Exemplo n.º 1
0
IECore::CameraPtr GafferScene::camera( const ScenePlug *scene, const ScenePlug::ScenePath &cameraPath, const IECore::CompoundObject *globals )
{
	ConstCompoundObjectPtr computedGlobals;
	if( !globals )
	{
		computedGlobals = scene->globalsPlug()->getValue();
		globals = computedGlobals.get();
	}

	std::string cameraName;
	ScenePlug::pathToString( cameraPath, cameraName );

	if( !exists( scene, cameraPath ) )
	{
		throw IECore::Exception( "Camera \"" + cameraName + "\" does not exist" );
	}

	IECore::ConstCameraPtr constCamera = runTimeCast<const IECore::Camera>( scene->object( cameraPath ) );
	if( !constCamera )
	{
		std::string path; ScenePlug::pathToString( cameraPath, path );
		throw IECore::Exception( "Location \"" + cameraName + "\" is not a camera" );
	}

	IECore::CameraPtr camera = constCamera->copy();
	camera->setName( cameraName );

	const BoolData *cameraBlurData = globals->member<BoolData>( "option:render:cameraBlur" );
	const bool cameraBlur = cameraBlurData ? cameraBlurData->readable() : false;
	camera->setTransform( transform( scene, cameraPath, shutter( globals ), cameraBlur ) );

	applyCameraGlobals( camera.get(), globals );
	return camera;
}
Exemplo n.º 2
0
void Render::outputCamera( const ScenePlug *scene, const IECore::CompoundObject *globals, IECore::Renderer *renderer ) const
{
	// get the camera from the scene
	
	const StringData *cameraPathData = globals->member<StringData>( "render:camera" );
	IECore::CameraPtr camera = 0;
	if( cameraPathData )
	{
		ScenePlug::ScenePath cameraPath;
		ScenePlug::stringToPath( cameraPathData->readable(), cameraPath );
		
		IECore::ConstCameraPtr constCamera = runTimeCast<const IECore::Camera>( scene->object( cameraPath ) );
		if( constCamera )
		{
			camera = constCamera->copy();
			const BoolData *cameraBlurData = globals->member<BoolData>( "render:cameraBlur" );
			const bool cameraBlur = cameraBlurData ? cameraBlurData->readable() : false;
			camera->setTransform( transform( scene, cameraPath, shutter( globals ), cameraBlur ) );
		}
	}
	
	if( !camera )
	{
		camera = new IECore::Camera();
	}
	
	// apply the resolution
	
	const V2iData *resolutionData = globals->member<V2iData>( "render:resolution" );
	if( resolutionData )
	{
		camera->parameters()["resolution"] = resolutionData->copy();
	}
	
	camera->addStandardParameters();
	
	// apply the shutter
	
	camera->parameters()["shutter"] = new V2fData( shutter( globals ) );
	
	// and output
	
	camera->render( renderer );
	
}
Exemplo n.º 3
0
void SceneView::updateLookThrough()
{
	Context::Scope scopedContext( getContext() );

	const ScenePlug *scene = preprocessedInPlug<ScenePlug>();
	ConstCompoundObjectPtr globals = scene->globalsPlug()->getValue();
	
	string cameraPathString;
	IECore::CameraPtr camera;
	if( lookThroughEnabledPlug()->getValue() )
	{
		cameraPathString = lookThroughCameraPlug()->getValue();
		if( cameraPathString.empty() )
		{
			if( const StringData *cameraPathData = globals->member<StringData>( "render:camera" ) )
			{
				cameraPathString = cameraPathData->readable();
			}
		}
		
		if( !cameraPathString.empty() )
		{
			ScenePlug::ScenePath cameraPath;
			ScenePlug::stringToPath( cameraPathString, cameraPath );
			
			try
			{
				ConstCameraPtr constCamera = runTimeCast<const IECore::Camera>( scene->object( cameraPath ) );
				if( constCamera )
				{
					camera = constCamera->copy();
					camera->setTransform( new MatrixTransform( scene->fullTransform( cameraPath ) ) );
					
					// if the camera has an existing screen window, remove it.
					// if we didn't, it would conflict with the resolution we set
					// below, yielding squashed/stretched images.
					/// \todo Properly specify how cameras are represented in Gaffer
					/// (the Cortex representation is very renderer-centric, with no
					/// real world parameters like film back) so that this isn't necessary,
					/// and add nice overlays for resolution gate etc.
					camera->parameters().erase( "screenWindow" );
				}
			}
			catch( ... )
			{
				// if an invalid path has been entered for the camera, computation will fail.
				// we can just ignore that and fall through to lock to the current camera instead.
				cameraPathString = "";
			}
		}
		
		if( !camera )
		{
			// we couldn't find a render camera to lock to, but we can lock to the current
			// camera instead.
			camera = viewportGadget()->getCamera()->copy();
		}
	}
	
	if( camera )
	{
		camera->parameters()["resolution"] = new V2iData( viewportGadget()->getViewport() );
		viewportGadget()->setCamera( camera );
		viewportGadget()->setCameraEditable( false );
		
		StringVectorDataPtr invisiblePaths = new StringVectorData();
		invisiblePaths->writable().push_back( cameraPathString );
		hideFilter()->pathsPlug()->setValue( invisiblePaths );
	}
	else
	{
		viewportGadget()->setCameraEditable( true );
		hideFilter()->pathsPlug()->setToDefault();
	}
}