OE所有官方例子
OE代码样例
/* -*-c++-*- */ /* osgEarth - Dynamic map generation toolkit for OpenSceneGraph * Copyright 2016 Pelican Mapping * http://osgearth.org * * osgEarth is free software; you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. * * You should have received a copy of the GNU Lesser General Public License * along with this program. If not, see <http://www.gnu.org/licenses/> */#include <osgEarth/MapNode>#include <osgEarthUtil/EarthManipulator> #include <osgEarthUtil/ExampleResources>#include <osgEarthAnnotation/ImageOverlay> #include <osgEarthAnnotation/CircleNode> #include <osgEarthAnnotation/RectangleNode> #include <osgEarthAnnotation/EllipseNode> #include <osgEarthAnnotation/PlaceNode> #include <osgEarthAnnotation/LabelNode> #include <osgEarthAnnotation/LocalGeometryNode> #include <osgEarthAnnotation/FeatureNode> #include <osgEarthAnnotation/ModelNode>#include <osgEarthAnnotation/AnnotationEditing> #include <osgEarthAnnotation/ImageOverlayEditor>#include <osgEarthSymbology/GeometryFactory>#include <osgViewer/Viewer>using namespace osgEarth; using namespace osgEarth::Annotation; using namespace osgEarth::Features; using namespace osgEarth::Util;//------------------------------------------------------------------int usage(char** argv) {OE_WARN << "Usage: " << argv[0] << " <earthfile>" << std::endl;return -1; }//------------------------------------------------------------------int main(int argc, char** argv) {osg::Group* root = new osg::Group();// try to load an earth file.osg::ArgumentParser arguments(&argc, argv);osgViewer::Viewer viewer(arguments);viewer.setCameraManipulator(new EarthManipulator());// load an earth file and parse demo argumentsosg::Node* node = MapNodeHelper().load(arguments, &viewer);if (!node)return usage(argv);root->addChild(node);// find the map node that we loaded.MapNode* mapNode = MapNode::findMapNode(node);if (!mapNode)return usage(argv);// Group to hold all our annotation elements.osg::Group* annoGroup = new osg::Group();root->addChild(annoGroup);// Make a group for labelsosg::Group* labelGroup = new osg::Group();annoGroup->addChild(labelGroup);osg::Group* editGroup = new osg::Group();root->addChild(editGroup);// Style our labels: Style labelStyle;labelStyle.getOrCreate<TextSymbol>()->alignment() = TextSymbol::ALIGN_CENTER_CENTER;labelStyle.getOrCreate<TextSymbol>()->fill()->color() = Color::Yellow;// A lat/long SRS for specifying points.const SpatialReference* geoSRS = mapNode->getMapSRS()->getGeographicSRS();//--------------------------------------------------------------------// A series of place nodes (an icon with a text label) {Style pm;pm.getOrCreate<IconSymbol>()->url()->setLiteral("E:/temp/OE/placemark32.png");pm.getOrCreate<IconSymbol>()->declutter() = true;pm.getOrCreate<TextSymbol>()->halo() = Color("#5f5f5f");// bunch of pins:labelGroup->addChild(new PlaceNode(mapNode, GeoPoint(geoSRS, -74.00, 40.71), "New York", pm));labelGroup->addChild(new PlaceNode(mapNode, GeoPoint(geoSRS, -77.04, 38.85), "Washington, DC", pm));labelGroup->addChild(new PlaceNode(mapNode, GeoPoint(geoSRS, -118.40, 33.93), "Los Angeles", pm));labelGroup->addChild(new PlaceNode(mapNode, GeoPoint(geoSRS, -71.03, 42.37), "Boston", pm));labelGroup->addChild(new PlaceNode(mapNode, GeoPoint(geoSRS, -157.93, 21.35), "Honolulu", pm));labelGroup->addChild(new PlaceNode(mapNode, GeoPoint(geoSRS, 139.75, 35.68), "Tokyo", pm));labelGroup->addChild(new PlaceNode(mapNode, GeoPoint(geoSRS, -90.25, 29.98), "New Orleans", pm));labelGroup->addChild(new