近期确实是比较忙，更得也比较慢，这次整个活：
甲基橙 hiahihia
效果：


注意，请将以下图片命名为surf.png并放在m文件所在文件夹：
自己截图拼的橙子皮，大家有更好看的可以自行替换：

原理也很简单，只是画一些桶装曲面和球状曲面拼在一起并打光，橙子的话贴个图，
完整代码：

function CH4_Orange
% @author:slandarer
% 仅供娱乐(甲基橙结构式！)：
% -----------------+
%    H             |
%     \            |
% H — C — Orange |
%     /            |
%    H             |
% -----------------+

% axes属性设置
ax=gca;
hold(ax,'on')
ax.PlotBoxAspectRatio=[1 1 1];
ax.PlotBoxAspectRatioMode='manual';
ax.XLim=[-4 4];
ax.YLim=[-4 4];
ax.ZLim=[-5 3];
ax.View=[45,45];
ax.XGrid='on';
ax.YGrid='on';
ax.ZGrid='on';
ax.Color=[0 0 0];
% =========================================================================

% 绕轴旋转矩阵
yaw_z=2*pi/3;
roll_x=acos(1/3);
R_z=[cos(yaw_z),-sin(yaw_z),0;
    sin(yaw_z) ,cos(yaw_z) ,0;
    0          ,0          ,1];
R_x=[1,0          ,           0;
     0,cos(roll_x),-sin(roll_x);
     0,sin(roll_x),cos(roll_x)];

% -------------------------------------------------------------------------
% 绘制C原子
[Xball,Yball,Zball]=sphere(300); % 制作球形曲面
surf(Xball,Yball,Zball,'FaceColor',[.2,.2,.2],'EdgeColor','none')

% 绘制三个H原子
[nX,nY,nZ]=rotateXYZ(Xball.*.8,Yball.*.8,Zball.*.8+2.5,R_x);
for k=1:3
    [nX,nY,nZ]=rotateXYZ(nX,nY,nZ,R_z);
    surface(nX,nY,nZ,'FaceColor',[.95,.95,.95],'EdgeColor','none')
end

% 橘子表面图倒入
surfImg=imread('surf.png');
surfImg=imresize(surfImg,size(Zball));





% -------------------------------------------------------------------------
% 制作一个圆筒状曲面
[Tcol,Zcol]=meshgrid(0:(2*pi/100):2*pi,(1:100)./100);
Xcol=cos(Tcol);
Ycol=sin(Tcol);

% 绘制连接杆
surf(0+Xcol.*.3,0+Ycol.*.3,-1.7+Zcol,'FaceColor',[.3,.3,.3],'EdgeColor','none')
[nX,nY,nZ]=rotateXYZ(Xcol.*.3,Ycol.*.3,Zcol.*.4+0.95,R_x);
for k=1:3
    [nX,nY,nZ]=rotateXYZ(nX,nY,nZ,R_z);
    surface(nX,nY,nZ,'FaceColor',[.3,.3,.3],'EdgeColor','none')
end
[nX,nY,nZ]=rotateXYZ(Xcol.*.3,Ycol.*.3,Zcol.*.4+1.35,R_x);
for k=1:3
    [nX,nY,nZ]=rotateXYZ(nX,nY,nZ,R_z);
    surface(nX,nY,nZ,'FaceColor',[.98,.98,.98],'EdgeColor','none')
end

% 打光
light;
material shiny %让上面所有曲面都有镜面质感

% 在最后画橙子，将镜面反射调低，漫反射调高，让他有布料质感
surf(Xball.*2,Yball.*2,-3+Zball.*1.7,'CData',surfImg,...
    'EdgeColor','none','SpecularStrength',.0001,'DiffuseStrength',.7)
% =========================================================================

% 点绕轴旋转函数
    function [nX,nY,nZ]=rotateXYZ(X,Y,Z,R)
        nX=zeros(size(X));
        nY=zeros(size(Y));
        nZ=zeros(size(Z));
        for i=1:size(X,1)
            for j=1:size(X,2)
                v=[X(i,j);Y(i,j);Z(i,j)];
                nv=R*v;
                nX(i,j)=nv(1);
                nY(i,j)=nv(2);
                nZ(i,j)=nv(3);
            end
        end
    end
% -------------------------------------------------------------------------
end