MATLAB程序设计报告--基于MATLAB动画播放及音乐播放

1、2012-2013学年第二学期MATLAB课设MATLAB程序设计课程设计报告设 计 题 目： 基于MATLAB的动画演示 及背景音乐插入 专 业： 2011级通信工程 姓名（学号）： 储兆雄 1162310213 邓少林 1162310214 徐凯越 1162310223 指 导 教 师： 倪建军（博士/副教授）时 间： 2013年12月20日 目录1、设计目的2、总体设计3、具体设计（功能实现）4、结果分析5、改进方向6、心得体会文献附录1、设计目的学会运用matlab工具箱实现matlab GUI设计，处理动画运行，以及添加背景音乐，并实现其动态操作，如继续、暂停等功能。2、总体设计主要

2、包括：动画模块，音乐模块，动画显示模块3、具体设计（功能实现）1) 动画模块（1）打开动画文件：从文件打开对话框选择动画程序，实现动画播放的可选择性程序实现代码如下：function btnvopen_Callback(hObject, eventdata, handles)% hObject handle to btnvopen (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDA

3、TA)global vfname %动画文件名vfname vpname vindex=uigetfile(*.m,choose moive file);len=length(vfname);if vindex set(handles.txtvname,string,vfname(1:len-2)end打开对话框效果如下：（2）开始动画播放：先获取文件名称vfname(1:len-2)，然后用run()命令来执行程序实现代码如下：function btnvstart_Callback(hObject, eventdata, handles)% hObject handle to btnvsta

4、rt (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)global vfnametry len=length(vfname); run(vfname(1:len-2);catch msgbox(sorry, there are some error while playing movie!,NOTICING);end以下是其中两个动画程序snow动画%*设置背景*%A=im

5、read(H:YOU.jpg);h=figure;imshow(A); axes axis(0 1 0 1);axis off;set(gcf,color,k); N=20; handles=zeros(1,N);x=rand(2,N);fontsize=floor(rand(1,N)*17+32); new_handles_N=0;%绘图for i=1:N handles(i)=text(x(1,i),x(2,i),*,fontsize,fontsize(i),color,w); endwhile 1 if ishandle(h) return end for i=1:N temp=get(

6、handles(i),position); step=get(handles(i),fontsize)/48*0.05; if temp(2)0 new_handles_N=new_handles_N+1; new_handles(new_handles_N)= copyobj(handles(i),gca); if new_handles_N=500 delete(new_handles); new_handles_N=0; end temp(1)=rand(1); temp(2)=1; else temp(1)=temp(1)+rand(1)*0.1-0.05; temp(2)=temp(

7、2)-step; end set(handles(i),position,temp,rotation,get(handles(i),rotation)+5); end pause(.2)end简单程序动画try Movie=moviein(16); for k=1:16 plot(fft(eye(k+16) axis equal axis off M(k)=getframe; end movie(M,30);catch msgbox(sorry, there are some error while playing movie!,NOTICING);end动画效果如下：（3）暂停/继续功能：获

8、取pause按钮string参数，实现暂停和继续播放功能的切换，而通过timerPause()函数来实现其功能程序实现代码如下：function btnvpause_Callback(hObject, eventdata, handles)% hObject handle to btnvpause (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)global symPaus

9、etry if strcmp(get(handles.btnvpause,string),pause) handles.timer1 = timer(Period, 0.1, ExecutionMode, singleShot,timerFcn, timerPause); set(handles.btnvpause,string,continue) start(handles.timer1); elseif strcmp(get(handles.btnvpause,string),continue) symPause =0; set(handles.btnvpause,string,pause

10、) endcatch msgbox(sorry, there are some error while excuting the function!,NOTICING,error);endfunction timerPause(hObject,eventdata,handles)global symPausesymPause=1;while symPause=1 pause(1)end（4）添加文字function btnvshow_Callback(hObject, eventdata, handles)% hObject handle to btnvshow (see GCBO)% eve

11、ntdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)try if get(handles.txtvword,string) set(handles.stxtshow,string,get(handles.txtvword,string),. visible,on,fontname,fontsize,12.0); else set(handles.stxtshow,visible,off); msgbox(A

12、dd some words first!); endcatch msgbox(sorry, there are some error while excuting the function!,NOTICING,error);end2）音乐模块（1）打开音乐function btnmbrowse_Callback(hObject, eventdata, handles)% hObject handle to btnmbrowse (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handle

13、s structure with handles and user data (see GUIDATA)global mfilepathtry mfname mpname mindex=uigetfile(*.wav,choose music); if mindex mfilepath=mpname mfname; set(handles.edit1,string,mfilepath); endcatch msgbox(Error,while importing music,NOTICING,error);end（2）播放音乐function btnstart_Callback(hObject

14、, eventdata, handles)% hObject handle to btnstart (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)global mfilepath player signsign=false;try if mfilepath=0 data,Fs,nbits=wavread(mfilepath); else try data,Fs,nbits

15、=wavread(you are a song in my heart.wav); catch msgbox(sorry,the default music does not exist,NOTICING); end end player=audioplayer(data,Fs,nbits); play(player); sign=ture; set(handles.btnmpause,string,pause,Enable,on);catch msgbox(Rrror while playing music!,NOTICING);end（3）暂停/继续功能function btnmpause

16、_Callback(hObject, eventdata, handles)% hObject handle to btnmpause (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)global player signtry if strcmp(get(handles.btnmpause,string),pause) pause(player); set(handles.

17、btnmpause,string,continue); elseif strcmp(get(handles.btnmpause,string),continue) resume(player); set(handles.btnmpause,string,pause); endcatch msgbox(sorry, there are some error while excuting the function!,NOTICING);end（4）停止播放音乐function btnmstop_Callback(hObject, eventdata, handles)% hObject handl

18、e to btnmstop (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)global player signtry stop(player); sign=false; set(handles.btnmpause,string,pause,Enable,off);catch msgbox(ERROR,NOTICING);end3）其他辅助功能（1）关闭程序：在退出程序时，

19、音乐不会自动停止，所以为了在退出程序时同时关闭音乐，才加入此功能function figure1_DeleteFcn(hObject, eventdata, handles)% hObject handle to figure1 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA) global player signtry if strcmp(sign,true) stop(

20、player); close all endcatch msgbox(sorry, there are some error while excuting the function!,NOTICING,error);end（2）异常捕捉机制try-catch由于程序功能再设计上考虑的并不是十分全面，可能会出现预料不到的错误，因此加入此功能，避免在出现未知错误时，程序崩溃。4、结果分析功能实现上看，基本上能达到预期效果，各个功能均可正常执行，在动画播放方面，有些方面还不尽如人意，比如说，由于实现了动画的可切换性 ，也就是说动画程序的独立性，使得自己编写的m文件和程序内部参数部分不一致，使得出现不同效果，比如，有时动画在设计好的GUI界面上显示，有时又以独立的窗口运行。音乐模块则与预期一致。另外，应该说是非人为因素，在动画播放的时候，添加背景音乐，此时动画会暂停，当音乐开始播放时，动画也恢复正常。从这个结果看，程序内部命令会相互影响，所以这将是我们队优化程序的一个方向。5、改进方向从程序演示过程发现以下问题，这将是本程序优化的方向。(1)回调函数之间的干扰：最明显的结果表现为，动画运行过程中，点击其他的按钮，将短时间暂停动画程序。所以如何将动画独立于GUI之外，同时又受GUI界面按钮的控制，这是程序优化重点之一。(2)动画程序编写模块：虽说本程序可以实现动