osg::Node*
GeometryCompiler::compile(FeatureList& workingSet,
const Style& style,
const FilterContext& context)
{
#ifdef PROFILING
osg::Timer_t p_start = osg::Timer::instance()->tick();
unsigned p_features = workingSet.size();
#endif
// for debugging/validation.
std::vector<std::string> history;
bool trackHistory = (_options.validate() == true);
osg::ref_ptr<osg::Group> resultGroup = new osg::Group();
// create a filter context that will track feature data through the process
FilterContext sharedCX = context;
if ( !sharedCX.extent().isSet() && sharedCX.profile() )
{
sharedCX.extent() = sharedCX.profile()->getExtent();
}
// ref_ptr's to hold defaults in case we need them.
osg::ref_ptr<PointSymbol> defaultPoint;
osg::ref_ptr<LineSymbol> defaultLine;
osg::ref_ptr<PolygonSymbol> defaultPolygon;
// go through the Style and figure out which filters to use.
const PointSymbol* point = style.get<PointSymbol>();
const LineSymbol* line = style.get<LineSymbol>();
const PolygonSymbol* polygon = style.get<PolygonSymbol>();
const ExtrusionSymbol* extrusion = style.get<ExtrusionSymbol>();
const AltitudeSymbol* altitude = style.get<AltitudeSymbol>();
const TextSymbol* text = style.get<TextSymbol>();
const MarkerSymbol* marker = style.get<MarkerSymbol>(); // to be deprecated
const IconSymbol* icon = style.get<IconSymbol>();
const ModelSymbol* model = style.get<ModelSymbol>();
// Perform tessellation first.
if ( line )
{
if ( line->tessellation().isSet() )
{
TemplateFeatureFilter<TessellateOperator> filter;
filter.setNumPartitions( *line->tessellation() );
filter.setDefaultGeoInterp( _options.geoInterp().get() );
sharedCX = filter.push( workingSet, sharedCX );
if ( trackHistory ) history.push_back( "tessellation" );
}
else if ( line->tessellationSize().isSet() )
{
TemplateFeatureFilter<TessellateOperator> filter;
filter.setMaxPartitionSize( *line->tessellationSize() );
filter.setDefaultGeoInterp( _options.geoInterp().get() );
sharedCX = filter.push( workingSet, sharedCX );
if ( trackHistory ) history.push_back( "tessellationSize" );
}
}
// if the style was empty, use some defaults based on the geometry type of the
// first feature.
if ( !point && !line && !polygon && !marker && !extrusion && !text && !model && !icon && workingSet.size() > 0 )
{
Feature* first = workingSet.begin()->get();
Geometry* geom = first->getGeometry();
if ( geom )
{
switch( geom->getComponentType() )
{
case Geometry::TYPE_LINESTRING:
case Geometry::TYPE_RING:
defaultLine = new LineSymbol();
line = defaultLine.get();
break;
case Geometry::TYPE_POINTSET:
defaultPoint = new PointSymbol();
point = defaultPoint.get();
break;
case Geometry::TYPE_POLYGON:
defaultPolygon = new PolygonSymbol();
polygon = defaultPolygon.get();
break;
case Geometry::TYPE_MULTI:
case Geometry::TYPE_UNKNOWN:
break;
}
}
}
// resample the geometry if necessary:
if (_options.resampleMode().isSet())
{
ResampleFilter resample;
resample.resampleMode() = *_options.resampleMode();
if (_options.resampleMaxLength().isSet())
{
resample.maxLength() = *_options.resampleMaxLength();
}
sharedCX = resample.push( workingSet, sharedCX );
if ( trackHistory ) history.push_back( "resample" );
}
// check whether we need to do elevation clamping:
bool altRequired =
_options.ignoreAltitudeSymbol() != true &&
altitude && (
altitude->clamping() != AltitudeSymbol::CLAMP_NONE ||
altitude->verticalOffset().isSet() ||
altitude->verticalScale().isSet() ||
altitude->script().isSet() );
// marker substitution -- to be deprecated in favor of model/icon
if ( marker )
{
if ( trackHistory ) history.push_back( "marker" );
// use a separate filter context since we'll be munging the data
FilterContext markerCX = sharedCX;
if ( marker->placement() == MarkerSymbol::PLACEMENT_RANDOM ||
marker->placement() == MarkerSymbol::PLACEMENT_INTERVAL )
{
ScatterFilter scatter;
scatter.setDensity( *marker->density() );
scatter.setRandom( marker->placement() == MarkerSymbol::PLACEMENT_RANDOM );
scatter.setRandomSeed( *marker->randomSeed() );
markerCX = scatter.push( workingSet, markerCX );
if ( trackHistory ) history.push_back( "scatter" );
}
else if ( marker->placement() == MarkerSymbol::PLACEMENT_CENTROID )
{
CentroidFilter centroid;
markerCX = centroid.push( workingSet, markerCX );
if ( trackHistory ) history.push_back( "centroid" );
}
if ( altRequired )
{
AltitudeFilter clamp;
clamp.setPropertiesFromStyle( style );
markerCX = clamp.push( workingSet, markerCX );
if ( trackHistory ) history.push_back( "altitude" );
// don't set this; we changed the input data.
