void
MapNode::init()
{
// Take a reference to this object so that it doesn't get inadvertently
// deleting during startup. It is possible that during startup, a driver
// will load that will take a reference to the MapNode (like in a
// ModelSource node operation) and we don't want that deleting the MapNode
// out from under us.
// This is paired by an unref_nodelete() at the end of this method.
this->ref();
// Protect the MapNode from the Optimizer
setDataVariance(osg::Object::DYNAMIC);
// initialize 0Ls
_terrainEngine = 0L;
_terrainEngineContainer = 0L;
_overlayDecorator = 0L;
setName( "osgEarth::MapNode" );
// Since we have global uniforms in the stateset, mark it dynamic so it is immune to
// multi-threaded overlap
// TODO: do we need this anymore? there are no more global uniforms in here.. gw
getOrCreateStateSet()->setDataVariance(osg::Object::DYNAMIC);
_modelLayerCallback = new MapModelLayerCallback(this);
_maskLayerNode = 0L;
_lastNumBlacklistedFilenames = 0;
// Set the global proxy settings
// TODO: this should probably happen elsewhere, like in the registry?
if ( _mapNodeOptions.proxySettings().isSet() )
{
HTTPClient::setProxySettings( _mapNodeOptions.proxySettings().get() );
}
// establish global driver options. These are OSG reader-writer options that
// will make their way to any read* calls down the pipe
const osgDB::Options* global_options = _map->getGlobalOptions();
osg::ref_ptr<osgDB::Options> local_options = global_options ?
Registry::instance()->cloneOrCreateOptions( global_options ) :
NULL;
if ( local_options.valid() )
{
OE_INFO << LC
<< "Options string = "
<< (local_options.valid()? local_options->getOptionString() : "<empty>")
<< std::endl;
}
// TODO: not sure why we call this here
_map->setGlobalOptions( local_options.get() );
// load and attach the terrain engine, but don't initialize it until we need it
const TerrainOptions& terrainOptions = _mapNodeOptions.getTerrainOptions();
_terrainEngine = TerrainEngineNodeFactory::create( _map.get(), terrainOptions );
_terrainEngineInitialized = false;
// the engine needs a container so we can set lighting state on the container and
// not on the terrain engine itself. Setting the dynamic variance will prevent
// an optimizer from collapsing the empty group node.
_terrainEngineContainer = new osg::Group();
_terrainEngineContainer->setDataVariance( osg::Object::DYNAMIC );
this->addChild( _terrainEngineContainer );
// initialize terrain-level lighting:
if ( terrainOptions.enableLighting().isSet() )
{
_terrainEngineContainer->getOrCreateStateSet()->setMode(
GL_LIGHTING,
terrainOptions.enableLighting().value() ? 1 : 0 );
}
if ( _terrainEngine )
{
// inform the terrain engine of the map information now so that it can properly
// initialize it's CoordinateSystemNode. This is necessary in order to support
// manipulators and to set up the texture compositor prior to frame-loop
// initialization.
_terrainEngine->preInitialize( _map.get(), terrainOptions );
_terrainEngineContainer->addChild( _terrainEngine );
}
else
{
OE_WARN << "FAILED to create a terrain engine for this map" << std::endl;
}
// make a group for the model layers.
// NOTE: for now, we are going to nullify any shader programs that occur above the model
// group, since it does not YET support shader composition. Programs defined INSIDE a
// model layer will still work OK though.
_models = new osg::Group();
_models->setName( "osgEarth::MapNode.modelsGroup" );
addChild( _models.get() );
// a decorator for overlay models:
_overlayDecorator = new OverlayDecorator();
_overlayDecorator->setOverlayGraphTraversalMask( terrainOptions.secondaryTraversalMask().value() );
// install the Draping technique for overlays:
{
DrapingTechnique* draping = new DrapingTechnique();
if ( _mapNodeOptions.overlayBlending().isSet() )
draping->setOverlayBlending( *_mapNodeOptions.overlayBlending() );
if ( _mapNodeOptions.overlayTextureSize().isSet() )
draping->setTextureSize( *_mapNodeOptions.overlayTextureSize() );
if ( _mapNodeOptions.overlayMipMapping().isSet() )
draping->setMipMapping( *_mapNodeOptions.overlayMipMapping() );
if ( _mapNodeOptions.overlayAttachStencil().isSet() )
draping->setAttachStencil( *_mapNodeOptions.overlayAttachStencil() );
_overlayDecorator->addTechnique( draping );
}
// install the Clamping technique for overlays:
{
_overlayDecorator->addTechnique( new ClampingTechnique() );
//_overlayDecorator->addTechnique( new ClampingBinTechnique() );
//...why not combine the 2 clamping techniques? use a group AND a bin?