PlaceNode(mapNode, GeoPoint(geoSRS, -80.28, 25.82), "Miami", pm));labelGroup->addChild(new PlaceNode(mapNode, GeoPoint(geoSRS, -117.17, 32.72), "San Diego", pm));// test with an LOD:osg::LOD* lod = new osg::LOD();lod->addChild(new PlaceNode(mapNode, GeoPoint(geoSRS, 14.68, 50.0), "Prague", pm), 0.0, 2e6);labelGroup->addChild(lod);// absolute altitude:labelGroup->addChild(new PlaceNode(mapNode, GeoPoint(geoSRS, -87.65, 41.90, 1000, ALTMODE_ABSOLUTE), "Chicago", pm));}//--------------------------------------------------------------------// a box that follows lines of latitude (rhumb line interpolation, the default) {Geometry* geom = new Polygon();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));Feature* feature = new Feature(geom, geoSRS);feature->geoInterp() = GEOINTERP_RHUMB_LINE;Style geomStyle;geomStyle.getOrCreate<LineSymbol>()->stroke()->color() = Color::Cyan;geomStyle.getOrCreate<LineSymbol>()->stroke()->width() = 5.0f;geomStyle.getOrCreate<LineSymbol>()->tessellationSize() = 75000;geomStyle.getOrCreate<AltitudeSymbol>()->clamping() = AltitudeSymbol::CLAMP_TO_TERRAIN;geomStyle.getOrCreate<AltitudeSymbol>()->technique() = AltitudeSymbol::TECHNIQUE_GPU;FeatureNode* fnode = new FeatureNode(mapNode, feature, geomStyle);annoGroup->addChild(fnode);labelGroup->addChild(new LabelNode(mapNode, GeoPoint(geoSRS, -30, 50), "Rhumb line polygon", labelStyle));}//--------------------------------------------------------------------// another rhumb box that crosses the antimeridian {Geometry* geom = new Polygon();geom->push_back(-160., -30.);geom->push_back(150., -20.);geom->push_back(160., -45.);geom->push_back(-150., -40.);Style geomStyle;Feature* feature = new Feature(geom, geoSRS);feature->geoInterp() = GEOINTERP_RHUMB_LINE;geomStyle.getOrCreate<LineSymbol>()->stroke()->color() = Color::Lime;geomStyle.getOrCreate<LineSymbol>()->stroke()->width() = 3.0f;geomStyle.getOrCreate<LineSymbol>()->tessellationSize() = 75000;geomStyle.getOrCreate<AltitudeSymbol>()->clamping() = AltitudeSymbol::CLAMP_TO_TERRAIN;geomStyle.getOrCreate<AltitudeSymbol>()->technique() = AltitudeSymbol::TECHNIQUE_GPU;FeatureNode* gnode = new FeatureNode(mapNode, feature, geomStyle);annoGroup->addChild(gnode);labelGroup->addChild(new LabelNode(mapNode, GeoPoint(geoSRS, -175, -35), "Antimeridian polygon", labelStyle));}//--------------------------------------------------------------------// A path using great-circle interpolation.// Keep a pointer to it so we can modify it later on.FeatureNode* pathNode = 0;{Geometry* path = new LineString();path->push_back(osg::Vec3d(-74, 40.714, 0)); // New Yorkpath->push_back(osg::Vec3d(139.75, 35.68, 0)); // Tokyo Feature* pathFeature = new Feature(path, geoSRS);pathFeature->geoInterp() = GEOINTERP_GREAT_CIRCLE;Style pathStyle;pathStyle.getOrCreate<LineSymbol>()->stroke()->color() = Color::White;pathStyle.getOrCreate<LineSymbol>()->stroke()->width() = 1.0f;pathStyle.getOrCreate<LineSymbol>()->tessellationSize() = 75000;pathStyle.getOrCreate<PointSymbol>()->size() = 5;pathStyle.getOrCreate<PointSymbol>()->fill()->color() = Color::Red;pathStyle.getOrCreate<AltitudeSymbol>()->clamping() = AltitudeSymbol::CLAMP_TO_TERRAIN;pathStyle.getOrCreate<AltitudeSymbol>()->technique() = AltitudeSymbol::TECHNIQUE_GPU;//OE_INFO << "Path extent = " << pathFeature->getExtent().toString() << std::endl; pathNode = new FeatureNode(mapNode, pathFeature, pathStyle);annoGroup->addChild(pathNode);labelGroup->addChild(new LabelNode(mapNode, GeoPoint(geoSRS, -170, 61.2), "Great circle