def main(argv):
# use an ArgumentParser object to manage the program arguments.
arguments = osg.ArgumentParser(argv)
arguments.getApplicationUsage().addKeyboardMouseBinding("m", "Increase the number of depth peeling layers")
arguments.getApplicationUsage().addKeyboardMouseBinding("n", "Decrease the number of depth peeling layers")
arguments.getApplicationUsage().addKeyboardMouseBinding("l", "Toggle display of the individual or composed layer textures")
arguments.getApplicationUsage().addKeyboardMouseBinding("p", "Increase the layer offset")
arguments.getApplicationUsage().addKeyboardMouseBinding("o", "Decrease the layer offset")
# Have the usual viewer
viewer = osgViewer.Viewer(arguments)
displaySettings = osg.DisplaySettings()
viewer.setDisplaySettings(displaySettings)
# Add the stats handler
viewer.addEventHandler(osgViewer.StatsHandler)()
# add the help handler
viewer.addEventHandler(osgViewer.HelpHandler(arguments.getApplicationUsage()))
# any option left unread are converted into errors to write out later.
arguments.reportRemainingOptionsAsUnrecognized()
# read the dump truck, we will need it twice
dt = osgDB.readNodeFile("dumptruck.osg")
# display a solid version of the dump truck
solidModel = osg.PositionAttitudeTransform()
solidModel.setPosition(osg.Vec3f(7.0, -2.0, 7.0))
solidModel.addChild(dt)
# generate the 3D heatmap surface to display
hm = Heatmap(30, 30, 10, 30, 30, 1.0, 0.25)
float data[30][30]
for (int x=0 x < 30 ++x)
for (int y=0 y < 30 ++y)
data[y][x] = (double)rand() / RAND_MAX
def main(argv):
# use an ArgumentParser object to manage the program arguments.
viewer = osgViewer.Viewer()
# viewer.setThreadingModel(osgViewer.Viewer.SingleThreaded)
# read the scene from the list of file specified commandline args.
loadedModel = osgDB.readNodeFile("cessna.osg")
if loadedModel == None:
raise Exception('Could not load model file (is OSG_FILE_PATH set and correct?)')
# create a transform to spin the model.
loadedModelTransform = osg.MatrixTransform()
loadedModelTransform.addChild(loadedModel)
print loadedModelTransform.getBound()._center
#todo: nc = osg.AnimationPathCallback(loadedModelTransform.getBound()._center,osg.Vec3(0.0,0.0,1.0),osg.inDegrees(45.0));
# loadedModelTransform.setUpdateCallback(nc)
rootNode = osg.Group()
rootNode.stateSet.dataVariance = osg.Object.DYNAMIC
rootNode.addChild(createMirroredScene(loadedModelTransform))
viewer.addEventHandler(osgViewer.HelpHandler())
viewer.addEventHandler(osgViewer.StatsHandler())
viewer.addEventHandler(osgGA.StateSetManipulator(rootNode.stateSet))
viewer.setSceneData(rootNode)
print "set scene data"
#hint to tell viewer to request stencil buffer when setting up windows
# osg.DisplaySettings().setMinimumNumStencilBits(8)
osg.DisplaySettings.instance().setMinimumNumStencilBits(8);
osgDB.writeNodeFile(rootNode, "test_reflect.osg");
viewer.run() #we need run, because that sets up a trackballmanipulator and so we have the correct "look" into the scene.