//altRequired = false;
}
SubstituteModelFilter sub( style );
sub.setClustering( *_options.clustering() );
sub.setUseDrawInstanced( *_options.instancing() );
if ( _options.featureName().isSet() )
sub.setFeatureNameExpr( *_options.featureName() );
osg::Node* node = sub.push( workingSet, markerCX );
if ( node )
{
if ( trackHistory ) history.push_back( "substitute" );
resultGroup->addChild( node );
}
}
// instance substitution (replaces marker)
else if ( model )
{
const InstanceSymbol* instance = model ? (const InstanceSymbol*)model : (const InstanceSymbol*)icon;
// use a separate filter context since we'll be munging the data
FilterContext localCX = sharedCX;
if ( trackHistory ) history.push_back( "model");
if ( instance->placement() == InstanceSymbol::PLACEMENT_RANDOM ||
instance->placement() == InstanceSymbol::PLACEMENT_INTERVAL )
{
ScatterFilter scatter;
scatter.setDensity( *instance->density() );
scatter.setRandom( instance->placement() == InstanceSymbol::PLACEMENT_RANDOM );
scatter.setRandomSeed( *instance->randomSeed() );
localCX = scatter.push( workingSet, localCX );
if ( trackHistory ) history.push_back( "scatter" );
}
else if ( instance->placement() == InstanceSymbol::PLACEMENT_CENTROID )
{
CentroidFilter centroid;
localCX = centroid.push( workingSet, localCX );
if ( trackHistory ) history.push_back( "centroid" );
}
if ( altRequired )
{
AltitudeFilter clamp;
clamp.setPropertiesFromStyle( style );
localCX = clamp.push( workingSet, localCX );
if ( trackHistory ) history.push_back( "altitude" );
}
SubstituteModelFilter sub( style );
// activate clustering
sub.setClustering( *_options.clustering() );
// activate draw-instancing
sub.setUseDrawInstanced( *_options.instancing() );
// activate feature naming
if ( _options.featureName().isSet() )
sub.setFeatureNameExpr( *_options.featureName() );
osg::Node* node = sub.push( workingSet, localCX );
if ( node )
{
if ( trackHistory ) history.push_back( "substitute" );
resultGroup->addChild( node );
// enable auto scaling on the group?
if ( model && model->autoScale() == true )
{
resultGroup->getOrCreateStateSet()->setRenderBinDetails(0, osgEarth::AUTO_SCALE_BIN );
}
}
}
// extruded geometry
if ( extrusion )
{
if ( altRequired )
{
AltitudeFilter clamp;
clamp.setPropertiesFromStyle( style );
sharedCX = clamp.push( workingSet, sharedCX );
if ( trackHistory ) history.push_back( "altitude" );
altRequired = false;
}
ExtrudeGeometryFilter extrude;
extrude.setStyle( style );
// apply per-feature naming if requested.
if ( _options.featureName().isSet() )
extrude.setFeatureNameExpr( *_options.featureName() );
if ( _options.mergeGeometry().isSet() )
extrude.setMergeGeometry( *_options.mergeGeometry() );
osg::Node* node = extrude.push( workingSet, sharedCX );
if ( node )
{
if ( trackHistory ) history.push_back( "extrude" );
resultGroup->addChild( node );
}
}
// simple geometry
else if ( point || line || polygon )
{
if ( altRequired )
{
AltitudeFilter clamp;
clamp.setPropertiesFromStyle( style );
sharedCX = clamp.push( workingSet, sharedCX );
if ( trackHistory ) history.push_back( "altitude" );
altRequired = false;
}
BuildGeometryFilter filter( style );
filter.maxGranularity() = *_options.maxGranularity();
filter.geoInterp() = *_options.geoInterp();
if ( _options.featureName().isSet() )
filter.featureName() = *_options.featureName();
osg::Node* node = filter.push( workingSet, sharedCX );
if ( node )
{
if ( trackHistory ) history.push_back( "geometry" );
resultGroup->addChild( node );
}
}
if ( text || icon )
{
if ( altRequired )
{
AltitudeFilter clamp;
clamp.setPropertiesFromStyle( style );
sharedCX = clamp.push( workingSet, sharedCX );
if ( trackHistory ) history.push_back( "altitude" );
altRequired = false;
}
BuildTextFilter filter( style );
osg::Node* node = filter.push( workingSet, sharedCX );
if ( node )
{
if ( trackHistory ) history.push_back( "text" );
resultGroup->addChild( node );
}
}
if (Registry::capabilities().supportsGLSL())
{
if ( _options.shaderPolicy() == SHADERPOLICY_GENERATE )
{
// no ss cache because we will optimize later.
