User Manual

Table Of Contents
B-Spline
An alternative to the Bézier Spline, B-spline is another animation modifier in Fusion and is
typically applied to numerical values rather than point values. It is applied by right-clicking a
parameter and selecting Modify With > B-Spline.
Usage
This animation spline modifier has no actual Controls tab. However, the Spline Editor
displays the B-spline, and it can be controlled there. Notice that, though the actual
value of the second keyframe is 0, the value of the resulting spline is 0.33 due to the
unique smoothing and weighing algorithms of a B-spline.
The weight can be modified by clicking the control point to select it, holding the W
key, and moving the mouse left and right to lower or increase the tension. This is
also done with multiple selected control points simultaneously.
Calculation
Calculations are used to create indirect connections between parameters. A Calculation can
perform a mathematical expression based on two operands, where each operand can be
connected to another parameter or set manually.
Additionally, using Time offsets and Scale controls in the Time tab, the Calculation control can
access values of a parameter at times other than the current time.
The Calculation’s most common use is for connecting two parameters when one value range or
scope is inappropriate for the other parameter.
NOTE: The Expression modifier is essentially a more flexible version of the Calculation
modifier, with a single exception. It is far easier to manipulate the timing of the
operands provided in the Calculation modifier than it is to do so with an Expression.
Chapter – 111 Modifiers 2510