Definition: <m>sum{}{}{f®}</m>
f(x) is analytical convolution for a triangle with Cauchy kernel [McCormack and Sherstyuk 1998]
Call: hfConvMesh(x,vect,tri,S,T);
Parameters:
x - point coordinates
vect - coordinate array for vertices
tri - index array of vertices for triangles (3 elements each)
S - array of kernel width control parameters for each triangle
T - threshold
Test file: convmesh.hf