//
// NOTE: run this sample from the repo/tests directory.
//
int main(int argc, char** argv)
{
osg::ArgumentParser arguments(&argc,argv);
if ( arguments.read("--help") )
return usage( argv[0] );
bool useRaster = arguments.read("--rasterize");
bool useOverlay = arguments.read("--overlay");
bool useStencil = arguments.read("--stencil");
bool useMem = arguments.read("--mem");
bool useLabels = arguments.read("--labels");
if ( useStencil )
osg::DisplaySettings::instance()->setMinimumNumStencilBits( 8 );
osgViewer::Viewer viewer(arguments);
// Start by creating the map:
Map* map = new Map();
// Start with a basemap imagery layer; we'll be using the GDAL driver
// to load a local GeoTIFF file:
GDALOptions basemapOpt;
basemapOpt.url() = "../data/world.tif";
map->addImageLayer( new ImageLayer( ImageLayerOptions("basemap", basemapOpt) ) );
// Next we add a feature layer.
OGRFeatureOptions featureOptions;
if ( !useMem )
{
// Configures the feature driver to load the vectors from a shapefile:
featureOptions.url() = "../data/world.shp";
}
else
{
// the --mem options tells us to just make an in-memory geometry:
Ring* line = new Ring();
line->push_back( osg::Vec3d(-60, 20, 0) );
line->push_back( osg::Vec3d(-120, 20, 0) );
line->push_back( osg::Vec3d(-120, 60, 0) );
line->push_back( osg::Vec3d(-60, 60, 0) );
featureOptions.geometry() = line;
}
// Define a style for the feature data. Since we are going to render the
// vectors as lines, configure the line symbolizer:
Style style;
LineSymbol* ls = style.getOrCreateSymbol<LineSymbol>();
ls->stroke()->color() = Color::Yellow;
ls->stroke()->width() = 2.0f;
// That's it, the map is ready; now create a MapNode to render the Map:
MapNodeOptions mapNodeOptions;
mapNodeOptions.enableLighting() = false;
MapNode* mapNode = new MapNode( map, mapNodeOptions );
osg::Group* root = new osg::Group();
root->addChild( mapNode );
viewer.setSceneData( root );
viewer.setCameraManipulator( new EarthManipulator() );
// Process cmdline args
MapNodeHelper().parse(mapNode, arguments, &viewer, root, new LabelControl("Features Demo"));
if (useStencil)
{
FeatureStencilModelOptions stencilOptions;
stencilOptions.featureOptions() = featureOptions;
stencilOptions.styles() = new StyleSheet();
stencilOptions.styles()->addStyle( style );
stencilOptions.enableLighting() = false;
stencilOptions.depthTestEnabled() = false;
ls->stroke()->width() = 0.1f;
map->addModelLayer( new ModelLayer("my features", stencilOptions) );
}
else if (useRaster)
{
AGGLiteOptions rasterOptions;
rasterOptions.featureOptions() = featureOptions;
rasterOptions.styles() = new StyleSheet();
rasterOptions.styles()->addStyle( style );
map->addImageLayer( new ImageLayer("my features", rasterOptions) );
}
else //if (useGeom || useOverlay)
{
FeatureGeomModelOptions geomOptions;
geomOptions.featureOptions() = featureOptions;
geomOptions.styles() = new StyleSheet();
geomOptions.styles()->addStyle( style );
geomOptions.enableLighting() = false;
ModelLayerOptions layerOptions( "my features", geomOptions );
map->addModelLayer( new ModelLayer(layerOptions) );
}
if ( useLabels )
{
// set up symbology for drawing labels. We're pulling the label
// text from the name attribute, and its draw priority from the
// population attribute.
Style labelStyle;
TextSymbol* text = labelStyle.getOrCreateSymbol<TextSymbol>();
text->content() = StringExpression( "[cntry_name]" );
text->priority() = NumericExpression( "[pop_cntry]" );
text->removeDuplicateLabels() = true;
text->size() = 16.0f;
text->alignment() = TextSymbol::ALIGN_CENTER_CENTER;
text->fill()->color() = Color::White;
text->halo()->color() = Color::DarkGray;
// and configure a model layer:
FeatureGeomModelOptions geomOptions;
geomOptions.featureOptions() = featureOptions;
geomOptions.styles() = new StyleSheet();
geomOptions.styles()->addStyle( labelStyle );
map->addModelLayer( new ModelLayer("labels", geomOptions) );
}
if ( !useStencil )
viewer.getCamera()->addCullCallback( new osgEarth::Util::AutoClipPlaneCullCallback(mapNode) );
// add some stock OSG handlers:
viewer.addEventHandler(new osgViewer::StatsHandler());
viewer.addEventHandler(new osgViewer::WindowSizeHandler());
viewer.addEventHandler(new osgGA::StateSetManipulator(viewer.getCamera()->getOrCreateStateSet()));
return viewer.run();
}
//
// NOTE: run this sample from the repo/tests directory.
