Mercurial > hg > camir-aes2014
diff toolboxes/FullBNT-1.0.7/GraphViz/arrow.m @ 0:e9a9cd732c1e tip
first hg version after svn
| author | wolffd |
|---|---|
| date | Tue, 10 Feb 2015 15:05:51 +0000 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/toolboxes/FullBNT-1.0.7/GraphViz/arrow.m Tue Feb 10 15:05:51 2015 +0000 @@ -0,0 +1,1333 @@ +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)1995-1997, Erik A. Johnson <johnsone@uiuc.edu>, 8/14/97 + +% Revision history: +% 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.edu> for his many excellent +% suggestions and beta testing. Check out his shareware package MATDRAW. +% He has permission to distribute ARROW with MATDRAW. + +% 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))&(page); +if isnan(page) + page = 0; +end + +% 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)); +% 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,:); + 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 + if isnan(ispatch), ispatch =0; end + newpatch = ispatch & (isempty(oldh)|~strcmp(get(oldh,'Type'),'patch')); + newline = ~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; + xyz = {'XData',x(:,k),'YData',y(:,k),'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 = 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)==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];