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mrpt::gui::CDisplayWindow3D Class Reference

Detailed Description

A graphical user interface (GUI) for efficiently rendering 3D scenes in real-time.

This class always contains internally an instance of opengl::COpenGLScene, which the objects, viewports, etc. to be rendered.

Images can be grabbed automatically to disk for easy creation of videos. See CDisplayWindow3D::grabImagesStart (and for creating videos, mrpt::vision::CVideoFileWriter).

A short-cut for displaying 2D images (using the OpenGL rendering hardware) is available through setImageView() and setImageView_fast(). Internally, these methods call methods in the "main" viewport of the window (see COpenGLViewport).

Since the 3D rendering is performed in a detached thread, especial care must be taken when updating the 3D scene to be rendered. The process involves an internal critical section and it must always consist of these steps:

mrpt::gui::CDisplayWindow3D win("My window");
// Adquire the scene:
mrpt::opengl::COpenGLScenePtr &ptrScene = win.get3DSceneAndLock();
// Modify the scene:
ptrScene->...
// or replace by another scene:
ptrScene = otherScene;
// Unlock it, so the window can use it for redraw:
win.unlockAccess3DScene();
// Update window, if required
win.forceRepaint();

An alternative way of updating the scene is by creating, before locking the 3D window, a new object of class COpenGLScene, then locking the window only for replacing the smart pointer. This may be advantageous is generating the 3D scene takes a long time, since while the window is locked it will not be responsive to the user input or window redraw.

It is safer against exceptions to use the auxiliary class CDisplayWindow3DLocker.

mrpt::gui::CDisplayWindow3D win("My window");
// ...
{ // The scene is adquired in this scope
mrpt::opengl::COpenGLScenePtr ptrScene;
mrpt::gui::CDisplayWindow3DLocker locker(win,ptrScene);
//...
} // scene is unlocked upon dtor of `locker`

Notice however that a copy of the smart pointer is made, so replacement of the entire scene via operator = is not possible if using this method. Still, in general it should be preferred because the mutexes are automatically released in case of unexpected exceptions.

The window can also display a set of 2D text messages overlapped to the 3D scene. See CDisplayWindow3D::addTextMessage

For a list of supported events with the observer/observable pattern, see the discussion in mrpt::gui::CBaseGUIWindow. In addition to those events, this class introduces mrpt::gui::mrptEvent3DWindowGrabImageFile

** CDisplayWindow3D mouse view navigation cheatsheet **

See also
The example /samples/display3D, the tutorial only.

Definition at line 99 of file CDisplayWindow3D.h.

#include <mrpt/gui/CDisplayWindow3D.h>

Inheritance diagram for mrpt::gui::CDisplayWindow3D:
Inheritance graph

Public Member Functions

voidoperator new (size_t size)
 
voidoperator new[] (size_t size)
 
void operator delete (void *ptr) throw ()
 
void operator delete[] (void *ptr) throw ()
 
void operator delete (void *memory, void *ptr) throw ()
 
voidoperator new (size_t size, const std::nothrow_t &) throw ()
 
void operator delete (void *ptr, const std::nothrow_t &) throw ()
 
 CDisplayWindow3D (const std::string &windowCaption=std::string(), unsigned int initialWindowWidth=400, unsigned int initialWindowHeight=300)
 Constructor. More...
 
virtual ~CDisplayWindow3D ()
 Destructor. More...
 
mrpt::opengl::COpenGLScenePtr & get3DSceneAndLock ()
 Gets a reference to the smart shared pointer that holds the internal scene (carefuly read introduction in gui::CDisplayWindow3D before use!) This also locks the critical section for accesing the scene, thus the window will not be repainted until it is unlocked. More...
 
void unlockAccess3DScene ()
 Unlocks the access to the internal 3D scene. More...
 
void forceRepaint ()
 Repaints the window. forceRepaint, repaint and updateWindow are all aliases of the same method. More...
 
void repaint ()
 
void updateWindow ()
 
float getFOV () const
 Return the camera field of view (in degrees) (used for gluPerspective) More...
 
void setMinRange (double new_min)
 Changes the camera min clip range (z) (used for gluPerspective). The window is not updated with this method, call "forceRepaint" to update the 3D view. More...
 
void setMaxRange (double new_max)
 Changes the camera max clip range (z) (used for gluPerspective. The window is not updated with this method, call "forceRepaint" to update the 3D view. More...
 
void setFOV (float v)
 Changes the camera field of view (in degrees) (used for gluPerspective). The window is not updated with this method, call "forceRepaint" to update the 3D view. More...
 
void resize (unsigned int width, unsigned int height) MRPT_OVERRIDE
 Resizes the window, stretching the image to fit into the display area. More...
 
void setPos (int x, int y) MRPT_OVERRIDE
 Changes the position of the window on the screen. More...
 
void setWindowTitle (const std::string &str) MRPT_OVERRIDE
 Changes the window title. More...
 
void setCameraElevationDeg (float deg)
 Changes the camera parameters programmatically. More...
 
void setCameraAzimuthDeg (float deg)
 Changes the camera parameters programmatically. More...
 
void setCameraPointingToPoint (float x, float y, float z)
 Changes the camera parameters programmatically. More...
 
void setCameraZoom (float zoom)
 Changes the camera parameters programmatically. More...
 
void setCameraProjective (bool isProjective)
 Sets the camera as projective, or orthogonal. More...
 
float getCameraElevationDeg () const
 Get camera parameters programmatically. More...
 
float getCameraAzimuthDeg () const
 Get camera parameters programmatically. More...
 
void getCameraPointingToPoint (float &x, float &y, float &z) const
 Get camera parameters programmatically. More...
 
float getCameraZoom () const
 Get camera parameters programmatically. More...
 
bool isCameraProjective () const
 Sets the camera as projective, or orthogonal. More...
 