path", labelStyle));}//--------------------------------------------------------------------// Two circle segments around New Orleans. {Style circleStyle;circleStyle.getOrCreate<PolygonSymbol>()->fill()->color() = Color(Color::Cyan, 0.5);circleStyle.getOrCreate<AltitudeSymbol>()->clamping() = AltitudeSymbol::CLAMP_TO_TERRAIN;circleStyle.getOrCreate<AltitudeSymbol>()->technique() = AltitudeSymbol::TECHNIQUE_DRAPE;CircleNode* circle = new CircleNode(mapNode,GeoPoint(geoSRS, -90.25, 29.98, 1000., ALTMODE_RELATIVE),Distance(300, Units::KILOMETERS),circleStyle, Angle(-45.0, Units::DEGREES), Angle(45.0, Units::DEGREES), true);annoGroup->addChild(circle);editGroup->addChild(new CircleNodeEditor(circle));}{Style circleStyle;circleStyle.getOrCreate<PolygonSymbol>()->fill()->color() = Color(Color::Red, 0.5);circleStyle.getOrCreate<AltitudeSymbol>()->clamping() = AltitudeSymbol::CLAMP_TO_TERRAIN;circleStyle.getOrCreate<AltitudeSymbol>()->technique() = AltitudeSymbol::TECHNIQUE_DRAPE;CircleNode* circle = new CircleNode(mapNode,GeoPoint(geoSRS, -90.25, 29.98, 1000., ALTMODE_RELATIVE),Distance(300, Units::KILOMETERS),circleStyle, Angle(45.0, Units::DEGREES), Angle(360.0 - 45.0, Units::DEGREES), true);annoGroup->addChild(circle);editGroup->addChild(new CircleNodeEditor(circle));}//--------------------------------------------------------------------// An extruded ellipse around Miami. {Style ellipseStyle;ellipseStyle.getOrCreate<PolygonSymbol>()->fill()->color() = Color(Color::Orange, 0.75);ellipseStyle.getOrCreate<ExtrusionSymbol>()->height() = 250000.0; // meters MSLEllipseNode* ellipse = new EllipseNode(mapNode,GeoPoint(geoSRS, -80.28, 25.82, 0.0, ALTMODE_RELATIVE),Distance(250, Units::MILES),Distance(100, Units::MILES),Angle(0, Units::DEGREES),ellipseStyle,Angle(45.0, Units::DEGREES),Angle(360.0 - 45.0, Units::DEGREES),true);annoGroup->addChild(ellipse);editGroup->addChild(new EllipseNodeEditor(ellipse));}{Style ellipseStyle;ellipseStyle.getOrCreate<PolygonSymbol>()->fill()->color() = Color(Color::Blue, 0.75);ellipseStyle.getOrCreate<ExtrusionSymbol>()->height() = 250000.0; // meters MSLEllipseNode* ellipse = new EllipseNode(mapNode,GeoPoint(geoSRS, -80.28, 25.82, 0.0, ALTMODE_RELATIVE),Distance(250, Units::MILES),Distance(100, Units::MILES),Angle(0, Units::DEGREES),ellipseStyle,Angle(-40.0, Units::DEGREES),Angle(40.0, Units::DEGREES),true);annoGroup->addChild(ellipse);editGroup->addChild(new EllipseNodeEditor(ellipse));}//-------------------------------------------------------------------- {// A rectangle around San Diego Style rectStyle;rectStyle.getOrCreate<PolygonSymbol>()->fill()->color() = Color(Color::Green, 0.5);rectStyle.getOrCreate<AltitudeSymbol>()->clamping() = AltitudeSymbol::CLAMP_TO_TERRAIN;rectStyle.getOrCreate<AltitudeSymbol>()->technique() = AltitudeSymbol::TECHNIQUE_DRAPE;RectangleNode* rect = new RectangleNode(mapNode,GeoPoint(geoSRS, -117.172, 32.721),Distance(300, Units::KILOMETERS),Distance(600, Units::KILOMETERS),rectStyle);annoGroup->addChild(rect);editGroup->addChild(new RectangleNodeEditor(rect));}//--------------------------------------------------------------------// An extruded polygon roughly the shape of Utah. Here we demonstrate the// FeatureNode, where you create a geographic geometry and use it as an// annotation. {Geometry* utah = new Polygon();utah->push_back(-114.052, 37.0);utah->push_back(-109.054, 37.0);utah->push_back(-109.054, 41.0);utah->push_back(-111.040, 41.0);utah->push_back(-111.080, 42.059);utah->push_back(-114.080, 42.024);Style