原来还可以这样玩matlab！！！

function plot_rose
% 原作者：Binbin Qi
% 来源:https://ww2.mathworks.cn/matlabcentral/fileexchange/25418-plot-rose
draw_main(450,90);
function draw_main(x,y)
arcdata{1}=[65 -60 150 350 8;66 -54 300 470 8;65 -56 30 230 10;64 -57 300 490 17];
ellipsedata{1}=[73 -30 250 450 27 40;59 -30 100 290 27 40;65  -40 140 270 20 30];
arcdata{2}=[0 0 150 350 12;1 8 280 470 12;0 2 30 230 16;0 3 80 240 28;2 8 180 330 22;-2 2 310 460 25];
ellipsedata{2}=[-12 30 120 300 30 40;10 28 250 423 30 42;-4  10 290 393 30 40];
ellipsedata{3}=[120 5 0 360 15 25];
ellipsedata{4}=[-70 10 0 360 14 20];
rose_e{2}=[x+16 y+32 235 355 26 35;x-15 y+32 190 310 30 35;x+0 y+35 190 350 43 50];
rose_e{1}=[x+80 y-48 220 350 22 50;x+50 y-48 190 320 22 50;x+65 y-28 180 360 36 50];
rose_e{3}=[x+120 y-6 200 340 17 25;x+120 y+7 160 380 17 27];
rose_e{4}=[x-70 y+15 140 390 17 20;x-75 y-10 205 340 10 30;x-60 y-10 195 340 5 30];

arcdata{3}=[0 82 190 350 6];
% 在此处修改可以变更花瓣、花茎、背景等颜色
ss={'r','b','b','r'};
s0={'k','k','g'};
figure('menubar','none','numbertitle','off','name','rose');
hold on
for j=1:length(ellipsedata)
    for i=1:size(ellipsedata{j},1)
        rectangle('Position',[x+ellipsedata{j}(i,1)-ellipsedata{j}(i,5),y+ellipsedata{j}(i,2)-ellipsedata{j}(i,6),2*ellipsedata{j}(i,5),2*ellipsedata{j}(i,6)],'Curvature',[1,1],'FaceColor',ss{j})
    end
    if j<4
        for i=1:size(arcdata{j},1)
            draw_arc(x+arcdata{j}(i,1),y+arcdata{j}(i,2),arcdata{j}(i,3),arcdata{j}(i,4),arcdata{j}(i,5),s0{j});
        end
    end
    for i=1:size(rose_e{j},1)
        plot_rose_e(rose_e{j},j);
    end
end
for j=1:3
    zhuzhi=[x-98,y+100+j,255,371,100,80;x-20,y+30+j,260,358,140,140;x+224,y+20+j,180,218,160,140];
    draw_branch(zhuzhi);
end
ce_branch=[x+70,y+34,180,233,140,140; x,y+40,205,255,100,120; x+135,y-30,209,249,72,120; x,y+20,263,301,100,120; x+85,y-10,278,305,100,120; x+100,y-62,282,308,90,120; x-50,y-10,277,314,30,120; x+70,y+80,222,266,52,120; x-60,y-45,229,266,52,120; x+79,y-45,229,266,52,120; x+84,y,224,273,52,120; x+110,y+40,240,282,100,120];
draw_branch(ce_branch);
 t_leaf=[x+168,y+282,10,20,-40; x+160,y+252,8,16,260; x+145,y+270,8,16,-15; x+156,y+224,10,20,-45; x+150,y+200,8,16,270; x+135,y+220,8,16,-10; x+146,y+144,8,16,-80; x+130,y+130,6,12,235; x+125,y+154,7,14,-10; x+78,y+98,6,12,-90; x+60,y+90,5,10,180; x+70,y+109,5,10,-45;x-125,y+270,12,24,60; x-95,y+270,10,20,10; x-110,y+245,10,20,90; x-105,y+220,10,20,45; x-100,y+190,8,16,135; x-75,y+210,8,16,-45; x+65,y+190,10,20,-45; x+40,y+185,8,16,0; x+55,y+165,8,16,90];
for j=1:size(t_leaf,1)
    draw_elli(t_leaf(j,1),t_leaf(j,2),t_leaf(j,3),t_leaf(j,4),t_leaf(j,5));
end
axis ij
axis off
set(gcf,'color','k');
daspect([1,1,1])
function draw_elli(x0,y0,a,b,theta)
theta=-theta;
t = 0:0.01:2*pi;
x =  a*cos(t);
y =  b*sin(t);
xy = zeros(2,length(t));
for i = 1:length(t)
    xy(:,i) = expm([0,-pi/180*theta;pi/180*theta,0])*[x(i);y(i)];
end
plot(x0 +xy(1,:),480-y0 + xy(2,:),'g');
function draw_arc(x0,y0,st_a,en_a,r,c_c)
t = (pi/180*st_a:0.01:pi/180*en_a)-pi;
x = x0 + r*cos(t);
y = y0 + r*sin(t);
plot(x,y,c_c);
function plot_rose_e(matr,ch)
x=[];y=[];n=size(matr,1);
for i=1:size(matr,1)
    t=(matr(i,3):matr(i,4))*pi/180-pi;
    x1=matr(i,1)+matr(i,5)*cos(t);
    y1=matr(i,2)+matr(i,6)*sin(t);
    if i<3
        x1=2*matr(i,1)-x1;
    end
    x1=fliplr(x1);
    y1=fliplr(y1);
    if n<3 && i<2
        x1=fliplr(x1);
        y1=fliplr(y1);
    end
    if ch==4 && i==2
        x1=fliplr(x1);
        y1=fliplr(y1);
    end
    