void useCameraFromScene (bool useIt=true)
 If set to true (default = false), the mouse-based scene navigation will be disabled and the camera position will be determined by the opengl viewports in the 3D scene. More...
 
bool getLastMousePositionRay (mrpt::math::TLine3D &ray) const
 Gets the 3D ray for the direction line of the pixel where the mouse cursor is at. More...
 
virtual bool getLastMousePosition (int &x, int &y) const MRPT_OVERRIDE
 Gets the last x,y pixel coordinates of the mouse. More...
 
virtual void setCursorCross (bool cursorIsCross) MRPT_OVERRIDE
 Set cursor style to default (cursorIsCross=false) or to a cross (cursorIsCross=true) More...
 
void grabImagesStart (const std::string &grab_imgs_prefix=std::string("video_"))
 Start to save rendered images to disk. More...
 
void grabImagesStop ()
 Stops image grabbing started by grabImagesStart. More...
 
void captureImagesStart ()
 Enables the grabbing of CImage objects from screenshots of the window. More...
 
void captureImagesStop ()
 Stop image grabbing. More...
 
bool getLastWindowImage (mrpt::utils::CImage &out_img) const
 Retrieve the last captured image from the window. More...
 
mrpt::utils::CImagePtr getLastWindowImagePtr () const
 Retrieve the last captured image from the window, as a smart pointer. More...
 
std::string grabImageGetNextFile ()
 Increments by one the image counter and return the next image file name (Users normally don't want to call this method). More...
 
bool isCapturingImgs () const
 
void addTextMessage (const double x, const double y, const std::string &text, const mrpt::utils::TColorf &color=mrpt::utils::TColorf(1.0, 1.0, 1.0), const size_t unique_index=0, const mrpt::opengl::TOpenGLFont font=mrpt::opengl::MRPT_GLUT_BITMAP_TIMES_ROMAN_24)
 Add 2D text messages overlapped to the 3D rendered scene. More...
 
void addTextMessage (const double x_frac, const double y_frac, const std::string &text, const mrpt::utils::TColorf &color, const std::string &font_name, const double font_size, const mrpt::opengl::TOpenGLFontStyle font_style=mrpt::opengl::NICE, const size_t unique_index=0, const double font_spacing=1.5, const double font_kerning=0.1, const bool draw_shadow=false, const mrpt::utils::TColorf &shadow_color=mrpt::utils::TColorf(0, 0, 0))
 overload with more font parameters - refer to mrpt::opengl::gl_utils::glDrawText() Available fonts are enumerated at mrpt::opengl::gl_utils::glSetFont() More...
 
void clearTextMessages ()
 Clear all text messages created with addTextMessage(). More...
 
double getRenderingFPS () const
 Get the average Frames Per Second (FPS) value from the last 250 rendering events. More...
 
mrpt::opengl::COpenGLViewportPtr getDefaultViewport ()
 A short cut for getting the "main" viewport of the scene object, it is equivalent to: More...
 
void setImageView (const mrpt::utils::CImage &img)
 Set the "main" viewport into "image view"-mode, where an image is efficiently drawn (fitting the viewport area) using an OpenGL textured quad. More...
 
void setImageView_fast (mrpt::utils::CImage &img)
 Just like setImageView but moves the internal image memory instead of making a copy, so it's faster but empties the input image. More...
 
voidgetWxObject ()
 Read-only access to the wxDialog object. More...
 
void notifyChildWindowDestruction ()
 Called by wx main thread to set m_hwnd to NULL. More...
 
void notifySemThreadReady ()
 Called by wx main thread to signal the semaphore that the wx window is built and ready. More...
 
bool isOpen ()
 Returns false if the user has already closed the window. More...
 
int waitForKey (bool ignoreControlKeys=true, mrptKeyModifier *out_pushModifier=NULL)
 Waits for any key to be pushed on the image or the console, and returns the key code. More...
 
bool keyHit () const
 Returns true if a key has been pushed, without blocking waiting for a new key being pushed. More...
 
void clearKeyHitFlag ()
 Assure that "keyHit" will return false until the next pushed key. More...
 
int getPushedKey (mrptKeyModifier *out_pushModifier=NULL)
 Returns the latest pushed key, or 0 if there is no new key stroke. More...
 
CObjectclone () const
 Cloning interface for smart pointers. More...
 
RTTI classes and functions
mrpt::utils::CObjectPtr duplicateGetSmartPtr () const
 Returns a copy of the object, indepently of its class, as a smart pointer (the newly created object will exist as long as any copy of this smart pointer). More...
 

Static Public Member Functions

static voidoperator new (size_t size, void *ptr)
 
static CDisplayWindow3DPtr Create (const std::string &windowCaption, unsigned int initialWindowWidth=400, unsigned int initialWindowHeight=300)
 Class factory returning a smart pointer. More...
 

Static Public Attributes

static const mrpt::utils::TRuntimeClassId classCObject
 
RTTI stuff
static const mrpt::utils::TRuntimeClassId classCBaseGUIWindow
 

Protected Member Functions

void createOpenGLContext ()
 Throws an exception on initialization error. More...
 
void doRender ()
 
void internalSetMinMaxRange ()
 
void internal_setRenderingFPS (double FPS)
 Set the rendering FPS (users don't call this, the method is for internal MRPT objects only) More...
 
void internal_emitGrabImageEvent (const std::string &fil)
 called by CMyGLCanvas_DisplayWindow3D::OnPostRenderSwapBuffers More...
 
void createWxWindow (unsigned int initialWidth, unsigned int initialHeight)
 Must be called by child classes just within the constructor. More...
 
void destroyWxWindow ()
 Must be called by child classes in their destructors. The code cannot be put into this class' destructor. More...
 
void publishEvent (const mrptEvent &e) const
 Called when you want this object to emit an event to all the observers currently subscribed to this object. More...
 
bool hasSubscribers () const
 Can be called by a derived class before preparing an event for publishing with publishEvent to determine if there is no one subscribed, so it can save the wasted time preparing an event that will be not read. More...
 

