void
KML_Placemark::build( xml_node<>* node, KMLContext& cx )
{
Style masterStyle;
std::string styleUrl = getValue(node, "styleurl");
if (!styleUrl.empty())
{ // process a "stylesheet" style
const Style* ref_style = cx._sheet->getStyle( styleUrl, false );
if (ref_style)
{
masterStyle = masterStyle.combineWith(*ref_style);
}
}
xml_node<>* style = node->first_node("style", 0, false);
if ( style )
{ // process an "inline" style
KML_Style kmlStyle;
kmlStyle.scan(style, cx);
masterStyle = masterStyle.combineWith(cx._activeStyle);
}
// parse the geometry. the placemark must have geometry to be valid. The
// geometry parse may optionally specify an altitude mode as well.
KML_Geometry geometry;
geometry.build(node, cx, masterStyle);
Geometry* allGeom = geometry._geom.get();
if ( allGeom )
{
GeometryIterator giter( allGeom, false );
while( giter.hasMore() )
{
Geometry* geom = giter.next();
Style style = masterStyle;
AltitudeSymbol* alt = style.get<AltitudeSymbol>();
if ( geom && geom->getTotalPointCount() > 0 )
{
// resolve the proper altitude mode for the anchor point
AltitudeMode altMode = ALTMODE_RELATIVE;
if (alt &&
!alt->clamping().isSetTo( alt->CLAMP_TO_TERRAIN ) &&
!alt->clamping().isSetTo( alt->CLAMP_RELATIVE_TO_TERRAIN ) )
{
altMode = ALTMODE_ABSOLUTE;
}
GeoPoint position(cx._srs.get(), geom->getBounds().center(), altMode);
bool isPoly = geom->getComponentType() == Geometry::TYPE_POLYGON;
bool isPoint = geom->getComponentType() == Geometry::TYPE_POINTSET;
// check for symbols.
ModelSymbol* model = style.get<ModelSymbol>();
IconSymbol* icon = style.get<IconSymbol>();
TextSymbol* text = style.get<TextSymbol>();
// the annotation name:
std::string name = getValue(node, "name");
AnnotationNode* featureNode = 0L;
AnnotationNode* iconNode = 0L;
AnnotationNode* modelNode = 0L;
// one coordinate? It's a place marker or a label.
if ( (model || icon || text) && geom->getTotalPointCount() == 1 )
{
// load up the default icon if there we don't have one.
if ( !model && !icon )
{
icon = cx._options->defaultIconSymbol().get();
if ( icon )
style.add( icon );
}
// if there's a model, render that - models do NOT get labels.
if ( model )
{
ModelNode* node = new ModelNode( cx._mapNode, style, cx._dbOptions );
node->setPosition( position );
// model scale:
if ( cx._options->modelScale() != 1.0f )
{
float s = *cx._options->modelScale();
node->setScale( osg::Vec3f(s,s,s) );
}
// model local tangent plane rotation:
if ( !cx._options->modelRotation()->zeroRotation() )
{
node->setLocalRotation( *cx._options->modelRotation() );
}
modelNode = node;
}
// is there a label?
else if ( !name.empty() )
{
if ( !text && cx._options->defaultTextSymbol().valid() )
{
text = cx._options->defaultTextSymbol().get();
style.addSymbol( text );
}
else
{
text = style.getOrCreate<TextSymbol>();
text->encoding() = TextSymbol::ENCODING_UTF8;
}
text->content()->setLiteral( name );
}
// is there an icon?
if ( icon )
{
iconNode = new PlaceNode( cx._mapNode, position, style, cx._dbOptions );
}
else if ( !model && text && !name.empty() )
{
// note: models do not get labels.
iconNode = new LabelNode( cx._mapNode, position, style );
}
}
// multiple coords? feature:
if ( geom->getTotalPointCount() > 1 )
{
ExtrusionSymbol* extruded = style.get<ExtrusionSymbol>();
// Remove symbols that we have already processed so the geometry
// compiler doesn't get confused.
