CubicBezier: A Bézier Curve Generator for macOS

CubicBezier is a lightweight, visual Bézier curve generator designed specifically for macOS. It enables developers and designers to adjust timing function parameters through an intuitive graphical interface, with real-time animation previews, greatly simplifying animation development for CSS and iOS/macOS platforms.

🚀 Key Features

Intuitive Interactive Adjustment

• Visual Drag-and-Drop Control: The interface features a clean design with two draggable control points (small circles), allowing you to shape the Bézier curve directly on a 2D coordinate plane—just like in graphic design applications.
• Real-time Parameter Feedback: As you drag the control points, the interface instantly displays the corresponding coordinates (x1, y1, x2, y2), which directly map to parameters required by cubic-bezier() or CAMediaTimingFunction.

Practical Preview and Comparison Tools

• Real-time Animation Preview: After adjusting the curve, the application immediately plays an internal animation example (e.g., a moving ball or view transformation), enabling you to visually experience the easing effect defined by the curve.
• Curve Library and Comparison: Includes preset common Bézier curves (such as Ease, Ease-in, Ease-out, etc.), and supports displaying and playing your custom curve alongside these presets for side-by-side comparison, helping you fine-tune the ideal animation timing.

Cross-platform Development Support

• CSS Code Generation: One-click copy of the current curve’s CSS code in the format cubic-bezier(x1, y1, x2, y2) for direct use in your stylesheets.
• iOS/macOS Code Generation: Generates initialization code for CAMediaTimingFunction in Swift/Objective-C, such as CAMediaTimingFunction(controlPoints: x1, y1, x2, y2), seamlessly integrating with native app development.

✨ Advantages and Highlights

1. Lightweight and Efficient: This is a standalone desktop utility that requires no internet connection and no complex IDE or design software. It focuses solely on debugging Bézier curves, offering fast startup and smooth operation.
2. Boosts Development Efficiency: Say goodbye to manually guessing values and repeatedly tweaking numbers. With WYSIWYG graphical adjustment and instant preview, you can quickly determine and obtain optimal easing parameters, significantly reducing animation debugging time.
3. Ideal for Learning and Teaching: For beginners who want to understand how Bézier curves affect animation timing, this tool serves as a perfect visual learning aid. Dragging control points to observe changes in curve shape and animation speed makes abstract concepts tangible.
4. Open Source and Free: The project is open-sourced on GitHub under the GPL-3.0 license. You can use it freely, inspect the source code, modify it to suit your needs, or contribute to the project. Community-driven development ensures transparency and continuous improvement.

🛠 How to Get and Use

Download Method:

Use Cases: Whether you’re writing CSS animations for web pages or developing native macOS/iOS applications, CubicBezier is an essential tool whenever you need to define custom easing effects for UI elements (such as movement, fade-in/fade-out, scaling, etc.).

In summary, CubicBezier is a compact, powerful macOS utility crafted to enhance animation workflow efficiency. By transforming mathematical parameters into intuitive visual interaction, it’s a valuable addition to the toolkit of frontend and mobile app developers.