Protected Attributes

mrpt::opengl::COpenGLScenePtr m_3Dscene
 Internal OpenGL object (see general discussion in about usage of this object) More...
 
mrpt::synch::CCriticalSectionRecursive m_csAccess3DScene
 Critical section for accesing m_3Dscene. More...
 
mrpt::utils::void_ptr_noncopy m_DisplayDeviceContext
 
mrpt::utils::void_ptr_noncopy m_GLRenderingContext
 
std::string m_grab_imgs_prefix
 
unsigned int m_grab_imgs_idx
 
bool m_is_capturing_imgs
 
mrpt::utils::CImagePtr m_last_captured_img
 
synch::CCriticalSection m_last_captured_img_cs
 
mrpt::system::TTimeStamp m_lastFullScreen
 
double m_last_FPS
 
synch::CSemaphore m_semThreadReady
 This semaphore will be signaled when the wx window is built and ready. More...
 
synch::CSemaphore m_semWindowDestroyed
 This semaphore will be signaled when the wx window is destroyed. More...
 
std::string m_caption
 The caption of the window. More...
 
mrpt::utils::void_ptr_noncopy m_hwnd
 The window handle. More...
 
volatile bool m_keyPushed
 
volatile int m_keyPushedCode
 
volatile mrptKeyModifier m_keyPushedModifier
 

Friends

class C3DWindowDialog
 
class CMyGLCanvas_DisplayWindow3D
 

RTTI stuff

typedef CDisplayWindow3DPtr Ptr
 
typedef CDisplayWindow3DPtr ConstPtr
 
static mrpt::utils::CLASSINIT _init_CDisplayWindow3D
 
static mrpt::utils::TRuntimeClassId classCDisplayWindow3D
 
static const mrpt::utils::TRuntimeClassIdclassinfo
 
static const mrpt::utils::TRuntimeClassId_GetBaseClass ()
 
virtual const mrpt::utils::TRuntimeClassIdGetRuntimeClass () const
 Returns information about the class of an object in runtime. More...
 
virtual mrpt::utils::CObjectduplicate () const
 Returns a copy of the object, indepently of its class. More...
 
static mrpt::utils::CObjectCreateObject ()
 
static CDisplayWindow3DPtr Create ()
 

Member Typedef Documentation

◆ ConstPtr

typedef CDisplayWindow3DPtr mrpt::gui::CDisplayWindow3D::ConstPtr

Definition at line 102 of file CDisplayWindow3D.h.

◆ Ptr

typedef CDisplayWindow3DPtr mrpt::gui::CDisplayWindow3D::Ptr

A typedef for the associated smart pointer

Definition at line 102 of file CDisplayWindow3D.h.

Constructor & Destructor Documentation

◆ CDisplayWindow3D()

CDisplayWindow3D::CDisplayWindow3D ( const std::string windowCaption = std::string(),
unsigned int  initialWindowWidth = 400,
unsigned int  initialWindowHeight = 300 
)

Constructor.

Definition at line 410 of file CDisplayWindow3D.cpp.

References mrpt::gui::CBaseGUIWindow::createWxWindow(), and m_3Dscene.

Referenced by Create().

◆ ~CDisplayWindow3D()

CDisplayWindow3D::~CDisplayWindow3D ( )
virtual

Member Function Documentation

◆ _GetBaseClass()

static const mrpt::utils::TRuntimeClassId* mrpt::gui::CDisplayWindow3D::_GetBaseClass ( )
staticprotected

◆ addTextMessage() [1/2]

void CDisplayWindow3D::addTextMessage ( const double  x,
const double  y,
const std::string text,
const mrpt::utils::TColorf color = mrpt::utils::TColorf(1.0,1.0,1.0),
const size_t  unique_index = 0,
const mrpt::opengl::TOpenGLFont  font = mrpt::opengl::MRPT_GLUT_BITMAP_TIMES_ROMAN_24 
)

Add 2D text messages overlapped to the 3D rendered scene.

The string will remain displayed in the 3D window until it's changed with subsequent calls to this same method, or all the texts are cleared with clearTextMessages().

Parameters
xThe X position, interpreted as absolute pixels from the left if X>=1, absolute pixels from the left if X<0 or as a width factor if in the range [0,1[.
yThe Y position, interpreted as absolute pixels from the bottom if Y>=1, absolute pixels from the top if Y<0 or as a height factor if in the range [0,1[.
textThe text string to display.
colorThe text color. For example: TColorf(1.0,1.0,1.0)
unique_indexAn "index" for this text message, so that subsequent calls with the same index will overwrite this text message instead of creating new ones.

You'll need to refresh the display manually with forceRepaint().

See also
clearTextMessages

Definition at line 889 of file CDisplayWindow3D.cpp.

References mrpt::utils::non_copiable_ptr_basic< T >::get(), mrpt::gui::CBaseGUIWindow::m_hwnd, MRPT_UNUSED_PARAM, mrpt::gui::WxSubsystem::TRequestToWxMainThread::OPCODE, mrpt::gui::WxSubsystem::pushPendingWxRequest(), mrpt::gui::WxSubsystem::TRequestToWxMainThread::source3D, mrpt::gui::WxSubsystem::TRequestToWxMainThread::str, mrpt::gui::WxSubsystem::TRequestToWxMainThread::vector_x, mrpt::gui::WxSubsystem::TRequestToWxMainThread::x, and mrpt::gui::WxSubsystem::TRequestToWxMainThread::y.

Referenced by mrpt::graphslam::CGraphSlamEngine< GRAPH_T >::pauseExec(), and mrpt::graphslam::CGraphSlamEngine< GRAPH_T >::resumeExec().

