#include <GlScene.h>

Inherits tlp::Observable.

Public Member Functions
	GlScene (GlLODCalculator *calculator=NULL)

void	addExistingLayer (GlLayer *layer)

bool	addExistingLayerAfter (GlLayer *layer, const std::string &afterLayerWithName)

bool	addExistingLayerBefore (GlLayer *layer, const std::string &beforeLayerWithName)

void	ajustSceneToSize (int width, int height)

void	centerScene ()

void	clearLayersList ()

void	computeAjustSceneToSize (int width, int height, Coord center, Coord eye, float sceneRadius, float xWhiteFactor, float yWhiteFactor, BoundingBox sceneBoundingBox=NULL, float *zoomFactor=NULL)

GlLayer *	createLayer (const std::string &name)

GlLayer *	createLayerAfter (const std::string &layerName, const std::string &afterLayerWithName)

GlLayer *	createLayerBefore (const std::string &layerName, const std::string &beforeLayerWithName)

void	draw ()

Color	getBackgroundColor () const

BoundingBox	getBoundingBox ()

GlLODCalculator *	getCalculator ()

bool	getClearBufferAtDraw () const

GlGraphComposite *	getGlGraphComposite ()

Camera &	getGraphCamera ()

GlLayer *	getGraphLayer ()

unsigned char *	getImage ()

GlLayer *	getLayer (const std::string &name)

const std::vector< std::pair < std::string, GlLayer * > > &	getLayersList ()

Vector< int, 4 >	getViewport () const

void	getXML (std::string &out)

void	getXMLOnlyForCameras (std::string &out)

void	initGlParameters ()

bool	isViewOrtho ()

void	outputEPS (unsigned int size, const std::string &filename)

void	outputSVG (unsigned int size, const std::string &filename)

void	removeLayer (const std::string &name, bool deleteLayer=true)

void	removeLayer (GlLayer *layer, bool deleteLayer=true)

void	rotateScene (const int x, const int y, const int z)

bool	selectEntities (RenderingEntitiesFlag type, int x, int y, int h, int w, GlLayer *layer, std::vector< SelectedEntity > &selectedEntities)

void	setBackgroundColor (const Color &color)

void	setCalculator (GlLODCalculator *calculator)

void	setClearBufferAtDraw (bool clear)

void	setGraphCamera (Camera *camera)

void	setViewOrtho (bool viewOrtho)

void	setViewport (Vector< int, 4 > &newViewport)

void	setViewport (int x, int y, int width, int height)

void	setWithXML (std::string &in, Graph *graph)

void	translateCamera (const int x, const int y, const int z)

void	zoom (float factor, const Coord &dest)

void	zoom (int step)

void	zoomXY (int step, const int x, const int y)

Public Member Functions inherited from tlp::Observable
void	addListener (Observable *const listener) const

void	addObserver (Observable *const observer) const

unsigned int	countListeners () const

unsigned int	countObservers () const

unsigned int	getReceived () const

unsigned int	getSent () const

void	removeListener (Observable *const listener) const

void	removeObserver (Observable *const observerver) const

Additional Inherited Members
Static Public Member Functions inherited from tlp::Observable
static Observable *	getObject (tlp::node n)

static const tlp::VectorGraph &	getObservableGraph ()

static void	holdObservers ()

static bool	isAlive (tlp::node n)

static unsigned int	observersHoldCounter ()

static void	unholdObservers ()

Protected Member Functions inherited from tlp::Observable
	Observable (const Observable &)

tlp::Iterator< tlp::Observable * > *	getObservables () const

bool	hasOnlookers () const

void	notifyObservers ()

void	observableDeleted ()

Observable &	operator= (const Observable &)

void	sendEvent (const Event &message)

virtual void	treatEvent (const Event &message)

virtual void	treatEvents (const std::vector< Event > &events)

Detailed Description

Tulip scene class.

The GlScene class is the core of the tulip rendering system This class is used to render entities and graph in OpenGL

If you want to render entities and graph, you have to use GlLayer system. You just have to create GlLayer and add GlEntity in. If you create more than one GlLayer, layers are rendered one after one, so the first GlLayer added is rendered in first.

See Also: GlLayer; GlSimpleEntity

After adding layers you can do a centerScene() and a draw()

GlLayer *mainLayer=new GlLayer("Main");
GlGraphComposite *graphComposite=new GlGraphComposite(graph);
mainLayer->addGlEntity(graphComposite,"graph");
GlLayer *otherLayer=new GlLayer("Other");
GlCircle *circle=new GlCircle();
otherLayer->addGlEntity(circle,"circle");
glScene.addLayer(mainLayer);
glScene.addLayer(otherLayer);
glScene.centerScene();
glScene.draw();

If you want to create a widget with a visualisation is better to use GlMainWidget class (this class use a GlScene inside)

Definition at line 116 of file GlScene.h.

