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mrpt::opengl::mrptEventGLPreRender Class Reference

Detailed Description

An event sent by an mrpt::opengl::COpenGLViewport just after clearing the viewport and setting the GL_PROJECTION matrix, and before calling the scene OpenGL drawing primitives.

While handling this event you can call OpenGL glBegin(),glEnd(),gl* functions or those in mrpt::opengl::gl_utils to draw stuff in the back of the normal objects contained in the COpenGLScene.

After processing this event, COpenGLViewport will change the OpenGL matrix mode into "GL_MODELVIEW" and load an identity matrix to continue rendering the scene objects as usual. Any change done to the GL_PROJECTION will have effects, so do a glPushMatrix()/glPopMatrix() if that is not your intention.

IMPORTANTE NOTICE: Event handlers in your observer class will most likely be invoked from an internal GUI thread of MRPT, so all your code in the handler must be thread safe.

Definition at line 383 of file COpenGLViewport.h.

#include <mrpt/opengl/COpenGLViewport.h>

Inheritance diagram for mrpt::opengl::mrptEventGLPreRender:
Inheritance graph

Public Member Functions

 mrptEventGLPreRender (const COpenGLViewport *obj)
template<class EVENTTYPE >
bool isOfType () const
template<class EVENTTYPE >
const EVENTTYPE * getAs () const
template<class EVENTTYPE >
EVENTTYPE * getAsNonConst () const

Public Attributes

const COpenGLViewport *const source_viewport
mrpt::system::TTimeStamp timestamp

Protected Member Functions

void do_nothing () MRPT_OVERRIDE
 Just to allow this class to be polymorphic. More...

Constructor & Destructor Documentation

◆ mrptEventGLPreRender()

mrpt::opengl::mrptEventGLPreRender::mrptEventGLPreRender ( const COpenGLViewport obj)

Definition at line 388 of file COpenGLViewport.h.

Member Function Documentation

◆ do_nothing()

void mrpt::opengl::mrptEventGLPreRender::do_nothing ( )

Just to allow this class to be polymorphic.

Reimplemented from mrpt::utils::mrptEvent.

Definition at line 386 of file COpenGLViewport.h.

◆ getAs()

template<class EVENTTYPE >
const EVENTTYPE* mrpt::utils::mrptEvent::getAs ( ) const

Definition at line 46 of file mrptEvent.h.

◆ getAsNonConst()

template<class EVENTTYPE >
EVENTTYPE* mrpt::utils::mrptEvent::getAsNonConst ( ) const

Definition at line 49 of file mrptEvent.h.

◆ isOfType()

template<class EVENTTYPE >
bool mrpt::utils::mrptEvent::isOfType ( ) const

Member Data Documentation

◆ source_viewport

const COpenGLViewport* const mrpt::opengl::mrptEventGLPreRender::source_viewport

Definition at line 389 of file COpenGLViewport.h.

◆ timestamp

mrpt::system::TTimeStamp mrpt::utils::mrptEvent::timestamp

Definition at line 51 of file mrptEvent.h.

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