◆ addTextMessage() [2/2]

void CDisplayWindow3D::addTextMessage ( const double  x_frac,
const double  y_frac,
const std::string text,
const mrpt::utils::TColorf color,
const std::string font_name,
const double  font_size,
const mrpt::opengl::TOpenGLFontStyle  font_style = mrpt::opengl::NICE,
const size_t  unique_index = 0,
const double  font_spacing = 1.5,
const double  font_kerning = 0.1,
const bool  draw_shadow = false,
const mrpt::utils::TColorf shadow_color = mrpt::utils::TColorf(0,0,0) 
)

◆ captureImagesStart()

void CDisplayWindow3D::captureImagesStart ( )

Enables the grabbing of CImage objects from screenshots of the window.

See also
getLastWindowImage

Definition at line 845 of file CDisplayWindow3D.cpp.

References m_is_capturing_imgs.

◆ captureImagesStop()

void CDisplayWindow3D::captureImagesStop ( )

Stop image grabbing.

See also
captureImagesStart

Definition at line 853 of file CDisplayWindow3D.cpp.

References m_is_capturing_imgs.

◆ clearKeyHitFlag()

void mrpt::gui::CBaseGUIWindow::clearKeyHitFlag ( )
inlineinherited

Assure that "keyHit" will return false until the next pushed key.

See also
keyHit, waitForKey

Definition at line 127 of file CBaseGUIWindow.h.

◆ clearTextMessages()

void CDisplayWindow3D::clearTextMessages ( )

◆ clone()

CObject* mrpt::utils::CObject::clone ( ) const
inlineinherited

Cloning interface for smart pointers.

Definition at line 133 of file CObject.h.

◆ Create() [1/2]

static CDisplayWindow3DPtr mrpt::gui::CDisplayWindow3D::Create ( )
static

◆ Create() [2/2]

CDisplayWindow3DPtr CDisplayWindow3D::Create ( const std::string windowCaption,
unsigned int  initialWindowWidth = 400,
unsigned int  initialWindowHeight = 300 
)
static

Class factory returning a smart pointer.

Definition at line 430 of file CDisplayWindow3D.cpp.

References CDisplayWindow3D().

◆ CreateObject()

static mrpt::utils::CObject* mrpt::gui::CDisplayWindow3D::CreateObject ( )
static

◆ createOpenGLContext()

void mrpt::gui::CDisplayWindow3D::createOpenGLContext ( )
protected

Throws an exception on initialization error.

◆ createWxWindow()

void CBaseGUIWindow::createWxWindow ( unsigned int  initialWidth,
unsigned int  initialHeight 
)
protectedinherited

◆ destroyWxWindow()

void CBaseGUIWindow::destroyWxWindow ( )
protectedinherited

◆ doRender()

void mrpt::gui::CDisplayWindow3D::doRender ( )
protected

◆ duplicate()

virtual mrpt::utils::CObject* mrpt::gui::CDisplayWindow3D::duplicate ( ) const
virtual

Returns a copy of the object, indepently of its class.

Implements mrpt::utils::CObject.

◆ duplicateGetSmartPtr()

mrpt::utils::CObjectPtr CObject::duplicateGetSmartPtr ( ) const
inlineinherited

Returns a copy of the object, indepently of its class, as a smart pointer (the newly created object will exist as long as any copy of this smart pointer).

Definition at line 162 of file CObject.h.

References mrpt::utils::CObjectPtr.

Referenced by mrpt::obs::CRawlog::addActions(), mrpt::slam::CIncrementalMapPartitioner::addMapFrame(), and mrpt::obs::CRawlog::addObservations().

◆ forceRepaint()

void CDisplayWindow3D::forceRepaint ( )

◆ get3DSceneAndLock()

opengl::COpenGLScenePtr & CDisplayWindow3D::get3DSceneAndLock ( )

Gets a reference to the smart shared pointer that holds the internal scene (carefuly read introduction in gui::CDisplayWindow3D before use!) This also locks the critical section for accesing the scene, thus the window will not be repainted until it is unlocked.

Note
It is safer to use mrpt::gui::CDisplayWindow3DLocker instead.

Definition at line 528 of file CDisplayWindow3D.cpp.

References mrpt::synch::CCriticalSectionRecursive::enter(), m_3Dscene, and m_csAccess3DScene.

Referenced by mrpt::gui::CDisplayWindow3DLocker::CDisplayWindow3DLocker(), mrpt::detectors::CFaceDetection::experimental_viewFacePointsAndEigenVects(), mrpt::detectors::CFaceDetection::experimental_viewFacePointsScanned(), mrpt::detectors::CFaceDetection::experimental_viewRegions(), mrpt::graphslam::optimizers::CLevMarqGSO< GRAPH_T >::fitGraphInView(), mrpt::graphslam::deciders::CICPCriteriaERD< GRAPH_T >::initializeVisuals(), mrpt::graphslam::optimizers::CLevMarqGSO< GRAPH_T >::initOptDistanceVisualization(), CGraphSlamHandler< GRAPH_T >::initVisualization(), mrpt::graphslam::optimizers::CLevMarqGSO< GRAPH_T >::toggleGraphVisualization(), mrpt::graphslam::deciders::CICPCriteriaERD< GRAPH_T >::toggleLaserScansVisualization(), mrpt::graphslam::optimizers::CLevMarqGSO< GRAPH_T >::toggleOptDistanceVisualization(), mrpt::graphslam::optimizers::CLevMarqGSO< GRAPH_T >::updateGraphVisualization(), mrpt::graphslam::optimizers::CLevMarqGSO< GRAPH_T >::updateOptDistanceVisualization(), and mrpt::graphslam::deciders::CICPCriteriaERD< GRAPH_T >::updateVisuals().

