URDF Importer - Visual primitives are created as debug components.

[michalpelka]

Let's take simple URDF, it contains only one box. This box will be created as Box Shape with game view.
This approach has two major disadvantages:

• helpers needs to be visible to see importer link
• material cannot be attached
• it is expensive to draw

<?xml version="1.0"?>
<robot name="urdf_test">
   <material name="lightgrey">
       <color rgba="0.8 0.8 0.8 1.0"/>
   </material>
   <link name="box_link">
       <inertial>
       <origin xyz="0. 0. 0."/>
       <mass value="1."/>
       <inertia ixx="1." ixy="0." ixz="0." iyy="1." iyz="0." izz="1."/>
       </inertial>
       <visual>
           <origin rpy="0 0 0" xyz="0 0 0"/>
           <geometry>
               <box size="1 2 1"/>
           </geometry>
       </visual>
       <material name="lightgrey"/>
   </link>
</robot>

Please use primitive from https://github.com/o3de/o3de/tree/development/Gems/PrimitiveAssets/Assets/Objects/_Primitives instead.