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Opens a dropdown menu for selecting the Post-Infinity behavior of the selected keyframe or curve.
Flatten Tangent
Flattens the tangents of the selected keyframes horizontally.
Straighten Tangent
When using Broken Tangents on a keyframe, selecting this will straighten the tangent angles, but not unbreak them. The angles will straighten along an average angle between the two broken tangents.
Filter Tool
Opens the Filter Tool window, where you can bake, simplify, and perform other curve functions.
Constant
This is the default value for all new curves, and will cause the curve to retain its value leading up to the first key, and after the final key.
Cycle
The curve will repeat, using the absolute values of the keyframes for each loop segment.
Cycle with Offset
Similar to Cycle, the curve will repeat, however each loop segment's value will be set relative to the previous, causing the curve to compound for each loop.
Linear
The curve will project the first and last keyframe's tangent angle outward.
Oscillate (Ping Pong)
Similar to Cycle, the curve will repeat, however each loop segment will mirror the previous, going backward and forward for each loop.
Upper / Lower Bound
These properties control the locations of the upper and lower bounds of the lattice.
Left / Right Bound
These properties control the locations of the left and right bounds of the lattice.
Scale Center X / Y
These properties control the location of the scale pivot point.
Use Frame Bake
If this is enabled, then keyframes will be baked according to the Frames Per Second value of the sequence.
Bake Interval in Frames
The interval to bake keyframes relative to the framerate of the sequence. A value of 1 will bake every frame, and higher number values will skip that number of frames.
Bake Interval in Seconds
If Use Frame Bake is disabled, then this will be the seconds-based interval to bake keyframes.
Cutoff Frequency
This property controls the strength of the filtering effect. If Type is set to Lowpass, then you will need to set this value lower in order to produce a smoother result. If Type is set to Highpass, then you will need to set this value higher.
Type
Which types of frequencies are to be allowed through. If Lowpass is specified, then low frequency noise will be ignored and filtering will only occur on high frequency noise.
Response
The type of Fourier filter to use. Butterworth filter removes noise from data without affecting the curve's minimum or maximum values. Chebyshev filter removes noise from the data and can affect the curve's minimum or maximum values, but it will have a sharper cutoff at the specified frequency, and will improve accuracy in some cases.
Order
The number of samples to use when filtering in the time domain, which affects how steep the roll-off is for the filter.
Tolerance
The higher the Tolerance value, the more the filtered curve is allowed to deviate from the original, which causes more keyframes to be removed.
Try Remove User Set Tangent Keys
Enables using Sample Rate as the method to sample between evaluated keyframes, which includes keyframes with user tangents to be possibly removed during simplification.
Sample Rate
The frame rate at which the curve should be sampled to compare against Tolerance.
Remarks
ClickApplyto execute the Simplify command on all selected keyframes.
Unreal Engine 5.3 Documentation
What's New