◆ getCameraAzimuthDeg()

float CDisplayWindow3D::getCameraAzimuthDeg ( ) const

◆ getCameraElevationDeg()

float CDisplayWindow3D::getCameraElevationDeg ( ) const

◆ getCameraPointingToPoint()

void CDisplayWindow3D::getCameraPointingToPoint ( float &  x,
float &  y,
float &  z 
) const

◆ getCameraZoom()

float CDisplayWindow3D::getCameraZoom ( ) const

◆ getDefaultViewport()

mrpt::opengl::COpenGLViewportPtr CDisplayWindow3D::getDefaultViewport ( )

A short cut for getting the "main" viewport of the scene object, it is equivalent to:

mrpt::opengl::COpenGLScenePtr &scene = win3D.get3DSceneAndLock();
viewport = scene->getViewport("main");
win3D.unlockAccess3DScene();

Definition at line 1022 of file CDisplayWindow3D.cpp.

References mrpt::synch::CCriticalSectionRecursive::enter(), mrpt::synch::CCriticalSectionRecursive::leave(), m_3Dscene, and m_csAccess3DScene.

◆ getFOV()

float CDisplayWindow3D::getFOV ( ) const

Return the camera field of view (in degrees) (used for gluPerspective)

Definition at line 675 of file CDisplayWindow3D.cpp.

References mrpt::utils::non_copiable_ptr_basic< T >::get(), mrpt::gui::C3DWindowDialog::m_canvas, and mrpt::gui::CBaseGUIWindow::m_hwnd.

◆ getLastMousePosition()

bool CDisplayWindow3D::getLastMousePosition ( int &  x,
int &  y 
) const
virtual

Gets the last x,y pixel coordinates of the mouse.

Returns
False if the window is closed.
See also
getLastMousePositionRay

Implements mrpt::gui::CBaseGUIWindow.

Definition at line 769 of file CDisplayWindow3D.cpp.

References mrpt::utils::non_copiable_ptr_basic< T >::get(), mrpt::gui::C3DWindowDialog::m_canvas, mrpt::gui::CBaseGUIWindow::m_hwnd, and MRPT_UNUSED_PARAM.

Referenced by getLastMousePositionRay().

◆ getLastMousePositionRay()

bool CDisplayWindow3D::getLastMousePositionRay ( mrpt::math::TLine3D ray) const

Gets the 3D ray for the direction line of the pixel where the mouse cursor is at.

Returns
False if the window is closed.
See also
getLastMousePosition

Definition at line 785 of file CDisplayWindow3D.cpp.

References mrpt::synch::CCriticalSectionRecursive::enter(), getLastMousePosition(), mrpt::synch::CCriticalSectionRecursive::leave(), m_3Dscene, and m_csAccess3DScene.

◆ getLastWindowImage()

bool CDisplayWindow3D::getLastWindowImage ( mrpt::utils::CImage out_img) const

Retrieve the last captured image from the window.

You MUST CALL FIRST captureImagesStart to enable image grabbing.

Returns
false if there was no time yet for grabbing any image (then, the output image is undefined).
See also
captureImagesStart, getLastWindowImagePtr

Definition at line 861 of file CDisplayWindow3D.cpp.

References m_last_captured_img, and m_last_captured_img_cs.

◆ getLastWindowImagePtr()

CImagePtr CDisplayWindow3D::getLastWindowImagePtr ( ) const

Retrieve the last captured image from the window, as a smart pointer.

This method is more efficient than getLastWindowImage since only a copy of the pointer is performed, while getLastWindowImage would copy the entire image.

You MUST CALL FIRST captureImagesStart to enable image grabbing. If there was no time yet for grabbing any image, an empty smart pointer will be returned.

See also
captureImagesStart, getLastWindowImage

Definition at line 880 of file CDisplayWindow3D.cpp.

References m_last_captured_img, and m_last_captured_img_cs.

◆ getPushedKey()

int CBaseGUIWindow::getPushedKey ( mrptKeyModifier out_pushModifier = NULL)
inherited

Returns the latest pushed key, or 0 if there is no new key stroke.

Parameters
out_pushModifierIf set to !=NULL, the modifiers of the key stroke will be saved here.
Returns
The virtual key code, as defined in <mrpt/gui/keycodes.h> (a replication of wxWidgets key codes).
See also
keyHit, waitForKey

Definition at line 188 of file CBaseGUIWindow.cpp.

References mrpt::gui::MRPTKMOD_NONE, and mrpt::system::sleep().

◆ getRenderingFPS()

double mrpt::gui::CDisplayWindow3D::getRenderingFPS ( ) const
inline

Get the average Frames Per Second (FPS) value from the last 250 rendering events.

Definition at line 284 of file CDisplayWindow3D.h.

◆ GetRuntimeClass()

virtual const mrpt::utils::TRuntimeClassId* mrpt::gui::CDisplayWindow3D::GetRuntimeClass ( ) const
virtual

Returns information about the class of an object in runtime.

Reimplemented from mrpt::gui::CBaseGUIWindow.

◆ getWxObject()

void* mrpt::gui::CBaseGUIWindow::getWxObject ( )
inlineinherited

Read-only access to the wxDialog object.

Definition at line 75 of file CBaseGUIWindow.h.

References mrpt::utils::non_copiable_ptr_basic< T >::get().

Referenced by mrpt::gui::WxSubsystem::CWXMainFrame::OnTimerProcessRequests().

◆ grabImageGetNextFile()

std::string CDisplayWindow3D::grabImageGetNextFile ( )

Increments by one the image counter and return the next image file name (Users normally don't want to call this method).

See also
grabImagesStart

Definition at line 834 of file CDisplayWindow3D.cpp.

References mrpt::format(), m_grab_imgs_idx, and m_grab_imgs_prefix.

◆ grabImagesStart()

void CDisplayWindow3D::grabImagesStart ( const std::string grab_imgs_prefix = std::string("video_"))

Start to save rendered images to disk.

Images will be saved independently as png files, depending on the template path passed to this method. For example:

path_prefix: "./video_"

Will generate "./video_000001.png", etc.