}
addTerrainDecorator( _overlayDecorator );
// install any pre-existing model layers:
ModelLayerVector modelLayers;
_map->getModelLayers( modelLayers );
int modelLayerIndex = 0;
for( ModelLayerVector::const_iterator k = modelLayers.begin(); k != modelLayers.end(); k++, modelLayerIndex++ )
{
onModelLayerAdded( k->get(), modelLayerIndex );
}
_mapCallback = new MapNodeMapCallbackProxy(this);
// install a layer callback for processing further map actions:
_map->addMapCallback( _mapCallback.get() );
osg::StateSet* ss = getOrCreateStateSet();
if ( _mapNodeOptions.enableLighting().isSet() )
{
ss->setMode(
GL_LIGHTING,
_mapNodeOptions.enableLighting().value() ? 1 : 0 );
}
dirtyBound();
// Install top-level shader programs:
if ( Registry::capabilities().supportsGLSL() )
{
// Note. We use OVERRIDE here so that child object that use the ShaderGenerator
// don't have to worry about installing default shaders. The usage pattern is
// to use PROTECTED mode if you want to override the defaults in (say) a ModelLayer
// or in a TextureCompositor.
VirtualProgram* vp = new VirtualProgram();
vp->setName( "MapNode" );
vp->installDefaultColoringAndLightingShaders( 0, osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE );
ss->setAttributeAndModes( vp, osg::StateAttribute::ON );
}
// register for event traversals so we can deal with blacklisted filenames
ADJUST_EVENT_TRAV_COUNT( this, 1 );
// remove the temporary reference.
this->unref_nodelete();
}
void
MapNode::init()
{
// Take a reference to this object so that it doesn't get inadvertently
// deleting during startup. It is possible that during startup, a driver
// will load that will take a reference to the MapNode (like in a
// ModelSource node operation) and we don't want that deleting the MapNode
// out from under us.
// This is paired by an unref_nodelete() at the end of this method.
this->ref();
// Protect the MapNode from the Optimizer
setDataVariance(osg::Object::DYNAMIC);
// Protect the MapNode from the ShaderGenerator
ShaderGenerator::setIgnoreHint(this, true);
// initialize 0Ls
_terrainEngine = 0L;
_terrainEngineContainer = 0L;
_overlayDecorator = 0L;
setName( "osgEarth::MapNode" );
_maskLayerNode = 0L;
_lastNumBlacklistedFilenames = 0;
// Set the global proxy settings
// TODO: this should probably happen elsewhere, like in the registry?
if ( _mapNodeOptions.proxySettings().isSet() )
{
HTTPClient::setProxySettings( _mapNodeOptions.proxySettings().get() );
}
// establish global driver options. These are OSG reader-writer options that
// will make their way to any read* calls down the pipe
const osgDB::Options* global_options = _map->getGlobalOptions();
osg::ref_ptr<osgDB::Options> local_options = global_options ?
Registry::instance()->cloneOrCreateOptions( global_options ) :
NULL;
if ( local_options.valid() )
{
OE_INFO << LC
<< "Options string = "
<< (local_options.valid()? local_options->getOptionString() : "<empty>")
<< std::endl;
}
// TODO: not sure why we call this here
_map->setGlobalOptions( local_options.get() );
// load and attach the terrain engine, but don't initialize it until we need it
const TerrainOptions& terrainOptions = _mapNodeOptions.getTerrainOptions();
_terrainEngine = TerrainEngineNodeFactory::create( _map.get(), terrainOptions );
_terrainEngineInitialized = false;
// the engine needs a container so we can set lighting state on the container and
// not on the terrain engine itself. Setting the dynamic variance will prevent
// an optimizer from collapsing the empty group node.
_terrainEngineContainer = new osg::Group();
_terrainEngineContainer->setDataVariance( osg::Object::DYNAMIC );
this->addChild( _terrainEngineContainer );
// initialize terrain-level lighting:
if ( terrainOptions.enableLighting().isSet() )
{
_terrainEngineContainer->getOrCreateStateSet()->addUniform(
Registry::shaderFactory()->createUniformForGLMode(GL_LIGHTING, *terrainOptions.enableLighting()) );
_terrainEngineContainer->getOrCreateStateSet()->setMode(
GL_LIGHTING,
terrainOptions.enableLighting().value() ? 1 : 0 );
}
if ( _terrainEngine )
{
// inform the terrain engine of the map information now so that it can properly
// initialize it's CoordinateSystemNode. This is necessary in order to support
// manipulators and to set up the texture compositor prior to frame-loop
// initialization.
