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| function calcul_ellipsoide(h,e,val_k)
t_debut=tic;
mex=[];
[phi, theta]=meshgrid([0:0.9:pi], [0:0.9:2*pi]);
global chemin_final;
fid = fopen(chemin_final, 'rt');
t_start=tic;
while feof(fid) == 0
tline = fgetl(fid);
TargetVar = regexp(tline,' ','split');
if length(TargetVar)>2
[xc, reste] =strtok(tline, ' ');
[yc, reste] =strtok(reste, ' ');
[zc, reste] =strtok(reste, ' ');
[Rayon, reste] =strtok(reste, ' ');
h=h+1;
Pts(h,1:3)= [str2num(xc) str2num(yc) str2num(zc)] ;
Ray(h,1)=str2num(Rayon);
Vol(h,1)=((4/3)*pi)*(Ray(h)^3);
end
end
t_while = toc(t_start);
%---------------------------fin du bloc 1--------------------
k=val_k;
%---------------------------debut du bloc 2--------------------
t_debut2=tic;
[idx,C]=kmeans_kemgue(Pts,k,Vol,Ray,'distance','madist');
fig=figure('name','Modelix-visualisation ellipsoides','WindowStyle','modal');
axis equal;
t_kmeans=toc(t_debut2);
%---------------------------fin du bloc 2--------------------
%title(sprintf('Visualisation du sous ensemble'))
%---------------------------debut du bloc 3--------------------
t_debut3=tic;
%l = parallel.pool.Constant(mex);
% i=1;
%while i <k
parfor (i=1:k,8)
members = (i == idx);
disp(strcat('Cluster numero <',num2str(i),'>'));
sousEns=Pts(members,:);
if(isempty(sousEns)==1)
continue
end
sousRay=Ray(members);
disp('De Centroid');
disp(C(i,:));
Echan=[];
% l=size(sousEns,1);
% parfor (j = 1:l,8)
for j=1:size(sousEns,1)
xx=[];
yy=[];
zz=[];
xx=sousRay(j)*sin(phi).*cos(theta)+sousEns(j,1);
yy=sousRay(j)*sin(phi).*sin(theta)+sousEns(j,2);
zz=sousRay(j)*cos(phi)+sousEns(j,3);
% disp('OOOKKKKK')
n=size(xx(:),1);
Echan2=[];
Echan2(1:n,1)=xx(:);
Echan2(1:n,2)=yy(:);
Echan2(1:n,3)=zz(:);
Echan=[Echan2;Echan];
[xu,yu,zu] = sphere;
x = xu*sousRay(j) + sousEns(j,1);
y = yu*sousRay(j) + sousEns(j,2);
z = zu*sousRay(j) + sousEns(j,3);
c = ones(size(z))*1;
hold on;
surf(x,y,z,c);
end
% envConvex=[]
% Echan
hold on
% disp('Echantillons');
% disp(Echan);
% Calcul de l'enveloppe convexe du sous ensemble de boule
[envConvex,vol]=convhull(Echan,'simplify',true);
% Ajout de l'enveloppe convexe du sous ensemble sur le dessin
% trisurf(envConvex,Echan(:,1),Echan(:,2),Echan(:,3), 'Facecolor','cyan'); axis equal;
col1=Echan(:,1);
col2=Echan(:,2);
col3=Echan(:,3);
% trisurf(envConvex,col1,col2,col3, 'Facecolor','cyan');
% Ajout des points echantionné d'un sous ensemble sur la figure de
% visualisation.% hold on
plot3(Echan(:,1),Echan(:,2),Echan(:,3),'.');
% Trace de l'ellipsoide qui approxime l'envesloppe convexe.
plot3(col1(envConvex(:,1)),col2(envConvex(:,2)),col3(envConvex(:,3)),'.');
Ptsapp=[];
Ptsapp=[col1 col2 col3];
hold on;
nbptsvisual=15;
[A1 centro] = approximation(Ptsapp',0.01)
[~,D1,V1] = svd(A1);
rx = 1/sqrt(D1(1,1));
ry = 1/sqrt(D1(2,2));
rz = 1/sqrt(D1(3,3));
me = [centro(1) centro(2) centro(3) rx ry rz];
mex=[me;mex];
[u v] = meshgrid(linspace(0,2*pi,nbptsvisual),linspace(-pi/2,pi/2,nbptsvisual))
x1 = rx*cos(u').*cos(v');
y1 = ry*sin(u').*cos(v');
z1 = rz*sin(v');
for indx = 1:nbptsvisual
for indy = 1:nbptsvisual
poin = [x1(indx,indy) y1(indx,indy) z1(indx,indy)]';
Pt = V1 * poin;
x1(indx,indy) = Pt(1)+centro(1);
y1(indx,indy) = Pt(2)+centro(2);
z1(indx,indy) = Pt(3)+centro(3);
end
end
uicontrol(fig, 'style','pushbutton', 'string','sauvergader', 'units','normalized', 'fontsize',11, 'position',[.05 .05 .15 .07], 'FontWeight','bold', 'FontName','Times New Roman', 'callback',{@sauvegarder,mex});
mesh(x1,y1,z1,'facecolor','none');
% set(me,'facecolor','none');
% surf(x1,y1,z1);
% i=i+1;
end
t_for=toc(t_debut3);
%---------------------------fin du bloc 3--------------------
end |
