pasteimage.m

来自「matlab处理图像的一些基本方法。其中有一部分mex程序需要安装编译」· M 代码 · 共 84 行

function pasteimage(command)
%PASTEIMAGE Copy the CutPaste global variable to the specified position
%		in the current image, using the mouse.
%
% Claudio 28 Sept. 1995
%

%
% Copyright (c) 1995 by Claudio Rivetti and Mark Young
% [e-mail],    [e-mail]
%


global H I CutPaste ax l w h x y oldz oldmf olddf oldpn ss px;


if isempty(CutPaste)
  message('|    Nothing to Paste.');
  return;
end

if nargin>1
  error('Too many input arguments.');
end

if nargin==0
  command='START';
end


if strcmp(upper(command), 'START')

  if ~isimage
    setviewmode('TOPVIEW');
    showimage;
  end
  oldpn=get(gcf, 'pointer');
  oldmf=get(gcf, 'WindowButtonMotionFcn');
  olddf=get(gcf, 'WindowButtonDownFcn');
  oldz=getzoomstatus;
  setzoomstatus(0);
  ss=scansize(H);
  px=size(I,1);
  w=size(CutPaste,2);
  h=size(CutPaste,1);
  w=w*ss/px;
  h=h*ss/px;
  lx=[0 0 w w 0];
  ly=[0 h h 0 0];
  l=line(lx,ly,'erasemode','xor');
  set(gcf, 'pointer', 'fleur');
  set(gcf, 'WindowButtonMotionFcn', 'pasteimage(''MOVE'')');
  set(gcf, 'WindowButtonDownFcn', 'pasteimage(''PASTE'')');
end


if strcmp(upper(command), 'MOVE')
  p=pix2axes(get(gcf, 'currentpoint'));
  lx=[p(1)-w/2 p(1)-w/2 p(1)+w/2 p(1)+w/2 p(1)-w/2];
  ly=[p(2)-h/2 p(2)+h/2 p(2)+h/2 p(2)-h/2 p(2)-h/2];
  set(l,'xdata',lx);set(l,'ydata',ly);
end		
 
if strcmp(upper(command), 'PASTE')
  set(gcf, 'WindowButtonMotionFcn', oldmf);
  set(gcf, 'WindowButtonDownFcn', olddf);
  set(gcf, 'pointer', oldpn);
  x=get(l, 'xdata');
  y=get(l, 'ydata');
  x=ceil((x(1)-xoffset(H)) * px/ss);
  y=ceil((y(1)-yoffset(H)) * px/ss);
  delete(l);
  setzoomstatus(oldz);
  setimage(CutPaste, [x y]);
end
   

return;