Method intersection

core/math/aabb.cpp:87–122

}

AABB AABB::intersection(const AABB &p_aabb) const {
#ifdef MATH_CHECKS
	if (unlikely(size.x < 0 || size.y < 0 || size.z < 0 || p_aabb.size.x < 0 || p_aabb.size.y < 0 || p_aabb.size.z < 0)) {
		ERR_PRINT("AABB size is negative, this is not supported. Use AABB.abs() to get an AABB with a positive size.");
	}
#endif
	Vector3 src_min = position;
	Vector3 src_max = position + size;
	Vector3 dst_min = p_aabb.position;
	Vector3 dst_max = p_aabb.position + p_aabb.size;

	Vector3 min, max;

	if (src_min.x > dst_max.x || src_max.x < dst_min.x) {
		return AABB();
	} else {
		min.x = (src_min.x > dst_min.x) ? src_min.x : dst_min.x;
		max.x = (src_max.x < dst_max.x) ? src_max.x : dst_max.x;
	}

	if (src_min.y > dst_max.y || src_max.y < dst_min.y) {
		return AABB();
	} else {
		min.y = (src_min.y > dst_min.y) ? src_min.y : dst_min.y;
		max.y = (src_max.y < dst_max.y) ? src_max.y : dst_max.y;
	}

	if (src_min.z > dst_max.z || src_max.z < dst_min.z) {
		return AABB();
	} else {
		min.z = (src_min.z > dst_min.z) ? src_min.z : dst_min.z;
		max.z = (src_max.z < dst_max.z) ? src_max.z : dst_max.z;
	}

	return AABB(min, max - min);
}

// Note that this routine returns the BACKTRACKED (i.e. behind the ray origin)
// intersection point + normal if INSIDE the AABB.