)
  {
    for (Primitive& primitive : this->InternalModel->Meshes[i].Primitives)
    {
      if (!this->ExtractPrimitiveAccessorData(primitive))
      {
        return false;
      }
    }
    double progress = (i + 1) / static_cast<double>(numberOfMeshes + numberOfImages);
    this->InvokeEvent(vtkCommand::ProgressEvent, static_cast<void*>(&progress));
  }
  // Read additional buffer data
  if (!this->LoadAnimationData())
  {
    return false;
  }
  if (!this->LoadImageData())
  {
    return false;
  }
  return this->LoadSkinMatrixData();
}

/** vtk object building and animation operations **/
//------------------------------------------------------------------------------