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osgEarth 2.1.1
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osgEarth 2.1.1
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#include <osgEarth/MapNode>#include <osgEarthUtil/EarthManipulator>#include <osgEarthUtil/Annotation>#include <osgEarthUtil/ImageOverlay>#include <osgEarthUtil/ImageOverlayEditor>#include <osgEarthSymbology/GeometryFactory>#include <osgViewer/Viewer>#include <osgViewer/ViewerEventHandlers>#include <osgGA/StateSetManipulator>
Include dependency graph for osgearth_annotation.cpp:Go to the source code of this file.
Classes | |
| struct | ToggleNode |
Functions | |
| int | usage (char **argv) |
| int | main (int argc, char **argv) |
| int main | ( | int | argc, |
| char ** | argv | ||
| ) |
Definition at line 52 of file osgearth_annotation.cpp.
{
osg::Group* root = new osg::Group();
// try to load an earth file.
osg::ArgumentParser arguments(&argc,argv);
osg::Node* node = osgDB::readNodeFiles( arguments );
if ( !node )
return usage(argv);
// find the map node that we loaded.
MapNode* mapNode = MapNode::findMapNode(node);
if ( !mapNode )
return usage(argv);
root->addChild( mapNode );
// make some annotations.
osg::Group* annoGroup = new osg::Group();
root->addChild( annoGroup );
// a Placemark combines a 2D icon with a text label.
annoGroup->addChild( new PlacemarkNode(
mapNode,
osg::Vec3d(-74, 40.714, 0),
URI("../data/placemark32.png").readImage(),
"New York") );
// a Placemark combines a 2D icon with a text label.
annoGroup->addChild( new PlacemarkNode(
mapNode,
osg::Vec3d(139.75, 35.685, 0),
URI("../data/placemark32.png").readImage(),
"Tokyo" ) );
// a box that follows lines of latitude (rhumb line interpolation, the default)
Geometry* geom = new Ring();
geom->push_back( osg::Vec3d(0, 40, 0) );
geom->push_back( osg::Vec3d(-60, 40, 0) );
geom->push_back( osg::Vec3d(-60, 60, 0) );
geom->push_back( osg::Vec3d(0, 60, 0) );
Style geomStyle;
geomStyle.getOrCreate<LineSymbol>()->stroke()->color() = Color::Yellow;
geomStyle.getOrCreate<LineSymbol>()->stroke()->width() = 5.0f;
FeatureNode* gnode = new FeatureNode(mapNode, new Feature(geom, geomStyle), true);
annoGroup->addChild( gnode );
// another line, this time using great-circle interpolation (flight path from New York to Tokyo)
Geometry* path = new LineString();
path->push_back( osg::Vec3d(-74, 40.714, 0) ); // New York
path->push_back( osg::Vec3d(139.75, 35.685, 0) ); // Tokyo
Style pathStyle;
pathStyle.getOrCreate<LineSymbol>()->stroke()->color() = Color::Red;
pathStyle.getOrCreate<LineSymbol>()->stroke()->width() = 10.0f;
Feature* pathFeature = new Feature(path, pathStyle);
pathFeature->geoInterp() = GEOINTERP_GREAT_CIRCLE;
FeatureNode* pathNode = new FeatureNode(mapNode, pathFeature, true);
annoGroup->addChild( pathNode );
// a circle around New Orleans
Style circleStyle;
circleStyle.getOrCreate<PolygonSymbol>()->fill()->color() = Color(Color::Cyan, 0.5);
CircleNode* circle = new CircleNode(
mapNode,
osg::Vec3d(-90.25, 29.98, 0),
Linear(600, Units::KILOMETERS),
circleStyle );
annoGroup->addChild( circle );
// an ellipse around Miami
Style ellipseStyle;
ellipseStyle.getOrCreate<PolygonSymbol>()->fill()->color() = Color(Color::Orange, 0.75);
EllipseNode* ellipse = new EllipseNode(
mapNode,
osg::Vec3d(-80.28,25.82,0),
Linear(200, Units::MILES),
Linear(100, Units::MILES),