Constructor & Destructor Documentation

tlp::GlScene::GlScene ( GlLODCalculator * calculator = NULL )

Constructor Default scene is empty.

Parameters

calculator By default GlScene use a GlCPULODCalculator to compute LOD but you can change this default lod calculator, to do that : put your calculator in constructor parameters Available calculators are : GlCPULODCalculator and GlQuadTreeLODCalculator

Member Function Documentation

void tlp::GlScene::addExistingLayer ( GlLayer * layer )

Add an existing layer in the scene Now the scene have the ownership of this GlLayer so you don't have to delete this GlLayer.

bool tlp::GlScene::addExistingLayerAfter	(	GlLayer *	layer,
		const std::string &	afterLayerWithName
	)

Add an existing layer in the scene just after layer with given name Return false if the layer with beforeLayerWithName is not find Now the scene have the ownership of this GlLayer so you don't have to delete this GlLayer.

bool tlp::GlScene::addExistingLayerBefore	(	GlLayer *	layer,
		const std::string &	beforeLayerWithName
	)

Add an existing layer in the scene just before layer with given name Return false if the layer with beforeLayerWithName is not find Now the scene have the ownership of this GlLayer so you don't have to delete this GlLayer.

void tlp::GlScene::ajustSceneToSize	(	int	width,
		int	height
	)

Ajust camera to have entities near borders

Parameters

width	requested width
height	requested height

void tlp::GlScene::centerScene ( )

Center scene After this function all entities are visible on the screen

void tlp::GlScene::clearLayersList ( )

inline

Clear layers list Layers will not be deleted in this function.

Definition at line 361 of file GlScene.h.

void tlp::GlScene::computeAjustSceneToSize	(	int	width,
		int	height,
		Coord *	center,
		Coord *	eye,
		float *	sceneRadius,
		float *	xWhiteFactor,
		float *	yWhiteFactor,
		BoundingBox *	sceneBoundingBox = `NULL`,
		float *	zoomFactor = `NULL`
	)

Compute informations for ajustSceneToSize

Parameters

width	: request width
height	: request height
center	: the result center will be stored in (if center != NULL)
eye	: the result eye will be stored in (if eye != NULL)
sceneRadius	: the result sceneRadius will be stored in (if sceneRadius != NULL)
xWhiteFactor	: xWhiteFactor is the white part on x borders (left and right), the result xWhiteFactor will be stored in (if xWhiteFactor != NULL)
yWhiteFactor	: yWhiteFactor is the white part on y borders (top and bottom), the result yWhiteFactor will be stored in (if yWhiteFactor != NULL)
sceneBoundingBox	: the result sceneBoundingBox will be stored in (if sceneBoundingBox != NULL)

GlLayer* tlp::GlScene::createLayer ( const std::string & name )

Create a layer with the given name in the scene This layer is added to the layers list Now the scene have the ownership of this GlLayer so you don't have to delete this GlLayer.

Examples:: graph_display/graph_display.cpp.

GlLayer* tlp::GlScene::createLayerAfter	(	const std::string &	layerName,
		const std::string &	afterLayerWithName
	)

Create a layer with the given name in the scene just after layer with given name This layer is added to the layers list Return NULL if the layer with beforeLayerWithName is not find Now the scene have the ownership of this GlLayer so you don't have to delete this GlLayer.

GlLayer* tlp::GlScene::createLayerBefore	(	const std::string &	layerName,
		const std::string &	beforeLayerWithName
	)

Create a layer with the given name in the scene just before layer with given name This layer is added to the layers list Return NULL if the layer with beforeLayerWithName is not find Now the scene have the ownership of this GlLayer so you don't have to delete this GlLayer.

void tlp::GlScene::draw ( )

Draw the scene This function is the most important function of GlScene. If you want to render a scene into an OpenGL widget : call this function.

Color tlp::GlScene::getBackgroundColor ( ) const

inline

Get the background color of the scene.

Definition at line 261 of file GlScene.h.

BoundingBox tlp::GlScene::getBoundingBox ( )

Return the bouding box of the scene (in 3D coordinates)

Warning: This bounding box is compute in rendering, so if you add an entity in a layer the bounding box include this entity if a draw is call

GlLODCalculator* tlp::GlScene::getCalculator ( )

inline

Return lod calculator used to render this scene.

Definition at line 386 of file GlScene.h.

bool tlp::GlScene::getClearBufferAtDraw ( ) const

inline

If false, color buffer will not be cleared before drawing the scene.

Definition at line 446 of file GlScene.h.

GlGraphComposite* tlp::GlScene::getGlGraphComposite ( )

inline

Return the current GlGraphComposite used by the scene.

Definition at line 407 of file GlScene.h.

Camera& tlp::GlScene::getGraphCamera ( )

inline

By default the most important layer is the layer where the graph is visualized This function return the camera of this layer.

Definition at line 422 of file GlScene.h.

GlLayer* tlp::GlScene::getGraphLayer ( )

inline

Return the layer containing the current GlGraphComposite.

