Mesh is invisible, but I can see it as a collision. DAE model

asked 2017-06-01 16:34:02 -0500

michael1234
5 ●9 ●10 ●12

updated 2017-06-01 16:38:00 -0500

I am importing a mesh and render it with this code:

     <visual name="top_visual">
      <transparency>0</transparency>
      <pose>0 0 -0.0376785 0 0 1.5707</pose>
      <geometry>
        <mesh>
          <uri>model://velodyne_hdl32/meshes/velodyne_top.dae</uri>
        </mesh>
      </geometry>
    </visual>

It's there but invisible: image description

It's weird, because you can actually see it with view collisions on. image description

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How are you getting the mesh? Have you tried this one: https://bitbucket.org/osrf/gazebo_models/src/605a402bd4c23232002b4a2ba7113ae885051bbe/velodyne_hdl32/meshes/velodyne_top.dae?at=default&fileviewer=file-view-default

chapulina ( 2017-11-25 22:29:18 -0500 )edit

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answered 2017-11-27 04:09:01 -0500

Brosseau.F

284 ●12 ●18 ●21

updated 2017-11-30 08:41:09 -0500

Sometimes object exported from blender are not visible (or some of their faces).

To see if the problem is due to that, you can place the camera inside the model (in Gazebo). Once you are inside, if you see the faces, you have to flip normal's direction.

In Blender

Select your model
Switch to edit mode
Select the faces that you want to flip normal's direction
In the Shading/UVs panel, select the "flip direction" button

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answered 2017-11-23 12:42:51 -0500

dafred94
1 ●1 ●1 ●2

Highly interesting that it's working and being displayed as a collision model! I think that I'm having the same problem and may have found a workaround: export to .obj or .stl instead of .dae .

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Mesh is invisible, but I can see it as a collision. DAE model

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