Registry::shaderGenerator().run(
resultGroup.get(),
"osgEarth.GeomCompiler" );
}
else if ( _options.shaderPolicy() == SHADERPOLICY_DISABLE )
{
resultGroup->getOrCreateStateSet()->setAttributeAndModes(
new osg::Program(),
osg::StateAttribute::OFF | osg::StateAttribute::OVERRIDE );
if ( trackHistory ) history.push_back( "no shaders" );
}
}
// Optimize stateset sharing.
if ( _options.optimizeStateSharing() == true )
{
// Common state set cache?
osg::ref_ptr<StateSetCache> sscache;
if ( sharedCX.getSession() )
{
// with a shared cache, don't combine statesets. They may be
// in the live graph
sscache = sharedCX.getSession()->getStateSetCache();
sscache->consolidateStateAttributes( resultGroup.get() );
}
else
{
// isolated: perform full optimization
sscache = new StateSetCache();
sscache->optimize( resultGroup.get() );
}
if ( trackHistory ) history.push_back( "share state" );
}
if ( _options.optimize() == true )
{
OE_DEBUG << LC << "optimize begin" << std::endl;
// Run the optimizer on the resulting graph
int optimizations =
osgUtil::Optimizer::FLATTEN_STATIC_TRANSFORMS |
osgUtil::Optimizer::REMOVE_REDUNDANT_NODES |
osgUtil::Optimizer::COMBINE_ADJACENT_LODS |
osgUtil::Optimizer::SHARE_DUPLICATE_STATE |
osgUtil::Optimizer::MERGE_GEOMETRY |
osgUtil::Optimizer::CHECK_GEOMETRY |
osgUtil::Optimizer::MERGE_GEODES |
osgUtil::Optimizer::STATIC_OBJECT_DETECTION;
osgUtil::Optimizer opt;
opt.optimize(resultGroup.get(), optimizations);
OE_DEBUG << LC << "optimize complete" << std::endl;
if ( trackHistory ) history.push_back( "optimize" );
}
//test: dump the tile to disk
//osgDB::writeNodeFile( *(resultGroup.get()), "out.osg" );
#ifdef PROFILING
static double totalTime = 0.0;
static Threading::Mutex totalTimeMutex;
osg::Timer_t p_end = osg::Timer::instance()->tick();
double t = osg::Timer::instance()->delta_s(p_start, p_end);
totalTimeMutex.lock();
totalTime += t;
totalTimeMutex.unlock();
OE_INFO << LC
<< "features = " << p_features
<< ", time = " << t << " s. cummulative = "
<< totalTime << " s."
<< std::endl;
#endif
if ( _options.validate() == true )
{
OE_NOTICE << LC << "-- Start Debugging --\n";
std::stringstream buf;
buf << "HISTORY ";
for(std::vector<std::string>::iterator h = history.begin(); h != history.end(); ++h)
buf << ".. " << *h;
OE_NOTICE << LC << buf.str() << "\n";
osgEarth::GeometryValidator validator;
resultGroup->accept(validator);
OE_NOTICE << LC << "-- End Debugging --\n";
}
return resultGroup.release();
}
osg::Node*
GeometryCompiler::compile(FeatureList& workingSet,
const Style& style,
const FilterContext& context)
{
#ifdef PROFILING
osg::Timer_t p_start = osg::Timer::instance()->tick();
unsigned p_features = workingSet.size();
#endif
osg::ref_ptr<osg::Group> resultGroup = new osg::Group();
// create a filter context that will track feature data through the process
FilterContext sharedCX = context;
if ( !sharedCX.extent().isSet() && sharedCX.profile() )
{
sharedCX.extent() = sharedCX.profile()->getExtent();
}
// ref_ptr's to hold defaults in case we need them.
osg::ref_ptr<PointSymbol> defaultPoint;
osg::ref_ptr<LineSymbol> defaultLine;
osg::ref_ptr<PolygonSymbol> defaultPolygon;
// go through the Style and figure out which filters to use.
