Mercurial > hg > orthanc-stone
annotate Framework/Toolbox/Extent2D.cpp @ 111:7665ccbf33db wasm
rename Extent as Extent2D
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 14 Jun 2017 15:54:06 +0200 |
parents | Framework/Toolbox/Extent.cpp@53bd9277b025 |
children | 2eca030792aa |
rev | line source |
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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 "Extent2D.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 Extent2D::Extent2D(double x1, |
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30 double y1, |
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31 double x2, |
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32 double y2) : |
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33 empty_(false), |
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34 x1_(x1), |
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35 y1_(y1), |
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36 x2_(x2), |
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37 y2_(y2) |
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38 { |
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39 if (x1_ > x2_) |
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40 { |
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41 std::swap(x1_, x2_); |
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42 } |
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43 |
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44 if (y1_ > y2_) |
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45 { |
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46 std::swap(y1_, y2_); |
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47 } |
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48 } |
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49 |
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50 |
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51 void Extent2D::Reset() |
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52 { |
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53 empty_ = true; |
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54 x1_ = 0; |
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55 y1_ = 0; |
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56 x2_ = 0; |
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57 y2_ = 0; |
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58 } |
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59 |
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60 void Extent2D::AddPoint(double x, |
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61 double y) |
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62 { |
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63 if (empty_) |
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64 { |
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65 x1_ = x; |
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66 y1_ = y; |
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67 x2_ = x; |
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68 y2_ = y; |
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69 empty_ = false; |
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70 } |
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71 else |
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72 { |
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73 x1_ = std::min(x1_, x); |
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74 y1_ = std::min(y1_, y); |
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75 x2_ = std::max(x2_, x); |
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76 y2_ = std::max(y2_, y); |
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77 } |
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78 |
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79 assert(x1_ <= x2_ && |
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80 y1_ <= y2_); // This is the invariant of the structure |
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81 } |
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82 |
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83 |
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84 void Extent2D::Union(const Extent2D& other) |
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85 { |
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86 if (other.empty_) |
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87 { |
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88 return; |
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89 } |
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90 |
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91 if (empty_) |
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92 { |
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93 *this = other; |
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94 return; |
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95 } |
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96 |
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97 assert(!empty_); |
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98 |
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99 x1_ = std::min(x1_, other.x1_); |
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100 y1_ = std::min(y1_, other.y1_); |
99 | 101 x2_ = std::max(x2_, other.x2_); |
102 y2_ = std::max(y2_, other.y2_); | |
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103 |
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104 assert(x1_ <= x2_ && |
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105 y1_ <= y2_); // This is the invariant of the structure |
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106 } |
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107 |
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108 |
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109 bool Extent2D::IsEmpty() const |
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110 { |
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111 if (empty_) |
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112 { |
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113 return true; |
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114 } |
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115 else |
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116 { |
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117 assert(x1_ <= x2_ && |
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118 y1_ <= y2_); |
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119 return (x2_ <= x1_ + 10 * std::numeric_limits<double>::epsilon() || |
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120 y2_ <= y1_ + 10 * std::numeric_limits<double>::epsilon()); |
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
99
diff
changeset
|
121 } |
53bd9277b025
using the Extent class
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
99
diff
changeset
|
122 } |
97
d18dcc963930
separation of the renderers vs. viewport slice
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
123 } |