mirror of https://github.com/mosra/magnum.git
Vladimír Vondruš
14 years ago
3 changed files with 149 additions and 108 deletions
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#ifndef Magnum_SceneGraph_FeatureGroup_h |
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#define Magnum_SceneGraph_FeatureGroup_h |
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/*
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Copyright © 2010, 2011, 2012 Vladimír Vondruš <mosra@centrum.cz> |
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This file is part of Magnum. |
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Magnum is free software: you can redistribute it and/or modify |
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it under the terms of the GNU Lesser General Public License version 3 |
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only, as published by the Free Software Foundation. |
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Magnum is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU Lesser General Public License version 3 for more details. |
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*/ |
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/** @file
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* @brief Class Magnum::SceneGraph::FeatureGroup, alias Magnum::SceneGraph::FeatureGroup2D, Magnum::SceneGraph::FeatureGroup3D |
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*/ |
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#include <cstdint> |
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#include <algorithm> |
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#include <vector> |
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#include <Utility/Debug.h> |
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#include "Magnum.h" |
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namespace Magnum { namespace SceneGraph { |
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template<std::uint8_t, class, class T> class AbstractGroupedFeature; |
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/**
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@brief Group of features |
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See AbstractGroupedFeature for more information. |
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@see FeatureGroup2D, FeatureGroup3D |
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*/ |
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template<std::uint8_t dimensions, class Feature, class T = GLfloat> class FeatureGroup { |
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friend class AbstractGroupedFeature<dimensions, Feature, T>; |
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public: |
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/**
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* @brief Destructor |
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* |
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* Deletes all features belogning to this group. |
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*/ |
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inline virtual ~FeatureGroup() { |
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for(auto i: features) { |
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i->_group = nullptr; |
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delete i; |
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} |
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} |
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/** @brief Whether the group is empty */ |
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inline bool isEmpty() const { return features.empty(); } |
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/** @brief Count of features in the group */ |
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inline std::size_t size() const { return features.size(); } |
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/** @brief Feature at given index */ |
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inline Feature* operator[](std::size_t index) { |
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return features[index]; |
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} |
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/** @overload */ |
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inline const Feature* operator[](std::size_t index) const { |
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return features[index]; |
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} |
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/**
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* @brief Add feature to the group |
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* |
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* If the features is part of another group, it is removed from it. |
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*/ |
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void add(Feature* feature) { |
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/** @todo Assert the same scene for all items? -- can't easily
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watch when feature object is removed from hierarchy */ |
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/* Remove from previous group */ |
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if(feature->_group) |
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feature->_group->remove(feature); |
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/* Crossreference the feature and group together */ |
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features.push_back(feature); |
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feature->_group = this; |
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} |
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/**
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* @brief Remove feature from the group |
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* |
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* The feature must be part of the group. |
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*/ |
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void remove(Feature* feature) { |
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CORRADE_ASSERT(feature->_group == this, |
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"SceneGraph::AbstractFeatureGroup::remove(): feature is not part of this group", ); |
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/* Remove the feature and reset group pointer */ |
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features.erase(std::find(features.begin(), features.end(), feature)); |
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feature->_group = nullptr; |
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} |
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private: |
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std::vector<Feature*> features; |
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}; |
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/**
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@brief Base for two-dimensional object features |
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Convenience alternative to <tt>%FeatureGroup<2, Feature, T></tt>. See |
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AbstractGroupedFeature for more information. |
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@note Not available on GCC < 4.7. Use <tt>%FeatureGroup<2, Feature, T></tt> |
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instead. |
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@see FeatureGroup3D |
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@todoc Remove workaround when Doxygen supports alias template |
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*/ |
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#ifndef DOXYGEN_GENERATING_OUTPUT |
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#ifndef MAGNUM_GCC46_COMPATIBILITY |
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template<class Feature, class T = GLfloat> using FeatureGroup2D = FeatureGroup<2, Feature, T>; |
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#endif |
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#else |
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typedef FeatureGroup<2, Feature, T = GLfloat> FeatureGroup2D; |
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#endif |
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/**
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@brief Base for three-dimensional object features |
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Convenience alternative to <tt>%FeatureGroup<3, Feature, T></tt>. See |
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AbstractGroupedFeature for more information. |
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@note Not available on GCC < 4.7. Use <tt>%FeatureGroup<3, Feature, T></tt> |
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instead. |
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@see FeatureGroup2D |
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@todoc Remove workaround when Doxygen supports alias template |
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*/ |
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#ifndef DOXYGEN_GENERATING_OUTPUT |
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#ifndef MAGNUM_GCC46_COMPATIBILITY |
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template<class Feature, class T = GLfloat> using FeatureGroup3D = FeatureGroup<3, Feature, T>; |
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#endif |
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#else |
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typedef FeatureGroup<3, Feature, T = GLfloat> FeatureGroup3D; |
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#endif |
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}} |
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#endif |
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