+ <link name="sonar_forward">
+ <visual>
+ <geometry>
+ <box size="0.016 0.044 0.02"/>
+ </geometry>
+ <origin xyz="${0.016/2} 0 0" rpy="0 0 0"/>
+ <material name="green">
+ <color rgba="0 1 0 0.8"/>
+ </material>
+ </visual>
+ </link>
+
+ <link name="sonar_backward">
+ <visual>
+ <geometry>
+ <box size="0.016 0.044 0.02"/>
+ </geometry>
+ <origin xyz="${0.016/2} 0 0" rpy="0 0 0"/>
+ <material name="green">
+ <color rgba="0 1 0 0.8"/>
+ </material>
+ </visual>
+ </link>
+
+ <link name="ir_left">
+ <visual>
+ <geometry>
+ <box size="0.015 0.015 0.046"/>
+ </geometry>
+ <origin xyz="${-0.015/2} 0 0" rpy="0 0 0"/>
+ <material name="black">
+ <color rgba="0 0 0 1"/>
+ </material>
+ </visual>
+ </link>
+
+ <link name="ir_right">
+ <visual>
+ <geometry>
+ <box size="0.015 0.015 0.046"/>
+ </geometry>
+ <origin xyz="${-0.015/2} 0 0" rpy="0 0 0"/>
+ <material name="black">
+ <color rgba="0 0 0 1"/>
+ </material>
+ </visual>
+ </link>
+