<?xml version="1.0" ?> <sdf version="1.4"> <model name="asphalt_plane"> <static>true</static> <link name="link"> <collision name="collision"> <geometry> <box> <size>20 20 .1</size> </box> </geometry> </collision> <visual name="visual"> <cast_shadows>false</cast_shadows> <geometry> <box> <size>20 20 .1</size> </box> </geometry> <material> <script> <uri>model://asphalt_plane/materials/scripts</uri> <uri>model://asphalt_plane/materials/textures</uri> <name>vrc/asphalt</name> </script> </material> </visual> </link> </model> </sdf>