Apple Shake 4 - Manual (Page 946)

946 Chapter 31 Expressions and Scripting
The following expressions provide functions for curve analysis.
CSpline(cycle,
value@key1,
value@key2,
...)
Cardinal-spline interpolation, also known as Catmull-Rom splines.
CSplineV(time_value, cycle,
value@key1,
value@key2,
...)
Cardinal-spline interpolation, also known as Catmull-Rom splines.
JSpline(cycle,
value@key1,
value@key2,
...)
Jeffress-spline interpolation.
JSplineV(time_value, cycle,
value@key1,
value@key2,
...)
Jeffress-spline interpolation.
NSpline(cycle,
value@key1,
value@key2,
...)
Natural-spline interpolation.
NSplineV(time_value, cycle,
value@key1, value@key2,...) Natural-spline interpolation.
Hermite(cycle,
[value,tangent1,tangent2]@key1,
[value,tangent1,tangent2]@key2,
...)
Hermite-spline interpolation.
HermiteV(time_value, cycle,
[value,tangent1,tangent2]@key1,
[value,tangent1,tangent2]@key2,
...)
Hermite-spline interpolation.
Curve Functions Definition
Function Definition
getCurveMinMax(int minOrMax,
int begFrame, int endFrame,
float curveCurrentValue, const
char *curveName); Float. Returns the min or max value of the specified curve (plug)
over the specified frame range. If minOrMax is set to 0, then it
returns the min value. If minOrMax is set to 1, then it returns the
max value.
getCurveAvg(int begFrame, int
endFrame, float
curveCurrentValue, const char
*curveName); Float. Returns the average value of the specified curve over the
specified frame range.