utahStyle;utahStyle.getOrCreate<ExtrusionSymbol>()->height() = 250000.0; // meters MSLutahStyle.getOrCreate<PolygonSymbol>()->fill()->color() = Color(Color::White, 0.8);Feature* utahFeature = new Feature(utah, geoSRS);FeatureNode* featureNode = new FeatureNode(mapNode, utahFeature, utahStyle);annoGroup->addChild(featureNode);}//--------------------------------------------------------------------// an image overlay. {ImageOverlay* imageOverlay = 0L;osg::Image* image = osgDB::readImageFile("E:/temp/OE/placemark32.png/USFLAG.TGA");//osg::Image* image = osgDB::readImageFile("../data/USFLAG.TGA");if (image){imageOverlay = new ImageOverlay(mapNode, image);imageOverlay->setBounds(Bounds(-100.0, 35.0, -90.0, 40.0));annoGroup->addChild(imageOverlay);editGroup->addChild(new ImageOverlayEditor(imageOverlay));}}//--------------------------------------------------------------------// a model node with auto scaling. {Style style;style.getOrCreate<ModelSymbol>()->autoScale() = true;style.getOrCreate<ModelSymbol>()->url()->setLiteral("E:/temp/OE/red_flag.osg.50.scale");ModelNode* modelNode = new ModelNode(mapNode, style);modelNode->setPosition(GeoPoint(geoSRS, -100, 52));annoGroup->addChild(modelNode);}//--------------------------------------------------------------------// initialize the viewer: viewer.setSceneData(root);viewer.getCamera()->setSmallFeatureCullingPixelSize(-1.0f);osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;traits->x = 200;traits->y = 200;traits->width = 800;traits->height = 680;traits->windowDecoration = true;traits->doubleBuffer = true;traits->sharedContext = 0;osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits.get());osg::ref_ptr<osg::Camera> camera = new osg::Camera;camera->setGraphicsContext(gc.get());camera->setViewport(new osg::Viewport(0, 0, traits->width, traits->height));GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;camera->setDrawBuffer(buffer);camera->setReadBuffer(buffer);viewer.addSlave(camera);return viewer.run(); }
earth文件样例为 ： annotation.earth
<!-- osgEarth Sample - Annotations --> <map name="readymap.org" type="geocentric" version="2"><image name="ReadyMap.org - Imagery" driver="tms"><url>http://readymap.org/readymap/tiles/1.0.0/7/</url></image><elevation name="ReadyMap.org - Elevation" driver="tms"><url>http://readymap.org/readymap/tiles/1.0.0/116/</url></elevation><viewpoints><viewpoint name="Annotation Samples"lat="33" long="-118" range="500000"heading="35.27" pitch="-35" /></viewpoints><!--annotations name="Annotations Group A"><label text="Label"><position lat="34" long="-120" /><style type="text/css">text-align: center_center;text-size: 20;text-declutter: true;text-halo: #777;text-bbox-fill: #00FF0033;text-bbox-margin: 3;text-bbox-border: #FFFFFFFF;text-bbox-border-width: 1;</style></label><label text="Label with offsets"><position lat="16" long="-120" /><style type="text/css">text-align: center_center;text-size: 20;text-declutter: true;text-halo: #777;text-offset-x: 28;text-offset-y: -100;text-bbox-fill: #00FF0033;text-bbox-margin: 3;text-bbox-border: #FFFFFFFF;text-bbox-border-width: 1;</style></label><place text="Place"><position lat="35" long="-110"/><icon>../data/placemark32.png</icon><style type="text/css">text-declutter: true;text-halo: #777;</style></place><place text="Extruded Place"><position lat="35" long="-105" alt="5000"/><icon>../data/placemark32.png</icon><style type="text/css">text-declutter: true;text-halo: #777;</style></place><circle name="draped circle"><position