Definition at line 414 of file GlScene.h.

unsigned char* tlp::GlScene::getImage ( )

Return the RGB image of GlScene.

GlLayer* tlp::GlScene::getLayer ( const std::string & name )

Return the layer with name : name Return NULL if the layer doesn't exist in the scene.

const std::vector<std::pair<std::string, GlLayer*> >& tlp::GlScene::getLayersList ( )

inline

Return the layer list.

Definition at line 353 of file GlScene.h.

Vector<int, 4> tlp::GlScene::getViewport ( ) const

inline

Get the viewport of the scene The viewport will be in many case the size of the widget containing the scene.

Definition at line 247 of file GlScene.h.

void tlp::GlScene::getXML ( std::string & out )

Get XML description of the scene and children and store it in out string.

void tlp::GlScene::getXMLOnlyForCameras ( std::string & out )

Get XML description of cameras of the scene and store it in out string.

void tlp::GlScene::initGlParameters ( )

Init scene's OpenGL parameters. You don't have to call this function, it is call when you do a draw.

bool tlp::GlScene::isViewOrtho ( )

inline

Scene is render in orthogonal mode ?

Definition at line 275 of file GlScene.h.

void tlp::GlScene::outputEPS	(	unsigned int	size,
		const std::string &	filename
	)

Output the scene in EPS.

void tlp::GlScene::outputSVG	(	unsigned int	size,
		const std::string &	filename
	)

Output the scene in SVG.

void tlp::GlScene::removeLayer	(	const std::string &	name,
		bool	deleteLayer = `true`
	)

Remove the layer with name This GlLayer is automaticaly delete If you want to keep this GlLayer you can put false to deleteLayer parameters but after that you have the ownership of the GlLayer.

void tlp::GlScene::removeLayer	(	GlLayer *	layer,
		bool	deleteLayer = `true`
	)

Remove the layer with name This GlLayer is automaticaly delete If you want to keep this GlLayer you can put false to deleteLayer parameters but after that you have the ownership of the GlLayer.

void tlp::GlScene::rotateScene	(	const int	x,
		const int	y,
		const int	z
	)

Rotate camera by (x,y,z)

Parameters

x	rotation over X axis in degree
y	rotation over Y axis in degree
z	rotation over Z axis in degree

bool tlp::GlScene::selectEntities	(	RenderingEntitiesFlag	type,
		int	x,
		int	y,
		int	h,
		int	w,
		GlLayer *	layer,
		std::vector< SelectedEntity > &	selectedEntities
	)

Select entities in scene.

Parameters

type	Entities type to select (SelectSimpleEntities,SelectNodes,SelectEdges)
x	screen coordinates
y	screen coordinates
h	height in screen coordinates
w	width in screen coordinates
layer	where the selection will be performed
selectedEntities	the result of the selection is stored on it

void tlp::GlScene::setBackgroundColor ( const Color & color )

inline

Set the background color of the scene.

Definition at line 254 of file GlScene.h.

void tlp::GlScene::setCalculator ( GlLODCalculator * calculator )

inline

Set a new lod calculator used to render this scene.

Definition at line 393 of file GlScene.h.

void tlp::GlScene::setClearBufferAtDraw ( bool clear )

inline

Set if OpenGL buffer will be cleared at draw.

Definition at line 439 of file GlScene.h.

void tlp::GlScene::setGraphCamera ( Camera * camera )

inline

By default the most important layer is the layer where the graph is visualized This function set the camera of this layer.

Definition at line 431 of file GlScene.h.

void tlp::GlScene::setViewOrtho ( bool viewOrtho )

inline

Set if scene is render in orthogonal mode.

Definition at line 268 of file GlScene.h.

void tlp::GlScene::setViewport ( Vector< int, 4 > & newViewport )

inline

Set the viewport of the scene with a vector The viewport must be in many case the size of the widget containing the scene.

Definition at line 228 of file GlScene.h.

void tlp::GlScene::setViewport	(	int	x,
		int	y,
		int	width,
		int	height
	)

inline

Set the viewport of the scene with 4 int The viewport must be in many case the size of the widget containing the scene.

Definition at line 236 of file GlScene.h.

void tlp::GlScene::setWithXML	(	std::string &	in,
		Graph *	graph
	)

Set scene's data and children with a XML.

void tlp::GlScene::translateCamera	(	const int	x,
		const int	y,
		const int	z
	)

Translate camera by (x,y,z)

void tlp::GlScene::zoom	(	float	factor,
		const Coord &	dest
	)

Zoom to given world coordinate.

Warning: factor parameter isn't be used

void tlp::GlScene::zoom ( int step )

Zoom by step.

Parameters

step	fator of zoom, must be >= 0

void tlp::GlScene::zoomXY	(	int	step,
		const int	x,
		const int	y
	)

Zoom to given x,y screen coordinates.

Parameters

step	fator of zoom, must be >= 0

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation