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annotate Framework/Toolbox/Extent.cpp @ 99:efd9ef2b67f1 wasm

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 30 May 2017 21:08:31 +0200
parents d18dcc963930
children 53bd9277b025
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017 Osimis, Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Affero General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #include "Extent.h"
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23
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24 #include <algorithm>
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25 #include <cassert>
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26
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27 namespace OrthancStone
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28 {
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29 void Extent::Reset()
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30 {
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31 empty_ = true;
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32 x1_ = 0;
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33 y1_ = 0;
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34 x2_ = 0;
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35 y2_ = 0;
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36 }
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37
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38 void Extent::AddPoint(double x,
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39 double y)
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40 {
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41 if (empty_)
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42 {
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43 x1_ = x;
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44 y1_ = y;
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45 x2_ = x;
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46 y2_ = y;
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47 empty_ = false;
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48 }
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49 else
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50 {
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51 x1_ = std::min(x1_, x);
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52 y1_ = std::min(y1_, y);
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53 x2_ = std::max(x2_, x);
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54 y2_ = std::max(y2_, y);
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55 }
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56
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57 assert(x1_ <= x2_ &&
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58 y1_ <= y2_); // This is the invariant of the structure
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59 }
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60
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61
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62 void Extent::Union(const Extent& other)
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63 {
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64 if (other.IsEmpty())
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65 {
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66 return;
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67 }
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68
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69 if (IsEmpty())
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70 {
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71 *this = other;
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72 return;
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73 }
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74
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75 assert(!IsEmpty());
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76
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77 x1_ = std::min(x1_, other.x1_);
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78 y1_ = std::min(y1_, other.y1_);
99
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79 x2_ = std::max(x2_, other.x2_);
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80 y2_ = std::max(y2_, other.y2_);
97
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81
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82 assert(x1_ <= x2_ &&
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83 y1_ <= y2_); // This is the invariant of the structure
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84 }
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85
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86 }