Thu, 03 Mar 2022 11:42:52 +0200
extract polygon cache out of Model
/* * LDForge: LDraw parts authoring CAD * Copyright (C) 2013 - 2020 Teemu Piippo * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #pragma once #include <QAbstractListModel> #include <memory> #include "main.h" #include "header.h" #include "linetypes/object.h" #include "linetypes/metacommand.h" #include "gl/common.h" enum class HeaderProperty { Name }; class Model : public QAbstractListModel { Q_OBJECT public: class EditContext; Model(QObject* parent = nullptr); Model(const Model&) = delete; int size() const; ldraw::id_t at(int index) const; EditContext edit(); int rowCount(const QModelIndex&) const override; QVariant data(const QModelIndex& index, int role) const override; QVariant getHeaderProperty(const HeaderProperty property); QVariant getObjectProperty(const int index, const ldraw::Property property) const; template<ldraw::Property Property> ldraw::PropertyType<Property> getObjectProperty(const ldraw::id_t id) const; QModelIndex find(ldraw::id_t id) const; ldraw::id_t idAt(const QModelIndex& index) const; template<typename R> const R* get(ldraw::Id<R> id) const; template<typename R> struct Get2Result { QModelIndex index; const R* object; }; template<typename R> Get2Result<R> get2(ldraw::Id<R> id) const; template<typename R, typename Fn> void apply(Fn f) const; void save(QIODevice *device) const; ldraw::Object* operator[](int index); Q_SIGNALS: void objectAdded(int position); void objectModified(int position); void objectRemoved(ldraw::id_t id); private: using ModelObjectPointer = std::unique_ptr<ldraw::Object>; template<typename T, typename... Args> ldraw::Id<T> append(Args&&... args); void append(ModelObjectPointer&& object); template<typename T, typename... Args> ldraw::Id<T> insert(std::size_t position, Args&&... args); void remove(int position); ldraw::Object* objectAt(const QModelIndex& index); const ldraw::Object* objectAt(const QModelIndex& index) const; template<typename T> T* objectAt(ldraw::Id<T> id); template<typename T> const T* objectAt(ldraw::Id<T> id) const; void editFinished(); void objectModified(ldraw::id_t id); bool modified = false; LDHeader header; std::vector<ModelObjectPointer> body; std::map<ldraw::id_t, ldraw::Object*> objectsById; /** * @brief Amount of model edit contexts active */ int editCounter = 0; }; void makeUnofficial(Model& model); /** * @brief Calls the specified function to all matching objects in the model * @tparam R Type of LDraw line type object to filter by * @param fn Function to call. */ template<typename R, typename Fn> void Model::apply(Fn f) const { for (const ModelObjectPointer& object : this->body) { const R* subobject = dynamic_cast<const R*>(object.get()); if (subobject != nullptr) { f(subobject); } } } template<typename T, typename... Args> ldraw::Id<T> Model::append(Args&&... args) { const int position = static_cast<int>(this->body.size()); Q_EMIT beginInsertRows({}, position, position); this->body.push_back(std::make_unique<T>(args...)); ldraw::Object* pointer = this->body.back().get(); this->objectsById[pointer->id] = pointer; Q_EMIT objectAdded(static_cast<int>(this->body.size() - 1)); Q_EMIT endInsertRows(); return ldraw::Id<T>{pointer->id.value}; } template<typename T, typename... Args> ldraw::Id<T> Model::insert(const std::size_t position, Args&&... args) { Q_EMIT beginInsertRows({}, position, position); this->body.insert(std::begin(this->body) + position, std::make_unique<T>(args...)); ldraw::Object* pointer = this->body[position].get(); this->objectsById[pointer->id] = pointer; Q_EMIT objectAdded(static_cast<int>(position)); Q_EMIT endInsertRows(); return ldraw::Id<T>{pointer->id.value}; } template<typename R> const R* Model::get(ldraw::Id<R> id) const { return this->get2(id).object; } template<typename R> Model::Get2Result<R> Model::get2(const ldraw::Id<R> id) const { Get2Result<R> result; result.index = this->find(id); if (result.index.isValid()) { result.object = static_cast<const R*>(this->objectAt(result.index)); } else { result.object = nullptr; } return result; } /** * @brief Gets an object pointer by id. Used by the editing context to actually modify objects. * @param id * @return object pointer */ template<typename T> T* Model::objectAt(ldraw::Id<T> id) { return static_cast<T*>(this->objectAt(this->find(id))); } template<typename T> const T* Model::objectAt(ldraw::Id<T> id) const { return static_cast<const T*>(this->objectAt(this->find(id))); } /** * @brief Gets an object property by id * @tparam Property Property to obtain * @param id ID of object * @returns property or default value */ template<ldraw::Property Property> ldraw::PropertyType<Property> Model::getObjectProperty(const ldraw::id_t id) const { const ldraw::Object* const object = this->objectAt(id); ldraw::PropertyType<Property> result; if (object != nullptr) { result = object->getProperty<Property>(); } return result; }