MRPT
2.0.1
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This class allows the user to create, load, save, and render 3D scenes using OpenGL primitives.
The class can be understood as a program to be run over OpenGL, containing a sequence of viewport definitions, rendering primitives, etc...
It can contain from 1 up to any number of Viewports, each one associated a set of OpenGL objects and, optionally, a preferred camera position. Both orthogonal (2D/3D) and projection camera models can be used for each viewport independently, greatly increasing the possibilities of rendered scenes.
An object of COpenGLScene always contains at least one viewport (utils::COpenGLViewport), named "main". Optionally, any number of other viewports may exist. Viewports are referenced by their names, case-sensitive strings. Each viewport contains a different 3D scene (i.e. they render different objects), though a mechanism exist to share the same 3D scene by a number of viewports so memory is not wasted replicating the same objects (see COpenGLViewport::setCloneView ).
The main rendering method, COpenGLScene::render(), assumes a viewport has been set-up for the entire target window. That method will internally make the required calls to opengl for creating the additional viewports. Note that only the depth buffer is cleared by default for each (non-main) viewport, to allow transparencies. This can be disabled by the approppriate member in COpenGLViewport.
An object COpenGLScene can be saved to a ".3Dscene" file using CFileOutputStream, for posterior visualization from the standalone application SceneViewer. It can be also displayed in real-time using gui::CDisplayWindow3D.
Definition at line 56 of file COpenGLScene.h.
#include <mrpt/opengl/COpenGLScene.h>
Public Types | |
using | TListViewports = std::vector< COpenGLViewport::Ptr > |
Public Member Functions | |
COpenGLScene () | |
~COpenGLScene () override | |
COpenGLScene & | operator= (const COpenGLScene &obj) |
COpenGLScene (const COpenGLScene &obj) | |
template<class T > | |
void | insertCollection (const T &objs, const std::string &vpn=std::string("main")) |
Inserts a set of objects into the scene, in the given viewport ("main" by default). More... | |
void | insert (const CRenderizable::Ptr &newObject, const std::string &viewportName=std::string("main")) |
Insert a new object into the scene, in the given viewport (by default, into the "main" viewport). More... | |
template<class T_it > | |
void | insert (const T_it &begin, const T_it &end, const std::string &vpn=std::string("main")) |
Inserts a set of objects into the scene, in the given viewport ("main" by default). More... | |
COpenGLViewport::Ptr | createViewport (const std::string &viewportName) |
Creates a new viewport, adding it to the scene and returning a pointer to the new object. More... | |
COpenGLViewport::Ptr | getViewport (const std::string &viewportName=std::string("main")) const |
Returns the viewport with the given name, or nullptr if it does not exist; note that the default viewport is named "main" and initially occupies the entire rendering area. More... | |
const TListViewports & | viewports () const |
void | render () const |
Render this scene. More... | |
size_t | viewportsCount () const |
void | clear (bool createMainViewport=true) |
Clear the list of objects and viewports in the scene, deleting objects' memory, and leaving just the default viewport with the default values. More... | |
void | enableFollowCamera (bool enabled) |
If disabled (default), the SceneViewer application will ignore the camera of the "main" viewport and keep the viewport selected by the user by hand; otherwise, the camera in the "main" viewport prevails. More... | |
bool | followCamera () const |
Return the value of "followCamera". More... | |
CRenderizable::Ptr | getByName (const std::string &str, const std::string &viewportName=std::string("main")) |
Returns the first object with a given name, or nullptr (an empty smart pointer) if not found. More... | |
template<typename T > | |
T::Ptr | getByClass (size_t ith=0) const |
Returns the i'th object of a given class (or of a descendant class), or nullptr (an empty smart pointer) if not found. More... | |
void | removeObject (const CRenderizable::Ptr &obj, const std::string &viewportName=std::string("main")) |
Removes the given object from the scene (it also deletes the object to free its memory). More... | |
void | initializeTextures () |
Initializes all textures in the scene (See opengl::CTexturedPlane::initializeTextures) More... | |
void | dumpListOfObjects (std::vector< std::string > &lst) |
Retrieves a list of all objects in text form. More... | |
