Related nodes. Attributes.
This node implements a curve simplification filter, combining nearly
colinear sets of input points into line segments,
and is used by the applyTake command to process recorded
motion capture data.
The attributes of the node are settings which affect the
operation of the filter as it is invoked by applyTake. These settings
are preserved when the scene file is saved.
Curve simplification is achieved by copying to the
filter output only those data value records which are the the endpoints
of ranges of nearly colinear values within the input data.
The colinearity test requires
that all deleted data points lie within a
parallelegram connecting the
end-points with width 2 * tolerance * (max - min),
where max and min are the extrema of the input data.
Points within these parrallelograms are considered colinear
and not copied to the output data values subject
to the following additional constraints.
- Data records with time stamps
closer than timeTolerance to the last output value time stamp
are considered duplicate and skipped.
- Ranges of input values combined into linear segements can be
no shorter that minTimeStep and no longer that maxTimeStep
- If subsequent data records contain identical values,
only the first record is treated as valid data,
unless allowDuplicates is set.
Since the base class inputs (comprising the input and output
data and timestamp values) to this node are unconnectable, this node
cannot be used in a traditional dependency graph sense.
|Node name||Parents||MFn type||Compatible function sets|
filter, filterResample, filterClosestSample, filterEuler
allowDuplicates, maxTimeStep, minTimeStep, timeTolerance, tolerance
|Long name (short name)||Type||Default||Flags|