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function [out1,out2,out3] = ginput2(arg1)
%GINPUT Graphical input from mouse.
% [X,Y] = GINPUT(N) gets N points from the current axes and returns
% the X- and Y-coordinates in length N vectors X and Y. The cursor
% can be positioned using a mouse (or by using the Arrow Keys on some
% systems). Data points are entered by pressing a mouse button
% or any key on the keyboard except carriage return, which terminates
% the input before N points are entered.
%
% [X,Y] = GINPUT gathers an unlimited number of points until the
% return key is pressed.
%
% [X,Y,BUTTON] = GINPUT(N) returns a third result, BUTTON, that
% contains a vector of integers specifying which mouse button was
% used (1,2,3 from left) or ASCII numbers if a key on the keyboard
% was used.
% Copyright (c) 1984-96 by The MathWorks, Inc.
% $Revision: 5.18 $ $Date: 1996/11/10 17:48:08 $
% Fixed version by Jean-Yves Bouguet to have a cross instead of 2 lines
% More visible for images
P = NaN*ones(16,16);
P(1:15,1:15) = 2*ones(15,15);
P(2:14,2:14) = ones(13,13);
P(3:13,3:13) = NaN*ones(11,11);
P(6:10,6:10) = 2*ones(5,5);
P(7:9,7:9) = 1*ones(3,3);
out1 = []; out2 = []; out3 = []; y = [];
c = computer;
if ~strcmp(c(1:2),'PC') & ~strcmp(c(1:2),'MA')
tp = get(0,'TerminalProtocol');
else
tp = 'micro';
end
if ~strcmp(tp,'none') & ~strcmp(tp,'x') & ~strcmp(tp,'micro'),
if nargout == 1,
if nargin == 1,
eval('out1 = trmginput(arg1);');
else
eval('out1 = trmginput;');
end
elseif nargout == 2 | nargout == 0,
if nargin == 1,
eval('[out1,out2] = trmginput(arg1);');
else
eval('[out1,out2] = trmginput;');
end
if nargout == 0
out1 = [ out1 out2 ];
end
elseif nargout == 3,
if nargin == 1,
eval('[out1,out2,out3] = trmginput(arg1);');
else
eval('[out1,out2,out3] = trmginput;');
end
end
else
fig = gcf;
figure(gcf);
if nargin == 0
how_many = -1;
b = [];
else
how_many = arg1;
b = [];
if isstr(how_many) ...
| size(how_many,1) ~= 1 | size(how_many,2) ~= 1 ...
| ~(fix(how_many) == how_many) ...
| how_many < 0
error('Requires a positive integer.')
end
if how_many == 0
ptr_fig = 0;
while(ptr_fig ~= fig)
ptr_fig = get(0,'PointerWindow');
end
scrn_pt = get(0,'PointerLocation');
loc = get(fig,'Position');
pt = [scrn_pt(1) - loc(1), scrn_pt(2) - loc(2)];
out1 = pt(1); y = pt(2);
elseif how_many < 0
error('Argument must be a positive integer.')
end
end
pointer = get(gcf,'pointer');
set(gcf,'Pointer','custom','PointerShapeCData',P,'PointerShapeHotSpot',[8,8]);
%set(gcf,'pointer','crosshair');
fig_units = get(fig,'units');
char = 0;
while how_many ~= 0
% Use no-side effect WAITFORBUTTONPRESS
waserr = 0;
eval('keydown = wfbp;', 'waserr = 1;');
if(waserr == 1)
if(ishandle(fig))
set(fig,'pointer',pointer,'units',fig_units);
error('Interrupted');
else
error('Interrupted by figure deletion');
end
end
ptr_fig = get(0,'CurrentFigure');
if(ptr_fig == fig)
if keydown
char = get(fig, 'CurrentCharacter');
button = abs(get(fig, 'CurrentCharacter'));
scrn_pt = get(0, 'PointerLocation');
set(fig,'units','pixels')
loc = get(fig, 'Position');
pt = [scrn_pt(1) - loc(1), scrn_pt(2) - loc(2)];
set(fig,'CurrentPoint',pt);
else
button = get(fig, 'SelectionType');
if strcmp(button,'open')
button = 1; %b(length(b));
elseif strcmp(button,'normal')
button = 1;
elseif strcmp(button,'extend')
button = 2;
elseif strcmp(button,'alt')
button = 3;
else
error('Invalid mouse selection.')
end
end
pt = get(gca, 'CurrentPoint');
how_many = how_many - 1;
if(char == 13) % & how_many ~= 0)
% if the return key was pressed, char will == 13,
% and that's our signal to break out of here whether
% or not we have collected all the requested data
% points.
% If this was an early breakout, don't include
% the <Return> key info in the return arrays.
% We will no longer count it if it's the last input.
break;
end
out1 = [out1;pt(1,1)];
y = [y;pt(1,2)];
b = [b;button];
end
end
set(fig,'pointer',pointer,'units',fig_units);
if nargout > 1
out2 = y;
if nargout > 2
out3 = b;
end
else
out1 = [out1 y];
end
end
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
function key = wfbp
%WFBP Replacement for WAITFORBUTTONPRESS that has no side effects.
% Remove figure button functions
fprops = {'windowbuttonupfcn','buttondownfcn', ...
'windowbuttondownfcn','windowbuttonmotionfcn'};
fig = gcf;
fvals = get(fig,fprops);
set(fig,fprops,{'','','',''})
% Remove all other buttondown functions
ax = findobj(fig,'type','axes');
if isempty(ax)
ch = {};
else
ch = get(ax,{'Children'});
end
for i=1:length(ch),
ch{i} = ch{i}(:)';
end
h = [ax(:)',ch{:}];
vals = get(h,{'buttondownfcn'});
mt = repmat({''},size(vals));
set(h,{'buttondownfcn'},mt);
% Now wait for that buttonpress, and check for error conditions
waserr = 0;
eval(['if nargout==0,', ...
' waitforbuttonpress,', ...
'else,', ...
' keydown = waitforbuttonpress;',...
'end' ], 'waserr = 1;');
% Put everything back
if(ishandle(fig))
set(fig,fprops,fvals)
set(h,{'buttondownfcn'},vals)
end
if(waserr == 1)
error('Interrupted');
end
if nargout>0, key = keydown; end
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%