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Python&Matlab实现炫酷的3D旋转图

作者：电力系统与算法之美

这篇文章主要为大家介绍了如何利用Python和Matlab分别实现酷炫的3D旋转图，文中的示例代码讲解详细，感兴趣的可以了解一下

前言

我们今天的任务很明确，我先系统梳理一下：

1.先用Python爬取一波漂亮的美女照片；

2.然后Python中炫酷的代码实现；

3.最后用matlab伺候，得到相同的结果。

1.Python爬取美女照片 

1.1 留恋忘返的网址

站长素材-分享综合设计素材的平台 (chinaz.com)

1.2 Python代码

 
#~~~~欢迎关注公众号：电力系统与算法之美~~~~~~~~~~~~·
 
#~~~~~~~~~导入相关库~~~~~~~~~~~~~~~~~~~~·
import urllib.request
from lxml import etree
 
#~~~~~~~~~1.请求对象的定制~~~~~~~~~~~~~~~~~
def create_request(page):
    if (page == 1):
        url = 'https://sc.chinaz.com/tag_tupian/YaZhouMeiNv.html'
    else:
        url = 'https://sc.chinaz.com/tag_tupian/yazhoumeinv_' + str(page) + '.html'
    # print(url)
    headers = {
        'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.104 Safari/537.36'
    }
    request = urllib.request.Request(url=url, headers=headers)
    return request
 
 
#~~~~~~~~~~~2.获取网页的源码~~~~~~~~~~~~~~~~~~~~~
def get_content(request):
    response = urllib.request.urlopen(request)
    content = response.read().decode('utf-8')
    return content
 
 
#~~~~~~~~~~~~~~~~~~~3.下载图片~~~~~~~~~~~~~~~~~~~~~~~~~~
def down_img(content):
    # 下载文件格式：urllib.request.urlretrieve('图片地址','文件的名字')
    tree = etree.HTML(content)
    name_list = tree.xpath('//div[@id = "container"]//a/img/@alt')
    # 一般涉及到图片的网站，都会进行懒加载，要把src换成src2(懒加载时，src会以src2出现)
    src_list = tree.xpath('//div[@id = "container"]//a/img/@src2')
    # print(len(name_list))
    # print(len(src_list))
    for i in range(len(name_list)):
        name = name_list[i]
        src = src_list[i]
        url = 'https:' + src
        url = url.replace('_s', '')
        urllib.request.urlretrieve(url=url, filename='./meinv/' + name + '.jpg')
 
#~~~~~~~~~运行~~~~~~~~~~~~~~~
if __name__ == '__main__':
    start_page = int(input('请输入起始页码：'))
    end_page = int(input('请输入终止页码：'))
 
    for page in range(start_page, end_page + 1):
        #~~~~1.定制请求对象~~~~~
        request = create_request(page)
        #~~~~2.获取网页源码~~~~~
        content = get_content(request)
        #~~~~~3.解析源码并下载图片~~~
        down_img(content)

1.3 结果 

温馨提示：meinv这个文件夹是提前建立的。 

2.Python实现

2.1 条件准备

由1中爬取的照片，我们就可以为接下来的事做准备啦。选取十二张照片，如图：

2.2 运行展示 

运行出来比下面这个还炫酷：

2.3 Python实现

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS3制作3D图片立方体旋转特效</title>
<link rel="stylesheet" href="css/index.css" rel="external nofollow" >
</head>
<body>
<!--/*外层最大容器*/-->
<div class="wrap">
<!--	/*包裹所有元素的容器*/-->
<div class="cube">
	<!--前面图片 -->
	<div class="out_front">
		<img src="img/1.jpg" class="pic">
	</div>
	<!--后面图片 -->
	<div class="out_back">
		<img src="img/2.jpg" class="pic">
	</div>
	<!--左图片 -->
	<div class="out_left">
		<img src="img/3.jpg" class="pic">
	</div>
	<!--右图片 -->
	<div class="out_right">
		<img src="img/4.jpg" class="pic">
	</div>
	<!--上图片 -->
	<div class="out_top">
		<img src="img/5.jpg" class="pic">
	</div>
	<!--下图片 -->
	<div class="out_bottom">
		<img src="img/6.jpg" class="pic">
	</div>
	<!--小正方体 --> 
	<span class="in_front">
		<img src="img/7.jpg" class="in_pic">
	</span>
	<span class="in_back">
		 <img src="img/8.jpg" class="in_pic">
	</span>
	<span class="in_left">
		<img src="img/9.jpg" class="in_pic">
	</span>
	<span class="in_right">
		<img src="img/10.jpg" class="in_pic">
	</span>
	<span class="in_top">
		<img src="img/11.jpg" class="in_pic">
	</span>
	<span class="in_bottom">
		<img src="img/12.jpg" class="in_pic">
	</span>
</div>
</div>
</body>
</html>

3.Matlab实现

3.1 运行展示

动态视频：

3.2 Matlab代码

%====欢迎关注关注号：电力系统与算法之美
function wlz3d
path='.\meinv\';%文件夹名称
files=dir(fullfile(path,'*.jpg')); 
picNum=size(files,1);
 
%% 遍历路径下每一幅图像
for i=1:picNum
   fileName=strcat(path,files(i).name); 
   img=imread(fileName);
   img=imresize(img,[120,120]);
   imgSet{i}=img;
end
 
