renderSH_helper.m

% Copyright ©2013. The Regents of the University of California (Regents).
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% Created by Jonathan T Barron and Jitendra Malik, Electrical Engineering
% and Computer Science, University of California, Berkeley.
%
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function [E, dS_dN, dS_dL] = renderSH_helper(N, L)

try
  
  if nargout >= 3
    [E, dS_dN, dS_dL] = renderSH_helper_mex(N, L);
  elseif nargout >= 2
    [E, dS_dN] = renderSH_helper_mex(N, L);
  else
    [E] = renderSH_helper_mex(N, L);
  end
  
catch ME
  fprintf('ERR in renderSH_helper: %s\n', ME.message);
  
  if nargout >= 3
    [E, dS_dN, dS_dL] = renderSH_helper_mat(N, L);
  elseif nargout >= 2
    [E, dS_dN] = renderSH_helper_mat(N, L);
  else
    [E] = renderSH_helper_mat(N, L);
  end
  
end