bool | saveToFile (const std::string &fil) const |
Saves the scene to a 3Dscene file, loadable by the application SceneViewer3D. More... | |
bool | loadFromFile (const std::string &fil) |
Loads the scene from a 3Dscene file, the format used by the application SceneViewer3D. More... | |
bool | traceRay (const mrpt::poses::CPose3D &o, double &dist) const |
Traces a ray. More... | |
void | getBoundingBox (mrpt::math::TPoint3D &bb_min, mrpt::math::TPoint3D &bb_max, const std::string &vpn=std::string("main")) const |
Evaluates the bounding box of the scene in the given viewport (default: "main"). More... | |
template<typename FUNCTOR > | |
void | visitAllObjects (FUNCTOR functor) const |
Recursive depth-first visit all objects in all viewports of the scene, calling the user-supplied function The passed function must accept only one argument of type "const
mrpt::opengl::CRenderizable::Ptr &". More... | |
void | unloadShaders () |
Ensure all shaders are unloaded in all viewports. More... | |
void | freeOpenGLResources () |
Ensure all OpenGL buffers are destroyed. More... | |
virtual mxArray * | writeToMatlab () const |
Introduces a pure virtual method responsible for writing to a mxArray Matlab object, typically a MATLAB struct whose contents are documented in each derived class. More... | |
RTTI classes and functions for polymorphic hierarchies | |
mrpt::rtti::CObject::Ptr | duplicateGetSmartPtr () const |
Makes a deep copy of the object and returns a smart pointer to it. More... | |
Protected Member Functions | |
CSerializable virtual methods | |
uint8_t | serializeGetVersion () const override |
Must return the current versioning number of the object. More... | |
void | serializeTo (mrpt::serialization::CArchive &out) const override |
Pure virtual method for writing (serializing) to an abstract archive. More... | |
void | serializeFrom (mrpt::serialization::CArchive &in, uint8_t serial_version) override |
Pure virtual method for reading (deserializing) from an abstract archive. More... | |
CSerializable virtual methods | |
virtual void | serializeTo (CSchemeArchiveBase &out) const |
Virtual method for writing (serializing) to an abstract schema based archive. More... | |
virtual void | serializeFrom (CSchemeArchiveBase &in) |
Virtual method for reading (deserializing) from an abstract schema based archive. More... | |
Static Protected Member Functions | |
template<typename FUNCTOR > | |
static void | internal_visitAllObjects (FUNCTOR functor, const CRenderizable::Ptr &o) |
Protected Attributes | |
bool | m_followCamera {false} |
TListViewports | m_viewports |
The list of viewports, indexed by name. More... | |
RTTI stuff | |
using | Ptr = std::shared_ptr< mrpt::opengl ::COpenGLScene > |
using | ConstPtr = std::shared_ptr< const mrpt::opengl ::COpenGLScene > |
using | UniquePtr = std::unique_ptr< mrpt::opengl ::COpenGLScene > |
using | ConstUniquePtr = std::unique_ptr< const mrpt::opengl ::COpenGLScene > |
static const mrpt::rtti::TRuntimeClassId | runtimeClassId |
static constexpr const char * | className = "mrpt::opengl" "::" "COpenGLScene" |
static const mrpt::rtti::TRuntimeClassId * | _GetBaseClass () |
static constexpr auto | getClassName () |
static const mrpt::rtti::TRuntimeClassId & | GetRuntimeClassIdStatic () |
static std::shared_ptr< CObject > | CreateObject () |
template<typename... Args> | |
static Ptr | Create (Args &&... args) |
template<typename Alloc , typename... Args> | |
static Ptr | CreateAlloc (const Alloc &alloc, Args &&... args) |
template<typename... Args> | |
static UniquePtr | CreateUnique (Args &&... args) |
virtual const mrpt::rtti::TRuntimeClassId * | GetRuntimeClass () const override |
Returns information about the class of an object in runtime. More... | |
virtual mrpt::rtti::CObject * | clone () const override |
Returns a deep copy (clone) of the object, indepently of its class. More... | |
using mrpt::opengl::COpenGLScene::ConstPtr = std::shared_ptr<const mrpt::opengl :: COpenGLScene > |
Definition at line 58 of file COpenGLScene.h.
using mrpt::opengl::COpenGLScene::ConstUniquePtr = std::unique_ptr<const mrpt::opengl :: COpenGLScene > |
Definition at line 58 of file COpenGLScene.h.
using mrpt::opengl::COpenGLScene::Ptr = std::shared_ptr< mrpt::opengl :: COpenGLScene > |
A type for the associated smart pointer
Definition at line 58 of file COpenGLScene.h.
using mrpt::opengl::COpenGLScene::TListViewports = std::vector<COpenGLViewport::Ptr> |
Definition at line 60 of file COpenGLScene.h.
using mrpt::opengl::COpenGLScene::UniquePtr = std::unique_ptr< mrpt::opengl :: COpenGLScene > |
Definition at line 58 of file COpenGLScene.h.
