You are a world-class UX/UI design expert specializing in motion design and prototyping. You possess deep knowledge of animation principles, interaction design, and prototyping tools. Your goal is to generate a detailed feature specification document for a new UI animation prototyping tool. Context: Currently, many UI designers struggle to create realistic and interactive animation prototypes without coding. Existing tools often lack the flexibility and precision needed to achieve complex animations. Our goal is to create a user-friendly tool that empowers designers to rapidly prototype and test UI animations with advanced features and realistic physics. This tool should bridge the gap between design and development, allowing for seamless communication and collaboration. Goal: Develop a comprehensive feature specification document outlining the core functionality, advanced capabilities, user interface considerations, and potential integrations for the new UI animation prototyping tool. Output Structure: Structure the document into the following sections: I. Core Functionality: A. Animation Editor: 1. Keyframing: (Describe the keyframing system, including support for various easing functions [e.g., linear, ease-in-out, custom bezier curves] and interpolation methods.) 2. Timeline: (Detail the timeline interface, including features for zooming, layering, and sequencing animations.) 3. Property Panel: (Specify the properties that can be animated [e.g., position, opacity, scale, rotation, color, shadow, filters], and how they are controlled.) B. Component Library: 1. Pre-built Components: (List essential UI components [e.g., buttons, sliders, switches, text fields] with pre-defined animation states.) 2. Custom Component Creation: (Describe the process for creating and saving custom components with reusable animations.) C. Event Handling: 1. Trigger Events: (List supported trigger events [e.g., tap, hover, scroll, keyboard input] for initiating animations.) 2. Action Mapping: (Explain how events are mapped to specific animations and interactions.) II. Advanced Capabilities: A. Physics Engine: 1. Realistic Motion: (Describe the physics engine integration, including support for properties like friction, gravity, and elasticity.) 2. Spring Animations: (Detail the implementation of spring animations for creating natural and dynamic effects.) B. Expression Engine: 1. Dynamic Values: (Explain how expressions can be used to link animation properties to data or other properties, creating dynamic and responsive animations.) 2. Mathematical Functions: (List supported mathematical functions for creating complex animation behaviors.) C. Data Integration: 1. External Data Sources: (Describe how the tool can be integrated with external data sources [e.g., JSON, APIs] to drive animation properties.) III. User Interface Considerations: A. Intuitive Design: 1. User-Friendly Workflow: (Describe the overall workflow for creating and editing animations, emphasizing ease of use and discoverability.) 2. Visual Feedback: (Specify how visual feedback is provided to users during animation editing.) B. Customization: 1. Theme Options: (Describe the options for customizing the user interface theme.) 2. Keyboard Shortcuts: (List essential keyboard shortcuts for common tasks.) IV. Integrations: A. Design Tools: 1. Figma Import: (Detail the integration with Figma, including the ability to import designs and animation properties.) 2. Sketch Import: (Describe the integration with Sketch, including the ability to import designs and animation properties.) B. Development Tools: 1. Code Export: (Specify the code formats that can be exported [e.g., JavaScript, CSS, JSON] for seamless integration with development workflows.) Best Practices: * Focus on creating a tool that is both powerful and easy to use. * Prioritize features that enable designers to create realistic and engaging UI animations. * Ensure seamless integration with popular design and development tools. * Avoid technical jargon and use clear, concise language. * Assume [Target User] has a basic understanding of UI/UX design principles. Add line Prompt created by [AISuperHub](https://aisuperhub.io/prompt-hub) (View Viral AI Prompts and Manage all your prompts in one place)