if ( model )
style.removeSymbol( model );
if ( icon )
style.removeSymbol( icon );
if ( text )
style.removeSymbol( text );
Feature* feature = new Feature(geom, cx._srs.get(), style);
featureNode = new FeatureNode( cx._mapNode, feature );
}
// assemble the results:
if ( (iconNode || modelNode) && featureNode )
{
osg::Group* group = new osg::Group();
group->addChild( featureNode );
if ( iconNode )
group->addChild( iconNode );
if ( modelNode )
group->addChild( modelNode );
cx._groupStack.top()->addChild( group );
if ( iconNode && cx._options->declutter() == true )
{
Decluttering::setEnabled( iconNode->getOrCreateStateSet(), true );
}
if ( iconNode )
KML_Feature::build( node, cx, iconNode );
if ( modelNode )
KML_Feature::build( node, cx, modelNode );
if ( featureNode )
KML_Feature::build( node, cx, featureNode );
}
else
{
if ( iconNode )
{
if ( cx._options->iconAndLabelGroup().valid() )
{
cx._options->iconAndLabelGroup()->addChild( iconNode );
}
else
{
cx._groupStack.top()->addChild( iconNode );
if ( cx._options->declutter() == true )
{
Decluttering::setEnabled( iconNode->getOrCreateStateSet(), true );
}
}
KML_Feature::build( node, cx, iconNode );
}
if ( modelNode )
{
cx._groupStack.top()->addChild( modelNode );
KML_Feature::build( node, cx, modelNode );
}
if ( featureNode )
{
cx._groupStack.top()->addChild( featureNode );
KML_Feature::build( node, cx, featureNode );
}
}
}
}
}
}
void
KML_Placemark::build( const Config& conf, KMLContext& cx )
{
Style masterStyle;
if ( conf.hasValue("styleurl") )
{
// process a "stylesheet" style
const Style* ref_style = cx._sheet->getStyle( conf.value("styleurl"), false );
if ( ref_style )
masterStyle = *ref_style;
}
else if ( conf.hasChild("style") )
{
// process an "inline" style
KML_Style kmlStyle;
kmlStyle.scan( conf.child("style"), cx );
masterStyle = cx._activeStyle;
}
// parse the geometry. the placemark must have geometry to be valid. The
// geometry parse may optionally specify an altitude mode as well.
KML_Geometry geometry;
geometry.build(conf, cx, masterStyle);
Geometry* allGeom = geometry._geom.get();
if ( allGeom )
{
GeometryIterator giter( allGeom, false );
while( giter.hasMore() )
{
Geometry* geom = giter.next();
Style style = masterStyle;
// KML's default altitude mode is clampToGround.
AltitudeMode altMode = ALTMODE_RELATIVE;
AltitudeSymbol* altSym = style.get<AltitudeSymbol>();
if ( !altSym )
{
altSym = style.getOrCreate<AltitudeSymbol>();
altSym->clamping() = AltitudeSymbol::CLAMP_RELATIVE_TO_TERRAIN;
altSym->technique() = AltitudeSymbol::TECHNIQUE_SCENE;
}
else if ( !altSym->clamping().isSetTo(AltitudeSymbol::CLAMP_RELATIVE_TO_TERRAIN) )
{
altMode = ALTMODE_ABSOLUTE;
}
if ( geom && geom->getTotalPointCount() > 0 )
{
GeoPoint position(cx._srs.get(), geom->getBounds().center(), altMode);
bool isPoly = geom->getComponentType() == Geometry::TYPE_POLYGON;
bool isPoint = geom->getComponentType() == Geometry::TYPE_POINTSET;
// check for symbols.
ModelSymbol* model = style.get<ModelSymbol>();
IconSymbol* icon = style.get<IconSymbol>();
TextSymbol* text = style.get<TextSymbol>();
if ( !text && cx._options->defaultTextSymbol().valid() )
text = cx._options->defaultTextSymbol().get();
// the annotation name:
std::string name = conf.hasValue("name") ? conf.value("name") : "";
if ( text && !name.empty() )
{
text->content()->setLiteral( name );
}
AnnotationNode* featureNode = 0L;
AnnotationNode* iconNode = 0L;
AnnotationNode* modelNode = 0L;
// one coordinate? It's a place marker or a label.
if ( model || icon || text || geom->getTotalPointCount() == 1 )
{
// load up the default icon if there we don't have one.
if ( !model && !icon )
{
icon = cx._options->defaultIconSymbol().get();
if ( icon )
style.add( icon );
}
// if there's a model, render that - models do NOT get labels.
