I am just starting off in robotics with my own little pet project: a line follower using openCV. However, I have no idea how to create a world in Gazebo for the bot. I went through the official Gazebo tutorials, however there doesn't seem to be stuff that can help me with this.
I intend to build a plane which will be the floor of the room and "paint" a line on it for the bot to follow. I know many pre-made models exist, but I would like to try it out on my own. How can I achieve this? Can Blender be used to create such a room?