If this feature is enabled, the window will emit events of the type mrpt::gui::mrptEvent3DWindowGrabImageFile() which you can subscribe to.

See also
grabImagesStop

Definition at line 817 of file CDisplayWindow3D.cpp.

References m_grab_imgs_idx, and m_grab_imgs_prefix.

◆ grabImagesStop()

void CDisplayWindow3D::grabImagesStop ( )

Stops image grabbing started by grabImagesStart.

See also
grabImagesStart

Definition at line 826 of file CDisplayWindow3D.cpp.

References m_grab_imgs_prefix.

◆ hasSubscribers()

bool mrpt::utils::CObservable::hasSubscribers ( ) const
inlineprotectedinherited

Can be called by a derived class before preparing an event for publishing with publishEvent to determine if there is no one subscribed, so it can save the wasted time preparing an event that will be not read.

Definition at line 52 of file CObservable.h.

Referenced by mrpt::gui::CWindowDialog::OnMouseDown(), mrpt::gui::CWindowDialog::OnMouseMove(), mrpt::gui::CWindowDialog::OnResize(), and mrpt::opengl::COpenGLViewport::render().

◆ internal_emitGrabImageEvent()

void CDisplayWindow3D::internal_emitGrabImageEvent ( const std::string fil)
protected

called by CMyGLCanvas_DisplayWindow3D::OnPostRenderSwapBuffers

Definition at line 1015 of file CDisplayWindow3D.cpp.

References mrpt::utils::CObservable::publishEvent().

◆ internal_setRenderingFPS()

void CDisplayWindow3D::internal_setRenderingFPS ( double  FPS)
protected

Set the rendering FPS (users don't call this, the method is for internal MRPT objects only)

See also
getRenderingFPS

Definition at line 1008 of file CDisplayWindow3D.cpp.

References m_last_FPS.

◆ internalSetMinMaxRange()

void mrpt::gui::CDisplayWindow3D::internalSetMinMaxRange ( )
protected

◆ isCameraProjective()

bool CDisplayWindow3D::isCameraProjective ( ) const

Sets the camera as projective, or orthogonal.

Definition at line 756 of file CDisplayWindow3D.cpp.

References mrpt::utils::non_copiable_ptr_basic< T >::get(), mrpt::gui::C3DWindowDialog::m_canvas, and mrpt::gui::CBaseGUIWindow::m_hwnd.

◆ isCapturingImgs()

bool mrpt::gui::CDisplayWindow3D::isCapturingImgs ( ) const
inline

Definition at line 235 of file CDisplayWindow3D.h.

◆ isOpen()

bool CBaseGUIWindow::isOpen ( )
inherited

◆ keyHit()

bool mrpt::gui::CBaseGUIWindow::keyHit ( ) const
inlineinherited

Returns true if a key has been pushed, without blocking waiting for a new key being pushed.

See also
waitForKey, clearKeyHitFlag

Definition at line 122 of file CBaseGUIWindow.h.

◆ notifyChildWindowDestruction()

void CBaseGUIWindow::notifyChildWindowDestruction ( )
inherited

Called by wx main thread to set m_hwnd to NULL.

Definition at line 145 of file CBaseGUIWindow.cpp.

Referenced by mrpt::gui::CWindowDialog::OnClose(), and mrpt::gui::C3DWindowDialog::OnClose().

◆ notifySemThreadReady()

void CBaseGUIWindow::notifySemThreadReady ( )
inherited

Called by wx main thread to signal the semaphore that the wx window is built and ready.

Definition at line 220 of file CBaseGUIWindow.cpp.

Referenced by mrpt::gui::WxSubsystem::CWXMainFrame::OnTimerProcessRequests().

◆ operator delete() [1/3]

void mrpt::gui::CDisplayWindow3D::operator delete ( void memory,
void ptr 
)
throw (
)
inline

Definition at line 102 of file CDisplayWindow3D.h.

◆ operator delete() [2/3]

void mrpt::gui::CDisplayWindow3D::operator delete ( void ptr,
const std::nothrow_t &   
)
throw (
)
inline

Definition at line 102 of file CDisplayWindow3D.h.

◆ operator delete() [3/3]

void mrpt::gui::CDisplayWindow3D::operator delete ( void ptr)
throw (
)
inline

Definition at line 102 of file CDisplayWindow3D.h.

◆ operator delete[]()

void mrpt::gui::CDisplayWindow3D::operator delete[] ( void ptr)
throw (
)
inline

Definition at line 102 of file CDisplayWindow3D.h.

◆ operator new() [1/3]

void* mrpt::gui::CDisplayWindow3D::operator new ( size_t  size,
const std::nothrow_t &   
)
throw (
)
inline

Definition at line 102 of file CDisplayWindow3D.h.

◆ operator new() [2/3]

static void* mrpt::gui::CDisplayWindow3D::operator new ( size_t  size,
void ptr 
)
inlinestatic

Definition at line 102 of file CDisplayWindow3D.h.

◆ operator new() [3/3]

void* mrpt::gui::CDisplayWindow3D::operator new ( size_t  size)
inline

Definition at line 102 of file CDisplayWindow3D.h.

◆ operator new[]()

void* mrpt::gui::CDisplayWindow3D::operator new[] ( size_t  size)
inline

Definition at line 102 of file CDisplayWindow3D.h.