COpenGLScene::COpenGLScene | ( | ) |
Definition at line 43 of file COpenGLScene.cpp.
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override |
Definition at line 52 of file COpenGLScene.cpp.
References m_viewports.
COpenGLScene::COpenGLScene | ( | const COpenGLScene & | obj | ) |
Definition at line 47 of file COpenGLScene.cpp.
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staticprotected |
void COpenGLScene::clear | ( | bool | createMainViewport = true | ) |
Clear the list of objects and viewports in the scene, deleting objects' memory, and leaving just the default viewport with the default values.
Definition at line 60 of file COpenGLScene.cpp.
References createViewport(), and m_viewports.
Referenced by mrpt::hmtslam::CHierarchicalMapMHPartition::getAs3DScene(), operator=(), and serializeFrom().
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overridevirtual |
Returns a deep copy (clone) of the object, indepently of its class.
Implements mrpt::rtti::CObject.
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inlinestatic |
Definition at line 58 of file COpenGLScene.h.
Referenced by mrpt::apps::ICP_SLAM_App_Base::run().
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inlinestatic |
Definition at line 58 of file COpenGLScene.h.
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static |
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inlinestatic |
Definition at line 58 of file COpenGLScene.h.
COpenGLViewport::Ptr COpenGLScene::createViewport | ( | const std::string & | viewportName | ) |
Creates a new viewport, adding it to the scene and returning a pointer to the new object.
Names (case-sensitive) cannot be duplicated: if the name provided coincides with an already existing viewport, a pointer to the existing object will be returned. The first, default viewport, is named "main".
Definition at line 229 of file COpenGLScene.cpp.
References getViewport(), m_viewports, MRPT_END, and MRPT_START.
Referenced by clear().
void COpenGLScene::dumpListOfObjects | ( | std::vector< std::string > & | lst | ) |
Retrieves a list of all objects in text form.
Definition at line 214 of file COpenGLScene.cpp.
References m_viewports.
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inlineinherited |
Makes a deep copy of the object and returns a smart pointer to it.
Definition at line 204 of file CObject.h.
References mrpt::rtti::CObject::clone().
Referenced by mrpt::obs::CRawlog::insert().
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inline |
If disabled (default), the SceneViewer application will ignore the camera of the "main" viewport and keep the viewport selected by the user by hand; otherwise, the camera in the "main" viewport prevails.
Definition at line 134 of file COpenGLScene.h.
References m_followCamera.
Referenced by mrpt::apps::MonteCarloLocalization_Base::do_pf_localization(), and mrpt::hmtslam::CHMTSLAM::LSLAM_process_message_from_AA().
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inline |
Return the value of "followCamera".
Definition at line 138 of file COpenGLScene.h.
References m_followCamera.
void COpenGLScene::freeOpenGLResources | ( | ) |
Ensure all OpenGL buffers are destroyed.
Definition at line 333 of file COpenGLScene.cpp.
References visitAllObjects().
void COpenGLScene::getBoundingBox | ( | mrpt::math::TPoint3D & | bb_min, |
mrpt::math::TPoint3D & | bb_max, | ||
const std::string & | vpn = std::string("main") |
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) | const |
Evaluates the bounding box of the scene in the given viewport (default: "main").
Evaluates the bounding box of this object (including possible children) in the coordinate frame of the object parent.
Definition at line 323 of file COpenGLScene.cpp.
References ASSERTMSG_, bb_max, bb_min, and getViewport().
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inline |
Returns the i'th object of a given class (or of a descendant class), or nullptr (an empty smart pointer) if not found.
Example:
By default (ith=0), the first observation is returned.
Definition at line 155 of file COpenGLScene.h.
References m_viewports, MRPT_END, and MRPT_START.
