Mercurial > hg > orthanc-stone

annotate OrthancStone/Sources/Toolbox/Extent2D.cpp @ 1598:8563ea5d8ae4

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relicensing some files, cf. osimis bm26 and chu agreement on 2020-05-20
author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 26 Oct 2020 20:49:28 +0100
parents 4fb8fdf03314
children b7630b1a0253
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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) 2017-2020 Osimis S.A., 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 Lesser 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 * Lesser 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 Lesser General Public
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18 * License along with this program. If not, see
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19 * <http://www.gnu.org/licenses/>.
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20 **/
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21
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22
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23 #include "Extent2D.h"
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24
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25 #include <algorithm>
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26 #include <cassert>
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27 #include <limits>
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28
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29 namespace OrthancStone
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30 {
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31 Extent2D::Extent2D(double x1,
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32 double y1,
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33 double x2,
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34 double y2) :
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35 empty_(false),
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36 x1_(x1),
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37 y1_(y1),
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38 x2_(x2),
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39 y2_(y2)
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40 {
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41 if (x1_ > x2_)
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42 {
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43 std::swap(x1_, x2_);
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44 }
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45
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46 if (y1_ > y2_)
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47 {
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48 std::swap(y1_, y2_);
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49 }
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50 }
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51
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52
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53 void Extent2D::Reset()
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54 {
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55 empty_ = true;
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56 x1_ = 0;
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57 y1_ = 0;
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58 x2_ = 0;
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59 y2_ = 0;
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60 }
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61
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62 void Extent2D::AddPoint(double x,
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63 double y)
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64 {
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65 if (empty_)
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66 {
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67 x1_ = x;
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68 y1_ = y;
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69 x2_ = x;
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70 y2_ = y;
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71 empty_ = false;
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72 }
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73 else
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74 {
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75 x1_ = std::min(x1_, x);
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76 y1_ = std::min(y1_, y);
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77 x2_ = std::max(x2_, x);
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78 y2_ = std::max(y2_, y);
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79 }
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80
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81 assert(x1_ <= x2_ &&
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82 y1_ <= y2_); // This is the invariant of the structure
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83 }
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84
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85
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86 void Extent2D::Union(const Extent2D& other)
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87 {
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88 if (other.empty_)
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89 {
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90 return;
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91 }
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92
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93 if (empty_)
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94 {
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95 *this = other;
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96 return;
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97 }
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98
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99 assert(!empty_);
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100
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101 x1_ = std::min(x1_, other.x1_);
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102 y1_ = std::min(y1_, other.y1_);
99
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103 x2_ = std::max(x2_, other.x2_);
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104 y2_ = std::max(y2_, other.y2_);
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105
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106 assert(x1_ <= x2_ &&
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107 y1_ <= y2_); // This is the invariant of the structure
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108 }
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109
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110
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111 bool Extent2D::IsEmpty() const
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112 {
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113 if (empty_)
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114 {
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115 return true;
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116 }
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117 else
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118 {
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119 assert(x1_ <= x2_ &&
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120 y1_ <= y2_);
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121 return (x2_ <= x1_ + 10 * std::numeric_limits<double>::epsilon() ||
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122 y2_ <= y1_ + 10 * std::numeric_limits<double>::epsilon());
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123 }
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124 }
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125
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126
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127 bool Extent2D::Contains(double x,
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128 double y) const
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129 {
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130 if (empty_)
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131 {
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132 return false;
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133 }
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134 else
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135 {
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136 return (x >= x1_ && x <= x2_ &&
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137 y >= y1_ && y <= y2_);
62964bfbbc00 Extent2D::Contains
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 135
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138 }
62964bfbbc00 Extent2D::Contains
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 135
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139 }
97
d18dcc963930 separation of the renderers vs. viewport slice
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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140 }