return 0
# Create a 1x1 quad in XZ plane
g = osg.createTexturedQuadGeometry(osg.Vec3f(0, 0, 0), osg.Vec3f(1, 0, 0),
osg.Vec3f(0, 0, 1), 0, 0, 1, 1)
g.getColorArray()[0] = osg.Vec4f(1, 1, 1,
0.5) # change color to semitransparent
# Add it to a geode
geode = osg.Geode()
geode.addDrawable(g)
# Add texture
i = osgDB.readImageFile("Images/osg256.png")
t = osg.Texture2D(i)
s = geode.stateSet
s.setTextureAttributeAndModes(0, t, osg.StateAttribute.Values.ON)
# Make sure blending is active and the geode is in the transparent (depth sorted) bin
s.setRenderingHint(osg.StateSet.TRANSPARENT_BIN)
s.setMode(osg.GL_BLEND, osg.StateAttribute.ON)
# Create viewer, add some standard handlers to it and run it
viewer = osgViewer.Viewer()
viewer.setUpViewInWindow(50, 50, 1024, 768)
viewer.addEventHandler(osgGA.StateSetManipulator(geode.stateSet))
viewer.addEventHandler(osgViewer.HelpHandler())
viewer.addEventHandler(osgViewer.StatsHandler())
viewer.setSceneData(geode)
viewer.run()
del viewer # To cause the dtor to be called, hence the window to be destroyed.
def main(argv):
# use an ArgumentParser object to manage the program arguments.
arguments = osg.ArgumentParser(argv)
arguments.getApplicationUsage().setApplicationName(arguments.getApplicationName())
arguments.getApplicationUsage().setDescription(arguments.getApplicationName()+" demonstrates OpenGL occlusion query in OSG using the OcclusionQueryNode.")
arguments.getApplicationUsage().setCommandLineUsage(arguments.getApplicationName()+" [options] [filename(s)]")
arguments.getApplicationUsage().addCommandLineOption("-h or --help","Display command line parameters")
# if user request help write it out to cout.
if arguments.read("-h") or arguments.read("--help") :
arguments.getApplicationUsage().write(std.cout, osg.ApplicationUsage.COMMAND_LINE_OPTION)
return 1
# report any errors if they have occurred when parsing the program arguments.
if arguments.errors() :
arguments.writeErrorMessages(std.cout)
return 1
viewer = osgViewer.Viewer( arguments )
# add the state manipulator
viewer.addEventHandler( osgGA.StateSetManipulator(viewer.getCamera().getOrCreateStateSet()) )
# add the stats handler
viewer.addEventHandler(osgViewer.StatsHandler)()
# add the help handler
viewer.addEventHandler(osgViewer.HelpHandler(arguments.getApplicationUsage()))
optimize = arguments.read( "--opt" )
# load the specified model
root = 0
if arguments.argc()>1 :
root = osgDB.readNodeFiles( arguments )
if root.valid() :
# Run a NodeVisitor to insert OcclusionQueryNodes in the scene graph.
oqv = OcclusionQueryVisitor()
root.accept( oqv )
else:
print arguments.getApplicationName(), ": unable to load specified data."
return 1
else:
root = createStockScene()
if not root :
print arguments.getApplicationName(), ": Failed to create stock scene."
return 1
# any option left unread are converted into errors to write out later.
arguments.reportRemainingOptionsAsUnrecognized()
# report any errors if they have occurred when parsing the program arguments.
if arguments.errors() :
arguments.writeErrorMessages(std.cout)
return 1
# optimize the scene graph, remove redundant nodes and state etc.
if optimize :
optimizer = osgUtil.Optimizer()
optimizer.optimize( root )
viewer.setSceneData( root )
kh = KeyHandler( *root )
viewer.addEventHandler( kh )
return viewer.run()
def main(argv):
# use an ArgumentParser object to manage the program arguments.
arguments = osg.ArgumentParser(argv)
arguments.getApplicationUsage().addCommandLineOption("-v","Set the terrain vertical scale.")
arguments.getApplicationUsage().addCommandLineOption("-r","Set the terrain sample ratio.")
arguments.getApplicationUsage().addCommandLineOption("--login <url> <username> <password>","Provide authentication information for http file access.")
