www.gusucode.com > 声音的处理有：LPC，FFT，共振峰，频谱源码程序 > siganlandsystemusingMatlab/SSUM/library/arrow.m
function [h,yy,zz] = arrow(varargin)
% ARROW Draw a line with an arrowhead.
%
% ARROW(Start,Stop) draws a line with an arrow from Start to Stop (points
% should be vectors of length 2 or 3, or matrices with 2 or 3
% columns), and returns the graphics handle of the arrow(s).
%
% ARROW uses the mouse (click-drag) to create an arrow.
%
% ARROW DEMO & ARROW DEMO2 show 3-D & 2-D demos of the capabilities of ARROW.
%
% ARROW may be called with a normal argument list or a property-based list.
% ARROW(Start,Stop,Length,BaseAngle,TipAngle,Width,Page,CrossDir) is
% the full normal argument list, where all but the Start and Stop
% points are optional. If you need to specify a later argument (e.g.,
% Page) but want default values of earlier ones (e.g., TipAngle),
% pass an empty matrix for the earlier ones (e.g., TipAngle=[]).
%
% ARROW('Property1',PropVal1,'Property2',PropVal2,...) creates arrows with the
% given properties, using default values for any unspecified or given as
% 'default' or NaN. Some properties used for line and patch objects are
% used in a modified fashion, others are passed directly to LINE, PATCH,
% or SET. For a detailed properties explanation, call ARROW PROPERTIES.
%
% Start The starting points. B
% Stop The end points. /|\ ^
% Length Length of the arrowhead in pixels. /|||\ |
% BaseAngle Base angle in degrees (ADE). //|||\\ L|
% TipAngle Tip angle in degrees (ABC). ///|||\\\ e|
% Width Width of the base in pixels. ////|||\\\\ n|
% Page Use hardcopy proportions. /////|D|\\\\\ g|
% CrossDir Vector || to arrowhead plane. //// ||| \\\\ t|
% NormalDir Vector out of arrowhead plane. /// ||| \\\ h|
% Ends Which end has an arrowhead. //<----->|| \\ |
% ObjectHandles Vector of handles to update. / base ||| \ V
% E angle||<-------->C
% ARROW(H,'Prop1',PropVal1,...), where H is a |||tipangle
% vector of handles to previously-created arrows |||
% and/or line objects, will update the previously- |||
% created arrows according to the current view -->|A|<-- width
% and any specified properties, and will convert
% two-point line objects to corresponding arrows. ARROW(H) will update
% the arrows if the current view has changed. Root, figure, or axes
% handles included in H are replaced by all descendant Arrow objects.
%
% A property list can follow any specified normal argument list, e.g.,
% ARROW([1 2 3],[0 0 0],36,'BaseAngle',60) creates an arrow from (1,2,3) to
% the origin, with an arrowhead of length 36 pixels and 60-degree base angle.
%
% The basic arguments or properties can generally be vectorized to create
% multiple arrows with the same call. This is done by passing a property
% with one row per arrow, or, if all arrows are to have the same property
% value, just one row may be specified.
%
% You may want to execute AXIS(AXIS) before calling ARROW so it doesn't change
% the axes on you; ARROW determines the sizes of arrow components BEFORE the
% arrow is plotted, so if ARROW changes axis limits, arrows may be malformed.
%
% This version of ARROW uses features of MATLAB 5 and is incompatible with
% earlier MATLAB versions (ARROW for MATLAB 4.2c is available separately);
% some problems with perspective plots still exist.
% Copyright (c)1995-2002, Dr. Erik A. Johnson <JohnsonE@usc.edu>, 11/15/02
% Revision history:
% 11/15/02 EAJ Accomodate how MATLAB 6.5 handles NaN and logicals
% 7/28/02 EAJ Tried (but failed) work-around for MATLAB 6.x / OpenGL bug
% if zero 'Width' or not double-ended
% 11/10/99 EAJ Add logical() to eliminate zero index problem in MATLAB 5.3.
% 11/10/99 EAJ Corrected warning if axis limits changed on multiple axes.
% 11/10/99 EAJ Update e-mail address.
% 2/10/99 EAJ Some documentation updating.
% 2/24/98 EAJ Fixed bug if Start~=Stop but both colinear with viewpoint.
% 8/14/97 EAJ Added workaround for MATLAB 5.1 scalar logical transpose bug.
% 7/21/97 EAJ Fixed a few misc bugs.
% 7/14/97 EAJ Make arrow([],'Prop',...) do nothing (no old handles)
% 6/23/97 EAJ MATLAB 5 compatible version, release.
% 5/27/97 EAJ Added Line Arrows back in. Corrected a few bugs.
% 5/26/97 EAJ Changed missing Start/Stop to mouse-selected arrows.
% 5/19/97 EAJ MATLAB 5 compatible version, beta.
% 4/13/97 EAJ MATLAB 5 compatible version, alpha.
% 1/31/97 EAJ Fixed bug with multiple arrows and unspecified Z coords.
% 12/05/96 EAJ Fixed one more bug with log plots and NormalDir specified
% 10/24/96 EAJ Fixed bug with log plots and NormalDir specified
% 11/13/95 EAJ Corrected handling for 'reverse' axis directions
% 10/06/95 EAJ Corrected occasional conflict with SUBPLOT
% 4/24/95 EAJ A major rewrite.
% Fall 94 EAJ Original code.
% Things to be done:
% - segment parsing, computing, and plotting into separate subfunctions
% - change computing from Xform to Camera paradigms
% + this will help especially with 3-D perspective plots
% + if the WarpToFill section works right, remove warning code
% + when perpsective works properly, remove perspective warning code
% - add cell property values and struct property name/values (like get/set)
% - get rid of NaN as the "default" data label
% + perhaps change userdata to a struct and don't include (or leave
% empty) the values specified as default; or use a cell containing
% an empty matrix for a default value
% - add functionality of GET to retrieve current values of ARROW properties
% Many thanks to Keith Rogers <kerog@ai.mit.com> for his many excellent
% suggestions and beta testing. Check out his shareware package MATDRAW
% (at ftp://ftp.mathworks.com/pub/contrib/v5/graphics/matdraw/) -- he has
% permission to distribute ARROW with MATDRAW.
% Permission is granted to distribute ARROW with the toolboxes for the book
% "Solving Solid Mechanics Problems with MATLAB 5", by F. Golnaraghi et al.
% (Prentice Hall, 1999).
% global variable initialization
global ARROW_PERSP_WARN ARROW_STRETCH_WARN ARROW_AXLIMITS
if isempty(ARROW_PERSP_WARN ), ARROW_PERSP_WARN =1; end;
if isempty(ARROW_STRETCH_WARN), ARROW_STRETCH_WARN=1; end;
% Handle callbacks
if (nargin>0 & isstr(varargin{1}) & strcmp(lower(varargin{1}),'callback')),
arrow_callback(varargin{2:end}); return;
end;
% Are we doing the demo?
c = sprintf('\n');
if (nargin==1 & isstr(varargin{1})),
arg1 = lower(varargin{1});
if strncmp(arg1,'prop',4), arrow_props;
elseif strncmp(arg1,'demo',4)
clf reset
demo_info = arrow_demo;
if ~strncmp(arg1,'demo2',5),
hh=arrow_demo3(demo_info);
else,
hh=arrow_demo2(demo_info);
end;
if (nargout>=1), h=hh; end;
elseif strncmp(arg1,'fixlimits',3),
arrow_fixlimits(ARROW_AXLIMITS);
ARROW_AXLIMITS=[];
elseif strncmp(arg1,'help',4),
disp(help(mfilename));
else,
error([upper(mfilename) ' got an unknown single-argument string ''' deblank(arg1) '''.']);
end;
return;
end;
% Check # of arguments
if (nargout>3), error([upper(mfilename) ' produces at most 3 output arguments.']); end;
% find first property number
firstprop = nargin+1;
for k=1:length(varargin), if ~isnumeric(varargin{k}), firstprop=k; break; end; end;
lastnumeric = firstprop-1;
% check property list
if (firstprop<=nargin),
for k=firstprop:2:nargin,
curarg = varargin{k};
if ~isstr(curarg) | sum(size(curarg)>1)>1,
error([upper(mfilename) ' requires that a property name be a single string.']);
end;
end;
if (rem(nargin-firstprop,2)~=1),
error([upper(mfilename) ' requires that the property ''' ...
