{modifierName} turns a bone's movement into float curves. Use it when an animation graph needs motion values without sampling the original bone again.
Open a copy of the target Animation Sequence.
Open Window > Animation Data Modifiers and add {modifierName}.
Set the source and other properties described below, then apply the modifier.
Inspect the resulting curves and preview the animation.
| Property | Use |
|---|---|
SourceAnimation | Animation to sample. If unset, the modifier uses the sequence you apply it to. |
BoneName | Bone whose transform is sampled. |
RefBoneName | Bone sampled at time zero to establish the reference transform. If empty, the source bone supplies that reference. |
CurveName | Prefix added to the generated curve names. |
SampleRate | Samples per second. Use a positive value. |
The extractor records the source bone's transform relative to the reference pose sampled at the beginning. It does not recalculate the reference bone at every frame.
CurveNames holds the output suffixes used by the Blueprint. Playback and RefPose are working values maintained while applying it.
The modifier writes the sampled transform channels into float curves on the target sequence. Revert removes the curves built from the prefix and suffixes; it does not restore older curves with those names. Use a distinct prefix when keeping other authored curves.
{graphImage} ; export const Example = () => <>For a custom Sci-Fi motion, duplicate a character sequence, select a bone from its Skeleton, and use a new curve prefix. Apply the modifier and compare the extracted curves with the bone motion.
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