CRenderizable::Ptr COpenGLScene::getByName | ( | const std::string & | str, |
const std::string & | viewportName = std::string("main") |
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Returns the first object with a given name, or nullptr (an empty smart pointer) if not found.
Definition at line 197 of file COpenGLScene.cpp.
References m_viewports.
Referenced by mrpt::apps::MonteCarloLocalization_Base::do_pf_localization().
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inlinestatic |
Definition at line 58 of file COpenGLScene.h.
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overridevirtual |
Returns information about the class of an object in runtime.
Reimplemented from mrpt::serialization::CSerializable.
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COpenGLViewport::Ptr COpenGLScene::getViewport | ( | const std::string & | viewportName = std::string("main") | ) | const |
Returns the viewport with the given name, or nullptr if it does not exist; note that the default viewport is named "main" and initially occupies the entire rendering area.
Definition at line 246 of file COpenGLScene.cpp.
References m_viewports, MRPT_END, and MRPT_START.
Referenced by createViewport(), mrpt::apps::MonteCarloLocalization_Base::do_pf_localization(), getBoundingBox(), mrpt::opengl::CFBORender::getCamera(), removeObject(), and mrpt::opengl::CFBORender::setCamera().
void COpenGLScene::initializeTextures | ( | ) |
Initializes all textures in the scene (See opengl::CTexturedPlane::initializeTextures)
Definition at line 206 of file COpenGLScene.cpp.
References m_viewports.
void COpenGLScene::insert | ( | const CRenderizable::Ptr & | newObject, |
const std::string & | viewportName = std::string("main") |
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) |
Insert a new object into the scene, in the given viewport (by default, into the "main" viewport).
The viewport must be created previously, an exception will be raised if the given name does not correspond to an existing viewport.
Definition at line 177 of file COpenGLScene.cpp.
References m_viewports, MRPT_END, MRPT_START, and THROW_EXCEPTION_FMT.
Referenced by mrpt::apps::MonteCarloLocalization_Base::do_pf_localization(), mrpt::hmtslam::CHierarchicalMapMHPartition::getAs3DScene(), insert(), insertCollection(), mrpt::hmtslam::CHMTSLAM::LSLAM_process_message_from_AA(), mrpt::nav::PlannerTPS_VirtualBase::renderMoveTree(), mrpt::apps::CGridMapAlignerApp::run(), mrpt::maps::COctoMapBase< octomap::OcTree, octomap::OcTreeNode >::saveMetricMapRepresentationToFile(), mrpt::maps::CBeaconMap::saveMetricMapRepresentationToFile(), and mrpt::maps::CLandmarksMap::saveMetricMapRepresentationToFile().
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inline |
Inserts a set of objects into the scene, in the given viewport ("main" by default).
Definition at line 95 of file COpenGLScene.h.
References mrpt::containers::begin(), mrpt::containers::end(), and insert().
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inline |
Inserts a set of objects into the scene, in the given viewport ("main" by default).
Any iterable object will be accepted.
Definition at line 73 of file COpenGLScene.h.
References insert().
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inlinestaticprotected |
Definition at line 236 of file COpenGLScene.h.
References IS_CLASS.
Referenced by visitAllObjects().
bool COpenGLScene::loadFromFile | ( | const std::string & | fil | ) |
Loads the scene from a 3Dscene file, the format used by the application SceneViewer3D.
Definition at line 307 of file COpenGLScene.cpp.
References mrpt::serialization::archiveFrom().
COpenGLScene & COpenGLScene::operator= | ( | const COpenGLScene & | obj | ) |
Definition at line 70 of file COpenGLScene.cpp.
References clear(), m_followCamera, and m_viewports.
void COpenGLScene::removeObject | ( | const CRenderizable::Ptr & | obj, |
const std::string & | viewportName = std::string("main") |
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) |
Removes the given object from the scene (it also deletes the object to free its memory).
Definition at line 259 of file COpenGLScene.cpp.
References ASSERT_, getViewport(), MRPT_END, and MRPT_START.
Referenced by mrpt::apps::MonteCarloLocalization_Base::do_pf_localization().
void COpenGLScene::render | ( | ) | const |
Render this scene.
Definition at line 90 of file COpenGLScene.cpp.