varargin{nargin} ''' be paired with a property value.']);
end;
end;
% default output
if (nargout>0), h=[]; end;
if (nargout>1), yy=[]; end;
if (nargout>2), zz=[]; end;
% set values to empty matrices
start = [];
stop = [];
len = [];
baseangle = [];
tipangle = [];
wid = [];
page = [];
crossdir = [];
ends = [];
ax = [];
oldh = [];
ispatch = [];
defstart = [NaN NaN NaN];
defstop = [NaN NaN NaN];
deflen = 16;
defbaseangle = 90;
deftipangle = 16;
defwid = 0;
defpage = 0;
defcrossdir = [NaN NaN NaN];
defends = 1;
defoldh = [];
defispatch = 1;
% The 'Tag' we'll put on our arrows
ArrowTag = 'Arrow';
% check for oldstyle arguments
if (firstprop==2),
% assume arg1 is a set of handles
oldh = varargin{1}(:);
if isempty(oldh), return; end;
elseif (firstprop>9),
error([upper(mfilename) ' takes at most 8 non-property arguments.']);
elseif (firstprop>2),
s = str2mat('start','stop','len','baseangle','tipangle','wid','page','crossdir');
for k=1:firstprop-1, eval([deblank(s(k,:)) '=varargin{k};']); end;
end;
% parse property pairs
extraprops={};
for k=firstprop:2:nargin,
prop = varargin{k};
val = varargin{k+1};
prop = [lower(prop(:)') ' '];
if strncmp(prop,'start' ,5), start = val;
elseif strncmp(prop,'stop' ,4), stop = val;
elseif strncmp(prop,'len' ,3), len = val(:);
elseif strncmp(prop,'base' ,4), baseangle = val(:);
elseif strncmp(prop,'tip' ,3), tipangle = val(:);
elseif strncmp(prop,'wid' ,3), wid = val(:);
elseif strncmp(prop,'page' ,4), page = val;
elseif strncmp(prop,'cross' ,5), crossdir = val;
elseif strncmp(prop,'norm' ,4), if (isstr(val)), crossdir=val; else, crossdir=val*sqrt(-1); end;
elseif strncmp(prop,'end' ,3), ends = val;
elseif strncmp(prop,'object',6), oldh = val(:);
elseif strncmp(prop,'handle',6), oldh = val(:);
elseif strncmp(prop,'type' ,4), ispatch = val;
elseif strncmp(prop,'userd' ,5), %ignore it
else,
% make sure it is a valid patch or line property
eval('get(0,[''DefaultPatch'' varargin{k}]);err=0;','err=1;'); errstr=lasterr;
if (err), eval('get(0,[''DefaultLine'' varargin{k}]);err=0;','err=1;'); end;
if (err),
errstr(1:max(find(errstr==setstr(13)|errstr==setstr(10)))) = '';
error([upper(mfilename) ' got ' errstr]);
end;
extraprops={extraprops{:},varargin{k},val};
end;
end;
% Check if we got 'default' values
start = arrow_defcheck(start ,defstart ,'Start' );
stop = arrow_defcheck(stop ,defstop ,'Stop' );
len = arrow_defcheck(len ,deflen ,'Length' );
baseangle = arrow_defcheck(baseangle,defbaseangle,'BaseAngle' );
tipangle = arrow_defcheck(tipangle ,deftipangle ,'TipAngle' );
wid = arrow_defcheck(wid ,defwid ,'Width' );
crossdir = arrow_defcheck(crossdir ,defcrossdir ,'CrossDir' );
page = arrow_defcheck(page ,defpage ,'Page' );
ends = arrow_defcheck(ends ,defends ,'' );
oldh = arrow_defcheck(oldh ,[] ,'ObjectHandles');
ispatch = arrow_defcheck(ispatch ,defispatch ,'' );
% check transpose on arguments
[m,n]=size(start ); if any(m==[2 3])&(n==1|n>3), start = start'; end;
[m,n]=size(stop ); if any(m==[2 3])&(n==1|n>3), stop = stop'; end;
[m,n]=size(crossdir); if any(m==[2 3])&(n==1|n>3), crossdir = crossdir'; end;
% convert strings to numbers
if ~isempty(ends) & isstr(ends),
endsorig = ends;
[m,n] = size(ends);
col = lower([ends(:,1:min(3,n)) ones(m,max(0,3-n))*' ']);
ends = NaN*ones(m,1);
oo = ones(1,m);
ii=find(all(col'==['non']'*oo)'); if ~isempty(ii), ends(ii)=ones(length(ii),1)*0; end;
ii=find(all(col'==['sto']'*oo)'); if ~isempty(ii), ends(ii)=ones(length(ii),1)*1; end;
ii=find(all(col'==['sta']'*oo)'); if ~isempty(ii), ends(ii)=ones(length(ii),1)*2; end;
ii=find(all(col'==['bot']'*oo)'); if ~isempty(ii), ends(ii)=ones(length(ii),1)*3; end;
if any(isnan(ends)),
ii = min(find(isnan(ends)));
error([upper(mfilename) ' does not recognize ''' deblank(endsorig(ii,:)) ''' as a valid ''Ends'' value.']);
end;
else,
ends = ends(:);
end;
if ~isempty(ispatch) & isstr(ispatch),
col = lower(ispatch(:,1));
patchchar='p'; linechar='l'; defchar=' ';
mask = col~=patchchar & col~=linechar & col~=defchar;
if any(mask),
error([upper(mfilename) ' does not recognize ''' deblank(ispatch(min(find(mask)),:)) ''' as a valid ''Type'' value.']);
end;
ispatch = (col==patchchar)*1 + (col==linechar)*0 + (col==defchar)*defispatch;
else,
ispatch = ispatch(:);
end;
oldh = oldh(:);
% check object handles
if ~all(ishandle(oldh)), error([upper(mfilename) ' got invalid object handles.']); end;
% expand root, figure, and axes handles
if ~isempty(oldh),
ohtype = get(oldh,'Type');
mask = strcmp(ohtype,'root') | strcmp(ohtype,'figure') | strcmp(ohtype,'axes');
if any(mask),
oldh = num2cell(oldh);
for ii=find(mask)',
oldh(ii) = {findobj(oldh{ii},'Tag',ArrowTag)};
end;
oldh = cat(1,oldh{:});
if isempty(oldh), return; end; % no arrows to modify, so just leave
end;
end;
% largest argument length
[mstart,junk]=size(start); [mstop,junk]=size(stop); [mcrossdir,junk]=size(crossdir);
argsizes = [length(oldh) mstart mstop ...
length(len) length(baseangle) length(tipangle) ...
length(wid) length(page) mcrossdir length(ends) ];
args=['length(ObjectHandle) '; ...
'#rows(Start) '; ...
'#rows(Stop) '; ...
'length(Length) '; ...
'length(BaseAngle) '; ...
'length(TipAngle) '; ...
'length(Width) '; ...
'length(Page) '; ...
'#rows(CrossDir) '; ...
'#rows(Ends) '];
if (any(imag(crossdir(:))~=0)),
args(9,:) = '#rows(NormalDir) ';
end;
if isempty(oldh),
narrows = max(argsizes);
else,
narrows = length(oldh);
end;
if (narrows<=0), narrows=1; end;
% Check size of arguments
ii = find((argsizes~=0)&(argsizes~=1)&(argsizes~=narrows));
if ~isempty(ii),
s = args(ii',:);
while ((size(s,2)>1)&((abs(s(:,size(s,2)))==0)|(abs(s(:,size(s,2)))==abs(' ')))),
s = s(:,1:size(s,2)-1);
end;
s = [ones(length(ii),1)*[upper(mfilename) ' requires that '] s ...
