1 files changed, 51 insertions, 0 deletions
diff --git a/xbmc/input/InputTranslator.cpp b/xbmc/input/InputTranslator.cpp
new file mode 100644
index 0000000..6e3786d
--- /dev/null
+++ b/xbmc/input/InputTranslator.cpp
@@ -0,0 +1,51 @@
+/*
+ *  Copyright (C) 2018 Team Kodi
+ *  This file is part of Kodi - https://kodi.tv
+ *
+ *  SPDX-License-Identifier: GPL-2.0-or-later
+ *  See LICENSES/README.md for more information.
+ */
+
+#include "InputTranslator.h"
+
+using namespace KODI;
+using namespace INPUT;
+
+#define TAN_1_8_PI 0.4142136f // tan(1/8*PI)
+#define TAN_3_8_PI 2.4142136f // tan(3/8*PI)
+
+CARDINAL_DIRECTION CInputTranslator::VectorToCardinalDirection(float x, float y)
+{
+  if (y >= -x && y > x)
+    return CARDINAL_DIRECTION::UP;
+  else if (y <= x && y > -x)
+    return CARDINAL_DIRECTION::RIGHT;
+  else if (y <= -x && y < x)
+    return CARDINAL_DIRECTION::DOWN;
+  else if (y >= x && y < -x)
+    return CARDINAL_DIRECTION::LEFT;
+
+  return CARDINAL_DIRECTION::NONE;
+}
+
+INTERCARDINAL_DIRECTION CInputTranslator::VectorToIntercardinalDirection(float x, float y)
+{
+  if (y >= TAN_3_8_PI * -x && y > TAN_3_8_PI * x)
+    return INTERCARDINAL_DIRECTION::UP;
+  else if (y <= TAN_3_8_PI * x && y > TAN_1_8_PI * x)
+    return INTERCARDINAL_DIRECTION::RIGHTUP;
+  else if (y <= TAN_1_8_PI * x && y > TAN_1_8_PI * -x)
+    return INTERCARDINAL_DIRECTION::RIGHT;
+  else if (y <= TAN_1_8_PI * -x && y > TAN_3_8_PI * -x)
+    return INTERCARDINAL_DIRECTION::RIGHTDOWN;
+  else if (y <= TAN_3_8_PI * -x && y < TAN_3_8_PI * x)
+    return INTERCARDINAL_DIRECTION::DOWN;
+  else if (y >= TAN_3_8_PI * x && y < TAN_1_8_PI * x)
+    return INTERCARDINAL_DIRECTION::LEFTDOWN;
+  else if (y >= TAN_1_8_PI * x && y < TAN_1_8_PI * -x)
+    return INTERCARDINAL_DIRECTION::LEFT;
+  else if (y >= TAN_1_8_PI * -x && y < TAN_3_8_PI * -x)
+    return INTERCARDINAL_DIRECTION::LEFTUP;
+
+  return INTERCARDINAL_DIRECTION::NONE;
+}