drawVoronoi

Contents

Initialisations
compute diagram
Draw Result

%drawVoronoi : dessine une tesselation de Voronoi typique
%
%
%   ---------
%
%   author : David Legland
%   INRA - TPV URPOI - BIA IMASTE
%   created the 15/08/2005.

Initialisations

% size of window
window = [0 100 0 100];

% guard area
bounds = window + [-20 20 -20 20];

% points density
lambda = .005;

compute diagram

% number of points
Np = round((bounds(2)-bounds(1))*(bounds(4)-bounds(3)) * lambda);

% points coordinate
x = rand(Np, 1)*(bounds(2)-bounds(1)) + bounds(1);
y = rand(Np, 1)*(bounds(4)-bounds(3)) + bounds(3);
points = [x y];


% compute Voronoi diagram
[vx vy] = voronoi(x, y);

% transform into edge format
edges = [vx(1,:)' vy(1,:)' vx(2,:)' vy(2,:)'];

Draw Result

% create figure
figure(1); clf;
axis(window);hold on;

% draw diagram
drawEdge(edges);
drawPoint(points, 'bo');