This program includes reading different formats of 3D data, removing duplicate vertices, computing the histogram for a 3D model and writes the resulting file in the VRML V2.0 format.

Compile and run "MeshHistogram/histogram/OpenGLTestOnMFC.sln".
"LoadMesh": Load mesh by ".obj", ".off", ".ply" .etc
"AddNoise": Add random Gaussian noise to mesh vertices.
"RemoveDV": Removes all duplicate vertices (or distance between two vertices within the close-up range).
"Normalize": Normalize the model inside the unit cube.
"MeshHistogram": Normalize the model first, then, randomly select 1000 pairs of vertices,compute a histogram of the distances between them and print the histogram in the window. Invisible it by push this button again. "VRMLEport": Writes the resulting file in the VRML V2.0 format.

The relevant functions can be found in MeshOperation.cpp.

P.S. In removing duplicate vertices, both two method are wroking: use the function delete_vertex() in OpenMesh and create a new mesh and replace the current editing mesh to remove duplicate vertices.