The TopPlane field represents the top plane of the frustum, oriented inwards. It is a part of the Frustum structure, which is used to define a 3D space that can be used for various calculations, such as visibility determination and collision detection.
To access the TopPlane of a Frustum instance, simply use the field directly. This field is public and non-static, meaning it is accessed through an instance of the Frustum struct.
// Example of accessing the TopPlane of a Frustum Frustum frustum = new Frustum(); Plane topPlane = frustum.TopPlane; // Use the topPlane for further calculations or checks Vector3 normal = topPlane.Normal; float distance = topPlane.Distance;