lat="34.051" long="-117.974"/><radius>50km</radius><style type="text/css">fill: #ffff0080;stroke: #ffffff;stroke-width: 2px;altitude-clamping: terrain-drape;</style></circle><label text="Draped circle" lat="34.051" long="-117.974"/><circle name="scene-clamped circle"><position lat="22.074" long="-159.606"/><radius>1.2km</radius><style type="text/css">stroke: #ffffff;stroke-width: 2px;altitude-clamping: terrain-scene;altitude-binding: vertex;render-depth-offset-auto: true;</style></circle><label text="scene-clamped circle" lat="22.074" long="-159.606"/><ellipse name="ellipse relative"><position lat="40" long="-100" hat="5000"/><radius_major>50km</radius_major><radius_minor>40km</radius_minor><style type="text/css">fill: #ff00ff7f;stroke: #ffffff;</style></ellipse><label text="HAT Ellipse" lat="40" long="-100.0"/></annotations><annotations name="Annotations Group B"><ellipse name="ellipse extruded"><position lat="32" long="-100.0"/><radius_major>50km</radius_major><radius_minor>20km</radius_minor><style type="text/css">fill: #ff7f007f;stroke: #ff0000ff;extrusion-height: 5000;</style></ellipse><label text="Extruded Ellipse" lat="32" long="-100.0"/><feature name="Extruded Line"><srs>wgs84</srs><geometry>LINESTRING(-80.37 34.039, -80.09 33.96, -79.75 34, -79.43 33.37, -79.48 32.88)</geometry><style type="text/css">fill: #ff00ff7f;stroke: #ffff00;stroke-width: 3;stroke-crease-angle: 45.0;extrusion-height: 30000;render-lighting: true;</style></feature><label text="Extruded Line" lat="32" long="-80"/><feature name="GPU-Clamped Line"><srs>wgs84</srs><geometry>LINESTRING(-110 47, -110 43, -120 43, -120 42)</geometry><style type="text/css">stroke: #ff3000;stroke-width: 3;stroke-tessellation-size: 1km;altitude-clamping: terrain-gpu;</style></feature><label text="GPU-Clamped Line" lat="44" long="-115"><style type="text/css">text-align: center_center;text-geographic-course: 45.0;text-bbox-fill: #FFFF0033;text-bbox-margin: 8;text-bbox-border: #FFFF00;text-bbox-border-width: 0.5;</style></label><feature name="Draped Polygon"><srs>wgs84</srs><geometry>POLYGON((-100 47, -100 49, -95 48, -96 45, -98 42))</geometry><style type="text/css">fill: #ffff007f;stroke: #ffffff;stroke-width: 2px;altitude-clamping: terrain-drape;</style></feature><label text="Draped Polygon" lat="45" long="-98"/><model name="Auto-Scaled Model"><position lat="43" long="-100"/><style>model: "../data/red_flag.osg.45.scale";model-scale: auto;</style></model><label text="Auto-Scaled Model" lat="42.5" long="-100"/><imageoverlay><url>../data/fractal.png</url><alpha>1.0</alpha><geometry>POLYGON((-81 26, -80.5 26, -80.5 26.5, -81 26.5))</geometry></imageoverlay><label text="ImageOverlay" lat="26" long="-81"/><local_geometry name="3D geometry"><geometry>POLYGON((0 0 0, -25000 0 45000, 0 0 75000, 25000 0 45000))</geometry><position lat="33.4" long="-116.6"/><style type="text/css">fill: #00ff00;stroke: #ffff00;stroke-width: 2px;render-lighting: false;</style><horizon_culling>true</horizon_culling></local_geometry><label text="3D Geometry" lat="33.4" long="-116.6"/><feature name="Long Line"><srs>wgs84</srs><geometry>LINESTRING(10 0, 10 65)</geometry><style type="text/css">stroke: #ffff00;stroke-width: 3;stroke-tessellation-size: 1km;altitude-clamping: terrain;altitude-technique: gpu;render-lighting: false;</style></feature><label text="Tessellated line" lat="35" long="10"><style type="text/css">text-align: center_bottom;text-geographic-course: 0;</style></label></annotations--> </map>
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