AABB collision for Unity3D

using UnityEngine;
using System.Collections;

public static class Aabb

{

    public static bool Colliding( GameObject a, GameObject b )
    {
        Rect aBox = a.BoxToRect();
        Rect bBox = b.BoxToRect();

        // Find out if these guys intersect
        return Intersect ( aBox, bBox );
    }

    // This checks the intersection between two rectangles.
    public static bool Intersect( Rect a, Rect b )
    {
        // Basic AABB collision detection. All of these must be true for there to be a collision.
        bool comp1 = a.yMin > b.yMax;
        bool comp2 = a.yMax < b.yMin;
        bool comp3 = a.xMin < b.xMax;
        bool comp4 = a.xMax > b.xMin;

        // This will only return true if all are true.
        return comp1 && comp2 && comp3 && comp4;
    }

    // This converts a BoxCollider2D to a rectangle for use in determining an intersection
    private static Rect BoxToRect ( this GameObject a )
    {
        // Finding the BoxCollider2D for the GameObject.
        BoxCollider2D aCollider = a.GetComponent<BoxCollider2D> ();

        // Grabbing the GameObject position, converting it to Vector2.
        Vector2 aPos = a.transform.position.V2();

        // Now that we have the object's worldspace location, we offset that to the BoxCollider's center
        aPos += aCollider.center;
        // From the center, we find the top/left corner by cutting the total height/width in half and
        // offset by that much
        aPos.x -= aCollider.size.x/2;
        aPos.y += aCollider.size.y/2;

        // Create a rectangle based on the top/left corner, and extending the rectangle
        // to the width/height
        return new Rect ( aPos.x, aPos.y, aCollider.size.x, -aCollider.size.y );
    }

    // Converts a Vector 3 to Vector 2
    private static Vector2 V2 ( this Vector3 v )
    {
        // Converts the Vector3 to a Vector2.
        return new Vector2 (v.x, v.y);
    }

}