1 | % DRAWSEG - Draws a series of line segments stored in an Nx4 array. |
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2 | % |
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3 | % Usage: drawseg(seglist, figNo, lw, col, marker); |
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4 | % |
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5 | % seglist - an Nx4 array storing line segments in the form |
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6 | % [x1 y1 x2 y2 |
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7 | % x1 y1 x2 y2 |
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8 | % . . ] etc |
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9 | % figNo - optional figure number |
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10 | % lw - optional line width |
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11 | % col - optional 3-vector specifying the colour |
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12 | % marker - optional character specifying a marker to be plotted at |
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13 | % the end of each segment, eg '*' |
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14 | % |
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15 | % |
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16 | % See also: EDGELINK, LINESEG, MAXLINEDEV, MERGESEG |
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17 | % |
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18 | |
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19 | % Copyright (c) 2000-2005 Peter Kovesi |
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20 | % School of Computer Science & Software Engineering |
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21 | % The University of Western Australia |
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22 | % http://www.csse.uwa.edu.au/ |
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23 | % |
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24 | % Permission is hereby granted, free of charge, to any person obtaining a copy |
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25 | % of this software and associated documentation files (the "Software"), to deal |
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26 | % in the Software without restriction, subject to the following conditions: |
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27 | % |
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28 | % The above copyright notice and this permission notice shall be included in |
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29 | % all copies or substantial portions of the Software. |
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30 | % |
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31 | % The Software is provided "as is", without warranty of any kind. |
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32 | |
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33 | % December 2000 Original version |
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34 | % August 2006 Added option to specify marker plotted at end points |
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35 | |
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36 | function drawseg(seglist, figNo, lw, col, marker); |
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37 | |
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38 | if nargin >= 2 |
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39 | figure(figNo); |
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40 | end |
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41 | |
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42 | if nargin < 3 |
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43 | lw = 1; |
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44 | col = [0 0 1]; |
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45 | elseif nargin < 4 |
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46 | col = [0 0 1]; |
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47 | end |
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48 | |
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49 | if nargin == 5 % A marker was specified |
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50 | plotMarkers = true; |
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51 | else |
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52 | plotMarkers = false; |
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53 | end |
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54 | |
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55 | % clf |
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56 | |
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57 | Nseg = size(seglist,1); |
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58 | |
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59 | hold on |
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60 | for s = 1:Nseg |
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61 | plot([seglist(s,1) seglist(s,3)], [seglist(s,2) seglist(s,4)],... |
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62 | 'LineWidth',lw, 'Color',col); |
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63 | if plotMarkers |
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64 | hold on |
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65 | plot([seglist(s,1) seglist(s,3)], [seglist(s,2) seglist(s,4)],marker); |
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66 | end |
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67 | end |
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68 | |
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69 | axis('equal'), axis('ij') |
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70 | |
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71 | |
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