if ( model )
{
ModelNode* node = new ModelNode( cx._mapNode, style, cx._dbOptions );
node->setPosition( position );
if ( cx._options->modelScale() != 1.0f )
{
float s = *cx._options->modelScale();
node->setScale( osg::Vec3f(s,s,s) );
}
if ( !cx._options->modelRotation()->zeroRotation() )
{
node->setLocalRotation( *cx._options->modelRotation() );
}
modelNode = node;
}
else if ( !text && !name.empty() )
{
text = style.getOrCreate<TextSymbol>();
text->content()->setLiteral( name );
}
if ( icon )
{
iconNode = new PlaceNode( cx._mapNode, position, style, cx._dbOptions );
}
else if ( !model && text && !name.empty() )
{
// note: models do not get labels.
iconNode = new LabelNode( cx._mapNode, position, style );
}
}
// multiple coords? feature:
if ( geom->getTotalPointCount() > 1 )
{
ExtrusionSymbol* extruded = style.get<ExtrusionSymbol>();
AltitudeSymbol* altitude = style.get<AltitudeSymbol>();
// Remove symbols that we have already processed so the geometry
// compiler doesn't get confused.
if ( model )
style.removeSymbol( model );
if ( icon )
style.removeSymbol( icon );
if ( text )
style.removeSymbol( text );
// analyze the data; if the Z coords are all 0.0, enable draping.
if ( /*isPoly &&*/ !extruded && altitude && altitude->clamping() != AltitudeSymbol::CLAMP_TO_TERRAIN )
{
bool zeroElev = true;
ConstGeometryIterator gi( geom, false );
while( zeroElev == true && gi.hasMore() )
{
const Geometry* g = gi.next();
for( Geometry::const_iterator ji = g->begin(); ji != g->end() && zeroElev == true; ++ji )
{
if ( !osg::equivalent(ji->z(), 0.0) )
zeroElev = false;
}
}
if ( zeroElev )
{
altitude->clamping() = AltitudeSymbol::CLAMP_TO_TERRAIN;
altitude->technique() = AltitudeSymbol::TECHNIQUE_GPU;
}
}
// Make a feature node; drape if we're not extruding.
bool draped =
isPoly &&
!extruded &&
(!altitude || altitude->clamping() == AltitudeSymbol::CLAMP_TO_TERRAIN);
if ( draped && style.get<LineSymbol>() && !style.get<PolygonSymbol>() )
{
draped = false;
}
// turn off the clamping if we're draping.
if ( draped && altitude )
{
altitude->technique() = AltitudeSymbol::TECHNIQUE_DRAPE;
}
GeometryCompilerOptions compilerOptions;
// Check for point-model substitution:
if ( style.has<ModelSymbol>() )
{
compilerOptions.instancing() = true;
}
Feature* feature = new Feature(geom, cx._srs.get(), style);
featureNode = new FeatureNode( cx._mapNode, feature, draped, compilerOptions );
}
// assemble the results:
if ( (iconNode || modelNode) && featureNode )
{
osg::Group* group = new osg::Group();
group->addChild( featureNode );
if ( iconNode )
group->addChild( iconNode );
if ( modelNode )
group->addChild( modelNode );
cx._groupStack.top()->addChild( group );
if ( iconNode && cx._options->declutter() == true )
Decluttering::setEnabled( iconNode->getOrCreateStateSet(), true );
if ( iconNode )
KML_Feature::build( conf, cx, iconNode );
if ( modelNode )
KML_Feature::build( conf, cx, modelNode );
if ( featureNode )
KML_Feature::build( conf, cx, featureNode );
}
else
{
if ( iconNode )
{
if ( cx._options->iconAndLabelGroup().valid() )
{
cx._options->iconAndLabelGroup()->addChild( iconNode );
}
else
{
cx._groupStack.top()->addChild( iconNode );
if ( cx._options->declutter() == true )
Decluttering::setEnabled( iconNode->getOrCreateStateSet(), true );
}
KML_Feature::build( conf, cx, iconNode );
}
if ( modelNode )
{
cx._groupStack.top()->addChild( modelNode );
KML_Feature::build( conf, cx, modelNode );
}
if ( featureNode )
{
cx._groupStack.top()->addChild( featureNode );
KML_Feature::build( conf, cx, featureNode );
}
}
}
}
}
}