AC3D Model Definition File (.ac)
The AC file extension, short for AC3D Model Definition File, is primarily used in the field of computer graphics for storing 3D model data. Developed by Inivis Limited, this format has a history dating back to the 1990s and is known for its simplicity and efficiency in representing 3D objects. AC files store polygonal data and associated material information, making them suitable for various applications including simulation, game development, and virtual reality. Its straightforward structure allows for easy manipulation and integration with numerous 3D modeling and rendering tools.