how to spread neighbors of a vertex and neighbors of its neighbors based on a criteria Dv ?

Hello, I am working on a spreading method to spread neighbors of a vertex based on some criteria. I have :

• a 3D mesh model and a 3D mesh scene,
• an array IVS of scene vertices that I have already obtained from a matching procedure.
• an array mindist each element i is the minimum distance between the ith vertex on the the scene and its nearest neighbor on the model stocked in an other array matchs.(I used Knnsearch)
• the liste of neighbors of each vertex neighboursOfInternal. (I used this code to get them).

so what I want to do is:

 for each vertex in IVS 

     if the distance between this vertex and its nearest neighbor (mindist(vertex)) is less than 
     a threshold Dv
             add all its neighbors from neighboursOfInternal to IVS
     repeat this procedure fro all vertices in IVS (vertices and neighbors added).

I tried to code it like this:

neighboursOfInternal = neighboringVertices(vertexS);
tab = IVS;
for i = 1 : length(tab)
  disp(i);
      if (mindist(IVS(i)) < 2)
          tab = [tab  cell2mat(neighboursOfInternal(IVS(i)))'];
      end
end

with neighboringVertices is a function that returns for each vertex in vertexS all its neighbors connected to it by edges.

the problem I have is that it spreads neignbors just for the vertices in the original array tab (IVS), but the neighbours of neignbors that i added are not taking into acount.

I hope I was clear. I need your help.

[jiji hr]

I found the solution, I simply had to do it with while loop rather than for, and also to take into account the duplicated vertices while adding neighbors.

[Mohsin Shah]

Hello Jihad. Can your code do the job of finding the neighbors of a vertex of a 3D mesh? I need a code which can find the neighbors of all the vertices given the face (connectivity) information. I also need to find the neighbors of neighbors.