References m_viewports, MRPT_END, MRPT_START, and THROW_EXCEPTION.
bool COpenGLScene::saveToFile | ( | const std::string & | fil | ) | const |
Saves the scene to a 3Dscene file, loadable by the application SceneViewer3D.
Definition at line 293 of file COpenGLScene.cpp.
References mrpt::serialization::archiveFrom().
Referenced by mrpt::apps::CGridMapAlignerApp::run(), mrpt::maps::COctoMapBase< octomap::OcTree, octomap::OcTreeNode >::saveMetricMapRepresentationToFile(), mrpt::maps::CBeaconMap::saveMetricMapRepresentationToFile(), mrpt::maps::CLandmarksMap::saveMetricMapRepresentationToFile(), and mrpt::nav::PlannerRRT_SE2_TPS::solve().
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overrideprotectedvirtual |
Pure virtual method for reading (deserializing) from an abstract archive.
Users don't call this method directly. Instead, use stream >> object;
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in | The input binary stream where the object data must read from. |
version | The version of the object stored in the stream: use this version number in your code to know how to read the incoming data. |
std::exception | On any I/O error |
Implements mrpt::serialization::CSerializable.
Definition at line 127 of file COpenGLScene.cpp.
References clear(), m_followCamera, m_viewports, and MRPT_THROW_UNKNOWN_SERIALIZATION_VERSION.
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inlineprotectedvirtualinherited |
Virtual method for reading (deserializing) from an abstract schema based archive.
Definition at line 74 of file CSerializable.h.
References mrpt::serialization::CSerializable::GetRuntimeClass(), and THROW_EXCEPTION.
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overrideprotectedvirtual |
Must return the current versioning number of the object.
Start in zero for new classes, and increments each time there is a change in the stored format.
Implements mrpt::serialization::CSerializable.
Definition at line 116 of file COpenGLScene.cpp.
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overrideprotectedvirtual |
Pure virtual method for writing (serializing) to an abstract archive.
Users don't call this method directly. Instead, use stream << object;
.
std::exception | On any I/O error |
Implements mrpt::serialization::CSerializable.
Definition at line 117 of file COpenGLScene.cpp.
References m_followCamera, m_viewports, and out.
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inlineprotectedvirtualinherited |
Virtual method for writing (serializing) to an abstract schema based archive.
Definition at line 64 of file CSerializable.h.
References mrpt::serialization::CSerializable::GetRuntimeClass(), and THROW_EXCEPTION.
bool COpenGLScene::traceRay | ( | const mrpt::poses::CPose3D & | o, |
double & | dist | ||
) | const |
void COpenGLScene::unloadShaders | ( | ) |
Ensure all shaders are unloaded in all viewports.
Definition at line 54 of file COpenGLScene.cpp.
References m_viewports.
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inline |
Definition at line 118 of file COpenGLScene.h.
References m_viewports.
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inline |
Definition at line 123 of file COpenGLScene.h.
References m_viewports.
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inline |
Recursive depth-first visit all objects in all viewports of the scene, calling the user-supplied function The passed function must accept only one argument of type "const mrpt::opengl::CRenderizable::Ptr &".
Definition at line 213 of file COpenGLScene.h.
References internal_visitAllObjects(), m_viewports, MRPT_END, and MRPT_START.
Referenced by freeOpenGLResources().
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inlinevirtualinherited |
Introduces a pure virtual method responsible for writing to a mxArray
Matlab object, typically a MATLAB struct
whose contents are documented in each derived class.
mxArray
(caller is responsible of memory freeing) or nullptr is class does not support conversion to MATLAB. Definition at line 90 of file CSerializable.h.
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static |
Definition at line 58 of file COpenGLScene.h.
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protected |
Definition at line 230 of file COpenGLScene.h.
Referenced by enableFollowCamera(), followCamera(), operator=(), serializeFrom(), and serializeTo().
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The list of viewports, indexed by name.
Definition at line 233 of file COpenGLScene.h.
Referenced by clear(), createViewport(), dumpListOfObjects(), getByClass(), getByName(), getViewport(), initializeTextures(), insert(), operator=(), render(), serializeFrom(), serializeTo(), traceRay(), unloadShaders(), viewports(), viewportsCount(), visitAllObjects(), and ~COpenGLScene().
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staticprotected |
Definition at line 58 of file COpenGLScene.h.
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