osgEarth::Symbology::ConstGeometryIterator Class Reference

Collaboration diagram for osgEarth::Symbology::ConstGeometryIterator:

List of all members.

Public Member Functions
	ConstGeometryIterator (const Geometry *geom, bool traversePolygonHoles=true)
bool	hasMore () const
const Geometry *	next ()
Private Member Functions
void	fetchNext ()
Private Attributes
const Geometry *	_next
std::stack< const Geometry * >	_stack
bool	_traverseMulti
bool	_traversePolyHoles

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Detailed Description

Definition at line 353 of file Geometry.

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Constructor & Destructor Documentation

ConstGeometryIterator::ConstGeometryIterator	(	const Geometry *	geom,
		bool	traversePolygonHoles = true
	)

New iterator.

traversePolyHoles: set to TRUE to return Polygons AND Polygon hole geometries; set to FALSE to only return Polygon (outer ring).

traverseMultiGeometry: set to TRUE to return MG children, but never an MG itself; set to FALSE to return MGs and NOT their children.

Definition at line 721 of file Geometry.cpp.

                                                                               :
_next( 0L ),
_traverseMulti( true ),
_traversePolyHoles( holes )
{
    if ( geom )
    {
        _stack.push( geom );
        fetchNext();
    }
}

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Member Function Documentation

void ConstGeometryIterator::fetchNext

(

)

[private]

Definition at line 748 of file Geometry.cpp.

{
    _next = 0L;
    if ( _stack.size() == 0 )
        return;

    const Geometry* current = _stack.top();
    _stack.pop();

    if ( current->getType() == Geometry::TYPE_MULTI && _traverseMulti )
    {
        const MultiGeometry* m = static_cast<const MultiGeometry*>(current);
        for( GeometryCollection::const_iterator i = m->getComponents().begin(); i != m->getComponents().end(); ++i )
            _stack.push( i->get() );
        fetchNext();
    }
    else if ( current->getType() == Geometry::TYPE_POLYGON && _traversePolyHoles )
    {
        const Polygon* p = static_cast<const Polygon*>(current);
        for( RingCollection::const_iterator i = p->getHoles().begin(); i != p->getHoles().end(); ++i )
            _stack.push( i->get() );
        _next = current;
    }
    else
    {
        _next = current;
    }    
}

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bool ConstGeometryIterator::hasMore

(

)

const

Definition at line 734 of file Geometry.cpp.

{
    return _next != 0L;
}

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const Geometry * ConstGeometryIterator::next

(

)

Definition at line 740 of file Geometry.cpp.

{
    const Geometry* n = _next;
    fetchNext();
    return n;
}

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Member Data Documentation

const Geometry* osgEarth::Symbology::ConstGeometryIterator::_next [private]

Definition at line 373 of file Geometry.

std::stack<const Geometry*> osgEarth::Symbology::ConstGeometryIterator::_stack [private]

Definition at line 374 of file Geometry.

bool osgEarth::Symbology::ConstGeometryIterator::_traverseMulti [private]

Definition at line 375 of file Geometry.

bool osgEarth::Symbology::ConstGeometryIterator::_traversePolyHoles [private]

Definition at line 376 of file Geometry.

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

• /home/cube/sources/osgearth/src/osgEarthSymbology/Geometry
• /home/cube/sources/osgearth/src/osgEarthSymbology/Geometry.cpp