# Objective
- Fixes: #15663
## Solution
- Add an `is_forward_plane` method to `Aabb`, and a `contains_aabb`
method to `Frustum`.
## Test
- I have created a frustum with an offset along with three unit tests to
evaluate the `contains_aabb` algorithm.
## Explanation for the Test Cases
- To facilitate the code review, I will explain how the frustum is
created. Initially, we create a frustum without any offset and then
create a cuboid that is just contained within it.
<img width="714" alt="image"
src="https://github.com/user-attachments/assets/a9ac53a2-f8a3-4e09-b20b-4ee71b27a099">
- Secondly, we move the cuboid by 2 units along both the x-axis and the
y-axis to make it more general.
## Reference
- [Frustum
Culling](https://learnopengl.com/Guest-Articles/2021/Scene/Frustum-Culling#)
- [AABB Plane
intersection](https://gdbooks.gitbooks.io/3dcollisions/content/Chapter2/static_aabb_plane.html)
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Co-authored-by: IQuick 143 <IQuick143cz@gmail.com>
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