Unreal Engine 4.26 Documentation

Unreal Engine 4.27 Documentation

Unreal Engine 5.0 Documentation

Unreal Engine 5.1 Documentation

Unreal Engine 5.2 Documentation

> Animating Characters and Objects > Skeletal Mesh Animation System > Animation Blueprints > Animation Node Reference > Skeletal Controls > Modify Curve

Light Theme

Dark Theme

Modify Curve

Describes the Modify Curve node which can be used to modify animation curves with arbitrary logic inside Animation Graphs.

See Also

On this page

Property Reference

With the Modify Curve Animation Blueprint node, you can blend, scale and remap Animation Curves at runtime.

By right-clicking the Modify Curve node in the AnimGraph, you can select one of the character's Animation Curves from the Add Curve Pin option in the context menu to add a pin that corresponds to the selected Animation Curve.

Here, a Hue Shift curve has been added to the Modify Curve node to alter the hue of the characters material.


Description	Graph	Restults
Here the Hue Shift curve has been set to a static value of 1.0 on the Modify Curve Node in the AnimGraph. This returns a static value from the curve, resulting in the character displaying a single color material.
Here a sine wave is set to drive the Hue Shift curve value on the Modify Curve node in the AnimGraph. This returns a dynamic value, resulting in the character displaying a rotating color material.

Property Reference

Here you can reference a list of the Modify Curve node's properties.


Property	Description
Curve Map	Here you can set any curve maps. Curve maps are associative, unordered containers that associate a set of keys with a set of values. Each key in a map must be unique, but values can be duplicated.
Curve Values	Curve values are the values used to drive curve modifications. You can add a new curve by right-clicking the Modify Curve node in the AnimGraph and selecting one of the character's Animation Cures from the Add Curve Pin option in the context menu. These added curve pins can then drive their respective curves with a value.
Alpha	Set the alpha value to control the blend of the modified curve pose and the source animation pose. By default this property appears as a pin on the node in the AnimGraph.
Apply Mode	Set the method to apply the modification to the Animation Curve. The application modification options include: Add: Add new value to input curve value. Scale: Scale input value by new value. Blend: Blend input with new curve value, using alpha setting on the node. Weighted Moving Average: Bend the new curve value with the last curve value using Alpha to determine eht weighting. For example, .5 is a moving average, higher values react to new values faster lower slower. Remap Curve: Rempas the new curve values between the Curve Values entry and 1.0. For example, .5 in Curve Values makes 0.51 map to 0.02.