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// Copyright (c) 2018 GeometryFactory Sarl (France) // All rights reserved. // // This file is part of CGAL (www.cgal.org). // // $URL: https://github.com/CGAL/cgal/blob/v6.1/Three/include/CGAL/Three/Scene_item_rendering_helper.h $ // $Id: include/CGAL/Three/Scene_item_rendering_helper.h b26b07a1242 $ // SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-Commercial // // Author(s) : Maxime Gimeno #ifndef SCENE_ITEM_RENDERING_HELPER_H #define SCENE_ITEM_RENDERING_HELPER_H #include #include #ifdef demo_framework_EXPORTS # define DEMO_FRAMEWORK_EXPORT Q_DECL_EXPORT #else # define DEMO_FRAMEWORK_EXPORT Q_DECL_IMPORT #endif struct PRIV; class QMenu; class QSlider; namespace CGAL { namespace Three{ class Viewer_interface; struct Triangle_container; struct Edge_container; struct Point_container; //! //! \brief The Scene_item_rendering_helper class is a convenience class for constructing an item. //! It is more elaborated than a `Scene_item` and facilitates the process of creating an item that can //! be rendered. //! class DEMO_FRAMEWORK_EXPORT Scene_item_rendering_helper : public Scene_item { Q_OBJECT public: Scene_item_rendering_helper(); ~Scene_item_rendering_helper(); //! //! \brief The `Gl_data_name` enum is used as a flag to specify what should be //! re-computed during `computeElements()`. The flag corresponding to this enum is //! `Gl_data_names`, and multiple flags can be combined with the operator `|`. //! For instance, you can use `GEOMETRY|COLORS` as a single value. //! @todo Review Laurent Rineau We need to find a better name. 1. Do not refer to OpenGL. 2. Why "name"? //! enum Gl_data_name{ GEOMETRY = 0x1, //!< Invalidates the vertices, edges and faces. COLORS = 0x2, //!< Invalidates the color of each vertex NORMALS = 0x4, //!< Invalidate the normal of each vertex. NOT_INSTANCED = 0x8, //!< Invalidate the centers/radius of each sphere. ALL = GEOMETRY|COLORS|NORMALS|NOT_INSTANCED //!< Invalidate everything }; #ifdef DOXYGEN_RUNNING //! \brief Flag interface for Scene_item::Gl_data_name. //! \todo Review Laurent Rineau: Should be explained better. Points to `QFlags`... enum Gl_data_names{}; #endif Q_DECLARE_FLAGS(Gl_data_names, Gl_data_name) QMenu* contextMenu() override; /*! * \brief processData calls `computeElements()` * * @todo in a dedicated thread so the * application does not get stuck while the processing is performed. * Emits `dataProcessed()`. */ virtual void processData(Gl_data_names name) const; //! //! \brief setAlpha sets the integer value of the alpha channel of this item. //! Also updates the slider value. //! It must be between 0 and 255. //! \param alpha the integer value for the alpha channel. //! void setAlpha(int alpha) override; //! \brief The item's bounding box. //! //! If the Bbox has never been computed, computes it and //! saves the result for further calls. //! @returns the item's bounding box. Scene_item::Bbox bbox()const override; //! //! \brief getTriangleContainer returns the `id`-th `Triangle_container`. //! CGAL::Three::Triangle_container* getTriangleContainer(std::size_t id) const; //! //! \brief getEdgeContainer returns the `id`-th `Edge_container`. //! CGAL::Three::Edge_container* getEdgeContainer(std::size_t id) const; //! //! \brief getPointContainer returns the `id`-th `Point_container`. //! CGAL::Three::Point_container* getPointContainer(std::size_t id) const; //! //! \brief setTriangleContainer sets the `id`-th `Triangle_container` to `tc`. //! //! If `id` is bigger than the current size of the container vector, this vector is //! resized accordingly. This means that for optimization reasons, containers should be created //! decreasingly. //! void setTriangleContainer(std::size_t id, Triangle_container* tc); //! //! \brief setEdgeContainer sets the `id`-th `Edge_container` to `tc`. //! //! If `id` is bigger than the current size of the container vector, this vector is //! resized accordingly. This means that for optimization reasons, containers should be created //! decreasingly. //! void setEdgeContainer(std::size_t id, Edge_container* tc); //! //! \brief setPointContainer sets the `id`-th `Point_container` to `tc`. //! //! If `id` is bigger than the current size of the container vector, this vector is //! resized accordingly. This means that for optimization reasons, containers should be created //! decreasingly. //! void setPointContainer(std::size_t id, Point_container* tc); //! //! \brief setBuffersFilled specifies if the data should be re-computed. //! //! If called with `false`, the item rendering data will be re-computed at the next `draw()`. //! If called with `true`, the item rendering data is considered ready and will not be computed //! until `setBuffersFilled()` is called with `false` again. //! void setBuffersFilled(bool b) const; //! //! \brief getBuffersFilled returns `false` if the item rendering data needs to be re-computed., //! `true` otherwise. //! \see `setBuffersFilled()` bool getBuffersFilled() const; //! //! \brief getBuffersInit returns true if the `Vao`s of `viewer` are ready //! for rendering. //! bool getBuffersInit(Viewer_interface *viewer) const; //! //! \brief setBuffersInit specifies if the `Vbo`s need to be initialized. //! //! If called with `false`, the item `Vbo`s will be refilled at the next `draw()`. //! If called with `true`, the item `Vbo`s are considered ready and will not be refilled //! until `setBuffersInit()` is called with `false` again. //! //! This function should be called in the drawing functions, when `getBuffersFilled()` is `true`. //! void setBuffersInit(Viewer_interface *viewer, bool val) const; //! \brief the item's bounding box's diagonal length. //! //! If the diagonal's length has never been computed, computes it and //! saves the result for further calls. //! @returns the item's bounding box's diagonal length. //! @todo must replace the one from Scene_item eventually virtual double bboxDiagonal() const override; //! //! \brief newViewer adds Vaos for `viewer`. //! \param viewer the new viewer. //! void newViewer(Viewer_interface *viewer) override; //! \brief removeViewer removes the Vaos for `viewer`. //! \param viewer the viewer to be removed. void removeViewer(Viewer_interface *viewer) override; protected: //!Returns a pointer to the slider initialized in initGL(); QSlider* alphaSlider(); //!Returns`true` if `initGL()` was called for `viewer`. bool isInit(CGAL::Three::Viewer_interface* viewer) const; //!Returns the float alpha value of an item. //! This value is between 0.0f and 1.0f. float alpha() const override; /*! Fills the `Vbo`s with data. */ virtual void initializeBuffers(Viewer_interface*) const {} //!Creates the VAOs and VBOs for viewer. virtual void initGL(CGAL::Three::Viewer_interface* viewer) const; //! //! Computes the items Bbox and stores the result. Must be overridden. //!@todo must replace the one from Scene_item eventually. virtual void compute_bbox() const override = 0; //! //! \brief setBbox allows to set the Bbox in compute_bbox(); //! \param b //! void setBbox(Bbox b) const; virtual void computeElements() const {} protected: friend struct PRIV; mutable PRIV* priv; };//end Scene_item_rendering_helper }} #endif // SCENE_ITEM_RENDERING_HELPER_H