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/*
* 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;
}
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