ViennaLS

Create a Python-based mini-application that leverages the 'ViennaLS' library to simulate the evolution of a droplet on a hydrophobic surface over time. This application will serve as an educational tool and a practical demonstration of level set methods in action. Here are the steps and features you need to implement:

1. **Project Setup**: Begin by setting up a virtual environment for your project. Install the necessary packages including ViennaLS. Ensure all dependencies are listed in a requirements.txt file.
2. **Simulation Initialization**: Design a class named `DropletSimulator` which initializes the simulation parameters such as initial droplet shape, surface properties, and time step size.
3. **Level Set Evolution**: Use ViennaLS to evolve the level set function representing the droplet interface over time. Implement methods within the `DropletSimulator` class to handle the level set equations, ensuring accurate representation of droplet dynamics.
4. **Visualization**: Integrate visualization capabilities using matplotlib or a similar library to display the droplet's shape at each time step. Consider adding interactive elements if possible.
5. **User Interaction**: Allow users to input custom parameters like initial droplet radius, surface tension, and adhesion coefficient. Provide a simple command-line interface or a basic GUI for user interaction.
6. **Saving Results**: Implement functionality to save the final state of the simulation as an image file and/or log the simulation data to a CSV file for further analysis.
7. **Documentation**: Write comprehensive documentation explaining how to run the application, customize parameters, and interpret the results. Include examples and use cases.

By completing these steps, you'll create a versatile tool that not only demonstrates the power of ViennaLS but also provides insights into fluid dynamics and surface interactions.