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Pub-Sub Class Template
include <ros/ros.h>
class SubscribeAndPublish
{
public:
SubscribeAndPublish()
{
//Topic you want to publish
pub_ = n_.advertise<PUBLISHED_MESSAGE_TYPE>("/published_topic", 1);
//Topic you want to subscribe
sub_ = n_.subscribe("/subscribed_topic", 1, &SubscribeAndPublish::callback, this);
}
void callback(const SUBSCRIBED_MESSAGE_TYPE& input)
{
PUBLISHED_MESSAGE_TYPE output;
//.... do something with the input and generate the output...
pub_.publish(output);
}
private:
ros::NodeHandle n_;
ros::Publisher pub_;
ros::Subscriber sub_;
};//End of class SubscribeAndPublish
int main(int argc, char **argv)
{
//Initiate ROS
ros::init(argc, argv, "subscribe_and_publish");
//Create an object of class SubscribeAndPublish that will take care of everything
SubscribeAndPublish SAPObject;
ros::spin();
return 0;
}