FGFS-4.1/OpenSceneGraph
3
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Implemented seemless update of precipitation properties.

Browse Source
This commit is contained in:
Robert Osfield
2006-04-25 12:39:00 +00:00
parent 6558a5589f
commit 039457700d
3 changed files with 112 additions and 170 deletions
Download Patch File Download Diff File Expand all files Collapse all files

73
examples/osgprecipitation/osgprecipitation.cpp
View File

@@ -31,71 +31,19 @@ class MyGustCallback : public osg::NodeCallback
osgParticle::PrecipitationEffect* pe = dynamic_cast<osgParticle::PrecipitationEffect*>(node);
float value = sin(nv->getFrameStamp()->getReferenceTime());
if (value<-0.5) pe->setWind(osg::Vec3(5.0f,0.0f,0.0f));
else pe->setWind(osg::Vec3(1.0,0.0,0.0));
if (value<-0.5)
{
pe->snow(1.0);
}
else
{
pe->rain(0.5);
}
traverse(node, nv);
}
};
#if 0
osg::Node* createModel(osg::Node* loadedModel, osgParticle::PrecipitationParameters& parameters)
{
osg::Group* group = new osg::Group;
osg::BoundingBox bb(0.0, 0.0, 0.0, 100.0, 100.0, 100.0);
if (loadedModel)
{
group->addChild(loadedModel);
osg::BoundingSphere bs = loadedModel->getBound();
bb.set( -500, -500, 0, +500, +500, 10);
parameters.boundingBox = bb;
osg::StateSet* stateset = loadedModel->getOrCreateStateSet();
osg::Fog* fog = new osg::Fog;
if (parameters.fogExponent<1.0)
{
fog->setMode(osg::Fog::LINEAR);
}
else if (parameters.fogExponent<2.0)
{
fog->setMode(osg::Fog::EXP);
}
else
{
fog->setMode(osg::Fog::EXP2);
}
fog->setDensity(parameters.fogDensity);
fog->setStart(0.0f);
fog->setEnd(parameters.fogEnd);
fog->setColor(parameters.fogColour);
stateset->setAttributeAndModes(fog, osg::StateAttribute::ON);
osg::LightSource* lightSource = new osg::LightSource;
group->addChild(lightSource);
osg::Light* light = lightSource->getLight();
light->setLightNum(0);
light->setPosition(osg::Vec4(0.0f,0.0f,1.0f,0.0f)); // directional light from above
light->setAmbient(osg::Vec4(0.8f,0.8f,0.8f,1.0f));
light->setDiffuse(osg::Vec4(0.2f,0.2f,0.2f,1.0f));
light->setSpecular(osg::Vec4(0.2f,0.2f,0.2f,1.0f));
}
group->addChild(createCellRainEffect(parameters));
return group;
}
#endif
int main( int argc, char **argv )
{
@@ -172,9 +120,6 @@ int main( int argc, char **argv )
viewer.setClearColor( precipitationEffect->getFog()->getColor() );
// now force the effect to update all its internal state.
precipitationEffect->update();
// if user request help write it out to cout.
if (arguments.read("-h") || arguments.read("--help"))
@@ -222,8 +167,6 @@ int main( int argc, char **argv )
light->setSpecular(osg::Vec4(0.2f,0.2f,0.2f,1.0f));
// set the scene to render
viewer.setSceneData(group.get());