UnityEngine.SendMouseEvents.SendEvents C# (CSharp) Method

        private static void SendEvents(int i, HitInfo hit)
        {
            bool mouseButtonDown = Input.GetMouseButtonDown(0);
            bool mouseButton = Input.GetMouseButton(0);
            if (mouseButtonDown)
            {
                if (hit != 0)
                {
                    m_MouseDownHit[i] = hit;
                    m_MouseDownHit[i].SendMessage("OnMouseDown");
                }
            }
            else if (!mouseButton)
            {
                if (m_MouseDownHit[i] != 0)
                {
                    if (HitInfo.Compare(hit, m_MouseDownHit[i]))
                    {
                        m_MouseDownHit[i].SendMessage("OnMouseUpAsButton");
                    }
                    m_MouseDownHit[i].SendMessage("OnMouseUp");
                    m_MouseDownHit[i] = new HitInfo();
                }
            }
            else if (m_MouseDownHit[i] != 0)
            {
                m_MouseDownHit[i].SendMessage("OnMouseDrag");
            }
            if (HitInfo.Compare(hit, m_LastHit[i]))
            {
                if (hit != 0)
                {
                    hit.SendMessage("OnMouseOver");
                }
            }
            else
            {
                if (m_LastHit[i] != 0)
                {
                    m_LastHit[i].SendMessage("OnMouseExit");
                }
                if (hit != 0)
                {
                    hit.SendMessage("OnMouseEnter");
                    hit.SendMessage("OnMouseOver");
                }
            }
            m_LastHit[i] = hit;
        }

        private static void DoSendMouseEvents(int skipRTCameras)
        {
            Vector3 mousePosition   = Input.mousePosition;
            int     allCamerasCount = Camera.allCamerasCount;

            if (SendMouseEvents.m_Cameras == null || SendMouseEvents.m_Cameras.Length != allCamerasCount)
            {
                SendMouseEvents.m_Cameras = new Camera[allCamerasCount];
            }
            Camera.GetAllCameras(SendMouseEvents.m_Cameras);
            for (int i = 0; i < SendMouseEvents.m_CurrentHit.Length; i++)
            {
                SendMouseEvents.m_CurrentHit[i] = default(SendMouseEvents.HitInfo);
            }
            if (!SendMouseEvents.s_MouseUsed)
            {
                Camera[] cameras = SendMouseEvents.m_Cameras;
                for (int j = 0; j < cameras.Length; j++)
                {
                    Camera camera = cameras[j];
                    if (!(camera == null) && (skipRTCameras == 0 || !(camera.targetTexture != null)))
                    {
                        if (camera.pixelRect.Contains(mousePosition))
                        {
                            GUILayer component = camera.GetComponent <GUILayer>();
                            if (component)
                            {
                                GUIElement gUIElement = component.HitTest(mousePosition);
                                if (gUIElement)
                                {
                                    SendMouseEvents.m_CurrentHit[0].target = gUIElement.gameObject;
                                    SendMouseEvents.m_CurrentHit[0].camera = camera;
                                }
                                else
                                {
                                    SendMouseEvents.m_CurrentHit[0].target = null;
                                    SendMouseEvents.m_CurrentHit[0].camera = null;
                                }
                            }
                            if (camera.eventMask != 0)
                            {
                                Ray        ray        = camera.ScreenPointToRay(mousePosition);
                                float      z          = ray.direction.z;
                                float      distance   = (!Mathf.Approximately(0f, z)) ? Mathf.Abs((camera.farClipPlane - camera.nearClipPlane) / z) : float.PositiveInfinity;
                                GameObject gameObject = camera.RaycastTry(ray, distance, camera.cullingMask & camera.eventMask);
                                if (gameObject != null)
                                {
                                    SendMouseEvents.m_CurrentHit[1].target = gameObject;
                                    SendMouseEvents.m_CurrentHit[1].camera = camera;
                                }
                                else if (camera.clearFlags == CameraClearFlags.Skybox || camera.clearFlags == CameraClearFlags.Color)
                                {
                                    SendMouseEvents.m_CurrentHit[1].target = null;
                                    SendMouseEvents.m_CurrentHit[1].camera = null;
                                }
                                GameObject gameObject2 = camera.RaycastTry2D(ray, distance, camera.cullingMask & camera.eventMask);
                                if (gameObject2 != null)
                                {
                                    SendMouseEvents.m_CurrentHit[2].target = gameObject2;
                                    SendMouseEvents.m_CurrentHit[2].camera = camera;
                                }
                                else if (camera.clearFlags == CameraClearFlags.Skybox || camera.clearFlags == CameraClearFlags.Color)
                                {
                                    SendMouseEvents.m_CurrentHit[2].target = null;
                                    SendMouseEvents.m_CurrentHit[2].camera = null;
                                }
                            }
                        }
                    }
                }
            }
            for (int k = 0; k < SendMouseEvents.m_CurrentHit.Length; k++)
            {
                SendMouseEvents.SendEvents(k, SendMouseEvents.m_CurrentHit[k]);
            }
            SendMouseEvents.s_MouseUsed = false;
        }