The FarPlane field represents the far plane of the frustum, which is one of the six planes that define the boundaries of a frustum in 3D space. This plane is oriented to point inwards, towards the center of the frustum, and is used to determine the farthest extent of the viewable area in a 3D scene.

To access the FarPlane field, you need to have an instance of the Frustum struct. This field is public and non-static, meaning it is accessed through an instance of the Frustum rather than the class itself.

Example usage:

Frustum frustum = new Frustum();
Plane farPlane = frustum.FarPlane;
// Use farPlane for further calculations or checks