So far, in every example urdf that I can find, the tag for ray sensors has one of three settings: `false`, `fan`, or `lines`. I've tried my best to search for some documentation on these options, but could find none. The goal is get Gazebo to represent a laser scan with just the range points (much like the `sensor_msgs/LaserScan` topic appears in Rviz).
Could someone point me to some documentation and/or explain if this is possible?
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