FGFS-4.1/OpenSceneGraph
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Added support for user defined clipping of the precipitation effect, to test use:

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osgpreciptation lz.osg --clip 20
This commit is contained in:
Robert Osfield 2008-12-19 16:13:19 +00:00
parent aabf60c8e5
commit 02beb8c74a
1 changed files with 56 additions and 2 deletions
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58
examples/osgprecipitation/osgprecipitation.cpp
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@ -20,6 +20,17 @@
#include <osgDB/FileUtils>
#include <osgUtil/Optimizer>
#include <osgUtil/CullVisitor>
#include <osg/ClipNode>
#include <osgGA/TrackballManipulator>
#include <osgGA/FlightManipulator>
#include <osgGA/DriveManipulator>
#include <osgGA/KeySwitchMatrixManipulator>
#include <osgGA/StateSetManipulator>
#include <osgGA/AnimationPathManipulator>
#include <osgGA/TerrainManipulator>
#include <osgViewer/Viewer>
#include <osg/MatrixTransform>
@ -83,6 +94,32 @@ int main( int argc, char **argv )
// construct the viewer.
osgViewer::Viewer viewer;
// set up the camera manipulators.
{
osg::ref_ptr<osgGA::KeySwitchMatrixManipulator> keyswitchManipulator = new osgGA::KeySwitchMatrixManipulator;
keyswitchManipulator->addMatrixManipulator( '1', "Trackball", new osgGA::TrackballManipulator() );
keyswitchManipulator->addMatrixManipulator( '2', "Flight", new osgGA::FlightManipulator() );
keyswitchManipulator->addMatrixManipulator( '3', "Drive", new osgGA::DriveManipulator() );
keyswitchManipulator->addMatrixManipulator( '4', "Terrain", new osgGA::TerrainManipulator() );
std::string pathfile;
char keyForAnimationPath = '5';
while (arguments.read("-p",pathfile))
{
osgGA::AnimationPathManipulator* apm = new osgGA::AnimationPathManipulator(pathfile);
if (apm || !apm->valid())
{
unsigned int num = keyswitchManipulator->getNumMatrixManipulators();
keyswitchManipulator->addMatrixManipulator( keyForAnimationPath, "Path", apm );
keyswitchManipulator->selectMatrixManipulator(num);
++keyForAnimationPath;
}
}
viewer.setCameraManipulator( keyswitchManipulator.get() );
}
osg::ref_ptr<osgParticle::PrecipitationEffect> precipitationEffect = new osgParticle::PrecipitationEffect;
float intensity;
@ -109,6 +146,9 @@ int main( int argc, char **argv )
osg::Vec3 cellSize;
while (arguments.read("--cellSize", cellSize.x(), cellSize.y(), cellSize.z())) precipitationEffect->setCellSize(cellSize);
double clipDistance = 0.0;
while (arguments.read("--clip",clipDistance)) {}
osg::BoundingBox bb;
while (arguments.read("--boundingBox", bb.xMin(),
bb.yMin(),
@ -144,11 +184,25 @@ int main( int argc, char **argv )
// precipitationEffect->setUpdateCallback(new MyGustCallback);
osg::ref_ptr<osg::Group> group = new osg::Group;
group->addChild(precipitationEffect.get());
if (clipDistance!=0.0)
{
osg::ref_ptr<osg::ClipNode> clipNode = new osg::ClipNode;
clipNode->addClipPlane( new osg::ClipPlane( 0 ) );
clipNode->getClipPlane(0)->setClipPlane( 0.0, 0.0, -1.0, -clipDistance );
clipNode->setReferenceFrame(osg::ClipNode::ABSOLUTE_RF);
clipNode->addChild(precipitationEffect.get());
group->addChild(clipNode.get());
}
else
{
group->addChild(precipitationEffect.get());
}
group->addChild(loadedModel.get());
loadedModel->getOrCreateStateSet()->setAttributeAndModes(precipitationEffect->getFog());
// create the light