ones(length(ii),1)*[' equal the # of arrows (' num2str(narrows) ').' c]];
s = s';
s = s(:)';
s = s(1:length(s)-1);
error(setstr(s));
end;
% check element length in Start, Stop, and CrossDir
if ~isempty(start),
[m,n] = size(start);
if (n==2),
start = [start NaN*ones(m,1)];
elseif (n~=3),
error([upper(mfilename) ' requires 2- or 3-element Start points.']);
end;
end;
if ~isempty(stop),
[m,n] = size(stop);
if (n==2),
stop = [stop NaN*ones(m,1)];
elseif (n~=3),
error([upper(mfilename) ' requires 2- or 3-element Stop points.']);
end;
end;
if ~isempty(crossdir),
[m,n] = size(crossdir);
if (n<3),
crossdir = [crossdir NaN*ones(m,3-n)];
elseif (n~=3),
if (all(imag(crossdir(:))==0)),
error([upper(mfilename) ' requires 2- or 3-element CrossDir vectors.']);
else,
error([upper(mfilename) ' requires 2- or 3-element NormalDir vectors.']);
end;
end;
end;
% fill empty arguments
if isempty(start ), start = [Inf Inf Inf]; end;
if isempty(stop ), stop = [Inf Inf Inf]; end;
if isempty(len ), len = Inf; end;
if isempty(baseangle ), baseangle = Inf; end;
if isempty(tipangle ), tipangle = Inf; end;
if isempty(wid ), wid = Inf; end;
if isempty(page ), page = Inf; end;
if isempty(crossdir ), crossdir = [Inf Inf Inf]; end;
if isempty(ends ), ends = Inf; end;
if isempty(ispatch ), ispatch = Inf; end;
% expand single-column arguments
o = ones(narrows,1);
if (size(start ,1)==1), start = o * start ; end;
if (size(stop ,1)==1), stop = o * stop ; end;
if (length(len )==1), len = o * len ; end;
if (length(baseangle )==1), baseangle = o * baseangle ; end;
if (length(tipangle )==1), tipangle = o * tipangle ; end;
if (length(wid )==1), wid = o * wid ; end;
if (length(page )==1), page = o * page ; end;
if (size(crossdir ,1)==1), crossdir = o * crossdir ; end;
if (length(ends )==1), ends = o * ends ; end;
if (length(ispatch )==1), ispatch = o * ispatch ; end;
ax = o * gca;
% if we've got handles, get the defaults from the handles
if ~isempty(oldh),
for k=1:narrows,
oh = oldh(k);
ud = get(oh,'UserData');
ax(k) = get(oh,'Parent');
ohtype = get(oh,'Type');
if strcmp(get(oh,'Tag'),ArrowTag), % if it's an arrow already
if isinf(ispatch(k)), ispatch(k)=strcmp(ohtype,'patch'); end;
% arrow UserData format: [start' stop' len base tip wid page crossdir' ends]
start0 = ud(1:3);
stop0 = ud(4:6);
if (isinf(len(k))), len(k) = ud( 7); end;
if (isinf(baseangle(k))), baseangle(k) = ud( 8); end;
if (isinf(tipangle(k))), tipangle(k) = ud( 9); end;
if (isinf(wid(k))), wid(k) = ud(10); end;
if (isinf(page(k))), page(k) = ud(11); end;
if (isinf(crossdir(k,1))), crossdir(k,1) = ud(12); end;
if (isinf(crossdir(k,2))), crossdir(k,2) = ud(13); end;
if (isinf(crossdir(k,3))), crossdir(k,3) = ud(14); end;
if (isinf(ends(k))), ends(k) = ud(15); end;
elseif strcmp(ohtype,'line')|strcmp(ohtype,'patch'), % it's a non-arrow line or patch
convLineToPatch = 1; %set to make arrow patches when converting from lines.
if isinf(ispatch(k)), ispatch(k)=convLineToPatch|strcmp(ohtype,'patch'); end;
x=get(oh,'XData'); x=x(~isnan(x(:))); if isempty(x), x=NaN; end;
y=get(oh,'YData'); y=y(~isnan(y(:))); if isempty(y), y=NaN; end;
z=get(oh,'ZData'); z=z(~isnan(z(:))); if isempty(z), z=NaN; end;
start0 = [x(1) y(1) z(1) ];
stop0 = [x(end) y(end) z(end)];
else,
error([upper(mfilename) ' cannot convert ' ohtype ' objects.']);
end;
ii=find(isinf(start(k,:))); if ~isempty(ii), start(k,ii)=start0(ii); end;
ii=find(isinf(stop( k,:))); if ~isempty(ii), stop( k,ii)=stop0( ii); end;
end;
end;
% convert Inf's to NaN's
start( isinf(start )) = NaN;
stop( isinf(stop )) = NaN;
len( isinf(len )) = NaN;
baseangle( isinf(baseangle)) = NaN;
tipangle( isinf(tipangle )) = NaN;
wid( isinf(wid )) = NaN;
page( isinf(page )) = NaN;
crossdir( isinf(crossdir )) = NaN;
ends( isinf(ends )) = NaN;
ispatch( isinf(ispatch )) = NaN;
% set up the UserData data (here so not corrupted by log10's and such)
ud = [start stop len baseangle tipangle wid page crossdir ends];
% Set Page defaults
page = ~isnan(page) & trueornan(page);
% Get axes limits, range, min; correct for aspect ratio and log scale
axm = zeros(3,narrows);
axr = zeros(3,narrows);
axrev = zeros(3,narrows);
ap = zeros(2,narrows);
xyzlog = zeros(3,narrows);
limmin = zeros(2,narrows);
limrange = zeros(2,narrows);
oldaxlims = zeros(narrows,7);
oneax = all(ax==ax(1));
if (oneax),
T = zeros(4,4);
invT = zeros(4,4);
else,
T = zeros(16,narrows);
invT = zeros(16,narrows);
end;
axnotdone = logical(ones(size(ax)));
while (any(axnotdone)),
ii = min(find(axnotdone));
curax = ax(ii);
curpage = page(ii);
% get axes limits and aspect ratio
axl = [get(curax,'XLim'); get(curax,'YLim'); get(curax,'ZLim')];
oldaxlims(min(find(oldaxlims(:,1)==0)),:) = [curax reshape(axl',1,6)];
% get axes size in pixels (points)
u = get(curax,'Units');
axposoldunits = get(curax,'Position');
really_curpage = curpage & strcmp(u,'normalized');
if (really_curpage),
curfig = get(curax,'Parent');
pu = get(curfig,'PaperUnits');
set(curfig,'PaperUnits','points');
pp = get(curfig,'PaperPosition');
set(curfig,'PaperUnits',pu);
set(curax,'Units','pixels');
curapscreen = get(curax,'Position');
set(curax,'Units','normalized');
curap = pp.*get(curax,'Position');
else,
set(curax,'Units','pixels');
curapscreen = get(curax,'Position');
curap = curapscreen;
end;
set(curax,'Units',u);
set(curax,'Position',axposoldunits);
% handle non-stretched axes position
str_stretch = { 'DataAspectRatioMode' ; ...
'PlotBoxAspectRatioMode' ; ...
'CameraViewAngleMode' };
str_camera = { 'CameraPositionMode' ; ...
'CameraTargetMode' ; ...
'CameraViewAngleMode' ; ...
'CameraUpVectorMode' };
notstretched = strcmp(get(curax,str_stretch),'manual');
manualcamera = strcmp(get(curax,str_camera),'manual');
if ~arrow_WarpToFill(notstretched,manualcamera,curax),
% give a warning that this has not been thoroughly tested
if 0 & ARROW_STRETCH_WARN,
ARROW_STRETCH_WARN = 0;
strs = {str_stretch{1:2},str_camera{:}};
strs = [char(ones(length(strs),1)*sprintf('\n ')) char(strs)]';
warning([upper(mfilename) ' may not yet work quite right ' ...
'if any of the following are ''manual'':' strs(:).']);
end;
% find the true pixel size of the actual axes
texttmp = text(axl(1,[1 2 2 1 1 2 2 1]), ...
axl(2,[1 1 2 2 1 1 2 2]), ...
axl(3,[1 1 1 1 2 2 2 2]),'');
set(texttmp,'Units','points');
textpos = get(texttmp,'Position');
delete(texttmp);
textpos = cat(1,textpos{:});
textpos = max(textpos(:,1:2)) - min(textpos(:,1:2));
% adjust the axes position
if (really_curpage),
% adjust to printed size
textpos = textpos * min(curap(3:4)./textpos);
curap = [curap(1:2)+(curap(3:4)-textpos)/2 textpos];
else,
% adjust for pixel roundoff
textpos = textpos * min(curapscreen(3:4)./textpos);
curap = [curap(1:2)+(curap(3:4)-textpos)/2 textpos];
end;
end;
if ARROW_PERSP_WARN & ~strcmp(get(curax,'Projection'),'orthographic'),
ARROW_PERSP_WARN = 0;
warning([upper(mfilename) ' does not yet work right for 3-D perspective projection.']);
end;
% adjust limits for log scale on axes
curxyzlog = [strcmp(get(curax,'XScale'),'log'); ...
strcmp(get(curax,'YScale'),'log'); ...