%% fig axes设置
fig=figure('units','pixels','position',[50 50 600 600],...
                       'Numbertitle','off','resize','off',...
                       'name','album3d','menubar','none');
ax=axes('parent',fig,'position',[-0.5 -0.5 2 2],...
   'XLim', [-6 6],...
   'YLim', [-6 6],...
   'ZLim', [-6 6],...
   'Visible','on',...
   'XTick',[], ...
   'YTick',[],...
   'Color',[0 0 0],...
   'DataAspectRatioMode','manual',...
   'CameraPositionMode','manual');
hold(ax,'on')
ax.CameraPosition=[5 5 5];
 
%% 用于绘制图片的网格
[XMesh,YMesh]=meshgrid(linspace(-1,1,120),linspace(-1,1,120));
ZMesh=ones(120,120);
 
%% 绘制图片立方体
surfPic(1)=surf(XMesh,YMesh,ZMesh,'CData',imgSet{mod(0,picNum)+1},'EdgeColor','none','FaceColor','interp');
surfPic(2)=surf(XMesh,YMesh(end:-1:1,:),-ZMesh,'CData',imgSet{mod(1,picNum)+1},'EdgeColor','none','FaceColor','interp');
surfPic(3)=surf(ZMesh,XMesh,YMesh(end:-1:1,:),'CData',imgSet{mod(2,picNum)+1},'EdgeColor','none','FaceColor','interp');
surfPic(4)=surf(XMesh,ZMesh,YMesh(end:-1:1,:),'CData',imgSet{mod(3,picNum)+1},'EdgeColor','none','FaceColor','interp');
surfPic(5)=surf(-ZMesh,XMesh,YMesh(end:-1:1,:),'CData',imgSet{mod(4,picNum)+1},'EdgeColor','none','FaceColor','interp');
surfPic(6)=surf(XMesh,-ZMesh,YMesh(end:-1:1,:),'CData',imgSet{mod(5,picNum)+1},'EdgeColor','none','FaceColor','interp');
 
%% 依靠小立方体数据绘制中等立方体
for i=1:6
    surfPicA(i)=surf(surfPic(i).XData.*1.5,surfPic(i).YData.*1.5,surfPic(i).ZData.*1.5,...
        'CData',surfPic(i).CData,'EdgeColor','none','FaceColor','interp','FaceAlpha',0.7);  
end
 
%% 用来调整放大比例的矩阵
resizeMat=[2 2 2.5;2 2 2.5;2.5 2 2;
           2 2.5 2;2.5 2 2;2 2.5 2];
 
%% 最大图片绘制       
% for i=1:6
%     surfPicB(i)=surf(surfPic(i).XData.*resizeMat(i,1),...
%                      surfPic(i).YData.*resizeMat(i,2),...
%                      surfPic(i).ZData.*resizeMat(i,3),...
%                      'CData',surfPic(i).CData,'EdgeColor',...
%                      'none','FaceColor','interp','FaceAlpha',0.7);  
% end     
 
 
lastDis=300;
preDis=300;
set(fig,'WindowButtonMotionFcn',@move2center)    
    function move2center(~,~)
        xy=get(fig,'CurrentPoint');
        preDis=sqrt(sum((xy-[300,300]).^2));
    end
 
 
 
fps=40;theta=0;
rotateTimer=timer('ExecutionMode', 'FixedRate', 'Period',1/fps, 'TimerFcn', @rotateCube);
start(rotateTimer)
 
 
 
    function rotateCube(~,~)
        theta=theta+0.02;
        ax.CameraPosition=[cos(theta)*5*sqrt(2),sin(theta)*5*sqrt(2),5];
        if (~all([preDis lastDis]<150))&&any([preDis lastDis]<150)
            for ii=1:6
                if preDis<150
                    surfPicA(ii).XData=surfPic(ii).XData.*resizeMat(ii,1);
                    surfPicA(ii).YData=surfPic(ii).YData.*resizeMat(ii,2);
                    surfPicA(ii).ZData=surfPic(ii).ZData.*resizeMat(ii,3);
                else
                    surfPicA(ii).XData=surfPic(ii).XData.*1.5;
                    surfPicA(ii).YData=surfPic(ii).YData.*1.5;
                    surfPicA(ii).ZData=surfPic(ii).ZData.*1.5;
                end
            end
        end
        lastDis=preDis;
    end
 
% 弃用方案：太卡
% set(fig,'WindowButtonMotionFcn',@move2center)    
%     function move2center(~,~)
%         xy=get(fig,'CurrentPoint');
%         dis=sum((xy-[300,300]).^2);
%         for ii=1:6
%             if dis<200
%                 surfPicA(ii).XData=surfPic(ii).XData.*resizeMat(ii,1);
%                 surfPicA(ii).YData=surfPic(ii).YData.*resizeMat(ii,2);
%                 surfPicA(ii).ZData=surfPic(ii).ZData.*resizeMat(ii,3);
%             else
%                 surfPicA(ii).XData=surfPic(ii).XData;
%                 surfPicA(ii).YData=surfPic(ii).YData;
%                 surfPicA(ii).ZData=surfPic(ii).ZData;
%             end    
%         end
%         
%         
%         
%     end
 
end

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