Add script to generate a logo based on the MATLAB logo, but with triangulation...

Add script to generate a logo based on the MATLAB logo, but with triangulation instead of regularly gridded data.

doc/convert_logo.sh

+#!/usr/bin/env bash
+
+gs -sDEVICE=pngalpha -r300 -dBATCH -dNOPAUSE -q -sOutputFile=%stdout fvcom-toolbox.pdf | \
+    convert -trim -transparent white -background transparent -trim - fvcom-toolbox.png
+rm fvcom-toolbox.pdf

utilities/make_logo.m

+% Make the toolbox logo. Adapted from:
+%   mathworks.com/help/matlab/examples/creating-the-matlab-logo.html
+%
+% Note: this will not produce the same figure each time as there's a call
+% to rand in the script.
+%
+% Author(s):
+%   Pierre Cazenave (Plymouth Marine Laboratory).
+% 
+% ChangeLog:
+%   2016-06-02 First version.
+
+ftbverbose = 1;
+
+[base, subname] = fileparts(mfilename('fullpath'));
+cd(base)
+
+global ftbverbose
+if ftbverbose
+    fprintf('\nbegin : %s\n', subname)
+end
+
+% Make an initial membrane and then triangulate it and plot that.
+
+n = 5; % size of the membrane
+L = 160 * membrane(1, n);
+[X, Y] = meshgrid(1:n*2 + 1, 1:n*2 + 1);
+
+% Interpolate onto an irregular grid.
+XX = X .* (0.95 + mod(abs(rand(size(X))), 0.05));
+YY = Y .* (0.95 + mod(abs(rand(size(Y))), 0.05));
+Z = griddata(X, Y, L, XX, YY);
+
+tri = delaunayTriangulation(XX(:), YY(:));
+
+% Do the plot replicating (as closely as possible) the MATLAB logo.
+close all
+
+f = figure;
+ax = axes;
+s = trisurf(tri.ConnectivityList, XX(:), YY(:), Z(:));
+s.EdgeColor = 'none';
+view(3)
+ax.XLim = [1 max(X(:))];
+ax.YLim = [1 max(Y(:))];
+ax.ZLim = [min(Z(:)), max(Z(:))];
+ax.CameraUpVector = [0 0 1];
+ax.CameraViewAngle = 8;
+ax.Position = [0 0 1 1];
+ax.DataAspectRatio = [1 1 20];
+l1 = light;
+l1.Position = [160 400 80];
+l1.Style = 'local';
+l2 = light;
+l2.Position = [.5 -1 .4];
+l2.Color = [0.8 0.8 0];
+caxis([min(Z(:)), max(Z(:))])
+s.FaceLighting = 'gouraud';
+s.AmbientStrength = 0.3;
+s.DiffuseStrength = 0.9;
+s.BackFaceLighting = 'lit';
+s.SpecularStrength = 1;
+s.SpecularColorReflectance = 1;
+s.SpecularExponent = 7;
+axis off
+colormap(hot)
+
+% Transparent background and save to PDF.
+set(gca,'color','none') 
+print(gcf, '-dpdf', '../doc/fvcom-toolbox.pdf', '-painters')
+
+if ftbverbose
+    fprintf('end   : %s \n', subname)
+end