# construct the viewer.
viewer = osgViewer.Viewer(arguments)
# set the tile loaded callback to load the optional imagery
whiteList = osgTerrain.WhiteListTileLoadedCallback()
setname = str()
while arguments.read("--allow",setname) :
whiteList.allow(setname)
while arguments.read("--allow-all") :
whiteList.setAllowAll(True)
osgTerrain.TerrainTile.setTileLoadedCallback(whiteList)
# obtain the vertical scale
verticalScale = 1.0
while arguments.read("-v",verticalScale) :
# obtain the sample ratio
sampleRatio = 1.0
while arguments.read("-r",sampleRatio) :
# set up any authentication.
str url, username, password
while arguments.read("--login",url, username, password) :
if not osgDB.Registry.instance().getAuthenticationMap() :
osgDB.Registry.instance().setAuthenticationMap(osgDB.AuthenticationMap)()
osgDB.Registry.instance().getAuthenticationMap().addAuthenticationDetails(
url,
osgDB.AuthenticationDetails(username, password)
)
# add all the event handlers to the viewer
# add the state manipulator
viewer.addEventHandler( osgGA.StateSetManipulator(viewer.getCamera().getOrCreateStateSet()) )
# add the thread model handler
viewer.addEventHandler(osgViewer.ThreadingHandler)()
# add the window size toggle handler
viewer.addEventHandler(osgViewer.WindowSizeHandler)()
# add the stats handler
viewer.addEventHandler(osgViewer.StatsHandler)()
# add the help handler
viewer.addEventHandler(osgViewer.HelpHandler(arguments.getApplicationUsage()))
# add the record camera path handler
viewer.addEventHandler(osgViewer.RecordCameraPathHandler)()
# add the LOD Scale handler
viewer.addEventHandler(osgViewer.LODScaleHandler)()
# add all the camera manipulators
keyswitchManipulator = osgGA.KeySwitchMatrixManipulator()
keyswitchManipulator.addMatrixManipulator( ord("1"), "Trackball", osgGA.TrackballManipulator() )
keyswitchManipulator.addMatrixManipulator( ord("2"), "Flight", osgGA.FlightManipulator() )
keyswitchManipulator.addMatrixManipulator( ord("3"), "Drive", osgGA.DriveManipulator() )
num = keyswitchManipulator.getNumMatrixManipulators()
keyswitchManipulator.addMatrixManipulator( ord("4"), "Terrain", osgGA.TerrainManipulator() )
pathfile = str()
keyForAnimationPath = ord("5")
while arguments.read("-p",pathfile) :
apm = osgGA.AnimationPathManipulator(pathfile)
if apm or not apm.valid() :
num = keyswitchManipulator.getNumMatrixManipulators()
keyswitchManipulator.addMatrixManipulator( keyForAnimationPath, "Path", apm )
++keyForAnimationPath
keyswitchManipulator.selectMatrixManipulator(num)
viewer.setCameraManipulator( keyswitchManipulator )
# set up the scene graph
# load the nodes from the commandline arguments.
rootnode = osgDB.readNodeFiles(arguments)
if not rootnode :
osg.notify(osg.NOTICE), "Warning: no valid data loaded, please specify a database on the command line."
return 1
terrain = findTopMostNodeOfType<osgTerrain.Terrain>(rootnode)
if not terrain :
terrain = osgTerrain.Terrain()
csn = findTopMostNodeOfType<osg.CoordinateSystemNode>(rootnode)
if csn :
terrain.set(*csn)
terrain.addChild(rootnode)
rootnode = terrain
csn = terrain
terrain.setSampleRatio(sampleRatio)
terrain.setVerticalScale(verticalScale)
# register our custom handler for adjust Terrain settings
viewer.addEventHandler(TerrainHandler(terrain))
numLayers = 1
mtc = findTopMostNodeOfType<osgFX.MultiTextureControl>(rootnode)
if mtc :
numLayers = mtc.getNumTextureWeights()
# switch on just the first texture layer.
mtc.setTextureWeight(0,1.0)
for(unsigned int i=1 i<numLayers ++i)
mtc.setTextureWeight(i,0.0)
if numLayers<2 :
osg.notify(osg.NOTICE), "Warning: scene must have MultiTextureControl node with at least 2 texture units defined."
