dueca::TimeWarp Class Reference

Time warp for a triggering device. More...

#include <TimeWarp.hxx>

Inheritance diagram for dueca::TimeWarp:

Collaboration diagram for dueca::TimeWarp:

Public Member Functions
	TimeWarp (TriggerPuller &base, int warp=0)
	Constructor.
virtual	~TimeWarp ()
	Destructor.
void	warpTime (int w2)
	Change the warp time.
virtual const std::string &	getTargetName () const override
	Targets are usually "living" objects.
Public Member Functions inherited from dueca::TargetAndPuller
void	addTerm (TriggerPuller &p)
	Add another puller to this (and, or) combination of triggers.
void	addTerm (const boost::intrusive_ptr< TargetAndPuller > &p)
	Add another puller to this combination.
bool	removeTerm (TriggerPuller &p)
	Remove a term from this TriggerAnd or TriggerOr object.
Public Member Functions inherited from dueca::TriggerPuller
const std::string &	getTriggerName () const
	Find a name.

Additional Inherited Members
Protected Types inherited from dueca::TriggerPuller
typedef list< TargetData >	targetlist_type
	Combination of a target, someone to pull if requested, and the index that target needs to identify this puller.
Protected Member Functions inherited from dueca::TargetAndPuller
	TargetAndPuller (const std::string &name=std::string())
	Constructor.
virtual	~TargetAndPuller ()
	Destructor.
Protected Member Functions inherited from dueca::TriggerPuller
void	pull (const DataTimeSpec &ts)
	activate and notify the targets
	TriggerPuller (const std::string &name=std::string())
	Constructor.
virtual	~TriggerPuller ()
	Destructor.
virtual void	addTarget (const boost::intrusive_ptr< TriggerTarget > &target, unsigned id)
	Add a target to this puller, only called by TriggerTarget's setTrigger.
virtual void	removeTarget (const TriggerTarget *target)
	Remove a target from the puller, only called by destructor.
Protected Attributes inherited from dueca::TargetAndPuller
unsigned	name_psize
	Number of pullers when name calculated.
Protected Attributes inherited from dueca::TriggerPuller
targetlist_type	targets
	List of targets and indices.
std::bitset< MAX_MANAGERS >	activitylevels
	Index of activitymanager levels.
std::string	name
	Name, for debugging purposes.

Detailed Description

Time warp for a triggering device.

Say that you want to calculate your turbulence/wind field or whatever property that does not rely on input ahead of time. You could trigger on the ticker with a time warp:

// make a 'permanent' time warp (element of your class, or with
// 'new'
TimeWarp* tw = new TimeWarp(Ticker::single(), 20);
my_activity.setTrigger(*tw);

Now at – say – step 100-101, your activity gets triggered for 120-121, for a logical time that comes later (in the future) than the actual time of triggering. For negative warps the thing works the other way around.

Be careful when doing this with channels. If you timewarp into the (logical) future, the channel will not yet be filled with data from the time span you are referring to, and if you warp too much into the past, a stream channel may have run out of data.

Constructor & Destructor Documentation

TimeWarp()

dueca::TimeWarp::TimeWarp	(	TriggerPuller &	base,
		int	warp = 0 )

Constructor.

Parameters

base	Trigger pulling object whose triggering is to be warped
warp	Warp time, the time added to the triggering time specification. Positive means it becomes "logically" later, negative means it becomes locigally earlier.

Member Function Documentation

getTargetName()

virtual const std::string & dueca::TimeWarp::getTargetName ( ) const

overridevirtual

Targets are usually "living" objects.

To find them, use getName()

---

The documentation for this class was generated from the following file:

• /home/abuild/rpmbuild/BUILD/dueca-4.1.3/dueca/TimeWarp.hxx