144 lines
3.7 KiB
C++
144 lines
3.7 KiB
C++
/* Copyright (c) 2018-2020, Arm Limited and Contributors
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 the "License";
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <algorithm>
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#include <memory>
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#include <string>
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#include <typeindex>
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#include <unordered_map>
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#include <vector>
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#include "scene_graph/components/light.h"
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#include "scene_graph/components/texture.h"
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namespace vkb
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{
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namespace sg
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{
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class Node;
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class Component;
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class SubMesh;
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/// @brief A collection of nodes organized in a tree structure.
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/// It can contain more than one root node.
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class Scene
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{
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public:
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Scene() = default;
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Scene(const std::string &name);
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void set_name(const std::string &name);
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const std::string &get_name() const;
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void set_nodes(std::vector<std::unique_ptr<Node>> &&nodes);
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void add_node(std::unique_ptr<Node> &&node);
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void add_child(Node &child);
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std::unique_ptr<Component> get_model(uint32_t index = 0);
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void add_component(std::unique_ptr<Component> &&component);
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void add_component(std::unique_ptr<Component> &&component, Node &node);
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/**
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* @brief Set list of components for the given type
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* @param type_info The type of the component
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* @param components The list of components (retained)
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*/
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void set_components(const std::type_index &type_info, std::vector<std::unique_ptr<Component>> &&components);
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/**
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* @brief Set list of components casted from the given template type
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*/
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template <class T>
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void set_components(std::vector<std::unique_ptr<T>> &&components)
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{
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std::vector<std::unique_ptr<Component>> result(components.size());
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std::transform(components.begin(), components.end(), result.begin(),
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[](std::unique_ptr<T> &component) -> std::unique_ptr<Component> {
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return std::unique_ptr<Component>(std::move(component));
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});
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set_components(typeid(T), std::move(result));
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}
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/**
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* @brief Clears a list of components
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*/
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template <class T>
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void clear_components()
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{
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set_components(typeid(T), {});
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}
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/**
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* @return List of pointers to components casted to the given template type
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*/
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template <class T>
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std::vector<T *> get_components() const
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{
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std::vector<T *> result;
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if (has_component(typeid(T)))
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{
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auto &scene_components = get_components(typeid(T));
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result.resize(scene_components.size());
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std::transform(scene_components.begin(), scene_components.end(), result.begin(),
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[](const std::unique_ptr<Component> &component) -> T * {
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return dynamic_cast<T *>(component.get());
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});
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}
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return result;
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}
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/**
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* @return List of components for the given type
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*/
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const std::vector<std::unique_ptr<Component>> &get_components(const std::type_index &type_info) const;
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template <class T>
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bool has_component() const
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{
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return has_component(typeid(T));
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}
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bool has_component(const std::type_index &type_info) const;
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Node *find_node(const std::string &name);
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void set_root_node(Node &node);
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Node &get_root_node();
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private:
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std::string name;
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/// List of all the nodes
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std::vector<std::unique_ptr<Node>> nodes;
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Node *root{nullptr};
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std::unordered_map<std::type_index, std::vector<std::unique_ptr<Component>>> components;
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};
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} // namespace sg
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} // namespace vkb
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