Function ContainedBy 

pub fn ContainedBy(
    V0: FXMVECTOR,
    V1: FXMVECTOR,
    V2: FXMVECTOR,
    Plane0: GXMVECTOR,
    Plane1: HXMVECTOR,
    Plane2: HXMVECTOR,
    Plane3: CXMVECTOR<'_>,
    Plane4: CXMVECTOR<'_>,
    Plane5: CXMVECTOR<'_>,
) -> ContainmentType

Test a triangle vs 6 planes (typically forming a frustum).

Parameters

V0 A vector defining the triangle.

V1 A vector defining the triangle.

V2 A vector defining the triangle.

Plane0 A vector defining a plane.

Plane1 A vector defining a plane.

Plane2 A vector defining a plane.

Plane3 A vector defining a plane.

Plane4 A vector defining a plane.

Plane5 A vector defining a plane.

Return value

A ContainmentType value indicating whether the triangle is contained within the planes.

Remarks

Typically the six planes passed to this function represent a frustum.

Reference

https://docs.microsoft.com/en-us/windows/win32/api/directxcollision/nf-directxcollision-containedby