update user manual

docs/matGeom-manual/images/meshes3d/distancePointMesh/demo_distancePointMesh_dodecahedron.m

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+%DEMO_DISTANCEPOINTMESH_DODECAHEDRON  One-line description here, please.
+%
+%   output = demo_distancePointMesh_dodecahedron(input)
+%
+%   Example
+%   demo_distancePointMesh_dodecahedron
+%
+%   See also
+%
+
+% ------
+% Author: David Legland
+% e-mail: [email protected]
+% INRAE - BIA Research Unit - BIBS Platform (Nantes)
+% Created: 2023-12-20,    using Matlab 23.2.0.2409890 (R2023b) Update 3
+% Copyright 2023 INRAE.
+
+mesh = createDodecahedron;
+mesh.vertices = mesh.vertices * 30 + 50;
+
+hf1 = figure; hold on; axis equal; axis([0 100 0 100 0 100]); view(3);
+drawMesh(mesh, 'faceAlpha', 0.5, 'faceColor', [.5 .5 .5]);
+print(gcf, 'distancePointMesh_dodecahedron_init.png', '-dpng');
+
+[x, y] = meshgrid(1:100, 1:100);
+z = ones(size(x)) * 50;
+
+pts = [x(:) y(:) z(:)];
+distMap = reshape(distancePointMesh(pts, mesh), size(x));
+figure; imshow(distMap, [0 max(distMap(:))]); colormap('parula');
+
+figure(hf1);
+surf(x, y, z, distMap, 'linestyle', 'none');
+print(gcf, 'distancePointMesh_dodecahedron_view3d.png', '-dpng');
+

docs/matGeom-manual/images/polygons2d/polygonSignature/demo_polygonSignature_rectangle.m

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+%DEMO_POLYGONSIGNATURE_RECTANGLE  One-line description here, please.
+%
+%   output = demo_polygonSignature_rectangle(input)
+%
+%   Example
+%   demo_polygonSignature_rectangle
+%
+%   See also
+%
+
+% ------
+% Author: David Legland
+% e-mail: [email protected]
+% INRAE - BIA Research Unit - BIBS Platform (Nantes)
+% Created: 2023-12-20,    using Matlab 23.2.0.2409890 (R2023b) Update 3
+% Copyright 2023 INRAE.
+
+
+%% Input data
+
+rect = [20 30  60 40];
+poly = rectToPolygon(rect);
+refPoint = [50 50];
+
+figure; hold on; axis equal; axis([0 100 0 100]);
+drawPolygon(poly, 'k');
+drawPoint(refPoint, 'bo');
+
+print(gcf, 'polygonSignature_rectangle_init.png', '-dpng');
+
+%% compute signature
+
+angles = 0:360;
+signature = polygonSignature(poly, angles, refPoint);
+
+figure; set(gca, 'fontsize', 14);
+plot(angles, signature);
+xlim(angles([1 end]));
+set(gca, 'XTick', 0:45:360);
+ylim([0 40]);
+xlabel('Ray angle');
+ylabel('Distance to reference point');
+title('Polygon signature of rectangle')
+
+print(gcf, 'polygonSignature_rectangle_signature.png', '-dpng');