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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd"><html><head> <title>Description of drawDisk</title> <meta name="keywords" content="drawDisk"> <meta name="description" content="drawDisk - draws a solid disk into a 2d image."> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <meta name="generator" content="m2html © 2003 Guillaume Flandin"> <meta name="robots" content="index, follow"> <link type="text/css" rel="stylesheet" href="../m2html.css"></head><body><a name="_top"></a><div><a href="../index.html">Home</a> > <a href="#">mfiles</a> > drawDisk.m</div><!--<table width="100%"><tr><td align="left"><a href="../index.html"><img alt="<" border="0" src="../left.png"> Master index</a></td><td align="right"><a href="index.html">Index for .\mfiles <img alt=">" border="0" src="../right.png"></a></td></tr></table>--><h1>drawDisk</h1><h2><a name="_name"></a>PURPOSE <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2><div class="box"><strong>drawDisk - draws a solid disk into a 2d image.</strong></div><h2><a name="_synopsis"></a>SYNOPSIS <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2><div class="box"><strong>function resultMap = drawDisk(bgMap,center,radius,value) </strong></div><h2><a name="_description"></a>DESCRIPTION <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2><div class="fragment"><pre class="comment"> drawDisk - draws a solid disk into a 2d image.
resultMap = drawDisk(bgMap,center,radius,value)
Draws a solid disk with radius 'radius' around 'center'
into the background map 'bgMap' and fills it
with 'value'.
Returns a map structure if bgMap is given as a map structure.
Returns a 2d array if bgMap is given as a 2d array.
See also <a href="plotSalientLocation.html" class="code" title="function plotSalientLocation(winner,lastWinner,img,params,varargin)">plotSalientLocation</a>.</pre></div><!-- crossreference --><h2><a name="_cross"></a>CROSS-REFERENCE INFORMATION <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>This function calls:<ul style="list-style-image:url(../matlabicon.gif)"></ul>This function is called by:<ul style="list-style-image:url(../matlabicon.gif)"><li><a href="plotSalientLocation.html" class="code" title="function plotSalientLocation(winner,lastWinner,img,params,varargin)">plotSalientLocation</a> plotSalientLocation - plots the attended location into an existing figure.</li></ul><!-- crossreference --><h2><a name="_source"></a>SOURCE CODE <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2><div class="fragment"><pre>0001 <span class="comment">% drawDisk - draws a solid disk into a 2d image.</span>0002 <span class="comment">%</span>0003 <span class="comment">% resultMap = drawDisk(bgMap,center,radius,value)</span>0004 <span class="comment">% Draws a solid disk with radius 'radius' around 'center'</span>0005 <span class="comment">% into the background map 'bgMap' and fills it</span>0006 <span class="comment">% with 'value'.</span>0007 <span class="comment">% Returns a map structure if bgMap is given as a map structure.</span>0008 <span class="comment">% Returns a 2d array if bgMap is given as a 2d array.</span>0009 <span class="comment">%</span>0010 <span class="comment">% See also plotSalientLocation.</span>0011 0012 <span class="comment">% This file is part of the SaliencyToolbox - Copyright (C) 2006-2007</span>0013 <span class="comment">% by Dirk B. Walther and the California Institute of Technology.</span>0014 <span class="comment">% See the enclosed LICENSE.TXT document for the license agreement.</span>0015 <span class="comment">% More information about this project is available at:</span>0016 <span class="comment">% http://www.saliencytoolbox.net</span>0017 0018 <a name="_sub0" href="#_subfunctions" class="code">function resultMap = drawDisk(bgMap,center,radius,value)</a>0019 0020 <span class="keyword">if</span> isstruct(bgMap)0021 bg = bgMap.data;0022 <span class="keyword">else</span>0023 bg = bgMap;0024 <span class="keyword">end</span>0025 0026 <span class="comment">% create the disk</span>0027 [xx,yy] = meshgrid(-radius:radius);0028 disk = (xx.^2 + yy.^2 <= radius^2);0029 0030 <span class="comment">% need to clip the top?</span>0031 tb = center(1) - radius; td = 1;0032 <span class="keyword">if</span> (tb < 1)0033 td = 2 - tb;0034 tb = 1;0035 <span class="keyword">end</span>0036 0037 <span class="comment">% need to clip the bottom?</span>0038 bb = center(1) + radius; bd = size(disk,2);0039 <span class="keyword">if</span> (bb > size(bg,1))0040 bd = bd - (bb - size(bg,1));0041 bb = size(bg,1);0042 <span class="keyword">end</span>0043 0044 <span class="comment">% need to clip left?</span>0045 lb = center(2) - radius; ld = 1;0046 <span class="keyword">if</span> (lb < 1)0047 ld = 2 - lb;0048 lb = 1;0049 <span class="keyword">end</span>0050 0051 <span class="comment">% need to clip right?</span>0052 rb = center(2) + radius; rd = size(disk,2);0053 <span class="keyword">if</span> (rb > size(bg,2))0054 rd = rd - (rb - size(bg,2));0055 rb = size(bg,2);0056 <span class="keyword">end</span>0057 0058 <span class="comment">% draw the disk into the result</span>0059 result = bg;0060 cutRes = result(tb:bb,lb:rb);0061 cutDisk = disk(td:bd,ld:rd);0062 cutRes(cutDisk) = value;0063 result(tb:bb,lb:rb) = cutRes;0064 0065 <span class="keyword">if</span> isstruct(bgMap)0066 resultMap = bgMap;0067 resultMap.data = result;0068 resultMap.label = [resultMap.label <span class="string">' disk'</span>];0069 <span class="keyword">else</span>0070 resultMap = result;0071 <span class="keyword">end</span></pre></div><hr><address>Generated on Fri 07-Sep-2007 14:42:18 by <strong><a href="http://www.artefact.tk/software/matlab/m2html/">m2html</a></strong> © 2003</address></body></html>⌨️ 快捷键说明
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