strcmp(get(curax,'ZScale'),'log')];
if (any(curxyzlog)),
ii = find([curxyzlog;curxyzlog]);
if (any(axl(ii)<=0)),
error([upper(mfilename) ' does not support non-positive limits on log-scaled axes.']);
else,
axl(ii) = log10(axl(ii));
end;
end;
% correct for 'reverse' direction on axes;
curreverse = [strcmp(get(curax,'XDir'),'reverse'); ...
strcmp(get(curax,'YDir'),'reverse'); ...
strcmp(get(curax,'ZDir'),'reverse')];
ii = find(curreverse);
if ~isempty(ii),
axl(ii,[1 2])=-axl(ii,[2 1]);
end;
% compute the range of 2-D values
curT = get(curax,'Xform');
lim = curT*[0 1 0 1 0 1 0 1;0 0 1 1 0 0 1 1;0 0 0 0 1 1 1 1;1 1 1 1 1 1 1 1];
lim = lim(1:2,:)./([1;1]*lim(4,:));
curlimmin = min(lim')';
curlimrange = max(lim')' - curlimmin;
curinvT = inv(curT);
if (~oneax),
curT = curT.';
curinvT = curinvT.';
curT = curT(:);
curinvT = curinvT(:);
end;
% check which arrows to which cur corresponds
ii = find((ax==curax)&(page==curpage));
oo = ones(1,length(ii));
axr(:,ii) = diff(axl')' * oo;
axm(:,ii) = axl(:,1) * oo;
axrev(:,ii) = curreverse * oo;
ap(:,ii) = curap(3:4)' * oo;
xyzlog(:,ii) = curxyzlog * oo;
limmin(:,ii) = curlimmin * oo;
limrange(:,ii) = curlimrange * oo;
if (oneax),
T = curT;
invT = curinvT;
else,
T(:,ii) = curT * oo;
invT(:,ii) = curinvT * oo;
end;
axnotdone(ii) = zeros(1,length(ii));
end;
oldaxlims(oldaxlims(:,1)==0,:)=[];
% correct for log scales
curxyzlog = xyzlog.';
ii = find(curxyzlog(:));
if ~isempty(ii),
start( ii) = real(log10(start( ii)));
stop( ii) = real(log10(stop( ii)));
if (all(imag(crossdir)==0)), % pulled (ii) subscript on crossdir, 12/5/96 eaj
crossdir(ii) = real(log10(crossdir(ii)));
end;
end;
% correct for reverse directions
ii = find(axrev.');
if ~isempty(ii),
start( ii) = -start( ii);
stop( ii) = -stop( ii);
crossdir(ii) = -crossdir(ii);
end;
% transpose start/stop values
start = start.';
stop = stop.';
% take care of defaults, page was done above
ii=find(isnan(start(:) )); if ~isempty(ii), start(ii) = axm(ii)+axr(ii)/2; end;
ii=find(isnan(stop(:) )); if ~isempty(ii), stop(ii) = axm(ii)+axr(ii)/2; end;
ii=find(isnan(crossdir(:) )); if ~isempty(ii), crossdir(ii) = zeros(length(ii),1); end;
ii=find(isnan(len )); if ~isempty(ii), len(ii) = ones(length(ii),1)*deflen; end;
ii=find(isnan(baseangle )); if ~isempty(ii), baseangle(ii) = ones(length(ii),1)*defbaseangle; end;
ii=find(isnan(tipangle )); if ~isempty(ii), tipangle(ii) = ones(length(ii),1)*deftipangle; end;
ii=find(isnan(wid )); if ~isempty(ii), wid(ii) = ones(length(ii),1)*defwid; end;
ii=find(isnan(ends )); if ~isempty(ii), ends(ii) = ones(length(ii),1)*defends; end;
% transpose rest of values
len = len.';
baseangle = baseangle.';
tipangle = tipangle.';
wid = wid.';
page = page.';
crossdir = crossdir.';
ends = ends.';
ax = ax.';
% given x, a 3xN matrix of points in 3-space;
% want to convert to X, the corresponding 4xN 2-space matrix
%
% tmp1=[(x-axm)./axr; ones(1,size(x,1))];
% if (oneax), X=T*tmp1;
% else, tmp1=[tmp1;tmp1;tmp1;tmp1]; tmp1=T.*tmp1;
% tmp2=zeros(4,4*N); tmp2(:)=tmp1(:);
% X=zeros(4,N); X(:)=sum(tmp2)'; end;
% X = X ./ (ones(4,1)*X(4,:));
% for all points with start==stop, start=stop-(verysmallvalue)*(up-direction);
ii = find(all(start==stop));
if ~isempty(ii),
% find an arrowdir vertical on screen and perpendicular to viewer
% transform to 2-D
tmp1 = [(stop(:,ii)-axm(:,ii))./axr(:,ii);ones(1,length(ii))];
if (oneax), twoD=T*tmp1;
else, tmp1=[tmp1;tmp1;tmp1;tmp1]; tmp1=T(:,ii).*tmp1;
tmp2=zeros(4,4*length(ii)); tmp2(:)=tmp1(:);
twoD=zeros(4,length(ii)); twoD(:)=sum(tmp2)'; end;
twoD=twoD./(ones(4,1)*twoD(4,:));
% move the start point down just slightly
tmp1 = twoD + [0;-1/1000;0;0]*(limrange(2,ii)./ap(2,ii));
% transform back to 3-D
if (oneax), threeD=invT*tmp1;
else, tmp1=[tmp1;tmp1;tmp1;tmp1]; tmp1=invT(:,ii).*tmp1;
tmp2=zeros(4,4*length(ii)); tmp2(:)=tmp1(:);
threeD=zeros(4,length(ii)); threeD(:)=sum(tmp2)'; end;
start(:,ii) = (threeD(1:3,:)./(ones(3,1)*threeD(4,:))).*axr(:,ii)+axm(:,ii);
end;
% compute along-arrow points
% transform Start points
tmp1=[(start-axm)./axr;ones(1,narrows)];
if (oneax), X0=T*tmp1;
else, tmp1=[tmp1;tmp1;tmp1;tmp1]; tmp1=T.*tmp1;
tmp2=zeros(4,4*narrows); tmp2(:)=tmp1(:);
X0=zeros(4,narrows); X0(:)=sum(tmp2)'; end;
X0=X0./(ones(4,1)*X0(4,:));
% transform Stop points
tmp1=[(stop-axm)./axr;ones(1,narrows)];
if (oneax), Xf=T*tmp1;
else, tmp1=[tmp1;tmp1;tmp1;tmp1]; tmp1=T.*tmp1;
tmp2=zeros(4,4*narrows); tmp2(:)=tmp1(:);
Xf=zeros(4,narrows); Xf(:)=sum(tmp2)'; end;
Xf=Xf./(ones(4,1)*Xf(4,:));
% compute pixel distance between points
D = sqrt(sum(((Xf(1:2,:)-X0(1:2,:)).*(ap./limrange)).^2));
D = D + (D==0); %eaj new 2/24/98
% compute and modify along-arrow distances
len1 = len;
len2 = len - (len.*tan(tipangle/180*pi)-wid/2).*tan((90-baseangle)/180*pi);
slen0 = zeros(1,narrows);
slen1 = len1 .* ((ends==2)|(ends==3));
slen2 = len2 .* ((ends==2)|(ends==3));
len0 = zeros(1,narrows);
len1 = len1 .* ((ends==1)|(ends==3));
len2 = len2 .* ((ends==1)|(ends==3));
% for no start arrowhead
ii=find((ends==1)&(D<len2));
if ~isempty(ii),
slen0(ii) = D(ii)-len2(ii);
end;
% for no end arrowhead
ii=find((ends==2)&(D<slen2));
if ~isempty(ii),
len0(ii) = D(ii)-slen2(ii);
end;
len1 = len1 + len0;
len2 = len2 + len0;
slen1 = slen1 + slen0;
slen2 = slen2 + slen0;
% note: the division by D below will probably not be accurate if both
% of the following are true:
% 1. the ratio of the line length to the arrowhead
% length is large
% 2. the view is highly perspective.