return 1
maxElevationTransition = 1e6
elevations = ElevationLayerBlendingCallback.Elevations()
for(unsigned int i=0 i<numLayers ++i)
elevations.push_back(maxElevationTransition)
maxElevationTransition /= 2.0
# we must assign callback as both an update and cull callback, as update callback to do the update of
# the the osgFX.MultiTextureControl node a thread safe way, and as a cull callback to gather the camera
# position information.
elbc = ElevationLayerBlendingCallback(mtc, elevations)
terrain.setUpdateCallback(elbc)
terrain.setCullCallback(elbc)
# add a viewport to the viewer and attach the scene graph.
viewer.setSceneData( rootnode )
# create the windows and run the threads.
viewer.realize()
return viewer.run()
def main(argv):
# use an ArgumentParser object to manage the program arguments.
arguments = osg.ArgumentParser(argv)
# set up the usage document, in case we need to print out how to use this program.
arguments.getApplicationUsage().setDescription(arguments.getApplicationName()+" is the example which demonstrates use of node tracker.")
arguments.getApplicationUsage().setCommandLineUsage(arguments.getApplicationName())
arguments.getApplicationUsage().addCommandLineOption("-h or --help","Display this information")
# construct the viewer.
viewer = osgViewer.Viewer(arguments)
# add the state manipulator
viewer.addEventHandler( osgGA.StateSetManipulator(viewer.getCamera().getOrCreateStateSet()) )
# add the thread model handler
viewer.addEventHandler(osgViewer.ThreadingHandler)()
# add the window size toggle handler
viewer.addEventHandler(osgViewer.WindowSizeHandler)()
# add the stats handler
viewer.addEventHandler(osgViewer.StatsHandler)()
# add the record camera path handler
viewer.addEventHandler(osgViewer.RecordCameraPathHandler)()
# add the help handler
viewer.addEventHandler(osgViewer.HelpHandler(arguments.getApplicationUsage()))
# set the near far ration computation up.
viewer.getCamera().setComputeNearFarMode(osg.CullSettings.COMPUTE_NEAR_FAR_USING_PRIMITIVES)
viewer.getCamera().setNearFarRatio(0.000003)
speed = 1.0
while arguments.read("-f") or arguments.read("--fixed") : speed = 0.0
rotation = osg.Quat()
vec4 = osg.Vec4()
while arguments.read("--rotate-model",vec4[0],vec4[1],vec4[2],vec4[3]) :
local_rotate = osg.Quat()
local_rotate.makeRotate(osg.DegreesToRadians(vec4[0]),vec4[1],vec4[2],vec4[3])
rotation = rotation * local_rotate
nc = 0
flightpath_filename = str()
while arguments.read("--flight-path",flightpath_filename) :
fin = osgDB.ifstream(flightpath_filename.c_str())
if fin :
path = osg.AnimationPath()
path.read(fin)
nc = osg.AnimationPathCallback(path)
trackerMode = osgGA.NodeTrackerManipulator.NODE_CENTER_AND_ROTATION
mode = str()
while arguments.read("--tracker-mode",mode) :
if mode=="NODE_CENTER_AND_ROTATION" : trackerMode = osgGA.NodeTrackerManipulator.NODE_CENTER_AND_ROTATION
elif mode=="NODE_CENTER_AND_AZIM" : trackerMode = osgGA.NodeTrackerManipulator.NODE_CENTER_AND_AZIM
elif mode=="NODE_CENTER" : trackerMode = osgGA.NodeTrackerManipulator.NODE_CENTER
else:
print "Unrecognized --tracker-mode option ", mode, ", valid options are:"
print " NODE_CENTER_AND_ROTATION"
print " NODE_CENTER_AND_AZIM"
print " NODE_CENTER"
return 1
rotationMode = osgGA.NodeTrackerManipulator.TRACKBALL
while arguments.read("--rotation-mode",mode) :
if mode=="TRACKBALL" : rotationMode = osgGA.NodeTrackerManipulator.TRACKBALL
elif mode=="ELEVATION_AZIM" : rotationMode = osgGA.NodeTrackerManipulator.ELEVATION_AZIM
else:
print "Unrecognized --rotation-mode option ", mode, ", valid options are:"
print " TRACKBALL"
print " ELEVATION_AZIM"
return 1
useOverlay = True
while arguments.read("--no-overlay") or arguments.read("-n") : useOverlay = False
technique = osgSim.OverlayNode.OBJECT_DEPENDENT_WITH_ORTHOGRAPHIC_OVERLAY
while arguments.read("--object") : technique = osgSim.OverlayNode.OBJECT_DEPENDENT_WITH_ORTHOGRAPHIC_OVERLAY
while arguments.read("--ortho") or arguments.read("--orthographic") : technique = osgSim.OverlayNode.VIEW_DEPENDENT_WITH_ORTHOGRAPHIC_OVERLAY
while arguments.read("--persp") or arguments.read("--perspective") : technique = osgSim.OverlayNode.VIEW_DEPENDENT_WITH_PERSPECTIVE_OVERLAY
overlayTextureUnit = 1
while arguments.read("--unit", overlayTextureUnit) :
pathfile = str()
while arguments.read("-p",pathfile) :
addFireEffect = arguments.read("--fire")
