gui_mesh2d.m

一个功能强大的非结构网格划分程序,可实现网格的自动剖分,及局部加密与质量控制

function varargout = GUI_Mesh2d(varargin)
% GUI_MESH2D M-file for GUI_Mesh2d.fig
%      GUI_MESH2D, by itself, creates a new GUI_MESH2D or raises the existing
%      singleton*.
%
%      H = GUI_MESH2D returns the handle to a new GUI_MESH2D or the handle to
%      the existing singleton*.
%
%      GUI_MESH2D('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in GUI_MESH2D.M with the given input arguments.
%
%      GUI_MESH2D('Property','Value',...) creates a new GUI_MESH2D or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before GUI_Mesh2d_OpeningFunction gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to GUI_Mesh2d_OpeningFcn via varargin.
%
%      *See GUI Options on GUIDE's Tools menu.  Choose "GUI allows only one
%      instance to run (singleton)".
%
% See also: GUIDE, GUIDATA, GUIHANDLES

% Edit the above text to modify the response to help GUI_Mesh2d

% Last Modified by GUIDE v2.5 24-Oct-2007 21:26:27

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @GUI_Mesh2d_OpeningFcn, ...
                   'gui_OutputFcn',  @GUI_Mesh2d_OutputFcn, ...
                   'gui_LayoutFcn',  [] , ...
                   'gui_Callback',   []);
if nargin && ischar(varargin{1})
    gui_State.gui_Callback = str2func(varargin{1});
end

if nargout
    [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});
else
    gui_mainfcn(gui_State, varargin{:});
end
% End initialization code - DO NOT EDIT


% --- Executes just before GUI_Mesh2d is made visible.
function GUI_Mesh2d_OpeningFcn(hObject, eventdata, handles, varargin)
% This function has no output args, see OutputFcn.
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% varargin   command line arguments to GUI_Mesh2d (see VARARGIN)

% Choose default command line output for GUI_Mesh2d
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes GUI_Mesh2d wait for user response (see UIRESUME)
% uiwait(handles.figure1);


% --- Outputs from this function are returned to the command line.
function varargout = GUI_Mesh2d_OutputFcn(hObject, eventdata, handles) 
% varargout  cell array for returning output args (see VARARGOUT);
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Get default command line output from handles structure
varargout{1} = handles.output;


% --------------------------------------------------------------------
function File_New_Callback(hObject, eventdata, handles)
% hObject    handle to File_New (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)


% --------------------------------------------------------------------
function File_Open_Callback(hObject, eventdata, handles)
% hObject    handle to File_Open (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)


% --------------------------------------------------------------------
function File_Import_Boundary_Callback(hObject, eventdata, handles)
%该函数用于导入王老师系统中的边界条件，这个边界用来生成计算网格
[filename, pathname] = uigetfile({'*.txt', '文本文件(*.txt)';'*.dat','文本文件(*.dat)';});
if(filename == 0)
    return;
end
filename = [pathname filename];

%读取其中的文件，并为每一段分配空间
fid=fopen(filename,'r');
fscanf(fid,'%s ',2);%先丢掉‘一般地形区域’  ‘。。。。地形’
n=fscanf(fid,'%d',1);%得到该局域的段数（由几个子区域构成）
node=[];%定义一个空的节点数组，该数组用来存储所有节点的坐标
connect=[];%各个点的连接关系
nn=1;nt=0;%nt表示现在这个线段再总结点node中开头点的索引
pn=[];%每段的点数
while(~feof(fid) && nn<=n)
    na=fscanf(fid,'%d',1);%获得每一段的点数
    connect=[connect;(nt+1:na-1+nt)',(nt+2:na+nt)'];
    np=(fscanf(fid,'%f %f',[2 na]))';
    node=[node;np];
    nn=nn+1;%这里表示高程点就不必要了，只读取边界线数据
    nt=nt+na;
    pn=[pn,nt];
end

%在该图形界面上绘制出边界线
hold on
a=0;
for i=1:n
    plot(node(a+1:pn(i),1),node(a+1:pn(i),2),'k-');
    a=a+pn(i);
end
hold off

[p,t] = mesh2d(node,connect);

% --------------------------------------------------------------------
function File_Callback(hObject, eventdata, handles)
% hObject    handle to File (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)