% compute stoppoints
tmp1=X0.*(ones(4,1)*(len0./D))+Xf.*(ones(4,1)*(1-len0./D));
if (oneax), tmp3=invT*tmp1;
else, tmp1=[tmp1;tmp1;tmp1;tmp1]; tmp1=invT.*tmp1;
tmp2=zeros(4,4*narrows); tmp2(:)=tmp1(:);
tmp3=zeros(4,narrows); tmp3(:)=sum(tmp2)'; end;
stoppoint = tmp3(1:3,:)./(ones(3,1)*tmp3(4,:)).*axr+axm;
% compute tippoints
tmp1=X0.*(ones(4,1)*(len1./D))+Xf.*(ones(4,1)*(1-len1./D));
if (oneax), tmp3=invT*tmp1;
else, tmp1=[tmp1;tmp1;tmp1;tmp1]; tmp1=invT.*tmp1;
tmp2=zeros(4,4*narrows); tmp2(:)=tmp1(:);
tmp3=zeros(4,narrows); tmp3(:)=sum(tmp2)'; end;
tippoint = tmp3(1:3,:)./(ones(3,1)*tmp3(4,:)).*axr+axm;
% compute basepoints
tmp1=X0.*(ones(4,1)*(len2./D))+Xf.*(ones(4,1)*(1-len2./D));
if (oneax), tmp3=invT*tmp1;
else, tmp1=[tmp1;tmp1;tmp1;tmp1]; tmp1=invT.*tmp1;
tmp2=zeros(4,4*narrows); tmp2(:)=tmp1(:);
tmp3=zeros(4,narrows); tmp3(:)=sum(tmp2)'; end;
basepoint = tmp3(1:3,:)./(ones(3,1)*tmp3(4,:)).*axr+axm;
% compute startpoints
tmp1=X0.*(ones(4,1)*(1-slen0./D))+Xf.*(ones(4,1)*(slen0./D));
if (oneax), tmp3=invT*tmp1;
else, tmp1=[tmp1;tmp1;tmp1;tmp1]; tmp1=invT.*tmp1;
tmp2=zeros(4,4*narrows); tmp2(:)=tmp1(:);
tmp3=zeros(4,narrows); tmp3(:)=sum(tmp2)'; end;
startpoint = tmp3(1:3,:)./(ones(3,1)*tmp3(4,:)).*axr+axm;
% compute stippoints
tmp1=X0.*(ones(4,1)*(1-slen1./D))+Xf.*(ones(4,1)*(slen1./D));
if (oneax), tmp3=invT*tmp1;
else, tmp1=[tmp1;tmp1;tmp1;tmp1]; tmp1=invT.*tmp1;
tmp2=zeros(4,4*narrows); tmp2(:)=tmp1(:);
tmp3=zeros(4,narrows); tmp3(:)=sum(tmp2)'; end;
stippoint = tmp3(1:3,:)./(ones(3,1)*tmp3(4,:)).*axr+axm;
% compute sbasepoints
tmp1=X0.*(ones(4,1)*(1-slen2./D))+Xf.*(ones(4,1)*(slen2./D));
if (oneax), tmp3=invT*tmp1;
else, tmp1=[tmp1;tmp1;tmp1;tmp1]; tmp1=invT.*tmp1;
tmp2=zeros(4,4*narrows); tmp2(:)=tmp1(:);
tmp3=zeros(4,narrows); tmp3(:)=sum(tmp2)'; end;
sbasepoint = tmp3(1:3,:)./(ones(3,1)*tmp3(4,:)).*axr+axm;
% compute cross-arrow directions for arrows with NormalDir specified
if (any(imag(crossdir(:))~=0)),
ii = find(any(imag(crossdir)~=0));
crossdir(:,ii) = cross((stop(:,ii)-start(:,ii))./axr(:,ii), ...
imag(crossdir(:,ii))).*axr(:,ii);
end;
% compute cross-arrow directions
basecross = crossdir + basepoint;
tipcross = crossdir + tippoint;
sbasecross = crossdir + sbasepoint;
stipcross = crossdir + stippoint;
ii = find(all(crossdir==0)|any(isnan(crossdir)));
if ~isempty(ii),
numii = length(ii);
% transform start points
tmp1 = [basepoint(:,ii) tippoint(:,ii) sbasepoint(:,ii) stippoint(:,ii)];
tmp1 = (tmp1-axm(:,[ii ii ii ii])) ./ axr(:,[ii ii ii ii]);
tmp1 = [tmp1; ones(1,4*numii)];
if (oneax), X0=T*tmp1;
else, tmp1=[tmp1;tmp1;tmp1;tmp1]; tmp1=T(:,[ii ii ii ii]).*tmp1;
tmp2=zeros(4,16*numii); tmp2(:)=tmp1(:);
X0=zeros(4,4*numii); X0(:)=sum(tmp2)'; end;
X0=X0./(ones(4,1)*X0(4,:));
% transform stop points
tmp1 = [(2*stop(:,ii)-start(:,ii)-axm(:,ii))./axr(:,ii);ones(1,numii)];
tmp1 = [tmp1 tmp1 tmp1 tmp1];
if (oneax), Xf=T*tmp1;
else, tmp1=[tmp1;tmp1;tmp1;tmp1]; tmp1=T(:,[ii ii ii ii]).*tmp1;
tmp2=zeros(4,16*numii); tmp2(:)=tmp1(:);
Xf=zeros(4,4*numii); Xf(:)=sum(tmp2)'; end;
Xf=Xf./(ones(4,1)*Xf(4,:));
% compute perpendicular directions
pixfact = ((limrange(1,ii)./limrange(2,ii)).*(ap(2,ii)./ap(1,ii))).^2;
pixfact = [pixfact pixfact pixfact pixfact];
pixfact = [pixfact;1./pixfact];
[dummyval,jj] = max(abs(Xf(1:2,:)-X0(1:2,:)));
jj1 = ((1:4)'*ones(1,length(jj))==ones(4,1)*jj);
jj2 = ((1:4)'*ones(1,length(jj))==ones(4,1)*(3-jj));
jj3 = jj1(1:2,:);
Xf(jj1)=Xf(jj1)+(Xf(jj1)-X0(jj1)==0); %eaj new 2/24/98
Xp = X0;
Xp(jj2) = X0(jj2) + ones(sum(jj2(:)),1);
Xp(jj1) = X0(jj1) - (Xf(jj2)-X0(jj2))./(Xf(jj1)-X0(jj1)) .* pixfact(jj3);
% inverse transform the cross points
if (oneax), Xp=invT*Xp;
else, tmp1=[Xp;Xp;Xp;Xp]; tmp1=invT(:,[ii ii ii ii]).*tmp1;
tmp2=zeros(4,16*numii); tmp2(:)=tmp1(:);
Xp=zeros(4,4*numii); Xp(:)=sum(tmp2)'; end;
Xp=(Xp(1:3,:)./(ones(3,1)*Xp(4,:))).*axr(:,[ii ii ii ii])+axm(:,[ii ii ii ii]);
basecross(:,ii) = Xp(:,0*numii+(1:numii));
tipcross(:,ii) = Xp(:,1*numii+(1:numii));
sbasecross(:,ii) = Xp(:,2*numii+(1:numii));
stipcross(:,ii) = Xp(:,3*numii+(1:numii));
end;
% compute all points
% compute start points
axm11 = [axm axm axm axm axm axm axm axm axm axm axm];
axr11 = [axr axr axr axr axr axr axr axr axr axr axr];
st = [stoppoint tippoint basepoint sbasepoint stippoint startpoint stippoint sbasepoint basepoint tippoint stoppoint];
tmp1 = (st - axm11) ./ axr11;
tmp1 = [tmp1; ones(1,size(tmp1,2))];
if (oneax), X0=T*tmp1;
else, tmp1=[tmp1;tmp1;tmp1;tmp1]; tmp1=[T T T T T T T T T T T].*tmp1;
tmp2=zeros(4,44*narrows); tmp2(:)=tmp1(:);
X0=zeros(4,11*narrows); X0(:)=sum(tmp2)'; end;
X0=X0./(ones(4,1)*X0(4,:));
% compute stop points
tmp1 = ([start tipcross basecross sbasecross stipcross stop stipcross sbasecross basecross tipcross start] ...