◆ publishEvent()

void CObservable::publishEvent ( const mrptEvent e) const
protectedinherited

◆ repaint()

void mrpt::gui::CDisplayWindow3D::repaint ( )
inline

◆ resize()

void CDisplayWindow3D::resize ( unsigned int  width,
unsigned int  height 
)
virtual

◆ setCameraAzimuthDeg()

void CDisplayWindow3D::setCameraAzimuthDeg ( float  deg)

◆ setCameraElevationDeg()

void CDisplayWindow3D::setCameraElevationDeg ( float  deg)

◆ setCameraPointingToPoint()

void CDisplayWindow3D::setCameraPointingToPoint ( float  x,
float  y,
float  z 
)

◆ setCameraProjective()

void CDisplayWindow3D::setCameraProjective ( bool  isProjective)

◆ setCameraZoom()

void CDisplayWindow3D::setCameraZoom ( float  zoom)

◆ setCursorCross()

void CDisplayWindow3D::setCursorCross ( bool  cursorIsCross)
virtual

Set cursor style to default (cursorIsCross=false) or to a cross (cursorIsCross=true)

See also
getLastMousePositionRay

Implements mrpt::gui::CBaseGUIWindow.

Definition at line 802 of file CDisplayWindow3D.cpp.

References mrpt::utils::non_copiable_ptr_basic< T >::get(), mrpt::gui::C3DWindowDialog::m_canvas, mrpt::gui::CBaseGUIWindow::m_hwnd, and MRPT_UNUSED_PARAM.

◆ setFOV()

void CDisplayWindow3D::setFOV ( float  v)

Changes the camera field of view (in degrees) (used for gluPerspective). The window is not updated with this method, call "forceRepaint" to update the 3D view.

Definition at line 685 of file CDisplayWindow3D.cpp.

References mrpt::utils::non_copiable_ptr_basic< T >::get(), mrpt::gui::C3DWindowDialog::m_canvas, and mrpt::gui::CBaseGUIWindow::m_hwnd.

◆ setImageView()

void CDisplayWindow3D::setImageView ( const mrpt::utils::CImage img)

Set the "main" viewport into "image view"-mode, where an image is efficiently drawn (fitting the viewport area) using an OpenGL textured quad.

Call this method with the new image to update the displayed image (but recall to first lock the parent openglscene's critical section, then do the update, then release the lock, and then issue a window repaint). Internally, the texture is drawn using a mrpt::opengl::CTexturedPlane The viewport can be reverted to behave like a normal viewport by calling setNormalMode()

See also
setImageView_fast, COpenGLViewport
Note
This method already locks/unlocks the 3D scene of the window, so the user must NOT call get3DSceneAndLock() / unlockAccess3DScene() before/after calling it.

Definition at line 1030 of file CDisplayWindow3D.cpp.

References mrpt::synch::CCriticalSectionRecursive::enter(), mrpt::synch::CCriticalSectionRecursive::leave(), m_3Dscene, and m_csAccess3DScene.

◆ setImageView_fast()

void CDisplayWindow3D::setImageView_fast ( mrpt::utils::CImage img)

Just like setImageView but moves the internal image memory instead of making a copy, so it's faster but empties the input image.

See also
setImageView, COpenGLViewport
Note
This method already locks/unlocks the 3D scene of the window, so the user must NOT call get3DSceneAndLock() / unlockAccess3DScene() before/after calling it.

Definition at line 1038 of file CDisplayWindow3D.cpp.

References mrpt::synch::CCriticalSectionRecursive::enter(), mrpt::synch::CCriticalSectionRecursive::leave(), m_3Dscene, and m_csAccess3DScene.

◆ setMaxRange()

void CDisplayWindow3D::setMaxRange ( double  new_max)

Changes the camera max clip range (z) (used for gluPerspective. The window is not updated with this method, call "forceRepaint" to update the 3D view.

Definition at line 661 of file CDisplayWindow3D.cpp.

References m_3Dscene.

◆ setMinRange()

void CDisplayWindow3D::setMinRange ( double  new_min)

Changes the camera min clip range (z) (used for gluPerspective). The window is not updated with this method, call "forceRepaint" to update the 3D view.

Definition at line 648 of file CDisplayWindow3D.cpp.

References m_3Dscene.

◆ setPos()

void CDisplayWindow3D::setPos ( int  x,
int  y 
)
virtual

◆ setWindowTitle()

void CDisplayWindow3D::setWindowTitle ( const std::string str)
virtual

◆ unlockAccess3DScene()

void CDisplayWindow3D::unlockAccess3DScene ( )

◆ updateWindow()

void mrpt::gui::CDisplayWindow3D::updateWindow ( )
inline

Definition at line 159 of file CDisplayWindow3D.h.

◆ useCameraFromScene()

void CDisplayWindow3D::useCameraFromScene ( bool  useIt = true)

If set to true (default = false), the mouse-based scene navigation will be disabled and the camera position will be determined by the opengl viewports in the 3D scene.

Definition at line 577 of file CDisplayWindow3D.cpp.

References mrpt::utils::non_copiable_ptr_basic< T >::get(), mrpt::gui::C3DWindowDialog::m_canvas, mrpt::gui::CBaseGUIWindow::m_hwnd, and MRPT_UNUSED_PARAM.

◆ waitForKey()

int CBaseGUIWindow::waitForKey ( bool  ignoreControlKeys = true,
mrptKeyModifier out_pushModifier = NULL 
)
inherited

Waits for any key to be pushed on the image or the console, and returns the key code.

This method remove key strokes previous to its call, so it will always wait. To get the latest pushed key, see

Parameters
ignoreControlKeysIf set to false, any push of shift, cmd, control, etc... will make this method to return.
out_pushModifierIf set to !=NULL, the modifiers of the key stroke will be saved here.
Returns
The virtual key code, as defined in mrptKeyCode (a replication of wxWidgets key codes).
See also
getPushedKey, Key codes in the enum mrptKeyCode

Definition at line 154 of file CBaseGUIWindow.cpp.

References mrpt::system::os::getch(), mrpt::system::os::kbhit(), mrpt::gui::MRPTKMOD_NONE, and mrpt::system::sleep().

Referenced by find_chessboard_corners_multiple(), and mrpt::vision::CFeature::internal_distanceBetweenPolarImages().

Friends And Related Function Documentation

◆ C3DWindowDialog

friend class C3DWindowDialog
friend

Definition at line 105 of file CDisplayWindow3D.h.

