yanxing.m

采用MATLAB编写B样条绘制程序

function varargout = yanxing_20042546(varargin)
%YANXING M-file for yanxing.fig
%      YANXING, by itself, creates a create YANXING or raises the existing
%      singleton*.
%
%      H = YANXING returns the handle to a create YANXING or the handle to
%      the existing singleton*.
%
%      YANXING('Property','Value',...) creates a create YANXING using the
%      given property value pairs. Unrecognized properties are passed via
%      varargin to yanxing_OpeningFcn.  This calling syntax produces a
%      warning when there is an existing singleton*.
%
%      YANXING('CALLBACK') and YANXING('CALLBACK',hObject,...) call the
%      local function named CALLBACK in YANXING.M with the given input
%      arguments.
%
%      *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 yanxing

% Last Modified by GUIDE v2.5 09-Nov-2007 15:54:34

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;

gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @yanxing_OpeningFcn, ...
                   'gui_OutputFcn',  @yanxing_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 yanxing is made visible.
function yanxing_OpeningFcn(hObject, eventdata, handles, varargin)
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);


% --- Outputs from this function are returned to the command line.
function varargout = yanxing_OutputFcn(hObject, eventdata, handles)

varargout{1} = handles.output;


% --------------------------------------------------------------------
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)



% --- Executes on button press in create.
function create_Callback(hObject, eventdata, handles)
% hObject    handle to create (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
axes(handles.axes1);
linePoint=[];
index=get(handles.style, 'value');
k=get(handles.degree, 'value');
k=k+1;
style=0;
controlPoint=handles.controlPoint;
%method=get(hObject,'method')
%deg=get(hObject,'degree')
switch index
    case 1%'均匀' 
        style=0;
    case 2%'准均匀' 
        style=1;
    case 3%'分段贝塞尔' 
        style=2;               
        if fix((length(controlPoint)-1)/k)~=(length(controlPoint)-1)/k
            warndlg('数据点数必须为次数的整数倍加1个，请重新输入!');
        end
    case 4%'非均匀' 
        style=3;        
end

linePoint=Dbordv(controlPoint,k,style);
%***************************描点********************************
   plot(controlPoint(:,1)',controlPoint(:,2)','-r');hold on
%axis manual;axis([0 50 20 50]);
   if style==0
      bb=[];j=1;
      for i=1:length(linePoint)
          if norm(linePoint(i,:))~=0
              bb(j,:)=linePoint(i,:);
              j=j+1;
          end
      end
      plot(bb(:,1)',bb(:,2)','b-');hold on    
   else
   plot(linePoint(:,1)',(linePoint(:,2))','b-');hold on
   %axis manual;axis([0 50 0 50]);
   end %endif
% --- Executes on button press in clear.

function clear_Callback(hObject, eventdata, handles)

hold off;
plot(0,0);
hold on
axis manual;
axis([0 50 0 50]);


% --- Executes on button press in point.
function point_Callback(hObject, eventdata, handles)

set(handles.create,'enable','on');
axis manual;
axis([0 50 0 50]);
hold on;%grid on
but = 1;n=0;
while but == 1
    [xi,yi,but] = ginput(1);
    plot(xi,yi,'ro');text(xi+0.2,yi+1,num2str(n));
    n = n+1;
controlPoint(n,:) = [xi,yi];
end
handles.controlPoint=controlPoint;
guidata(hObject,handles);


% --- Executes on button press in edit.
function edit_Callback(hObject, eventdata, handles)
% hObject    handle to edit (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% --- Executes on selection change in style.
function style_Callback(hObject, eventdata, handles)

% --- Executes on button press in grid.
function grid_Callback(hObject, eventdata, handles)

grid
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% --- Executes during object creation, after setting all properties.
function popupmenu1_CreateFcn(hObject, eventdata, handles)

if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end


% --- Executes on selection change in degree.
function degree_Callback(hObject, eventdata, handles)


% --- Executes during object creation, after setting all properties.
function degree_CreateFcn(hObject, eventdata, handles)

if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end


function method_CreateFcn(hObject, eventdata, handles)

% Hint: popupmenu controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end


% --------------------------------------------------------------------
function save_Callback(hObject, eventdata, handles)
% hObject    handle to save (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
file=uiputfile({'*.jpg';'*.fig'},'Save As')
%save(handles.figure1,file)


% --- Executes on button press in print.
function print_Callback(hObject, eventdata, handles)
% hObject    handle to print (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)


% --- Executes on button press in dispOrNot.
function dispOrNot_Callback(hObject, eventdata, handles)
% hObject    handle to dispOrNot (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of dispOrNot


% --------------------------------------------------------------------
function help_Callback(hObject, eventdata, handles)
% hObject    handle to help (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
helpdlg({'                           CAGD大作业程序',
'1.	先使用鼠标输入控制顶点，点描点后，左键描点，右键退出',
'2.选择控制参数，如所绘曲线的类型，次数等',
'3.使用修改可以修改控制点的位置，点修改后，用鼠标选择需要修改的点;',
'  再选择新控制点的位置，即可画出新的曲线',
'4.勾选打印参数，可以在命令窗口得到曲线的控制参数方便进一步处理!',
'由于时间仓促，可能还有一些未排除的BUG...',

});

% --------------------------------------------------------------------
function about_Callback(hObject, eventdata, handles)
% hObject    handle to about (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
helpdlg({'作者:数学2班 07110402',' 颜星(20042546)','时间:2007.11.09','  [e-mail]'});