- axm11) ./ axr11;
tmp1 = [tmp1; ones(1,size(tmp1,2))];
if (oneax), Xf=T*tmp1;
else, tmp1=[tmp1;tmp1;tmp1;tmp1]; tmp1=[T T T T T T T T T T T].*tmp1;
tmp2=zeros(4,44*narrows); tmp2(:)=tmp1(:);
Xf=zeros(4,11*narrows); Xf(:)=sum(tmp2)'; end;
Xf=Xf./(ones(4,1)*Xf(4,:));
% compute lengths
len0 = len.*((ends==1)|(ends==3)).*tan(tipangle/180*pi);
slen0 = len.*((ends==2)|(ends==3)).*tan(tipangle/180*pi);
le = [zeros(1,narrows) len0 wid/2 wid/2 slen0 zeros(1,narrows) -slen0 -wid/2 -wid/2 -len0 zeros(1,narrows)];
aprange = ap./limrange;
aprange = [aprange aprange aprange aprange aprange aprange aprange aprange aprange aprange aprange];
D = sqrt(sum(((Xf(1:2,:)-X0(1:2,:)).*aprange).^2));
Dii=find(D==0); if ~isempty(Dii), D=D+(D==0); le(Dii)=zeros(1,length(Dii)); end; %should fix DivideByZero warnings
tmp1 = X0.*(ones(4,1)*(1-le./D)) + Xf.*(ones(4,1)*(le./D));
% inverse transform
if (oneax), tmp3=invT*tmp1;
else, tmp1=[tmp1;tmp1;tmp1;tmp1]; tmp1=[invT invT invT invT invT invT invT invT invT invT invT].*tmp1;
tmp2=zeros(4,44*narrows); tmp2(:)=tmp1(:);
tmp3=zeros(4,11*narrows); tmp3(:)=sum(tmp2)'; end;
pts = tmp3(1:3,:)./(ones(3,1)*tmp3(4,:)) .* axr11 + axm11;
% correct for ones where the crossdir was specified
ii = find(~(all(crossdir==0)|any(isnan(crossdir))));
if ~isempty(ii),
D1 = [pts(:,1*narrows+ii)-pts(:,9*narrows+ii) ...
pts(:,2*narrows+ii)-pts(:,8*narrows+ii) ...
pts(:,3*narrows+ii)-pts(:,7*narrows+ii) ...
pts(:,4*narrows+ii)-pts(:,6*narrows+ii) ...
pts(:,6*narrows+ii)-pts(:,4*narrows+ii) ...
pts(:,7*narrows+ii)-pts(:,3*narrows+ii) ...
pts(:,8*narrows+ii)-pts(:,2*narrows+ii) ...
pts(:,9*narrows+ii)-pts(:,1*narrows+ii)]/2;
ii = ii'*ones(1,8) + ones(length(ii),1)*[1:4 6:9]*narrows;
ii = ii(:)';
pts(:,ii) = st(:,ii) + D1;
end;
% readjust for reverse directions
iicols=(1:narrows)'; iicols=iicols(:,ones(1,11)); iicols=iicols(:).';
tmp1=axrev(:,iicols);
ii = find(tmp1(:)); if ~isempty(ii), pts(ii)=-pts(ii); end;
% readjust for log scale on axes
tmp1=xyzlog(:,iicols);
ii = find(tmp1(:)); if ~isempty(ii), pts(ii)=10.^pts(ii); end;
% compute the x,y,z coordinates of the patches;
ii = narrows*(0:10)'*ones(1,narrows) + ones(11,1)*(1:narrows);
ii = ii(:)';
x = zeros(11,narrows);
y = zeros(11,narrows);
z = zeros(11,narrows);
x(:) = pts(1,ii)';
y(:) = pts(2,ii)';
z(:) = pts(3,ii)';
% do the output
if (nargout<=1),
% % create or modify the patches
newpatch = trueornan(ispatch) & (isempty(oldh)|~strcmp(get(oldh,'Type'),'patch'));
newline = ~trueornan(ispatch) & (isempty(oldh)|~strcmp(get(oldh,'Type'),'line'));
if isempty(oldh), H=zeros(narrows,1); else, H=oldh; end;
% % make or modify the arrows
for k=1:narrows,
if all(isnan(ud(k,[3 6])))&arrow_is2DXY(ax(k)), zz=[]; else, zz=z(:,k); end;
% work around a MATLAB 6.x OpenGL bug -- 7/28/02
xx=x(:,k); yy=y(:,k);
mask=any([ones(1,2+size(zz,2));diff([xx yy zz],[],1)],2);
xx=xx(mask); yy=yy(mask); if ~isempty(zz), zz=zz(mask); end;
% plot the patch or line
xyz = {'XData',xx,'YData',yy,'ZData',zz,'Tag',ArrowTag};
if newpatch(k)|newline(k),
if newpatch(k),
H(k) = patch(xyz{:});
else,
H(k) = line(xyz{:});
end;
if ~isempty(oldh), arrow_copyprops(oldh(k),H(k)); end;
else,
if ispatch(k), xyz={xyz{:},'CData',[]}; end;
set(H(k),xyz{:});
end;
end;
if ~isempty(oldh), delete(oldh(oldh~=H)); end;
% % additional properties
set(H,'Clipping','off');
set(H,{'UserData'},num2cell(ud,2));
if (length(extraprops)>0), set(H,extraprops{:}); end;
% handle choosing arrow Start and/or Stop locations if unspecified
[H,oldaxlims,errstr] = arrow_clicks(H,ud,x,y,z,ax,oldaxlims);
if ~isempty(errstr), error([upper(mfilename) ' got ' errstr]); end;
% set the output
if (nargout>0), h=H; end;
% make sure the axis limits did not change
if isempty(oldaxlims),
ARROW_AXLIMITS = [];
else,
lims = get(oldaxlims(:,1),{'XLim','YLim','ZLim'})';
lims = reshape(cat(2,lims{:}),6,size(lims,2));
mask = arrow_is2DXY(oldaxlims(:,1));
oldaxlims(mask,6:7) = lims(5:6,mask)';
ARROW_AXLIMITS = oldaxlims(find(any(oldaxlims(:,2:7)'~=lims)),:);
if ~isempty(ARROW_AXLIMITS),
warning(arrow_warnlimits(ARROW_AXLIMITS,narrows));
end;
end;
else,
% don't create the patch, just return the data
h=x;
yy=y;
zz=z;
end;
function out = arrow_defcheck(in,def,prop)
% check if we got 'default' values
out = in;
if ~isstr(in), return; end;
if size(in,1)==1 & strncmp(lower(in),'def',3),
out = def;
elseif ~isempty(prop),
error([upper(mfilename) ' does not recognize ''' in(:)' ''' as a valid ''' prop ''' string.']);
end;
function [H,oldaxlims,errstr] = arrow_clicks(H,ud,x,y,z,ax,oldaxlims)
% handle choosing arrow Start and/or Stop locations if necessary
errstr = '';
if isempty(H)|isempty(ud)|isempty(x), return; end;
% determine which (if any) need Start and/or Stop
needStart = all(isnan(ud(:,1:3)'))';
needStop = all(isnan(ud(:,4:6)'))';
mask = any(needStart|needStop);
if ~any(mask), return; end;
ud(~mask,:)=[]; ax(:,~mask)=[];
x(:,~mask)=[]; y(:,~mask)=[]; z(:,~mask)=[];
% make them invisible for the time being
set(H,'Visible','off');
% save the current axes and limits modes; set to manual for the time being
oldAx = gca;
limModes=get(ax(:),{'XLimMode','YLimMode','ZLimMode'});
set(ax(:),{'XLimMode','YLimMode','ZLimMode'},{'manual','manual','manual'});
% loop over each arrow that requires attention
jj = find(mask);
for ii=1:length(jj),
h = H(jj(ii));
axes(ax(ii));
% figure out correct call
if needStart(ii), prop='Start'; else, prop='Stop'; end;
[wasInterrupted,errstr] = arrow_click(needStart(ii)&needStop(ii),h,prop,ax(ii));
% handle errors and control-C
if wasInterrupted,
delete(H(jj(ii:end)));
H(jj(ii:end))=[];
oldaxlims(jj(ii:end),:)=[];
break;
end;
end;
% restore the axes and limit modes
axes(oldAx);
set(ax(:),{'XLimMode','YLimMode','ZLimMode'},limModes);
function [wasInterrupted,errstr] = arrow_click(lockStart,H,prop,ax)
% handle the clicks for one arrow
fig = get(ax,'Parent');
% save some things
oldFigProps = {'Pointer','WindowButtonMotionFcn','WindowButtonUpFcn'};
oldFigValue = get(fig,oldFigProps);
oldArrowProps = {'EraseMode'};
oldArrowValue = get(H,oldArrowProps);
set(H,'EraseMode','background'); %because 'xor' makes shaft invisible unless Width>1
global ARROW_CLICK_H ARROW_CLICK_PROP ARROW_CLICK_AX ARROW_CLICK_USE_Z
ARROW_CLICK_H=H; ARROW_CLICK_PROP=prop; ARROW_CLICK_AX=ax;
ARROW_CLICK_USE_Z=~arrow_is2DXY(ax)|~arrow_planarkids(ax);
set(fig,'Pointer','crosshair');
% set up the WindowButtonMotion so we can see the arrow while moving around
set(fig,'WindowButtonUpFcn','set(gcf,''WindowButtonUpFcn'','''')', ...
