Ease (Flowgraph Node)

Overview

• Node Name: Ease
• Category: simple
• File: extensions/flowgraph/nodes/math/ease.lua

Applies a smoothing/easing function to a numeric input. Input is expected to be between 0 and 1 but doesn't have to be.

Pin Schema

Input Pins

Output Pins

Internals

Available Easing Functions

• linear
• inQuad, outQuad, inOutQuad
• inCubic, outCubic, inOutCubic
• inQuart, outQuart, inOutQuart
• inQuint, outQuint, inOutQuint
• inSin, outSin, inOutSin
• inExp, outExp, inOutExp
• inCirc, outCirc, inOutCirc

How It Works

1. On init, the default function is linear.
2. The user selects an easing function via a combo dropdown in the node editor.
3. Each frame, if input value is provided, it is passed through the selected easing function and the result is output.
4. The easing function name is serialized/deserialized so it persists across save/load.

Lua Example

-- Easing functions are pure math: t → eased t
-- inQuad:    t*t
-- outQuad:   t*(2-t)
-- inOutQuad: t < 0.5 ? 2*t*t : -1+(4-2*t)*t

-- In a flowgraph, connect a normalized timer (0→1) to the input
-- and use the eased output for camera interpolation, UI animations, etc.

Key Dependencies

• ui_imgui - for the easing function selector dropdown in the editor
• _flowgraph_createNode() - standard flowgraph node registration

Additional Methods

C:_onDeserialized(nodeData)

Called after the node is deserialized (loaded from file). Restores runtime state from saved data.

Parameters:

• nodeData

C:_onSerialize(res)

Called when the node is serialized (saved to file). Returns data to persist.

Parameters:

• res

C:drawCustomProperties()

Custom ImGui drawing for the node's properties panel in the editor.

C:drawMiddle(builder, style)

Custom ImGui drawing in the middle section of the node in the editor.

Parameters:

• builder
• style

C:work()

Main work function called each frame/tick when the node is active.

See Also

• Accumulator (Flowgraph Node) - Related reference
• Increaser (Flowgraph Node) - Related reference
• Expression (Flowgraph Node) - Related reference
• FlowGraph Guide - Guide