那些遇到过的问题

小编Ora*_*kia的帖子

在将标题分为8个方向时,如何避免if/else if chain？

我有以下代码:

if (this->_car.getAbsoluteAngle() <= 30 || this->_car.getAbsoluteAngle() >= 330)
  this->_car.edir = Car::EDirection::RIGHT;
else if (this->_car.getAbsoluteAngle() > 30 && this->_car.getAbsoluteAngle() <= 60)
  this->_car.edir = Car::EDirection::UP_RIGHT;
else if (this->_car.getAbsoluteAngle() > 60 && this->_car.getAbsoluteAngle() <= 120)
  this->_car.edir = Car::EDirection::UP;
else if (this->_car.getAbsoluteAngle() > 120 && this->_car.getAbsoluteAngle() <= 150)
  this->_car.edir = Car::EDirection::UP_LEFT;
else if (this->_car.getAbsoluteAngle() > 150 && this->_car.getAbsoluteAngle() <= 210)
  this->_car.edir = Car::EDirection::LEFT;
else if (this->_car.getAbsoluteAngle() > 210 && this->_car.getAbsoluteAngle() <= 240)
  this->_car.edir = Car::EDirection::DOWN_LEFT;
else if (this->_car.getAbsoluteAngle() > 240 && this->_car.getAbsoluteAngle() <= …
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c++ if-statement

Ora*_*kia
2017 05-26
111
推荐指数
8
解决办法
1万
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