'WindowButtonMotionFcn','');
if ~lockStart,
set(H,'Visible','on');
set(fig,'WindowButtonMotionFcn',[mfilename '(''callback'',''motion'');']);
end;
% wait for the button to be pressed
[wasKeyPress,wasInterrupted,errstr] = arrow_wfbdown(fig);
% if we wanted to click-drag, set the Start point
if lockStart & ~wasInterrupted,
pt = arrow_point(ARROW_CLICK_AX,ARROW_CLICK_USE_Z);
feval(mfilename,H,'Start',pt,'Stop',pt);
set(H,'Visible','on');
ARROW_CLICK_PROP='Stop';
set(fig,'WindowButtonMotionFcn',[mfilename '(''callback'',''motion'');']);
% wait for the mouse button to be released
eval('waitfor(fig,''WindowButtonUpFcn'','''');','wasInterrupted=1;');
if wasInterrupted, errstr=lasterr; end;
end;
if ~wasInterrupted, feval(mfilename,'callback','motion'); end;
% restore some things
set(gcf,oldFigProps,oldFigValue);
set(H,oldArrowProps,oldArrowValue);
function arrow_callback(varargin)
% handle redrawing callbacks
if nargin==0, return; end;
str = varargin{1};
if ~isstr(str), error([upper(mfilename) ' got an invalid Callback command.']); end;
s = lower(str);
if strcmp(s,'motion'),
% motion callback
global ARROW_CLICK_H ARROW_CLICK_PROP ARROW_CLICK_AX ARROW_CLICK_USE_Z
feval(mfilename,ARROW_CLICK_H,ARROW_CLICK_PROP,arrow_point(ARROW_CLICK_AX,ARROW_CLICK_USE_Z));
drawnow;
else,
error([upper(mfilename) ' does not recognize ''' str(:).' ''' as a valid Callback option.']);
end;
function out = arrow_point(ax,use_z)
% return the point on the given axes
if nargin==0, ax=gca; end;
if nargin<2, use_z=~arrow_is2DXY(ax)|~arrow_planarkids(ax); end;
out = get(ax,'CurrentPoint');
out = out(1,:);
if ~use_z, out=out(1:2); end;
function [wasKeyPress,wasInterrupted,errstr] = arrow_wfbdown(fig)
% wait for button down ignoring object ButtonDownFcn's
if nargin==0, fig=gcf; end;
errstr = '';
% save ButtonDownFcn values
objs = findobj(fig);
buttonDownFcns = get(objs,'ButtonDownFcn');
mask=~strcmp(buttonDownFcns,''); objs=objs(mask); buttonDownFcns=buttonDownFcns(mask);
set(objs,'ButtonDownFcn','');
% save other figure values
figProps = {'KeyPressFcn','WindowButtonDownFcn'};
figValue = get(fig,figProps);
% do the real work
set(fig,'KeyPressFcn','set(gcf,''KeyPressFcn'','''',''WindowButtonDownFcn'','''');', ...
'WindowButtonDownFcn','set(gcf,''WindowButtonDownFcn'','''')');
lasterr('');
wasInterrupted=0; eval('waitfor(fig,''WindowButtonDownFcn'','''');','wasInterrupted=1;');
wasKeyPress = ~wasInterrupted & strcmp(get(fig,'KeyPressFcn'),'');
if wasInterrupted, errstr=lasterr; end;
% restore ButtonDownFcn and other figure values
set(objs,'ButtonDownFcn',buttonDownFcns);
set(fig,figProps,figValue);
function [out,is2D] = arrow_is2DXY(ax)
% check if axes are 2-D X-Y plots
% may not work for modified camera angles, etc.
out = logical(zeros(size(ax))); % 2-D X-Y plots
is2D = out; % any 2-D plots
views = get(ax(:),{'View'});
views = cat(1,views{:});
out(:) = abs(views(:,2))==90;
is2D(:) = out(:) | all(rem(views',90)==0)';
function out = arrow_planarkids(ax)
% check if axes descendents all have empty ZData (lines,patches,surfaces)
out = logical(ones(size(ax)));
allkids = get(ax(:),{'Children'});
for k=1:length(allkids),
kids = get([findobj(allkids{k},'flat','Type','line')
findobj(allkids{k},'flat','Type','patch')
findobj(allkids{k},'flat','Type','surface')],{'ZData'});
for j=1:length(kids),
if ~isempty(kids{j}), out(k)=logical(0); break; end;
end;
end;
function arrow_fixlimits(axlimits)
% reset the axis limits as necessary
if isempty(axlimits), disp([upper(mfilename) ' does not remember any axis limits to reset.']); end;
for k=1:size(axlimits,1),
if any(get(axlimits(k,1),'XLim')~=axlimits(k,2:3)), set(axlimits(k,1),'XLim',axlimits(k,2:3)); end;
if any(get(axlimits(k,1),'YLim')~=axlimits(k,4:5)), set(axlimits(k,1),'YLim',axlimits(k,4:5)); end;
if any(get(axlimits(k,1),'ZLim')~=axlimits(k,6:7)), set(axlimits(k,1),'ZLim',axlimits(k,6:7)); end;
end;
function out = arrow_WarpToFill(notstretched,manualcamera,curax)
% check if we are in "WarpToFill" mode.
out = strcmp(get(curax,'WarpToFill'),'on');
% 'WarpToFill' is undocumented, so may need to replace this by
% out = ~( any(notstretched) & any(manualcamera) );
function out = arrow_warnlimits(axlimits,narrows)
% create a warning message if we've changed the axis limits
msg = '';
switch (size(axlimits,1))
case 1, msg='';
case 2, msg='on two axes ';
otherwise, msg='on several axes ';
end;
msg = [upper(mfilename) ' changed the axis limits ' msg ...
'when adding the arrow'];
if (narrows>1), msg=[msg 's']; end;
out = [msg '.' sprintf('\n') ' Call ' upper(mfilename) ...
' FIXLIMITS to reset them now.'];
function arrow_copyprops(fm,to)
% copy line properties to patches
props = {'EraseMode','LineStyle','LineWidth','Marker','MarkerSize',...
'MarkerEdgeColor','MarkerFaceColor','ButtonDownFcn', ...
'Clipping','DeleteFcn','BusyAction','HandleVisibility', ...
'Selected','SelectionHighlight','Visible'};
lineprops = {'Color', props{:}};
patchprops = {'EdgeColor',props{:}};
patch2props = {'FaceColor',patchprops{:}};
fmpatch = strcmp(get(fm,'Type'),'patch');
topatch = strcmp(get(to,'Type'),'patch');
set(to( fmpatch& topatch),patch2props,get(fm( fmpatch& topatch),patch2props)); %p->p
set(to(~fmpatch&~topatch),lineprops, get(fm(~fmpatch&~topatch),lineprops )); %l->l
set(to( fmpatch&~topatch),lineprops, get(fm( fmpatch&~topatch),patchprops )); %p->l
set(to(~fmpatch& topatch),patchprops, get(fm(~fmpatch& topatch),lineprops) ,'FaceColor','none'); %l->p
function arrow_props
% display further help info about ARROW properties
c = sprintf('\n');
disp([c ...
'ARROW Properties: Default values are given in [square brackets], and other' c ...
' acceptable equivalent property names are in (parenthesis).' c c ...
' Start The starting points. For N arrows, B' c ...
' this should be a Nx2 or Nx3 matrix. /|\ ^' c ...
' Stop The end points. For N arrows, this /|||\ |' c ...
' should be a Nx2 or Nx3 matrix. //|||\\ L|' c ...
' Length Length of the arrowhead (in pixels on ///|||\\\ e|' c ...
' screen, points on a page). [16] (Len) ////|||\\\\ n|' c ...
' BaseAngle Angle (degrees) of the base angle /////|D|\\\\\ g|' c ...
' ADE. For a simple stick arrow, use //// ||| \\\\ t|' c ...
' BaseAngle=TipAngle. [90] (Base) /// ||| \\\ h|' c ...
' TipAngle Angle (degrees) of tip angle ABC. //<----->|| \\ |' c ...
' [16] (Tip) / base ||| \ V' c ...
' Width Width of the base in pixels. Not E angle ||<-------->C' c ...
' the ''LineWidth'' prop. [0] (Wid) |||tipangle' c ...
' Page If provided, non-empty, and not NaN, |||' c ...
' this causes ARROW to use hardcopy |||' c ...
