Method LoadBuffer

IO/Geometry/vtkGLTFDocumentLoaderInternals.cxx:18–61

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//------------------------------------------------------------------------------
VTK_ABI_NAMESPACE_BEGIN
bool vtkGLTFDocumentLoaderInternals::LoadBuffer(
  const nlohmann::json& root, std::vector<char>& buffer)
{
  if (root.empty() || !root.is_object())
  {
    vtkErrorWithObjectMacro(this->Self, "Invalid buffer value");
    return false;
  }

  auto rootUriIt = root.find("uri");
  if (rootUriIt == root.end())
  {
    return true;
  }

  if (!this->Self->GetInternalModel()->URILoader)
  {
    vtkErrorWithObjectMacro(this->Self, "Trying to load data using URI without an URI loader");
    return false;
  }

  int byteLength = 0;
  if (!vtkGLTFUtils::GetIntValue(root, "byteLength", byteLength))
  {
    std::string name;
    vtkGLTFUtils::GetStringValue(root, "name", name);
    vtkErrorWithObjectMacro(this->Self, "Invalid buffer.byteLength value for buffer " << name);
    return false;
  }

  // Load buffer data
  std::string uri = rootUriIt.value();
  if (!vtkGLTFUtils::GetBinaryBufferFromUri(
        uri, this->Self->GetInternalModel()->URILoader, buffer, byteLength))
  {
    std::string name;
    vtkGLTFUtils::GetStringValue(root, "name", name);
    vtkErrorWithObjectMacro(this->Self, "Invalid buffer.uri value for buffer " << name);
    return false;
  }

  return true;
}

//------------------------------------------------------------------------------
bool vtkGLTFDocumentLoaderInternals::LoadBuffers(bool firstBufferIsGLB)