matlab绘制3D玫瑰花

首先,新建m文件,复制以下代码

function y=hb(x)

[m n]=size(x);

for i=1:m

for j=1:n

if rem(x(i,j),2*pi)>=0&&rem(x(i,j),2*pi)<0.5*pi

y(i,j)=sin(2*x(i,j)-0.5*pi)+1

elseif rem(x(i,j),2*pi)>=0.5*pi&&rem(x(i,j),2*pi)<1.5*pi

y(i,j)=2

elseif rem(x(i,j),2*pi)>=1.5*pi&&rem(x(i,j),2*pi)<2*pi

y(i,j)=-cos(2*x(i,j))+1

end

end

end

end

保存后,将下列代码复制到command窗口中,按回车运行即可。

t=0:0.01*pi:2*pi

for i=1:5

r(i,:)=i-0.9:0.1:i+0.1;

end

%绘制花瓣

for i=1:5

a=r(i,:);

b=t;

[a,b]=meshgrid(a,b)

z=(log(a)+5).*hb(5*b+pi*i).*abs(sin(pi*a))

[x,y,z]=pol2cart(b,a,z)

surf(x,y,z,(40+i)*ones(size(z)))

hold on

end

%绘制花托

[xx,yy]=meshgrid(-5:0.1:5);

h=2*cos((xx.^2+yy.^2).^0.5)-0.64;

surf(xx,yy,h,27*ones(size(h)));

hold on

%绘制补色

xxx=[-0.1 0.1];

yyy=xxx;

[xxx,yyy]=meshgrid(xxx,yyy);

c=zeros(size(xxx))

for i=1:50

surf(xxx,yyy,c,i*ones(size(c)))

hold on

end