enable to write STL collision:

[k-okada]

support to write STL model for URDF collision element.

irteusgl `rospack find eusurdf`/euslisp/eusmodel_to_urdf.l $EUSDIR/models/room73a3-bariera-1400-middle-0-object.l `rospack find eusurdf`/models/room73a3-bariera-1400-middle-0/ /opt/ros/melodic/lib/collada_urdf_jsk_patch/collada_to_urdf --use-stl 

will produce

<?xml version="1.0"?>
<robot name="room73a3-bariera-1400-middle-0"
       xmlns:xi="http://www.w3.org/2001/XInclude">
  <gazebo>
    <static>false</static>
  </gazebo>
  <link name="nil_link">
    <visual>
      <origin xyz="0 0 0" rpy="0 -0 0"/>
      <geometry>
        <mesh filename="model://room73a3-bariera-1400-middle-0/meshes/nil_link_mesh.dae" scale="1 1 1" />
      </geometry>
    </visual>
    <collision>
      <origin xyz="0 0 0" rpy="0 -0 0"/>
      <geometry>
        <mesh filename="model://room73a3-bariera-1400-middle-0/meshes/nil_link_mesh.stl" scale="1 1 1" />
      </geometry>
    </collision>
    <inertial>
      <mass value="0.001" />
      <origin xyz="0 0 0" rpy="0 -0 0"/>
      <inertia ixx="1e-03" ixy="0" ixz="0" iyy="1e-03" iyz="0" izz="1e-03"/>
    </inertial>
  </link>
  <gazebo reference="nil_link">
    <mu1>0.9</mu1>
    <mu2>0.9</mu2>
  </gazebo>
</robot>