_terrainEngine->preInitialize( _map.get(), terrainOptions );
_terrainEngineContainer->addChild( _terrainEngine );
}
else
{
OE_WARN << "FAILED to create a terrain engine for this map" << std::endl;
}
// make a group for the model layers.
// NOTE: for now, we are going to nullify any shader programs that occur above the model
// group, since it does not YET support shader composition. Programs defined INSIDE a
// model layer will still work OK though.
_models = new osg::Group();
_models->setName( "osgEarth::MapNode.modelsGroup" );
_models->getOrCreateStateSet()->setRenderBinDetails(2, "RenderBin");
addChild( _models.get() );
// a decorator for overlay models:
_overlayDecorator = new OverlayDecorator();
// install the Draping technique for overlays:
{
DrapingTechnique* draping = new DrapingTechnique();
const char* envOverlayTextureSize = ::getenv("OSGEARTH_OVERLAY_TEXTURE_SIZE");
if ( _mapNodeOptions.overlayBlending().isSet() )
draping->setOverlayBlending( *_mapNodeOptions.overlayBlending() );
if ( envOverlayTextureSize )
draping->setTextureSize( as<int>(envOverlayTextureSize, 1024) );
else if ( _mapNodeOptions.overlayTextureSize().isSet() )
draping->setTextureSize( *_mapNodeOptions.overlayTextureSize() );
if ( _mapNodeOptions.overlayMipMapping().isSet() )
draping->setMipMapping( *_mapNodeOptions.overlayMipMapping() );
if ( _mapNodeOptions.overlayAttachStencil().isSet() )
draping->setAttachStencil( *_mapNodeOptions.overlayAttachStencil() );
if ( _mapNodeOptions.overlayResolutionRatio().isSet() )
draping->setResolutionRatio( *_mapNodeOptions.overlayResolutionRatio() );
_overlayDecorator->addTechnique( draping );
}
// install the Clamping technique for overlays:
{
_overlayDecorator->addTechnique( new ClampingTechnique() );
}
addTerrainDecorator( _overlayDecorator );
// install any pre-existing model layers:
ModelLayerVector modelLayers;
_map->getModelLayers( modelLayers );
int modelLayerIndex = 0;
for( ModelLayerVector::const_iterator k = modelLayers.begin(); k != modelLayers.end(); k++, modelLayerIndex++ )
{
onModelLayerAdded( k->get(), modelLayerIndex );
}
_mapCallback = new MapNodeMapCallbackProxy(this);
// install a layer callback for processing further map actions:
_map->addMapCallback( _mapCallback.get() );
osg::StateSet* stateset = getOrCreateStateSet();
if ( _mapNodeOptions.enableLighting().isSet() )
{
stateset->addUniform(Registry::shaderFactory()->createUniformForGLMode(
GL_LIGHTING,
_mapNodeOptions.enableLighting().value() ? 1 : 0));
stateset->setMode(
GL_LIGHTING,
_mapNodeOptions.enableLighting().value() ? 1 : 0);
}
// Add in some global uniforms
stateset->addUniform( new osg::Uniform("oe_isGeocentric", _map->isGeocentric()) );
if ( _map->isGeocentric() )
{
OE_INFO << LC << "Adding ellipsoid uniforms.\n";
// for a geocentric map, use an ellipsoid unit-frame transform and its inverse:
osg::Vec3d ellipFrameInverse(
_map->getSRS()->getEllipsoid()->getRadiusEquator(),
_map->getSRS()->getEllipsoid()->getRadiusEquator(),
_map->getSRS()->getEllipsoid()->getRadiusPolar());
stateset->addUniform( new osg::Uniform("oe_ellipsoidFrameInverse", osg::Vec3f(ellipFrameInverse)) );
osg::Vec3d ellipFrame = osg::componentDivide(osg::Vec3d(1.0,1.0,1.0), ellipFrameInverse);
stateset->addUniform( new osg::Uniform("oe_ellipsoidFrame", osg::Vec3f(ellipFrame)) );
}
// install the default rendermode uniform:
stateset->addUniform( new osg::Uniform("oe_isPickCamera", false) );
dirtyBound();
// register for event traversals so we can deal with blacklisted filenames
ADJUST_EVENT_TRAV_COUNT( this, 1 );
// remove the temporary reference.
this->unref_nodelete();
}