const PointSymbol* point = style.get<PointSymbol>();
const LineSymbol* line = style.get<LineSymbol>();
const PolygonSymbol* polygon = style.get<PolygonSymbol>();
const ExtrusionSymbol* extrusion = style.get<ExtrusionSymbol>();
const AltitudeSymbol* altitude = style.get<AltitudeSymbol>();
const TextSymbol* text = style.get<TextSymbol>();
const MarkerSymbol* marker = style.get<MarkerSymbol>(); // to be deprecated
const IconSymbol* icon = style.get<IconSymbol>();
const ModelSymbol* model = style.get<ModelSymbol>();
// check whether we need tessellation:
if ( line && line->tessellation().isSet() )
{
TemplateFeatureFilter<TessellateOperator> filter;
filter.setNumPartitions( *line->tessellation() );
sharedCX = filter.push( workingSet, sharedCX );
}
// if the style was empty, use some defaults based on the geometry type of the
// first feature.
if ( !point && !line && !polygon && !marker && !extrusion && !text && !model && !icon && workingSet.size() > 0 )
{
Feature* first = workingSet.begin()->get();
Geometry* geom = first->getGeometry();
if ( geom )
{
switch( geom->getComponentType() )
{
case Geometry::TYPE_LINESTRING:
case Geometry::TYPE_RING:
defaultLine = new LineSymbol();
line = defaultLine.get();
break;
case Geometry::TYPE_POINTSET:
defaultPoint = new PointSymbol();
point = defaultPoint.get();
break;
case Geometry::TYPE_POLYGON:
defaultPolygon = new PolygonSymbol();
polygon = defaultPolygon.get();
break;
case Geometry::TYPE_MULTI:
case Geometry::TYPE_UNKNOWN:
break;
}
}
}
// resample the geometry if necessary:
if (_options.resampleMode().isSet())
{
ResampleFilter resample;
resample.resampleMode() = *_options.resampleMode();
if (_options.resampleMaxLength().isSet())
{
resample.maxLength() = *_options.resampleMaxLength();
}
sharedCX = resample.push( workingSet, sharedCX );
}
// check whether we need to do elevation clamping:
bool altRequired =
_options.ignoreAltitudeSymbol() != true &&
altitude && (
altitude->clamping() != AltitudeSymbol::CLAMP_NONE ||
altitude->verticalOffset().isSet() ||
altitude->verticalScale().isSet() ||
altitude->script().isSet() );
// marker substitution -- to be deprecated in favor of model/icon
if ( marker )
{
// use a separate filter context since we'll be munging the data
FilterContext markerCX = sharedCX;
if ( marker->placement() == MarkerSymbol::PLACEMENT_RANDOM ||
marker->placement() == MarkerSymbol::PLACEMENT_INTERVAL )
{
ScatterFilter scatter;
scatter.setDensity( *marker->density() );
scatter.setRandom( marker->placement() == MarkerSymbol::PLACEMENT_RANDOM );
scatter.setRandomSeed( *marker->randomSeed() );
markerCX = scatter.push( workingSet, markerCX );
}
else if ( marker->placement() == MarkerSymbol::PLACEMENT_CENTROID )
{
CentroidFilter centroid;
centroid.push( workingSet, markerCX );
}
if ( altRequired )
{
AltitudeFilter clamp;
clamp.setPropertiesFromStyle( style );
markerCX = clamp.push( workingSet, markerCX );
// don't set this; we changed the input data.
//altRequired = false;
}
SubstituteModelFilter sub( style );
sub.setClustering( *_options.clustering() );
sub.setUseDrawInstanced( *_options.instancing() );
if ( _options.featureName().isSet() )
sub.setFeatureNameExpr( *_options.featureName() );
osg::Node* node = sub.push( workingSet, markerCX );
if ( node )
{
resultGroup->addChild( node );
}
}
// instance substitution (replaces marker)
else if ( model )
{
const InstanceSymbol* instance = model ? (const InstanceSymbol*)model : (const InstanceSymbol*)icon;
// use a separate filter context since we'll be munging the data
FilterContext localCX = sharedCX;
if ( instance->placement() == InstanceSymbol::PLACEMENT_RANDOM ||
instance->placement() == InstanceSymbol::PLACEMENT_INTERVAL )
{
ScatterFilter scatter;
scatter.setDensity( *instance->density() );
scatter.setRandom( instance->placement() == InstanceSymbol::PLACEMENT_RANDOM );
scatter.setRandomSeed( *instance->randomSeed() );
localCX = scatter.push( workingSet, localCX );
}
else if ( instance->placement() == InstanceSymbol::PLACEMENT_CENTROID )
{
CentroidFilter centroid;
centroid.push( workingSet, localCX );
}
if ( altRequired )
{
AltitudeFilter clamp;
clamp.setPropertiesFromStyle( style );
localCX = clamp.push( workingSet, localCX );
}
SubstituteModelFilter sub( style );
// activate clustering
sub.setClustering( *_options.clustering() );
// activate draw-instancing
sub.setUseDrawInstanced( *_options.instancing() );
// activate feature naming
if ( _options.featureName().isSet() )
sub.setFeatureNameExpr( *_options.featureName() );
osg::Node* node = sub.push( workingSet, localCX );
if ( node )
{
resultGroup->addChild( node );
// enable auto scaling on the group?