Angular(45, Units::DEGREES),
ellipseStyle,
true);
annoGroup->addChild( ellipse );
// an extruded polygon roughly the shape of Utah
Geometry* utah = new Polygon();
utah->push_back( osg::Vec3d(-114.052, 37, 0) );
utah->push_back( osg::Vec3d(-109.054, 37, 0) );
utah->push_back( osg::Vec3d(-109.054, 41, 0) );
utah->push_back( osg::Vec3d(-111.04, 41, 0) );
utah->push_back( osg::Vec3d(-111.08, 42.059, 0) );
utah->push_back( osg::Vec3d(-114.08, 42.024, 0) );
Style utahStyle;
utahStyle.getOrCreate<ExtrusionSymbol>()->height() = 250000.0; // meters MSL
utahStyle.getOrCreate<PolygonSymbol>()->fill()->color() = Color(Color::White, 0.8);
Feature* utahFeature = new Feature(utah, utahStyle);
FeatureNode* utahNode = new FeatureNode(mapNode, utahFeature, false);
annoGroup->addChild( utahNode );
// an image overlay
ImageOverlay* imageOverlay = 0L;
osg::Image* image = osgDB::readImageFile( "../data/USFLAG.TGA" );
if ( image ) {
imageOverlay = new ImageOverlay(mapNode, image);
imageOverlay->setBounds( Bounds( -100.0, 50.0, -90.0, 55.0) );
//Add an editor
annoGroup->addChild( imageOverlay );
osg::Node* editor = new ImageOverlayEditor( imageOverlay, mapNode->getMap()->getProfile()->getSRS()->getEllipsoid(), mapNode );
root->addChild( editor );
}
// initialize a viewer:
osgViewer::Viewer viewer(arguments);
viewer.setCameraManipulator( new EarthManipulator() );
viewer.setSceneData( root );
// make a little HUD to toggle stuff:
VBox* vbox = new VBox();
vbox->setBackColor( Color(Color::Black, 0.5) );
vbox->setVertAlign( Control::ALIGN_TOP );
vbox->addControl( new LabelControl("Annotation Example", 22.0f, Color::Yellow) );
Grid* grid = new Grid();
vbox->addControl( grid );
grid->setChildSpacing( 5 );
grid->setChildHorizAlign( Control::ALIGN_LEFT );
grid->setChildVertAlign( Control::ALIGN_CENTER );
grid->setControl( 0, 0, new CheckBoxControl(true, new ToggleNode(gnode)) );
grid->setControl( 1, 0, new LabelControl("Line geoemtry") );
grid->setControl( 0, 1, new CheckBoxControl(true, new ToggleNode(pathNode)) );
grid->setControl( 1, 1, new LabelControl("Red flight path") );
grid->setControl( 0, 2, new CheckBoxControl(true, new ToggleNode(circle)) );
grid->setControl( 1, 2, new LabelControl("Blue circle") );
grid->setControl( 0, 3, new CheckBoxControl(true, new ToggleNode(ellipse)) );
grid->setControl( 1, 3, new LabelControl("Orange ellipse") );
grid->setControl( 0, 4, new CheckBoxControl(true, new ToggleNode(utahNode)) );
grid->setControl( 1, 4, new LabelControl("Extruded state") );
if ( imageOverlay ) {
grid->setControl( 0, 5, new CheckBoxControl(true, new ToggleNode(imageOverlay)) );
grid->setControl( 1, 5, new LabelControl("Image overlay") );
}
ControlCanvas::get(&viewer,true)->addControl(vbox);
// add some stock OSG handlers:
viewer.getDatabasePager()->setDoPreCompile( true );
viewer.addEventHandler(new osgViewer::StatsHandler());
viewer.addEventHandler(new osgViewer::WindowSizeHandler());
viewer.addEventHandler(new osgGA::StateSetManipulator(viewer.getCamera()->getOrCreateStateSet()));
return viewer.run();
}
Here is the call graph for this function: Here is the caller graph for this function:| int usage | ( | char ** | argv | ) |
Definition at line 36 of file osgearth_annotation.cpp.
{
OE_WARN << "Usage: " << argv[0] << " <earthfile>" << std::endl;
return -1;
}
Here is the caller graph for this function:
1.7.3
