Class: Smoother

PathBuilding.Pipeline.Smoother()

Smoothening filter for path values.Each point is a liner combination of the last several points. Coefficients are produced using multi-pass double exponential smoothing.The default value of movingAverageWindowSize is 15, which is tuned for hand writing data (sequence of xy positions) at 60Hz. If the input is for example 120Hz, set movingAverageWindowSize to 30.

Constructor

new Smoother()

Since:

• version 3.0

Extends

• PathBuilding.Pipeline.DataSequenceProcessor

Methods

configure(dimsCount, movingAverageWindowSizeopt)

Parameters:

Name	Type	Attributes	Default	Description
dimsCount	int			The number of dimensions (properties) of a path data point
movingAverageWindowSize	int	<optional>	15	Window size of the smoothing filter.Default value is suitable for input on 60Hz.If the input is for example 120Hz, set movingAverageWindowSize to 30.

process(input, typeopt, lastSegmentopt)

Invokes input processing of particular implementation

Parameters:

Name	Type	Attributes	Default	Description
input	PathBuilding.Pipeline.Input			Newly added stroke data that must be processed
type	PathBuilding.Pipeline.SegmentType	<optional>	DataSequenceProcessor.SegmentType.INTEGRAL	Input type
lastSegment	boolean	<optional>	true	Applicable for SegmentType.ADDITION only, describe end of the input

Overrides:

• PathBuilding.Pipeline.DataSequenceProcessor#process

reset()

Resets the processor to its initial state

Overrides:

• PathBuilding.Pipeline.DataSequenceProcessor#reset

Type Definitions

Input

Smoother input type

Type:

• Array.<float>

Output

Smoother output type

Type:

• Array.<float>

PipelineStage

Type:

• PathBuilding.Pipeline.Smoother

Properties:

Name	Type	Attributes	Default	Description
index	int	<optional>	2
previous	PathBuilding.Pipeline.PathProducer
next	PathBuilding.Pipeline.SplineProducer

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