//
int main(int argc, char** argv)
{
osg::ArgumentParser arguments(&argc,argv);
bool useRaster = arguments.read("--rasterize");
bool useOverlay = arguments.read("--overlay");
bool useStencil = arguments.read("--stencil");
bool useMem = arguments.read("--mem");
bool useLabels = arguments.read("--labels");
osgViewer::Viewer viewer(arguments);
// Start by creating the map:
Map* map = new Map();
// Start with a basemap imagery layer; we'll be using the GDAL driver
// to load a local GeoTIFF file:
GDALOptions basemapOpt;
basemapOpt.url() = "../data/world.tif";
map->addImageLayer( new ImageLayer( ImageLayerOptions("basemap", basemapOpt) ) );
// Next we add a feature layer. First configure a feature driver to
// load the vectors from a shapefile:
OGRFeatureOptions featureOpt;
if ( !useMem )
{
featureOpt.url() = "../data/usa.shp";
}
else
{
Ring* line = new Ring();
line->push_back( osg::Vec3d(-60, 20, 0) );
line->push_back( osg::Vec3d(-120, 20, 0) );
line->push_back( osg::Vec3d(-120, 60, 0) );
line->push_back( osg::Vec3d(-60, 60, 0) );
featureOpt.geometry() = line;
}
// Define a style for the feature data. Since we are going to render the
// vectors as lines, configure the line symbolizer:
Style style;
LineSymbol* ls = style.getOrCreateSymbol<LineSymbol>();
ls->stroke()->color() = osg::Vec4f( 1,1,0,1 ); // yellow
ls->stroke()->width() = 2.0f;
// Add some text labels.
if ( useLabels )
{
TextSymbol* text = style.getOrCreateSymbol<TextSymbol>();
text->provider() = "overlay";
text->content() = StringExpression( "[name]" );
text->priority() = NumericExpression( "[area]" );
text->removeDuplicateLabels() = true;
text->size() = 16.0f;
text->fill()->color() = Color::White;
text->halo()->color() = Color::DarkGray;
}
// That's it, the map is ready; now create a MapNode to render the Map:
MapNodeOptions mapNodeOptions;
mapNodeOptions.enableLighting() = false;
MapNode* mapNode = new MapNode( map, mapNodeOptions );
// Now we'll choose the AGG-Lite driver to render the features. By the way, the
// feature data is actually polygons, so we override that to treat it as lines.
// We apply the feature driver and set the style as well.
if (useStencil)
{
FeatureStencilModelOptions worldOpt;
worldOpt.featureOptions() = featureOpt;
worldOpt.geometryTypeOverride() = Geometry::TYPE_LINESTRING;
worldOpt.styles() = new StyleSheet();
worldOpt.styles()->addStyle( style );
worldOpt.enableLighting() = false;
worldOpt.depthTestEnabled() = false;
map->addModelLayer( new ModelLayer( "my features", worldOpt ) );
}
else if (useRaster)
{
AGGLiteOptions worldOpt;
worldOpt.featureOptions() = featureOpt;
worldOpt.geometryTypeOverride() = Geometry::TYPE_LINESTRING;
worldOpt.styles() = new StyleSheet();
worldOpt.styles()->addStyle( style );
map->addImageLayer( new ImageLayer( ImageLayerOptions("world", worldOpt) ) );
}
else //if (useGeom || useOverlay)
{
FeatureGeomModelOptions worldOpt;
worldOpt.featureOptions() = featureOpt;
worldOpt.geometryTypeOverride() = Geometry::TYPE_LINESTRING;
worldOpt.styles() = new StyleSheet();
worldOpt.styles()->addStyle( style );
worldOpt.enableLighting() = false;
worldOpt.depthTestEnabled() = false;
ModelLayerOptions options( "my features", worldOpt );
options.overlay() = useOverlay;
map->addModelLayer( new ModelLayer(options) );
}
viewer.setSceneData( mapNode );
viewer.setCameraManipulator( new EarthManipulator() );
if ( !useStencil && !useOverlay )
viewer.addEventHandler( new osgEarth::Util::AutoClipPlaneHandler );
// add some stock OSG handlers:
viewer.addEventHandler(new osgViewer::StatsHandler());
viewer.addEventHandler(new osgViewer::WindowSizeHandler());
viewer.addEventHandler(new osgGA::StateSetManipulator(viewer.getCamera()->getOrCreateStateSet()));
return viewer.run();
}
