SilverLiningNode::SilverLiningNode( const char* licenseUser, const char* licenseKey )
: _initialized(false)
{
_sky = new SkyDrawable(this);
_sky->setUseVertexBufferObjects( false );
_sky->setUseDisplayList( false );
_sky->getOrCreateStateSet()->setRenderBinDetails( 98, "RenderBin" );
_sky->getOrCreateStateSet()->setAttributeAndModes(
new osg::Depth(osg::Depth::LEQUAL, 0.0, 1.0, false) );
addDrawable( _sky.get() );
_cloud = new CloudDrawable(this);
_cloud->setUseVertexBufferObjects( false );
_cloud->setUseDisplayList( false );
_cloud->getOrCreateStateSet()->setRenderBinDetails( 99, "RenderBin" );
_cloud->setCullCallback( new AlwaysKeepCallback ); // This seems to avoid cloud to twinkle sometimes
addDrawable( _cloud.get() );
AtmosphereUpdater* updater = new AtmosphereUpdater;
setUpdateCallback( updater );
setCullCallback( updater );
setCullingActive( false );
getOrCreateStateSet()->setRenderBinDetails( 100, "RenderBin" );
_atmosphere = new SilverLining::Atmosphere( licenseUser, licenseKey );
_atmosphere->DisableFarCulling( true );
_atmosphere->EnableLensFlare( true );
const char* slPath = getenv( "SILVERLINING_PATH" );
if ( slPath )
_resourcePath = osgDB::convertFileNameToNativeStyle(std::string(slPath) + "/resources/");
}
void AbstractHimmel::setupNode(osg::StateSet* stateSet)
{
setCullingActive(false);
// Only draw at back plane.
osg::Depth* depth = new osg::Depth(osg::Depth::LEQUAL, 1.0, 1.0);
stateSet->setAttributeAndModes(depth, osg::StateAttribute::ON);
}
SkyBox::SkyBox()
{
setReferenceFrame( osg::Transform::ABSOLUTE_RF );
setCullingActive( false );
osg::StateSet* ss = getOrCreateStateSet();
ss->setAttributeAndModes( new osg::Depth(osg::Depth::LEQUAL, 1.0f, 1.0f) );
ss->setMode( GL_LIGHTING, osg::StateAttribute::OFF );
ss->setMode( GL_CULL_FACE, osg::StateAttribute::OFF );
ss->setRenderBinDetails( 5, "RenderBin" );
}
// create fake layer geometry
void CloudsLayer::_createGeometry()
{
// dummy bounding box callback
osg::Drawable::ComputeBoundingBoxCallback * pDummyBBCompute = new osg::Drawable::ComputeBoundingBoxCallback();
// create OSG geode with 1 drawable node
setCullingActive(false);
setDataVariance(osg::Object::STATIC);
// create tetrahedron around viewer (just to fill the whole volume)
osg::Geometry * box_geometry = new osg::Geometry;
box_geometry->setUseDisplayList(true);
box_geometry->setDataVariance(osg::Object::STATIC);
box_geometry->setComputeBoundingBoxCallback(pDummyBBCompute);
const float fSqrt3 = sqrtf(3.0f);
// create its' vertex
osg::Vec3Array * paBoxPointsPos = new osg::Vec3Array;
paBoxPointsPos->resize(4);
paBoxPointsPos->at(0).set(0.f, 0.f, +2.f);
paBoxPointsPos->at(1).set(-2.0f * fSqrt3, 0.f, -1.0f);
paBoxPointsPos->at(2).set(fSqrt3, -3.0f, -1.0f);
paBoxPointsPos->at(3).set(fSqrt3, +3.0f, -1.0f);
// set vertex array
paBoxPointsPos->setDataVariance(osg::Object::STATIC);
box_geometry->setVertexArray(paBoxPointsPos);
// draw elements command, that would be executed
// volume is made looking inside
osg::DrawElementsUShort * paBoxDrawElem = new osg::DrawElementsUShort(GL_TRIANGLES, 12);
paBoxDrawElem->at(0) = 0;
paBoxDrawElem->at(1) = 2;
paBoxDrawElem->at(2) = 1;
paBoxDrawElem->at(3) = 0;
paBoxDrawElem->at(4) = 3;
paBoxDrawElem->at(5) = 2;
paBoxDrawElem->at(6) = 0;
paBoxDrawElem->at(7) = 1;
paBoxDrawElem->at(8) = 3;
paBoxDrawElem->at(9) = 1;
paBoxDrawElem->at(10) = 2;
paBoxDrawElem->at(11) = 3;
// add DIP
paBoxDrawElem->setDataVariance(osg::Object::STATIC);
box_geometry->addPrimitiveSet(paBoxDrawElem);
// all is done, so add box to this geode
addDrawable(box_geometry);
}