本文整理汇总了C++中tf::Quaternion::length方法的典型用法代码示例。如果您正苦于以下问题：C++ Quaternion::length方法的具体用法？C++ Quaternion::length怎么用？C++ Quaternion::length使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类tf::Quaternion的用法示例。
在下文中一共展示了Quaternion::length方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: complete_message_callback
//.........这里部分代码省略.........
}
//if a solution was found will publish
// need to convert to pose message so use
if (fc_found)
{
// converting the rotation from a cv matrix to quaternion, first need it as a matrix3x3
R_fc_tf[0][0] = R_fc.at<double>(0,0);
R_fc_tf[0][1] = R_fc.at<double>(0,1);
R_fc_tf[0][2] = R_fc.at<double>(0,2);
R_fc_tf[1][0] = R_fc.at<double>(1,0);
R_fc_tf[1][1] = R_fc.at<double>(1,1);
R_fc_tf[1][2] = R_fc.at<double>(1,2);
R_fc_tf[2][0] = R_fc.at<double>(2,0);
R_fc_tf[2][1] = R_fc.at<double>(2,1);
R_fc_tf[2][2] = R_fc.at<double>(2,2);
std::cout << "Final R:\n" << R_fc << std::endl;
// converting the translation to a vector 3
T_fc_tf.setX(T_fc.at<double>(0,0));
T_fc_tf.setY(T_fc.at<double>(0,1));
T_fc_tf.setZ(T_fc.at<double>(0,2));
std::cout << "Final T :\n" << T_fc << std::endl;
// getting the rotation as a quaternion
R_fc_tf.getRotation(Q_fc_tf);
std::cout << "current orientation:" << "\n\tx:\t" << Q_fc_tf.getX()
<< "\n\ty:\t" << Q_fc_tf.getY()
<< "\n\tz:\t" << Q_fc_tf.getZ()
<< "\n\tw:\t" << Q_fc_tf.getW()
<< std::endl;
std::cout << "norm of quaternion:\t" << Q_fc_tf.length() << std::endl;
// getting the negated version of the quaternion for the check
Q_fc_tf_negated = tf::Quaternion(-Q_fc_tf.getX(),-Q_fc_tf.getY(),-Q_fc_tf.getZ(),-Q_fc_tf.getW());
std::cout << "negated orientation:" << "\n\tx:\t" << Q_fc_tf_negated.getX()
<< "\n\ty:\t" << Q_fc_tf_negated.getY()
<< "\n\tz:\t" << Q_fc_tf_negated.getZ()
<< "\n\tw:\t" << Q_fc_tf_negated.getW()
<< std::endl;
std::cout << "norm of negated quaternion:\t" << Q_fc_tf_negated.length() << std::endl;
// showing the last orientation
std::cout << "last orientation:" << "\n\tx:\t" << Q_fc_tf_last.getX()
<< "\n\ty:\t" << Q_fc_tf_last.getY()
<< "\n\tz:\t" << Q_fc_tf_last.getZ()
<< "\n\tw:\t" << Q_fc_tf_last.getW()
<< std::endl;
std::cout << "norm of last quaternion:\t" << Q_fc_tf_last.length() << std::endl;
// checking if the quaternion has flipped
Q_norm_current_diff = std::sqrt(std::pow(Q_fc_tf.getX() - Q_fc_tf_last.getX(),2.0)
+ std::pow(Q_fc_tf.getY() - Q_fc_tf_last.getY(),2.0)
+ std::pow(Q_fc_tf.getZ() - Q_fc_tf_last.getZ(),2.0)
+ std::pow(Q_fc_tf.getW() - Q_fc_tf_last.getW(),2.0));
std::cout << "current difference:\t" << Q_norm_current_diff << std::endl;
Q_norm_negated_diff = std::sqrt(std::pow(Q_fc_tf_negated.getX() - Q_fc_tf_last.getX(),2.0)
+ std::pow(Q_fc_tf_negated.getY() - Q_fc_tf_last.getY(),2.0)
+ std::pow(Q_fc_tf_negated.getZ() - Q_fc_tf_last.getZ(),2.0)