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24 | 1 | /* |
2 | * LDForge: LDraw parts authoring CAD | |
3 | * Copyright (C) 2013 - 2020 Teemu Piippo | |
4 | * | |
5 | * This program is free software: you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation, either version 3 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
17 | */ | |
18 | ||
3 | 19 | #pragma once |
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20 | #include <QAbstractListModel> |
3 | 21 | #include <memory> |
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22 | #include "basics.h" |
200 | 23 | #include "colors.h" |
24 | ||
25 | struct SubfileReference | |
26 | { | |
27 | QString name; | |
28 | glm::mat4 transformation; | |
29 | bool inverted = false; | |
30 | }; | |
31 | ||
32 | template<typename T> | |
33 | struct Colored : T | |
34 | { | |
35 | ldraw::Color color; | |
36 | }; | |
37 | ||
38 | struct Comment | |
39 | { | |
40 | QString text; | |
41 | }; | |
3 | 42 | |
200 | 43 | struct ParseError |
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44 | { |
200 | 45 | QString code; |
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46 | }; |
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47 | |
200 | 48 | struct Empty {}; |
49 | ||
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50 | template<typename T, typename R> |
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51 | struct transfer_reference |
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52 | { |
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53 | using type = std::remove_reference_t<R>; |
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54 | }; |
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55 | |
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56 | template<typename T, typename R> |
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57 | struct transfer_reference<T&, R> |
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58 | { |
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59 | using type = std::remove_reference_t<R>&; |
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60 | }; |
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61 | |
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62 | template<typename T, typename R> |
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63 | struct transfer_reference<T&&, R> |
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64 | { |
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65 | using type = std::remove_reference_t<R>&&; |
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66 | }; |
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67 | |
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68 | template<typename T, typename R> |
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69 | using transfer_reference_t = typename transfer_reference<T, R>::type; |
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70 | static_assert(std::is_same_v<transfer_reference_t<int, char>, char>); |
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71 | static_assert(std::is_same_v<transfer_reference_t<int&, char>, char&>); |
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72 | static_assert(std::is_same_v<transfer_reference_t<int&&, char>, char&&>); |
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73 | |
200 | 74 | using ModelElement = std::variant< |
75 | Colored<SubfileReference>, | |
76 | Colored<LineSegment>, | |
77 | Colored<Triangle>, | |
78 | Colored<Quadrilateral>, | |
79 | Colored<ConditionalEdge>, | |
80 | Comment, | |
81 | Empty, | |
82 | ParseError>; | |
83 | ||
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84 | using PolygonElement = Colored<std::variant< |
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85 | LineSegment, |
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86 | Triangle, |
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87 | Quadrilateral, |
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88 | ConditionalEdge>>; |
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89 | |
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90 | template<typename T> |
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91 | struct remove_color { using type = T; }; |
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92 | |
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93 | template<typename T> |
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94 | struct remove_color<Colored<T>> { using type = T; }; |
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95 | |
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96 | template<typename T> |
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97 | struct remove_color<Colored<T>&> { using type = T&; }; |
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98 | |
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99 | template<typename T> |
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100 | struct remove_color<Colored<T>&&> { using type = T&&; }; |
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101 | |
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102 | template<typename T> |
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103 | using remove_color_t = typename remove_color<T>::type; |
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104 | |
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105 | template<typename T> |
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106 | constexpr remove_color_t<T&&> extract_colored(T&& x) |
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107 | { |
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108 | return static_cast<remove_color_t<T&&>>(x); |
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109 | } |
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110 | |
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111 | template<typename Ret, typename T> |
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112 | constexpr auto visitPolygon( |
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113 | std::function<Ret(transfer_reference_t<T&&, LineSegment>)> f1, |
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114 | std::function<Ret(transfer_reference_t<T&&, Triangle>)> f2, |
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115 | std::function<Ret(transfer_reference_t<T&&, Quadrilateral>)> f3, |
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116 | std::function<Ret(transfer_reference_t<T&&, ConditionalEdge>)> f4, |
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117 | T&& element) |
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118 | { |
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119 | return std::visit(overloaded{f1, f2, f3, f4}, extract_colored(element)); |
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120 | } |
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121 | |
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122 | template<typename T, typename Fn> |
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123 | constexpr void visitPoints(T&& element, Fn func) |
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124 | { |
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125 | visitPolygon<void>( |
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126 | [&func](transfer_reference_t<T&&, LineSegment> edge) |
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127 | { |
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128 | func(edge.p1); |
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129 | func(edge.p2); |
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130 | }, |
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131 | [&func](transfer_reference_t<T&&, Triangle>& tri) |
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132 | { |
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133 | func(tri.p1); |
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134 | func(tri.p2); |
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135 | func(tri.p3); |
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136 | }, |
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137 | [&func](transfer_reference_t<T&&, Quadrilateral>& quad) |
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138 | { |
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139 | func(quad.p1); |
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140 | func(quad.p2); |
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141 | func(quad.p3); |
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142 | func(quad.p4); |
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143 | }, |
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144 | [&func](transfer_reference_t<T&&, ConditionalEdge>& cedge) |
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145 | { |
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146 | func(cedge.p1); |
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147 | func(cedge.p2); |
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148 | func(cedge.c1); |
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149 | func(cedge.c2); |
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150 | }, |
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151 | element); |
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152 | } |
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153 | |
200 | 154 | QString modelElementToString(const ModelElement& element); |
155 | struct ModelId | |
156 | { | |
157 | std::int32_t value; | |
158 | constexpr auto operator<=>(const ModelId& other) const = default; | |
159 | }; | |
160 | ||
161 | constexpr int qHash(ModelId id) | |
162 | { | |
163 | return qHash(id.value); | |
164 | } | |
165 | ||
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166 | class Model : public QAbstractListModel |
3 | 167 | { |
168 | Q_OBJECT | |
200 | 169 | struct Entry { |
170 | ModelElement data; | |
171 | ModelId id; | |
172 | }; | |
173 | std::vector<Entry> body; | |
174 | std::map<ModelId, int> positions; | |
175 | ModelId runningId = {1}; | |
3 | 176 | public: |
200 | 177 | Model(QObject* parent); |
178 | virtual ~Model(); | |
179 | ModelId append(const ModelElement& value); | |
180 | const ModelElement& at(int position) const; | |
181 | ModelId idAt(int position) const; | |
182 | void assignAt(int position, const ModelElement& element); | |
183 | std::optional<int> find(ModelId id) const; | |
184 | void remove(int index); | |
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185 | int rowCount(const QModelIndex&) const override; |
44679e468ba9
major update with many things
Teemu Piippo <teemu@hecknology.net>
parents:
6
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changeset
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186 | QVariant data(const QModelIndex& index, int role) const override; |
200 | 187 | const ModelElement& operator[](int index) const; |
188 | int size() const; | |
189 | auto operator[](int index) { | |
190 | struct { | |
191 | Model& model; | |
192 | int index; | |
193 | operator const ModelElement&() { | |
194 | return model.at(index); | |
195 | } | |
196 | auto& operator=(const ModelElement& newData) { | |
197 | model.assignAt(index, newData); | |
198 | return *this; | |
199 | } | |
200 | const auto* operator&() { | |
201 | return &(this->operator const ModelElement&()); | |
202 | } | |
203 | } result{*this, index}; | |
204 | return result; | |
205 | } | |
3 | 206 | }; |
207 | ||
151 | 208 | void save(const Model& model, QIODevice *device); |
200 | 209 | void updateHeaderNameField(Model& model, const QString &name); |