osgEarth::Symbology::Polygon Class Reference

Inheritance diagram for osgEarth::Symbology::Polygon:

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List of all members.

Public Member Functions
	Polygon (int capacity=0)
	Polygon (const Polygon &rhs)
	Polygon (const Vec3dVector *toCopy)
virtual Type	getType () const
virtual int	getTotalPointCount () const
virtual unsigned	getNumGeometries () const
virtual bool	contains2D (double x, double y) const
virtual void	open ()
RingCollection &	getHoles ()
const RingCollection &	getHoles () const
Protected Attributes
RingCollection	_holes

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Detailed Description

A Polygon is a geometry that consists of one outer boundary Ring, and zero or more inner "hole" rings. The boundary ring is would CCW, and the inner "holes" are wound CW.

Definition at line 262 of file Geometry.

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Constructor & Destructor Documentation

osgEarth::Symbology::Polygon::Polygon

(

int

capacity = 0

)

[inline]

Definition at line 265 of file Geometry.

: Ring( capacity ) { }

Polygon::Polygon

(

const Polygon &

rhs

)

Definition at line 535 of file Geometry.cpp.

                                     :
Ring( rhs )
{
    for( RingCollection::const_iterator r = rhs._holes.begin(); r != rhs._holes.end(); ++r )
        _holes.push_back( new Ring(*r->get()) );
}

Polygon::Polygon

(

const Vec3dVector *

toCopy

)

Definition at line 542 of file Geometry.cpp.

                                          :
Ring( data )
{
    //nop
}

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Member Function Documentation

bool Polygon::contains2D	(	double	x,
		double	y
	)		const [virtual]

Reimplemented from osgEarth::Symbology::Ring.

Definition at line 558 of file Geometry.cpp.

{
    // first check the outer ring
    if ( !Ring::contains2D(x, y) )
        return false;

    // then check each inner ring (holes). Point has to be inside the outer ring, 
    // but NOT inside any of the holes
    for( RingCollection::const_iterator i = _holes.begin(); i != _holes.end(); ++i )
    {
        if ( i->get()->contains2D(x, y) )
            return false;
    }

    return true;
}

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const RingCollection& osgEarth::Symbology::Polygon::getHoles

(

)

const [inline]

Definition at line 282 of file Geometry.

{ return _holes; }

RingCollection& osgEarth::Symbology::Polygon::getHoles

(

)

[inline]

Definition at line 281 of file Geometry.

{ return _holes; }

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virtual unsigned osgEarth::Symbology::Polygon::getNumGeometries

(

)

const [inline, virtual]

Gets the total number of geometries; it is the total of all parts of all components. Also can be seen as the number of Geometry objects that would be returned by a full GeometryIterator.

Reimplemented from osgEarth::Symbology::Geometry.

Definition at line 273 of file Geometry.

{ return 1 + _holes.size(); }

int Polygon::getTotalPointCount

(

)

const [virtual]

Gets the total number of points in this geometry.

Reimplemented from osgEarth::Symbology::Geometry.

Definition at line 549 of file Geometry.cpp.

{
    int total = Ring::getTotalPointCount();
    for( RingCollection::const_iterator i = _holes.begin(); i != _holes.end(); ++i )
        total += i->get()->getTotalPointCount();
    return total;
}

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virtual Type osgEarth::Symbology::Polygon::getType

(

)

const [inline, virtual]

Reimplemented from osgEarth::Symbology::Ring.

Definition at line 270 of file Geometry.

{ return Geometry::TYPE_POLYGON; }

void Polygon::open

(

)

[virtual]

Reimplemented from osgEarth::Symbology::Ring.

Definition at line 576 of file Geometry.cpp.

{
    Ring::open();
    for( RingCollection::const_iterator i = _holes.begin(); i != _holes.end(); ++i )
        (*i)->open();
}

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Member Data Documentation

RingCollection osgEarth::Symbology::Polygon::_holes [protected]

Definition at line 285 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