C++ Transform::GetInverse方法代码示例

DensityRegion::DensityRegion(const Spectrum &sa,
		const Spectrum &ss, float gg,
	 	const Spectrum &emit,
		const Transform &VolumeToWorld)
	: sig_a(sa), sig_s(ss), le(emit), g(gg)  {
	WorldToVolume = VolumeToWorld.GetInverse();
}

COREDLL void pbrtCamera(const string &name,
                       const ParamSet &params) {
	VERIFY_OPTIONS("Camera");
	renderOptions->CameraName = name;
	renderOptions->CameraParams = params;
	renderOptions->WorldToCamera = curTransform;
	namedCoordinateSystems["camera"] =
		curTransform.GetInverse();
}

// Shape Method Definitions
Shape::Shape(const Transform &o2w, bool ro)
	: ObjectToWorld(o2w), WorldToObject(o2w.GetInverse()),
	reverseOrientation(ro),
	transformSwapsHandedness(o2w.SwapsHandedness()) {
	// Update shape creation statistics
	static StatsCounter nShapesMade("Geometry",
	                                "Total shapes created");
	++nShapesMade;
}

	// HomogeneousVolume Public Methods
	HomogeneousVolume(const Spectrum &sa, const Spectrum &ss, float gg,
		 	const Spectrum &emit, const BBox &e,
			const Transform &v2w) {
		WorldToVolume = v2w.GetInverse();
		sig_a = sa;
		sig_s = ss;
		g = gg;
		le = emit;
		extent = e;
	}

Transform operator!( const Transform& t )
{
	return t.GetInverse();
}

//.........这里部分代码省略.........
		m_pPhotonMap->SetBufferSize( HUGE_VAL );
		m_tracedRays = 0;
		m_wPhoton = 0;
		m_totalPower = 0;
	}

	QVector< InstanceNode* > exportSuraceList;
	QModelIndex nodeIndex = m_pCurrentSceneModel->IndexFromNodeUrl( m_surfaceURL );
	if( !nodeIndex.isValid()  )	return;

	InstanceNode* surfaceNode = m_pCurrentSceneModel->NodeFromIndex( nodeIndex );
	if( !surfaceNode || surfaceNode == 0 )	return;
	exportSuraceList.push_back( surfaceNode );

	//UpdateLightSize();
	TSeparatorKit* concentratorRoot = static_cast< TSeparatorKit* >( m_pCurrentScene->getPart( "childList[0]", false ) );
	if ( !concentratorRoot )	return;

	SoGetBoundingBoxAction* bbAction = new SoGetBoundingBoxAction( SbViewportRegion() ) ;
	concentratorRoot->getBoundingBox( bbAction );

	SbBox3f box = bbAction->getXfBoundingBox().project();
	delete bbAction;
	bbAction = 0;

	BBox sceneBox;
	if( !box.isEmpty() )
	{
		sceneBox.pMin = Point3D( box.getMin()[0], box.getMin()[1], box.getMin()[2] );
		sceneBox.pMax = Point3D( box.getMax()[0], box.getMax()[1], box.getMax()[2] );
		if( lightKit ) lightKit->Update( sceneBox );
	}

	m_pCurrentSceneModel->UpdateSceneModel();

	//Compute bounding boxes and world to object transforms
	trf::ComputeSceneTreeMap( m_pRootSeparatorInstance, Transform( new Matrix4x4 ), true );

	m_pPhotonMap->SetConcentratorToWorld( m_pRootSeparatorInstance->GetIntersectionTransform() );

	QStringList disabledNodes = QString( lightKit->disabledNodes.getValue().getString() ).split( ";", QString::SkipEmptyParts );
	QVector< QPair< TShapeKit*, Transform > > surfacesList;
	trf::ComputeFistStageSurfaceList( m_pRootSeparatorInstance, disabledNodes, &surfacesList );
	lightKit->ComputeLightSourceArea( m_sunWidthDivisions, m_sunHeightDivisions, surfacesList );
	if( surfacesList.count() < 1 )	return;

	QVector< long > raysPerThread;
	int maximumValueProgressScale = 100;

	unsigned long  t1 = nOfRays/ maximumValueProgressScale;
	for( int progressCount = 0; progressCount < maximumValueProgressScale; ++ progressCount )
		raysPerThread<< t1;

	if( ( t1 * maximumValueProgressScale ) < nOfRays )	raysPerThread<< ( nOfRays - ( t1* maximumValueProgressScale) );

	Transform lightToWorld = tgf::TransformFromSoTransform( lightTransform );
	lightInstance->SetIntersectionTransform( lightToWorld.GetInverse() );

	// Create a progress dialog.
	QProgressDialog dialog;
	dialog.setLabelText( QString("Progressing using %1 thread(s)..." ).arg( QThread::idealThreadCount() ) );

	// Create a QFutureWatcher and conncect signals and slots.
	QFutureWatcher< void > futureWatcher;
	QObject::connect(&futureWatcher, SIGNAL(finished()), &dialog, SLOT(reset()));
	QObject::connect(&dialog, SIGNAL(canceled()), &futureWatcher, SLOT(cancel()));
	QObject::connect(&futureWatcher, SIGNAL(progressRangeChanged(int, int)), &dialog, SLOT(setRange(int, int)));
	QObject::connect(&futureWatcher, SIGNAL(progressValueChanged(int)), &dialog, SLOT(setValue(int)));

	QMutex mutex;
	QMutex mutexPhotonMap;
	QFuture< void > photonMap;
	if( transmissivity )
		photonMap = QtConcurrent::map( raysPerThread, RayTracer( m_pRootSeparatorInstance,
							 lightInstance, raycastingSurface, sunShape, lightToWorld,
							 transmissivity,
							 *m_pRandomDeviate,
							 &mutex, m_pPhotonMap, &mutexPhotonMap,
							 exportSuraceList ) );
	else
		photonMap = QtConcurrent::map( raysPerThread, RayTracerNoTr( m_pRootSeparatorInstance,
						lightInstance, raycastingSurface, sunShape, lightToWorld,
						*m_pRandomDeviate,
						&mutex, m_pPhotonMap, &mutexPhotonMap,
						exportSuraceList ) );

	futureWatcher.setFuture( photonMap );

	// Display the dialog and start the event loop.
	dialog.exec();
	futureWatcher.waitForFinished();

	m_tracedRays += nOfRays;

	double irradiance = sunShape->GetIrradiance();
	double inputAperture = raycastingSurface->GetValidArea();
	m_wPhoton = double ( inputAperture * irradiance ) / m_tracedRays;

	UpdatePhotonCounts();
}