onauparc

//in opencv/modules/viz/include/opencv2/viz/types.hpp
static Mesh load(InputArray pointCloud);

//in opencv/modules/viz/src/types.cpp
cv::viz::Mesh cv::viz::Mesh::load((InputArray pointCloud){
 
  vtkSmartPointer<vtkCloudMatSource> cloud_source = vtkSmartPointer<vtkCloudMatSource>::New();
  cloud_source->SetCloud(pointCloud);
  cloud_source->Update();
  vtkSmartPointer<vtkPolyData> polydata = cloud_source->GetOutput();