osg::TileLoadBalancer::RegionLoad Class Reference

#include <OSGTileLoadBalancer.h>

List of all members.

Public Member Functions
	RegionLoad (TileGeometryLoad *load=NULL)
Real32	getCost (const RenderNode &renderNode)
Real32	getCost (const RenderNode &renderNode, const Int32 wmin[2], const Int32 wmax[2]) const
TileGeometryLoad *	getLoad (void)
void	updateCost (const Int32 wmin[2], const Int32 wmax[2])
Private Attributes
Real32	_visibleFaces
Real32	_invisibleFaces
Real32	_pixel
TileGeometryLoad *	_load

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Detailed Description

Definition at line 141 of file OSGTileLoadBalancer.h.

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Constructor & Destructor Documentation

osg::TileLoadBalancer::RegionLoad::RegionLoad

(

TileGeometryLoad *

load = NULL

)

[inline]

Constructor

Definition at line 43 of file OSGTileLoadBalancer.inl.

                                                                   :
    _load(load)
{
}

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Member Function Documentation

Real32 osg::TileLoadBalancer::RegionLoad::getCost

(

const RenderNode &

renderNode

)

[inline]

Calculate the rendering cost

Parameters:

renderNode

Node to render the geometry

Definition at line 79 of file OSGTileLoadBalancer.inl.

References _invisibleFaces, _pixel, _visibleFaces, and osg::RenderNode::estimatePerformance().

{
    return renderNode.estimatePerformance(_invisibleFaces,
                                          _visibleFaces,
                                          _pixel);
}

Real32 osg::TileLoadBalancer::RegionLoad::getCost	(	const RenderNode &	renderNode,
		const Int32	wmin[2],
		const Int32	wmax[2]
	)			const [inline]

Calculate the rendering cost for the given region

Parameters:

	renderNode	Node to render the geometry
	wmin	bottom, left corner of the area
	wmax	top, right corner of the area

Definition at line 92 of file OSGTileLoadBalancer.inl.

References _load, osg::RenderNode::estimatePerformance(), osg::TileGeometryLoad::getFaces(), and osg::TileGeometryLoad::getVisibleFraction().

{
    Int32 vismin[2];
    Int32 vismax[2];
    Real32 visibleFaces;
    Real32 invisibleFaces;
    Real32 visible;

    Real32 faces  =Real32(_load->getFaces());
    visible=_load->getVisibleFraction(wmin,wmax,vismin,vismax);
    if(visible==0.0)
        return 0.0;
    visibleFaces=faces*visible;
    invisibleFaces=faces-visibleFaces;
    Real32 pixel=Real32(
        (vismax[0] - vismin[0] + 1)*
        (vismax[1] - vismin[1] + 1));
    return renderNode.estimatePerformance(invisibleFaces,
                                          visibleFaces,
                                          pixel);
}

TileGeometryLoad * osg::TileLoadBalancer::RegionLoad::getLoad

(

void

)

[inline]

Return gemetry load info object

Definition at line 118 of file OSGTileLoadBalancer.inl.

References _load.

{
    return _load;
}

void osg::TileLoadBalancer::RegionLoad::updateCost	(	const Int32	wmin[2],
		const Int32	wmax[2]
	)			[inline]

Update region dependent values

Definition at line 50 of file OSGTileLoadBalancer.inl.

References _invisibleFaces, _load, _pixel, _visibleFaces, osg::TileGeometryLoad::getFaces(), and osg::TileGeometryLoad::getVisibleFraction().

{
    Real32 faces  =Real32(_load->getFaces());
    Real32 visible;
    Int32 vismin[2];
    Int32 vismax[2];

    visible=_load->getVisibleFraction(wmin,wmax,vismin,vismax);
    if(visible)
    {
        _visibleFaces=faces*visible;
        _invisibleFaces=faces-_visibleFaces;
        _pixel=Real32(
            (vismax[0] - vismin[0] + 1)*
            (vismax[1] - vismin[1] + 1));
    }
    else
    {
        _pixel=0;
        _invisibleFaces=0;
        _visibleFaces=0;
    }
}

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Member Data Documentation

Real32 osg::TileLoadBalancer::RegionLoad::_visibleFaces [private]

Definition at line 153 of file OSGTileLoadBalancer.h.

Referenced by getCost(), and updateCost().

Real32 osg::TileLoadBalancer::RegionLoad::_invisibleFaces [private]

Definition at line 154 of file OSGTileLoadBalancer.h.

Referenced by getCost(), and updateCost().

Real32 osg::TileLoadBalancer::RegionLoad::_pixel [private]

Definition at line 155 of file OSGTileLoadBalancer.h.

Referenced by getCost(), and updateCost().

TileGeometryLoad* osg::TileLoadBalancer::RegionLoad::_load [private]

Definition at line 156 of file OSGTileLoadBalancer.h.

Referenced by getCost(), getLoad(), and updateCost().

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

• OSGTileLoadBalancer.h
• OSGTileLoadBalancer.inl