Hello
I am creating a 3D viewer to display large point cloud, I want to add octree structure to my viewer. This octree must allow me :
To display the number of level I want
To find the closest neighbour point
Is there a vtk class that allows me to have this both functionnality in a single octree structure (according to what I found vtk octree is used to find closest neighbour) or should I use potree library ( or create my own octree algorithm and data structure) ?
@mwestphal with vtkStaticPointLocator you can locate a point but I also want to choose de LOD to render to optimize performance and according to the documentation this class does not have such a functionnality or maybe I don’t look at the doc correctly
@mwestphal do you know what kind of filter ? Could I use the same octree with this filter that I create with vtkStaticPointLocator? I am starting to use vtk, it’s not easy to see the power of filters
Paraview uses vtkBinnedDecimation as filter to display LOD ? Because Paraview octrees seem to be very efficient. I should maybe go deeper inside the paraview source code to see how octrees are managed
Yes I’ve already seen this example, it displays an octree representation according to the choosen level but you can’t display the corresponding point. I am running through the vtk documentation and examples and honestly for now I’m not totally convinced that using the vtk classes allows me to generate a real octree structure for displaying and finding points.