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- function ksi = spm_mesh_euler(M)
- % Compute the Euler characteristic of a triangle mesh
- % M - patch structure
- %
- % ksi - Euler characteristic
- %__________________________________________________________________________
- %
- % The Euler characteristic is defined according to the formula:
- % \ksi = V - E + F
- % See https://www.wikipedia.org/wiki/Euler_characteristic
- %__________________________________________________________________________
- % Copyright (C) 2018 Wellcome Trust Centre for Neuroimaging
- % Guillaume Flandin
- % $Id: spm_mesh_euler.m 7397 2018-08-15 11:04:26Z guillaume $
- ksi = size(M.vertices,1) - size(spm_mesh_edges(M),1) + size(M.faces,1);
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