public sealed struct Sandbox.Sphere

If you're just opting for default Vertex and Pixel inputs which are usable on the default shading model, these are the reference member variables for each:

Networked GameObjects can be owned by a connection.

Scenes can be traced against using Scene.Trace - which uses a builder pattern to make construction a bit easier. At a minimum, traces have a shape, start, and end. You can also filter which specific tags will be hit or ignored, or opt-in to using your project's collision rule matrix by calling WithCollisionRules(tag).

S&box includes a full 3D and 2D physics system powered by the Source 2 engine, with great performance and stability. Rigidbodies, colliders, joints, raycasting, and trigger volumes are all usable through Components on GameObjects.

PostProcessVolume It is a component that applies a set of post-processing components when a camera is inside it.