tlp::GlCPULODCalculator Class Reference

Class used to compute LOD of GlEntities with OpenMP parallelization. More...

#include <GlCPULODCalculator.h>

Inheritance diagram for tlp::GlCPULODCalculator:

List of all members.

Public Member Functions

• GlCPULODCalculator ()
• virtual ~GlCPULODCalculator ()
• virtual GlLODCalculator * clone ()
• virtual void beginNewCamera (Camera *camera)
• virtual void addSimpleEntityBoundingBox (GlSimpleEntity *entity, const BoundingBox &bb)
• virtual void addNodeBoundingBox (unsigned int id, const BoundingBox &bb)
• virtual void addEdgeBoundingBox (unsigned int id, const BoundingBox &bb)
• virtual void reserveMemoryForNodes (unsigned int numberOfNodes)
• virtual void reserveMemoryForEdges (unsigned int numberOfEdges)
• virtual void compute (const Vector< int, 4 > &globalViewport, const Vector< int, 4 > &currentViewport)
• virtual BoundingBox getSceneBoundingBox ()
• void setComputeEdgesLOD (bool state)
• void setComputeOutScreenLOD (bool state)

Protected Member Functions

• virtual void computeFor3DCamera (LayerLODUnit *layerLODUnit, const Coord &eye, const Matrix< float, 4 > transformMatrix, const Vector< int, 4 > &globalViewport, const Vector< int, 4 > &currentViewport)
• virtual void computeFor2DCamera (LayerLODUnit *layerLODUnit, const Vector< int, 4 > &globalViewport, const Vector< int, 4 > &currentViewport)

Protected Attributes

• bool computeEdgesLOD
• bool computeOutScreenLOD
• BoundingBox sceneBoundingBox
• LayerLODUnit * currentLayerLODUnit

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Detailed Description

Class used to compute LOD of GlEntities with OpenMP parallelization.

This class perform LOD computation of GlEntities based on screen projection of entities bounding boxes

Warning:

By default this class don't compute LOD for edges (for optimisation) and return a lod of 10. to these edges, if you want to compute edges' LOD call setComputeEdgesLOD(true)

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Constructor & Destructor Documentation

tlp::GlCPULODCalculator::GlCPULODCalculator

(

)

virtual tlp::GlCPULODCalculator::~GlCPULODCalculator

(

)

[virtual]

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Member Function Documentation

virtual void tlp::GlCPULODCalculator::addEdgeBoundingBox	(	unsigned int	id,
		const BoundingBox &	bb
	)		[virtual]

This function is call by GlLODSceneVisitor when an edge is found

Reimplemented in tlp::GlQuadTreeLODCalculator.

virtual void tlp::GlCPULODCalculator::addNodeBoundingBox	(	unsigned int	id,
		const BoundingBox &	bb
	)		[virtual]

This function is call by GlLODSceneVisitor when a node is found

Reimplemented in tlp::GlQuadTreeLODCalculator.

virtual void tlp::GlCPULODCalculator::addSimpleEntityBoundingBox	(	GlSimpleEntity *	entity,
		const BoundingBox &	bb
	)		[virtual]

This function is call by GlLODSceneVisitor when a simple entitie is found

Reimplemented in tlp::GlQuadTreeLODCalculator.

virtual void tlp::GlCPULODCalculator::beginNewCamera

(

Camera *

camera

)

[virtual]

Begin a new camera (use to render next entities)

virtual GlLODCalculator* tlp::GlCPULODCalculator::clone

(

)

[inline, virtual]

Reimplemented in tlp::GlQuadTreeLODCalculator.

virtual void tlp::GlCPULODCalculator::compute	(	const Vector< int, 4 > &	globalViewport,
		const Vector< int, 4 > &	currentViewport
	)		[virtual]

Compute all bounding boxes If you want to compute LOD for a simple scene, you just have to call this function with same value on globalViewport and currentViewport But if you want to perform a sub screen part selection you have to call this function with : globalViewport the viewport of the visualisation and currentViewport the viewport of the selection

Parameters:

globalViewport	is used to compute LOD
currentViewport	: return -1 for all entities outside this viewport

Reimplemented in tlp::GlQuadTreeLODCalculator.

virtual void tlp::GlCPULODCalculator::computeFor2DCamera	(	LayerLODUnit *	layerLODUnit,
		const Vector< int, 4 > &	globalViewport,
		const Vector< int, 4 > &	currentViewport
	)		[protected, virtual]

virtual void tlp::GlCPULODCalculator::computeFor3DCamera	(	LayerLODUnit *	layerLODUnit,
		const Coord &	eye,
		const Matrix< float, 4 >	transformMatrix,
		const Vector< int, 4 > &	globalViewport,
		const Vector< int, 4 > &	currentViewport
	)		[protected, virtual]

Reimplemented in tlp::GlQuadTreeLODCalculator.

virtual BoundingBox tlp::GlCPULODCalculator::getSceneBoundingBox

(

)

[inline, virtual]

This function return the scene bounding box

virtual void tlp::GlCPULODCalculator::reserveMemoryForEdges

(

unsigned int

numberOfEdges

)

[virtual]

Reserve memory to store edges LOD, this function is an optimisation function

virtual void tlp::GlCPULODCalculator::reserveMemoryForNodes

(

unsigned int

numberOfNodes

)

[virtual]

Reserve memory to store nodes LOD, this function is an optimisation function

void tlp::GlCPULODCalculator::setComputeEdgesLOD

(

bool

state

)

[inline]

Set if the edge LOD must be calculated at default the edge LOD is not calculated and return 10.

void tlp::GlCPULODCalculator::setComputeOutScreenLOD

(

bool

state

)

[inline]

Set if the LOD is computed for out screen entities

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Member Data Documentation

bool tlp::GlCPULODCalculator::computeEdgesLOD [protected]

bool tlp::GlCPULODCalculator::computeOutScreenLOD [protected]

LayerLODUnit* tlp::GlCPULODCalculator::currentLayerLODUnit [protected]

BoundingBox tlp::GlCPULODCalculator::sceneBoundingBox [protected]