# if user request help write it out to cout.
if arguments.read("-h") or arguments.read("--help") :
arguments.getApplicationUsage().write(std.cout)
return 1
tm = osgGA.NodeTrackerManipulator()
overlayFilename = str()
while arguments.read("--overlay", overlayFilename) :
# read the scene from the list of file specified commandline args.
root = osgDB.readNodeFiles(arguments)
if not root : root = createEarth()
if not root : return 0
if not overlayFilename.empty() :
#osg.Object *pObj = osgDB.readObjectFile("alaska_clean.shp")
#osg.Geode shapefile = dynamic_cast<osg.Geode*> (pObj)
#
#ConvertLatLon2EllipsoidCoordinates latlon2em
#shapefile.accept(latlon2em)
shapefile = osgDB.readNodeFile(overlayFilename)
if not shapefile :
osg.notify(osg.NOTICE), "File `", overlayFilename, "` not found"
return 1
csn = dynamic_cast<osg.CoordinateSystemNode*>(root)
if csn :
overlayNode = osgSim.OverlayNode(technique)
overlayNode.getOrCreateStateSet().setTextureAttribute(1, osg.TexEnv(osg.TexEnv.DECAL))
overlayNode.setOverlaySubgraph(shapefile)
overlayNode.setOverlayTextureSizeHint(1024)
overlayNode.setOverlayTextureUnit(overlayTextureUnit)
# insert the OverlayNode between the coordinate system node and its children.
for(unsigned int i=0 i<csn.getNumChildren() ++i)
overlayNode.addChild( csn.getChild(i) )
csn.removeChildren(0, csn.getNumChildren())
csn.addChild(overlayNode)
viewer.setSceneData(csn)
else:
overlayNode = osgSim.OverlayNode(technique)
overlayNode.getOrCreateStateSet().setTextureAttribute(1, osg.TexEnv(osg.TexEnv.DECAL))
overlayNode.setOverlaySubgraph(shapefile)
overlayNode.setOverlayTextureSizeHint(1024)
overlayNode.addChild(root)
viewer.setSceneData(overlayNode)
else:
# add a viewport to the viewer and attach the scene graph.
viewer.setSceneData(root)
csn = dynamic_cast<osg.CoordinateSystemNode*>(root)
if csn :
overlayNode = osgSim.OverlayNode()
if useOverlay :
overlayNode = osgSim.OverlayNode(technique)
# insert the OverlayNode between the coordinate system node and its children.
for(unsigned int i=0 i<csn.getNumChildren() ++i)
overlayNode.addChild( csn.getChild(i) )
csn.removeChildren(0, csn.getNumChildren())
csn.addChild(overlayNode)
