Programmatic drag model with dynamic fluid properties

[jarreguit]

The current drag model in FARMS simulates fluid dynamics under the assumption of a static fluid, which limits the realism of simulations involving dynamic fluid environments (e.g., swimming in varying currents). While some basic functionality has been added to define fluid properties (such as mapping fluid velocity from an image), it lacks the ability to update these properties during runtime.

To enhance this capability:

• A programmatic interface will be developed that allows fluid properties (e.g., velocity, density) to be queried and updated dynamically at runtime.

• This interface will allow more complex fluid behaviours to be simulated, including changes in the fluid environment over time (e.g., waves, currents, etc.).

This issue tracks the development of a more flexible, programmatically controlled drag model that can dynamically update fluid properties during the simulation.