Hello,
I am trying to make a part of my URDF model semi transparent since the part is a clear 12" acrylic plate. So I tried making the plate a flat cylinder with a light grey color and alpha set to 0.1 as shown below. However, the plate looks solid grey in RViz--the same as if I had set alpha to 1.0. I can make the whole robot more or less transparent by changing the alpha property for the Robot Model display. However, I want just the plate to be transparent. Below is a test URDF file that illustrates the problem. I am trying this using the latest Electric debian packages under Ubuntu 10.04.
<?xml version="1.0"?>
<!-- XML namespaces -->
<robot xmlns:sensor="http://playerstage.sourceforge.net/gazebo/xmlschema/#sensor"
xmlns:controller="http://playerstage.sourceforge.net/gazebo/xmlschema/#controller"
xmlns:interface="http://playerstage.sourceforge.net/gazebo/xmlschema/#interface"
xmlns:xacro="http://ros.org/wiki/xacro"
name="test_urdf">
<link name="base_link">
<visual>
<origin xyz="0 0 0" rpy="0 0 0" />
<geometry>
<cylinder length="0.005" radius="0.15" />
</geometry>
<material name="clear_color">
<color rgba="0.5 0.5 0.5 0.1"/>
</material>
</visual>
</link>
</robot>
Originally posted by Pi Robot on ROS Answers with karma: 4046 on 2011-08-09
Post score: 2
Original comments
Comment by Nick Armstrong-Crews on 2011-08-26:
+1: I have seen the same problem in diamondback on Ubuntu 10.10