' rather than onscreen proportions. A' c ...
' This is important if screen aspect --> <-- width' c ...
' ratio and hardcopy aspect ratio are ----CrossDir---->' c ...
' vastly different. []' c...
' CrossDir A vector giving the direction towards which the fletches' c ...
' on the arrow should go. [computed such that it is perpen-' c ...
' dicular to both the arrow direction and the view direction' c ...
' (i.e., as if it was pasted on a normal 2-D graph)] (Note' c ...
' that CrossDir is a vector. Also note that if an axis is' c ...
' plotted on a log scale, then the corresponding component' c ...
' of CrossDir must also be set appropriately, i.e., to 1 for' c ...
' no change in that direction, >1 for a positive change, >0' c ...
' and <1 for negative change.)' c ...
' NormalDir A vector normal to the fletch direction (CrossDir is then' c ...
' computed by the vector cross product [Line]x[NormalDir]). []' c ...
' (Note that NormalDir is a vector. Unlike CrossDir,' c ...
' NormalDir is used as is regardless of log-scaled axes.)' c ...
' Ends Set which end has an arrowhead. Valid values are ''none'',' c ...
' ''stop'', ''start'', and ''both''. [''stop''] (End)' c...
' ObjectHandles Vector of handles to previously-created arrows to be' c ...
' updated or line objects to be converted to arrows.' c ...
' [] (Object,Handle)' c ]);
function out = arrow_demo
% demo
% create the data
[x,y,z] = peaks;
[ddd,out.iii]=max(z(:));
out.axlim = [min(x(:)) max(x(:)) min(y(:)) max(y(:)) min(z(:)) max(z(:))];
% modify it by inserting some NaN's
[m,n] = size(z);
m = floor(m/2);
n = floor(n/2);
z(1:m,1:n) = NaN*ones(m,n);
% graph it
clf('reset');
out.hs=surf(x,y,z);
out.x=x; out.y=y; out.z=z;
xlabel('x'); ylabel('y');
function h = arrow_demo3(in)
% set the view
axlim = in.axlim;
axis(axlim);
zlabel('z');
%set(in.hs,'FaceColor','interp');
view(viewmtx(-37.5,30,20));
title(['Demo of the capabilities of the ARROW function in 3-D']);
% Normal blue arrow
h1 = feval(mfilename,[axlim(1) axlim(4) 4],[-.8 1.2 4], ...
'EdgeColor','b','FaceColor','b');
% Normal white arrow, clipped by the surface
h2 = feval(mfilename,axlim([1 4 6]),[0 2 4]);
t=text(-2.4,2.7,7.7,'arrow clipped by surf');
% Baseangle<90
h3 = feval(mfilename,[3 .125 3.5],[1.375 0.125 3.5],30,50);
t2=text(3.1,.125,3.5,'local maximum');
% Baseangle<90, fill and edge colors different
h4 = feval(mfilename,axlim(1:2:5)*.5,[0 0 0],36,60,25, ...
'EdgeColor','b','FaceColor','c');
t3=text(axlim(1)*.5,axlim(3)*.5,axlim(5)*.5-.75,'origin');
set(t3,'HorizontalAlignment','center');
% Baseangle>90, black fill
h5 = feval(mfilename,[-2.9 2.9 3],[-1.3 .4 3.2],30,120,[],6, ...
'EdgeColor','r','FaceColor','k','LineWidth',2);
% Baseangle>90, no fill
h6 = feval(mfilename,[-2.9 2.9 1.3],[-1.3 .4 1.5],30,120,[],6, ...
'EdgeColor','r','FaceColor','none','LineWidth',2);
% Stick arrow
h7 = feval(mfilename,[-1.6 -1.65 -6.5],[0 -1.65 -6.5],[],16,16);
t4=text(-1.5,-1.65,-7.25,'global mininum');
set(t4,'HorizontalAlignment','center');
% Normal, black fill
h8 = feval(mfilename,[-1.4 0 -7.2],[-1.4 0 -3],'FaceColor','k');
t5=text(-1.5,0,-7.75,'local minimum');
set(t5,'HorizontalAlignment','center');
% Gray fill, crossdir specified, 'LineStyle' --
h9 = feval(mfilename,[-3 2.2 -6],[-3 2.2 -.05],36,[],27,6,[],[0 -1 0], ...
'EdgeColor','k','FaceColor',.75*[1 1 1],'LineStyle','--');
% a series of normal arrows, linearly spaced, crossdir specified
h10y=(0:4)'/3;
h10 = feval(mfilename,[-3*ones(size(h10y)) h10y -6.5*ones(size(h10y))], ...
[-3*ones(size(h10y)) h10y -.05*ones(size(h10y))], ...
12,[],[],[],[],[0 -1 0]);
% a series of normal arrows, linearly spaced
h11x=(1:.33:2.8)';
h11 = feval(mfilename,[h11x -3*ones(size(h11x)) 6.5*ones(size(h11x))], ...
[h11x -3*ones(size(h11x)) -.05*ones(size(h11x))]);
% series of magenta arrows, radially oriented, crossdir specified
h12x=2; h12y=-3; h12z=axlim(5)/2; h12xr=1; h12zr=h12z; ir=.15;or=.81;
h12t=(0:11)'/6*pi;
h12 = feval(mfilename, ...
[h12x+h12xr*cos(h12t)*ir h12y*ones(size(h12t)) ...
h12z+h12zr*sin(h12t)*ir],[h12x+h12xr*cos(h12t)*or ...
h12y*ones(size(h12t)) h12z+h12zr*sin(h12t)*or], ...
10,[],[],[],[], ...
[-h12xr*sin(h12t) zeros(size(h12t)) h12zr*cos(h12t)],...
'FaceColor','none','EdgeColor','m');
% series of normal arrows, tangentially oriented, crossdir specified
or13=.91; h13t=(0:.5:12)'/6*pi;
locs = [h12x+h12xr*cos(h13t)*or13 h12y*ones(size(h13t)) h12z+h12zr*sin(h13t)*or13];
h13 = feval(mfilename,locs(1:end-1,:),locs(2:end,:),6);
% arrow with no line ==> oriented downwards
h14 = feval(mfilename,[3 3 .100001],[3 3 .1],30);
t6=text(3,3,3.6,'no line'); set(t6,'HorizontalAlignment','center');
% arrow with arrowheads at both ends
h15 = feval(mfilename,[-.5 -3 -3],[1 -3 -3],'Ends','both','FaceColor','g', ...
'Length',20,'Width',3,'CrossDir',[0 0 1],'TipAngle',25);
h=[h1;h2;h3;h4;h5;h6;h7;h8;h9;h10;h11;h12;h13;h14;h15];
function h = arrow_demo2(in)
axlim = in.axlim;
dolog = 1;
if (dolog), set(in.hs,'YData',10.^get(in.hs,'YData')); end;
shading('interp');
view(2);
title(['Demo of the capabilities of the ARROW function in 2-D']);
hold on; [C,H]=contour(in.x,in.y,in.z,20,'-'); hold off;
for k=H',
set(k,'ZData',(axlim(6)+1)*ones(size(get(k,'XData'))),'Color','k');
if (dolog), set(k,'YData',10.^get(k,'YData')); end;
end;
if (dolog), axis([axlim(1:2) 10.^axlim(3:4)]); set(gca,'YScale','log');
else, axis(axlim(1:4)); end;
% Normal blue arrow
start = [axlim(1) axlim(4) axlim(6)+2];
stop = [in.x(in.iii) in.y(in.iii) axlim(6)+2];
if (dolog), start(:,2)=10.^start(:,2); stop(:,2)=10.^stop(:,2); end;
h1 = feval(mfilename,start,stop,'EdgeColor','b','FaceColor','b');
% three arrows with varying fill, width, and baseangle
start = [-3 -3 10; -3 -1.5 10; -1.5 -3 10];
stop = [-.03 -.03 10; -.03 -1.5 10; -1.5 -.03 10];
if (dolog), start(:,2)=10.^start(:,2); stop(:,2)=10.^stop(:,2); end;
h2 = feval(mfilename,start,stop,24,[90;60;120],[],[0;0;4],'Ends',str2mat('both','stop','stop'));
set(h2(2),'EdgeColor',[0 .35 0],'FaceColor',[0 .85 .85]);
set(h2(3),'EdgeColor','r','FaceColor',[1 .5 1]);
h=[h1;h2];
function out = trueornan(x)
if isempty(x),
out=x;
else,
out = isnan(x);
out(~out) = x(~out);
end;