    x=[x,x1];
    y=[y,y1];
end
fill(x,y,'g');
function draw_branch(zhuzhi)
for k=1:size(zhuzhi,1)
    t=(zhuzhi(k,3):zhuzhi(k,4))*pi/180-pi;
    x1=zhuzhi(k,1)+zhuzhi(k,5)*cos(t);
    y1=zhuzhi(k,2)+zhuzhi(k,6)*sin(t);
    x1=2*zhuzhi(k,1)-x1;
    plot(x1,y1,'g','linewidth',2);
end

[x,y,z]=meshgrid(linspace(-1.3,1.3));
f=(x.^2+(9/4)*y.^2+z.^2-1).^3-x.^2.*z.^3-(9/80)*y.^2.*z.^3;
p=patch(isosurface(x,y,z,f,0));
set(p,'FaceColor','red','EdgeColor','none');
daspect([1 1 1])
view(3)
camlight;
lighting phong
%legend('520,2014')
set(gca,'XTickLabel',{'20100118','20130520','20190118','20190201','20190307','20190520','Forever'})
set(gca,'YTickLabel',{'You','and','Me','Love','Forever'})
set(gca,'ZTickLabel',{'Love'})
grid on
[x,y]=meshgrid(-10:0.01:10);
z=-(17*x.^2-16*y.*abs(x)+17.*y.^2);
figure
[c,h]=contourf(z,100);set(h,'linestyle','none')
axis off
legend('2jy');

% 左图
clear,clc
[x,t] = meshgrid((0:24)/24,((0:575)/575*17-2)*pi);
p     = (pi/2)*exp(-t/8/pi);
u     = 1-(1-mod(3.6*t/pi,2)).^4/2;
y     = 2*(x.*(x-1)).^2.*sin(p);
r     = u.*(x.*sin(p)+y.*cos(p));
z     = u.*(x.*cos(p)-y.*sin(p));
y     = r.*sin(t);
x     = r.*cos(t);
figure('Color','k') 
surface(x,y,z,'EdgeColor','none','FaceColor','r')
view(-22,66),axis equal off
light('pos',[-.25 -.25 1], 'style','local', 'color',[1 .84 .6])
lighting gouraud

% 右图
clear,clc
[x,t] = meshgrid((0:24)/24,((0:575)/575*17-2)*pi);
p     = (pi/2)*exp(-t/8/pi);
u     = 1-(1-mod(2.5*t/pi,2)).^4/2;
y     = 2*(x.*(x-1)).^2.*sin(p);
r     = u.*(x.*sin(p)+y.*cos(p));
z     = abs(u.*(x.*cos(p)-y.*sin(p)));
z     = 4*z.*r;
x     = r.*cos(t).*(abs(sin(2.3*sqrt(z)))+.3*z);
y     = r.*sin(t).*(abs(sin(2.3*sqrt(z)))+.3*z);
figure('Color','k') 
surface(x,y,z,'EdgeColor','none','FaceColor','r')
view(-36,18),axis equal off
light('pos',[-.25 -.25 1], 'style','infinite', 'color',[1 .84 .6])
lighting gouraud

% 来源:https://blog.csdn.net/u013346007/article/details/55222642
clear
filename='heart';
[x,y,z]=meshgrid(linspace(-3,3)); 
p=(x.^2+(9/4)*y.^2+z.^2-1).^3-x.^2.*z.^3-(9/80)*y.^2.*z.^3; 
[faces,verts,colors] = isosurface(x,y,z,p,0,x);
for i = 1:18
    figure(i)
    pp = patch('Faces',faces(1:284+i*500,:),'Vertices',verts);
    set(pp,'FaceColor','red','EdgeColor','none');
    view(-30,24)
    axis off
    axis equal
    axis tight
    camlight
    lighting gouraud
    pause(0.5)
    f(i) = getframe(i);
    imind = frame2im(f(i));
    [imind,cm] = rgb2ind(imind,256);
    if i == 1
        imwrite(imind,cm,filename,'gif', 'Loopcount',inf,'DelayTime',0.5);
    else
        imwrite(imind,cm,filename,'gif','WriteMode','append','DelayTime',0.5);
    end
    close(i)
end

% 来源：https://blog.csdn.net/robert_chen1988/article/details/53123462
t = 0:0.1:2*pi;
len = length(t);
x = 16*(sin(t)).^3;
y = 13*cos(t) - 5*cos(2*t) - 2*cos(3*t) - cos(4*t);
figure;
hold on;
for p = 1:4
    for k = 1:len
        plot(x(1:k)/p,y(1:k)/p,'r','LineWidth',5);
        axis off;
        xlim([-20 20]);
        ylim([-20 15]);
        pause(0.0000001);
    end
end
hold off;