Query in turtlesim tf tutorials.
I am currently going through the tf tutorials and have a doubt in particular in the tf listener. In the code
while(n.ok())
{
tf::StampedTransform tf;
try{
listen.lookupTransform("/turtle2","/turtle1",ros::Time(0),tf);
}
What does turtle1 to turtle2 frame transformation mean? The turtle1 frame is already transformed to the world frame in the tf broadcaster?