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 arguments osg::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 labels osg::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 York path->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 MSL EllipseNode* 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 MSL EllipseNode* 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 MSL utahStyle.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>