IlvLinearTimeConverter Class Reference

Linear time converter class. More...

#include <ilviews/graphics/timeconverter.h>

Inheritance diagram for IlvLinearTimeConverter:

Public Member Functions
	IlvLinearTimeConverter ()
	Constructor. More...
	IlvLinearTimeConverter (const IlvLinearTimeConverter &)
	Copy Constructor.
	IlvLinearTimeConverter (IlDate refTime, IlvDuration unit)
	Constructor. More...
virtual IlDate	getTime (IlDouble units)
	Converts a double value to a IlDate. More...
IlvDuration	getUnitDuration ()
	Returns the unit duration. More...
virtual IlDouble	getUnits (IlDate time)
	Converts a IlDate to a double. More...
void	setUnitDuration (IlvDuration d)
	Sets the unit duration. More...
Public Member Functions inherited from IlvTimeConverter
	IlvTimeConverter (const IlvTimeConverter &)
	Copy Constructor.
	IlvTimeConverter (IlDate refTime)
	Constructor. More...
IlDate	getReferenceTime ()
	Returns the reference time. More...
void	lock ()
	Locks the time converter. More...
IlUInt	refCount () const
	Get the time converter reference count.
void	setReferenceTime (IlDate d)
	Sets the reference time. More...
virtual void	unLock ()
	Unlocks the resource. More...

Detailed Description

Linear time converter class.

Library: views

An IlvLinearTimeConverter is capable of converting a IlDate to a double value, and a double value to a IlDate in a linear way.

The converter is defined by a reference time and a unit duration. The reference time represents the time where the double value is 0, and the unit duration is the duration of a double value of 1.

Here is the conversion formula:

double value = ( time value - reference time ) / unit duration

Constructor & Destructor Documentation

IlvLinearTimeConverter() [1/2]

IlvLinearTimeConverter::IlvLinearTimeConverter	(	IlDate	refTime,
		IlvDuration	unit
	)

Constructor.

Creates a linear time converter.

Parameters

refTime	Gives the reference time for the new converter.
unit	Defines the unit time used for the conversion. The value provided should not be 0.

IlvLinearTimeConverter() [2/2]

IlvLinearTimeConverter::IlvLinearTimeConverter

(

)

Constructor.

Creates an IlvLinearTimeConverter with a reference time set to the current time, and a unit duration set to one hour.

Member Function Documentation

getTime()

virtual IlDate IlvLinearTimeConverter::getTime ( IlDouble  units )

virtual

Converts a double value to a IlDate.

Parameters

units

The double value to be converted.

Implements IlvTimeConverter.

getUnitDuration()

IlvDuration IlvLinearTimeConverter::getUnitDuration

(

)

Returns the unit duration.

See also

setUnitDuration

getUnits()

virtual IlDouble IlvLinearTimeConverter::getUnits ( IlDate  time )

virtual

Converts a IlDate to a double.

Parameters

time	The IlDate to be converted.

Implements IlvTimeConverter.

setUnitDuration()

void IlvLinearTimeConverter::setUnitDuration

(

IlvDuration

d

)

Sets the unit duration.

Parameters

d	The new unit duration. The value provided should not be 0.

See also

getUnitDuration