◆ CMyGLCanvas_DisplayWindow3D

friend class CMyGLCanvas_DisplayWindow3D
friend

Definition at line 106 of file CDisplayWindow3D.h.

Member Data Documentation

◆ _init_CDisplayWindow3D

mrpt::utils::CLASSINIT mrpt::gui::CDisplayWindow3D::_init_CDisplayWindow3D
staticprotected

Definition at line 102 of file CDisplayWindow3D.h.

◆ classCBaseGUIWindow

const mrpt::utils::TRuntimeClassId mrpt::gui::CBaseGUIWindow::classCBaseGUIWindow
staticinherited

Definition at line 49 of file CBaseGUIWindow.h.

◆ classCDisplayWindow3D

mrpt::utils::TRuntimeClassId mrpt::gui::CDisplayWindow3D::classCDisplayWindow3D
static

Definition at line 102 of file CDisplayWindow3D.h.

◆ classCObject

const mrpt::utils::TRuntimeClassId mrpt::utils::CObject::classCObject
staticinherited

Definition at line 118 of file CObject.h.

◆ classinfo

const mrpt::utils::TRuntimeClassId* mrpt::gui::CDisplayWindow3D::classinfo
static

Definition at line 102 of file CDisplayWindow3D.h.

◆ m_3Dscene

mrpt::opengl::COpenGLScenePtr mrpt::gui::CDisplayWindow3D::m_3Dscene
protected

Internal OpenGL object (see general discussion in about usage of this object)

Definition at line 108 of file CDisplayWindow3D.h.

Referenced by CDisplayWindow3D(), get3DSceneAndLock(), getDefaultViewport(), getLastMousePositionRay(), setImageView(), setImageView_fast(), setMaxRange(), and setMinRange().

◆ m_caption

std::string mrpt::gui::CBaseGUIWindow::m_caption
protectedinherited

◆ m_csAccess3DScene

mrpt::synch::CCriticalSectionRecursive mrpt::gui::CDisplayWindow3D::m_csAccess3DScene
protected

◆ m_DisplayDeviceContext

mrpt::utils::void_ptr_noncopy mrpt::gui::CDisplayWindow3D::m_DisplayDeviceContext
protected

Definition at line 113 of file CDisplayWindow3D.h.

◆ m_GLRenderingContext

mrpt::utils::void_ptr_noncopy mrpt::gui::CDisplayWindow3D::m_GLRenderingContext
protected

Definition at line 114 of file CDisplayWindow3D.h.

◆ m_grab_imgs_idx

unsigned int mrpt::gui::CDisplayWindow3D::m_grab_imgs_idx
protected

Definition at line 117 of file CDisplayWindow3D.h.

Referenced by grabImageGetNextFile(), and grabImagesStart().

◆ m_grab_imgs_prefix

std::string mrpt::gui::CDisplayWindow3D::m_grab_imgs_prefix
protected

Definition at line 116 of file CDisplayWindow3D.h.

Referenced by grabImageGetNextFile(), grabImagesStart(), and grabImagesStop().

◆ m_hwnd

mrpt::utils::void_ptr_noncopy mrpt::gui::CBaseGUIWindow::m_hwnd
protectedinherited

◆ m_is_capturing_imgs

bool mrpt::gui::CDisplayWindow3D::m_is_capturing_imgs
protected

Definition at line 119 of file CDisplayWindow3D.h.

Referenced by captureImagesStart(), and captureImagesStop().

◆ m_keyPushed

volatile bool mrpt::gui::CBaseGUIWindow::m_keyPushed
protectedinherited

Definition at line 67 of file CBaseGUIWindow.h.

Referenced by mrpt::gui::CWindowDialog::OnChar().

◆ m_keyPushedCode

volatile int mrpt::gui::CBaseGUIWindow::m_keyPushedCode
protectedinherited

Definition at line 68 of file CBaseGUIWindow.h.

Referenced by mrpt::gui::CWindowDialog::OnChar().

◆ m_keyPushedModifier

volatile mrptKeyModifier mrpt::gui::CBaseGUIWindow::m_keyPushedModifier
protectedinherited

Definition at line 69 of file CBaseGUIWindow.h.

Referenced by mrpt::gui::CWindowDialog::OnChar().

◆ m_last_captured_img

mrpt::utils::CImagePtr mrpt::gui::CDisplayWindow3D::m_last_captured_img
protected

Definition at line 120 of file CDisplayWindow3D.h.

Referenced by getLastWindowImage(), and getLastWindowImagePtr().

◆ m_last_captured_img_cs

synch::CCriticalSection mrpt::gui::CDisplayWindow3D::m_last_captured_img_cs
protected

Definition at line 121 of file CDisplayWindow3D.h.

Referenced by getLastWindowImage(), and getLastWindowImagePtr().

◆ m_last_FPS

double mrpt::gui::CDisplayWindow3D::m_last_FPS
protected
See also
getRenderingFPS

Definition at line 127 of file CDisplayWindow3D.h.

Referenced by internal_setRenderingFPS().

◆ m_lastFullScreen

mrpt::system::TTimeStamp mrpt::gui::CDisplayWindow3D::m_lastFullScreen
protected

Definition at line 125 of file CDisplayWindow3D.h.

◆ m_semThreadReady

synch::CSemaphore mrpt::gui::CBaseGUIWindow::m_semThreadReady
protectedinherited

This semaphore will be signaled when the wx window is built and ready.

Definition at line 61 of file CBaseGUIWindow.h.

◆ m_semWindowDestroyed

synch::CSemaphore mrpt::gui::CBaseGUIWindow::m_semWindowDestroyed
protectedinherited

This semaphore will be signaled when the wx window is destroyed.

Definition at line 62 of file CBaseGUIWindow.h.

Referenced by mrpt::gui::CWindowDialog::OnClose(), and mrpt::gui::C3DWindowDialog::OnClose().




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