Menge::SceneGraph::SelectContext Class Reference

A context that performs object selection by directly clicking on selectable entities in the OpenGL context. More...

#include <Context.h>

Inheritance diagram for Menge::SceneGraph::SelectContext:

Public Member Functions
virtual bool	selectGL (const GLScene *scene, const GLCamera &camera, int vWidth, int vHeight, int *selectPoint)
	Performs selection based on a click on screen space. Uses the OpenGL selection mechanism. More...
Public Member Functions inherited from Menge::SceneGraph::Context
	Context ()
	Constructor.
virtual	~Context ()
	Virtual destructor.
virtual void	drawGL (int vWidth, int vHeight)
	The draw function for the context. More...
virtual ContextResult	handleMouse (SDL_Event &e)
	Give the context the opportunity to respond to a mouse event. More...
virtual ContextResult	handleKeyboard (SDL_Event &e)
	Give the context the opportunity to respond to a keyboard event. More...
virtual void	update ()
	Allow the context to update any time-dependent state it might have to the given global time.
virtual void	newGLContext ()
	Callback for when the OpenGL context is changed.
virtual void	activate ()
	Called when the context is activated.
virtual void	deactivate ()
	Called when the context is deactivated.

Additional Inherited Members
Protected Member Functions inherited from Menge::SceneGraph::Context
void	uiSetup (int vWidth, int vHeight)
	UI setup - handles the configuration of the opengl context for orthographic rendering. More...
void	uiShutdown ()
	Cleans up the OpenGL state after having drawn the UI elements of the context.
virtual void	drawUIGL (int vWidth, int vHeight, bool select=false)
	Draw UI elements into the context. More...
virtual void	draw3DGL (bool select=false)
	Draw context elements into the 3D world. More...
void	getOpenGLView ()
	Updates the various view matrices: modelview, projection, and view.
void	writeText (const std::string &txt, const Vector2 &pos, bool currColor=false) const
	Writes the given text at the given location. More...
void	writeText (const std::string &txt, const Vector3 &pos, bool currColor=false) const
	Writes the given text at the given 3D location. More...
void	writeTextRadially (const std::string &txt, const Vector2 &pos, const Vector2 &dir, bool currColor=false) const
	Writes the given text at the given location, but anchored based on the radial direction given. More...
void	writeAlignedText (const std::string &txt, const Vector2 &pos, TextWriter::Alignment align, bool currColor=false) const
	Writes the given text aligned to the given location. More...
void	writeToScreen (const std::string &txt, TextWriter::Alignment align, int fontSize, float hPad=0.f, float vPad=0.f, bool currColor=false, bool trans=true) const
	Writes the given text to the screen based on the given alignment. More...
Protected Attributes inherited from Menge::SceneGraph::Context
double	_modViewMat [16]
	The current model view matrix.
double	_projMat [16]
	The current projection matrix.
int	_viewMat [4]
	The current viewport parameters.

Detailed Description

A context that performs object selection by directly clicking on selectable entities in the OpenGL context.

Member Function Documentation

bool Menge::SceneGraph::SelectContext::selectGL ( const GLScene *  scene, const GLCamera &  camera, int  vWidth, int  vHeight, int *  selectPoint  )

virtual

Performs selection based on a click on screen space. Uses the OpenGL selection mechanism.

Parameters

scene	The scene to select in.
camera	The camera.
vWidth	The width of the viewport.
vHeight	The height of the viewport.
selectPoint	The point (in screen space) at which object selection should take place.

Returns

A boolean indicating whether a redraw needs to take place.

Reimplemented from Menge::SceneGraph::Context.

Reimplemented in Menge::BaseAgentContext.

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The documentation for this class was generated from the following files:

• src/menge/MengeCore/SceneGraph/Context.h
• src/menge/MengeCore/SceneGraph/Context.cpp