C++坐标旋转，两种方式总结

最近看到一个有意思的，学习总结如下

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C++坐标旋转

相对于坐标原点

void vRotationTransform(double dX, double dY, double dAngle, double &dbNewX, double &dbNewY)
{
    //此旋转是相对于坐标原点
    dbNewX = dX * cos(dAngle * PI / 180) - dY * sin(dAngle * PI / 180);
    dbNewY = dX * sin(dAngle * PI / 180) + dY * cos(dAngle * PI / 180);
}

相对于坐标系上任一点

void vRotationTransform(double dX, double dY, double dAngle, double &dbNewX, double &dbNewY)
{
    //此旋转是相对于任意点(centre_x, centre_y)
    dbNewX = (dX - centre_x) * cos(dAngle * PI / 180) - (dY - centre_y) * sin(dAngle * PI / 180) + centre_x;
    dbNewY = (dX - centre_x) * sin(dAngle * PI / 180) + (dY - centre_y) * cos(dAngle * PI / 180) + centre_y;
}

参考

链接1: https://sunriver2000.blog.youkuaiyun.com/article/details/104619972
链接2: https://blog.youkuaiyun.com/maitianpt/article/details/84983599