The angle, in radians relative to center, below which to render the ground color.
Mac Catalyst 13.0+Beta
By default, Model I/O renders an infinite sky above and below. If you set the groundColor property, Model I/O renders a solid color for all areas of the cube texture below this elevation. An elevation of 0.0 renders a horizon at the center elevation of the sky cube; negative values lead to a lower horizon and positive values to a higher horizon.
This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.