%例一:二維三角網TIN模型的生成
X=rand(10,2)*5;
dt=DelaunayTri(X(:,1),X(:,2));
%生成三角網
triplot(dt);hold
on
;
%繪圖
scatter(X(:,1),X(:,2),
'o'
),hold
off
%將結點展示出來(散點)

%例二:三維TIN的生成(由規則點生成)
[x,y]=meshgrid(1:15,1:15);z=peaks(15);
tri=delaunay(x,y);
%以X,Y為准生成Delaunay triangulation(三角網)
trisurf(tri,x,y,z);
%將該三角網顯示出來
colormap
autumn
;
%方法一
%If the surface is in the form of a TriRep
%triangulation representation, plot it as follows:
%tr=TriRep(tri,x(:),y(:),z(:));trisurf(tr); %方法二
%plot3(x(:)', y(:)', z(:)')

%例三:離散點生成TIN三角網模型
A=rand(300,2)*20-10;X=A(:,1);Y=A(:,2);
%X,Y的區間為[10,10]
R=sqrt(X.^2 + Y.^2);Z=sin(R)./R;
%函數,計算對應點坐標的函數值
tri=delaunay(X,Y);trisurf(tri,X,Y,Z);
%以X,Y為准生成Delaunay triangulation(三角網)
colormap
jet
;hold
on
scatter3(X(:),Y(:),Z(:),
'r'
);hold
off
%將散點展示出來

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