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AC format files are file formats used for 3D model data storage, mainly used by AC3D software.
AC files use plain text format to store data of 3D models. The file content includes information such as vertices, surfaces, and materials.
Each .ac file can contain multiple objects, each with its own vertex and face definitions. With this structured text format, .ac files can effectively describe complex 3D models.
Draco is a glTF extension for mesh compression, an open source library developed by Google for compressing and decompressing 3D meshes to significantly reduce the size of 3D content. It compresses vertex positions, normals, colors, texture coordinates, and any other general vertex properties, increasing the efficiency and speed of transferring 3D content on the web.