# tell the overlay node to continously update its overlay texture
# as we know we'll be tracking a moving target.
overlayNode.setContinuousUpdate(True)
cessna = osgDB.readNodeFile("cessna.osgt")
if cessna :
s = 200000.0 / cessna.getBound().radius()
scaler = osg.MatrixTransform()
scaler.addChild(cessna)
scaler.setMatrix(osg.Matrixd.scale(s,s,s)*osg.Matrixd.rotate(rotation))
scaler.getOrCreateStateSet().setMode(GL_RESCALE_NORMAL,osg.StateAttribute.ON)
if addFireEffect :
center = cessna.getBound().center()
fire = osgParticle.FireEffect(center, 10.0)
scaler.addChild(fire)
if False :
ss = osgSim.SphereSegment(
osg.Vec3(0.0,0.0,0.0), # center
19.9, # radius
osg.DegreesToRadians(135.0),
osg.DegreesToRadians(240.0),
osg.DegreesToRadians(-10.0),
osg.DegreesToRadians(30.0),
60)
scaler.addChild(ss)
mt = osg.MatrixTransform()
mt.addChild(scaler)
if not nc : nc = ModelPositionCallback(speed)
mt.setUpdateCallback(nc)
csn.addChild(mt)
# if we are using an overaly node, use the cessna subgraph as the overlay subgraph
if overlayNode.valid() :
overlayNode.setOverlaySubgraph(mt)
tm = osgGA.NodeTrackerManipulator()
tm.setTrackerMode(trackerMode)
tm.setRotationMode(rotationMode)
tm.setTrackNode(scaler)
else:
print "Failed to read cessna.osgt"
# set up camera manipulators.
keyswitchManipulator = osgGA.KeySwitchMatrixManipulator()
if tm.valid() : keyswitchManipulator.addMatrixManipulator( ord("0"), "NodeTracker", tm )
keyswitchManipulator.addMatrixManipulator( ord("1"), "Trackball", osgGA.TrackballManipulator() )
keyswitchManipulator.addMatrixManipulator( ord("2"), "Flight", osgGA.FlightManipulator() )
keyswitchManipulator.addMatrixManipulator( ord("3"), "Drive", osgGA.DriveManipulator() )
keyswitchManipulator.addMatrixManipulator( ord("4"), "Terrain", osgGA.TerrainManipulator() )
if not pathfile.empty() :
apm = osgGA.AnimationPathManipulator(pathfile)
if apm or not apm.valid() :
num = keyswitchManipulator.getNumMatrixManipulators()
keyswitchManipulator.addMatrixManipulator( ord("5"), "Path", apm )
keyswitchManipulator.selectMatrixManipulator(num)
viewer.setCameraManipulator( keyswitchManipulator )
# viewer.setThreadingModel(osgViewer.Viewer.SingleThreaded)
return viewer.run()
if __name__ == "__main__":
main(sys.argv)
viewer.addEventHandler( osgGA.StateSetManipulator(viewer.getCamera().getOrCreateStateSet()) )
# add the thread model handler
viewer.addEventHandler(osgViewer.ThreadingHandler)()
# add the window size toggle handler
viewer.addEventHandler(osgViewer.WindowSizeHandler)()
# add the stats handler
statsHandler = osgViewer.StatsHandler()
viewer.addEventHandler(statsHandler)
initUserStats(statsHandler)
# add the help handler
viewer.addEventHandler(osgViewer.HelpHandler(arguments.getApplicationUsage()))
# load the data
loadedModel = osgDB.readNodeFiles(arguments)
if not loadedModel :
print arguments.getApplicationName(), ": No data loaded"
return 1
# any option left unread are converted into errors to write out later.
arguments.reportRemainingOptionsAsUnrecognized()
# report any errors if they have occurred when parsing the program arguments.
if arguments.errors() :
arguments.writeErrorMessages(std.cout)
return 1
# add the state manipulator
viewer.addEventHandler( osgGA.StateSetManipulator(viewer.getCamera().getOrCreateStateSet()) )
# add the thread model handler
viewer.addEventHandler(osgViewer.ThreadingHandler)()
# add the window size toggle handler
viewer.addEventHandler(osgViewer.WindowSizeHandler)()
# add the stats handler
viewer.addEventHandler(osgViewer.StatsHandler)()
# add the help handler
viewer.addEventHandler(osgViewer.HelpHandler(psr.getApplicationUsage()))
# add the LOD Scale handler
viewer.addEventHandler(osgViewer.LODScaleHandler)()
# add the screen capture handler
viewer.addEventHandler(osgViewer.ScreenCaptureHandler)()
viewer.setSceneData(root)
return viewer.run()
if __name__ == "__main__":
