Inheritance diagram for osgEarth::Symbology::ExtrusionSymbol:

Collaboration diagram for osgEarth::Symbology::ExtrusionSymbol:

Public Types
enum	HeightReference { HEIGHT_REFERENCE_Z, HEIGHT_REFERENCE_MSL }
Public Member Functions
	ExtrusionSymbol (const Config &conf=Config())
optional< float > &	height ()
const optional< float > &	height () const
optional< NumericExpression > &	heightExpression ()
const optional < NumericExpression > &	heightExpression () const
optional< HeightReference > &	heightReference ()
const optional< HeightReference > &	heightReference () const
optional< bool > &	flatten ()
const optional< bool > &	flatten () const
optional< std::string > &	wallStyleName ()
const optional< std::string > &	wallStyleName () const
optional< std::string > &	roofStyleName ()
const optional< std::string > &	roofStyleName () const
virtual Config	getConfig () const
virtual void	mergeConfig (const Config &conf)
Protected Attributes
optional< float >	_height
optional< bool >	_flatten
optional< NumericExpression >	_heightExpr
optional< HeightReference >	_heightRef
optional< std::string >	_wallStyleName
optional< std::string >	_roofStyleName

Detailed Description

Symbol that directs the GeometryCompiler to create extruded 3D geometry from 2D vector data.

Definition at line 34 of file ExtrusionSymbol.

Member Enumeration Documentation

enum osgEarth::Symbology::ExtrusionSymbol::HeightReference

Enumerator:

HEIGHT_REFERENCE_Z	Means that the "height" value as provided in this symbol is expressed relative to the Z of the input geometry. This is the usual way to extrude geometry- extrude up from the geometry's base Z height. (default.)
HEIGHT_REFERENCE_MSL	Means the "height" value is expressed in absolute terms, i.e., relative to MSL (mean sea level, which is usually the map's ellipsoid). If your height value is an absolute elevation, use this to "extrude down" to the terrain.

Definition at line 38 of file ExtrusionSymbol.

        {
            HEIGHT_REFERENCE_Z,

            HEIGHT_REFERENCE_MSL
        };

Constructor & Destructor Documentation

ExtrusionSymbol::ExtrusionSymbol ( const Config & conf = Config() )

Definition at line 24 of file ExtrusionSymbol.cpp.

                                                     :
Symbol    ( conf ),
_height   ( 10.0 ),
_flatten  ( true ),
_heightRef( HEIGHT_REFERENCE_Z )
{
    if ( !conf.empty() )
        mergeConfig(conf);
}

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Member Function Documentation

optional<bool>& osgEarth::Symbology::ExtrusionSymbol::flatten ( ) [inline]

Whether the top cap of the extruded geometry should be flat (default=true)

Definition at line 69 of file ExtrusionSymbol.

{ return _flatten; }

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const optional<bool>& osgEarth::Symbology::ExtrusionSymbol::flatten ( ) const [inline]

Definition at line 70 of file ExtrusionSymbol.

{ return _flatten; }

Config ExtrusionSymbol::getConfig ( ) const [virtual]

Reimplemented from osgEarth::Symbology::Symbol.

Definition at line 35 of file ExtrusionSymbol.cpp.

{
    Config conf = Symbol::getConfig();
    conf.key() = "extrusion";
    conf.addIfSet   ( "height",            _height );
    conf.addIfSet   ( "flatten",           _flatten );
    conf.addObjIfSet( "height_expression", _heightExpr );
    conf.addIfSet   ( "height_reference", "z",   _heightRef, HEIGHT_REFERENCE_Z );
    conf.addIfSet   ( "height_reference", "msl", _heightRef, HEIGHT_REFERENCE_MSL );
    conf.addIfSet   ( "wall_style", _wallStyleName );
    conf.addIfSet   ( "roof_style", _roofStyleName );
    return conf;
}

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const optional<float>& osgEarth::Symbology::ExtrusionSymbol::height ( ) const [inline]

Definition at line 57 of file ExtrusionSymbol.

{ return _height; }

optional<float>& osgEarth::Symbology::ExtrusionSymbol::height ( ) [inline]

Height to which to extrude geometry above the footprint (for HEIGHT_REFERENCE_Z) or above MSL (for HEIGHT_REFERENCE_MSL)

Definition at line 56 of file ExtrusionSymbol.

{ return _height; }

const optional<NumericExpression>& osgEarth::Symbology::ExtrusionSymbol::heightExpression ( ) const [inline]

Definition at line 61 of file ExtrusionSymbol.

{ return _heightExpr; }

optional<NumericExpression>& osgEarth::Symbology::ExtrusionSymbol::heightExpression ( ) [inline]

Simple expression to evaluate to get height

Definition at line 60 of file ExtrusionSymbol.

{ return _heightExpr; }

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optional<HeightReference>& osgEarth::Symbology::ExtrusionSymbol::heightReference ( ) [inline]

Reference frame in which height is expressed

Definition at line 65 of file ExtrusionSymbol.

{ return _heightRef; }

const optional<HeightReference>& osgEarth::Symbology::ExtrusionSymbol::heightReference ( ) const [inline]

Definition at line 66 of file ExtrusionSymbol.

{ return _heightRef; }

void ExtrusionSymbol::mergeConfig ( const Config & conf ) [virtual]

Definition at line 50 of file ExtrusionSymbol.cpp.

{
    conf.getIfSet   ( "height",  _height );
    conf.getIfSet   ( "flatten", _flatten );
    conf.getObjIfSet( "height_expression", _heightExpr );
    conf.getIfSet   ( "height_reference", "z",   _heightRef, HEIGHT_REFERENCE_Z );
    conf.getIfSet   ( "height_reference", "msl", _heightRef, HEIGHT_REFERENCE_MSL );
    conf.getIfSet   ( "wall_style", _wallStyleName );
    conf.getIfSet   ( "roof_style", _roofStyleName );
}