if ( model && model->autoScale() == true )
{
resultGroup->getOrCreateStateSet()->setRenderBinDetails(0, osgEarth::AUTO_SCALE_BIN );
}
}
}
// extruded geometry
if ( extrusion )
{
if ( altRequired )
{
AltitudeFilter clamp;
clamp.setPropertiesFromStyle( style );
sharedCX = clamp.push( workingSet, sharedCX );
altRequired = false;
}
ExtrudeGeometryFilter extrude;
extrude.setStyle( style );
// Activate texture arrays if the GPU supports them and if the user
// hasn't disabled them.
extrude.useTextureArrays() =
Registry::capabilities().supportsTextureArrays() &&
_options.useTextureArrays() == true;
// apply per-feature naming if requested.
if ( _options.featureName().isSet() )
extrude.setFeatureNameExpr( *_options.featureName() );
if ( _options.useVertexBufferObjects().isSet())
extrude.useVertexBufferObjects() = *_options.useVertexBufferObjects();
osg::Node* node = extrude.push( workingSet, sharedCX );
if ( node )
{
resultGroup->addChild( node );
}
}
// simple geometry
else if ( point || line || polygon )
{
if ( altRequired )
{
AltitudeFilter clamp;
clamp.setPropertiesFromStyle( style );
sharedCX = clamp.push( workingSet, sharedCX );
altRequired = false;
}
BuildGeometryFilter filter( style );
if ( _options.maxGranularity().isSet() )
filter.maxGranularity() = *_options.maxGranularity();
if ( _options.geoInterp().isSet() )
filter.geoInterp() = *_options.geoInterp();
if ( _options.featureName().isSet() )
filter.featureName() = *_options.featureName();
osg::Node* node = filter.push( workingSet, sharedCX );
if ( node )
{
resultGroup->addChild( node );
}
}
if ( text || icon )
{
if ( altRequired )
{
AltitudeFilter clamp;
clamp.setPropertiesFromStyle( style );
sharedCX = clamp.push( workingSet, sharedCX );
altRequired = false;
}
BuildTextFilter filter( style );
osg::Node* node = filter.push( workingSet, sharedCX );
if ( node )
{
resultGroup->addChild( node );
}
}
if (Registry::capabilities().supportsGLSL())
{
if ( _options.shaderPolicy() == SHADERPOLICY_GENERATE )
{
// no ss cache because we will optimize later.
Registry::shaderGenerator().run(
resultGroup.get(),
"osgEarth.GeomCompiler" );
}
else if ( _options.shaderPolicy() == SHADERPOLICY_DISABLE )
{
resultGroup->getOrCreateStateSet()->setAttributeAndModes(
new osg::Program(),
osg::StateAttribute::OFF | osg::StateAttribute::OVERRIDE );
}
}
// Optimize stateset sharing.
if ( _options.optimizeStateSharing() == true )
{
// Common state set cache?
osg::ref_ptr<StateSetCache> sscache;
if ( sharedCX.getSession() )
{
// with a shared cache, don't combine statesets. They may be
// in the live graph
sscache = sharedCX.getSession()->getStateSetCache();
sscache->consolidateStateAttributes( resultGroup.get() );
}
else
{
// isolated: perform full optimization
sscache = new StateSetCache();
sscache->optimize( resultGroup.get() );
}
}
//test: dump the tile to disk
//osgDB::writeNodeFile( *(resultGroup.get()), "out.osg" );
#ifdef PROFILING
osg::Timer_t p_end = osg::Timer::instance()->tick();
OE_INFO << LC
<< "features = " << p_features
<< ", time = " << osg::Timer::instance()->delta_s(p_start, p_end) << " s." << std::endl;
#endif
return resultGroup.release();
}