ofxImAnim

openFrameworks wrapper addon for ImAnim — a lightweight, zero-dependency animation engine for Dear ImGui.

ImAnim brings modern, buttery-smooth UI animations (tweens, timeline clips, paths, procedural effects, color blending, etc.) to ImGui while staying true to its immediate-mode philosophy. ofxImAnim makes it dead-simple to use all of that power inside openFrameworks (together with ofxImGui).

Example

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Features

• Animate float, ImVec2, ImVec4, int, and ImColor properties
• Timeline Clips with keyframes, looping, staggering, chaining and callbacks
• 30+ easing functions (springs, bounce, cubic-bezier, steps, etc.) + per-axis control
• Bézier curves, Catmull-Rom splines, motion paths and text-along-path
• Procedural animations (Perlin/Simplex noise, oscillators, shake, wiggle)
• Perceptual color blending (OKLAB / OKLCH)
• Transform animations (position, rotation, scale)
• Built-in debug inspector, profiler, save/load and memory tools

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Installation

1. Clone or download this repository into your openFrameworks/addons/ folder (or use the Project Generator). 2. Add ofxImAnim (and its dependency ofxImGui) to your project. 3. Make sure you have a working ImGui integration (recommended: ofxImGui).

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Dependencies

• ofxImGui (or any compatible Dear ImGui addon)

• Embedded

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Quick Usage

After ImGui::NewFrame() in your ofApp::draw():

// Update animation engine
iam_update_begin_frame();
iam_clip_update(ImGui::GetIO().DeltaTime);

// Your ImGui code with animations...
if (ImGui::Button("Animate Me")) {
    // example tween (see original ImAnim for full API)
    iam_tween_float("myValue", 0.0f, 1.0f, 0.6f, IAM_EASE_OUT_BOUNCE);
}

// After ImGui rendering
iam_clip_update(); // (or call once per frame as shown above)

Animated Tag

Ripple Button

"Wait" Button

Data Visualization

Showcase

Visual examples of ImAnim capabilities in action.

Stagger Animations

List Stagger	Grid Stagger	Card Stagger

Easing & Curves

Easing Gallery	Custom Bezier	Wave Animations

Colors & Transforms

Color Blending	Gradient	Transforms

Paths & Text

Motion Path	Text Effects	Variations

Procedural & Integration

Noise	ImGui Widgets	ImDrawList

Additional Examples

Oscillator Waves	Transform Layers