情人节了 送一个情人节礼物
function h=implicitsurf(f,xlimit,ylimit,zlimit,gd)if nargin==2
ylimit=xlimit;zlimit=xlimit;gd=25;
elseif nargin==3
gd=ylimit;ylimit=xlimit;zlimit=xlimit;
elseif nargin==4
gd=25;
elseif nargin==5
else
error('Error in input arguments')
end
if length(gd)==1
gd=;
end
x=linspace(xlimit(1),xlimit(2),gd(1));
y=linspace(ylimit(1),ylimit(2),gd(2));
z=linspace(zlimit(1),zlimit(2),gd(3));
=meshgrid(x,y,z);val=f(x,y,z);
=isosurface(x,y,z,val,0);
if isempty(f)
warning('There is no graph in the range.');
p=[];
else
newplot;
p=patch('Faces',f,'Vertices',v,'CData',v(:,3),'facecolor','flat','EdgeColor','k');
isonormals(x,y,z,val,p);view(3);grid on
end
if nargout==0
else
h=p;
end
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%例三:
%f=@(x,y,z)(x.^2 + (9/4)*y.^2 + z.^2 - 1).^3 - x.^2.*z.^3 - (9/80)*y.^2.*z.^3;
%g=@(x,y,z)(sqrt(x.^2+y.^2)-2).^2+z.^2-.09;
%h=implicitsurf(f,[-1.5 1.5],[-.8 .8],[-1.5 1.5],50);
%set(h,'AmbientStrength',.5);%可以设置各种效果
%hold on%可以添加图形
%h=implicitsurf(g,[-2.3,2.3],[-2.3,2.3],[-.3,.3]);
%colormap hsv;set(h,'AmbientStrength',.8,'FaceAlpha',.5);%可以设置各种效果
%axis off;axis equal;shading interp;camlight;lighting gouraud;spinmap(10); 将%%%%下面的代码运行就可以了 看看一个神奇的东西 你是从事哪方面健康检测的? {:{39}:}
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