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Exporting model and textures from Blender

This is a similar question to http://answers.gazebosim.org/question/22437/the-question-is-regarding-collada-dae-file/

I have a 3d model of a plant image description

When I export it as a .dae from Blender it exports the file into multi parts

image description

When I add the plant to my URDF file:

<visual>
  <origin xyz='1.55 0 0' rpy='0 0 0' />
  <geometry>
    <mesh filename="package://lawn_tractor_sim/meshes/beet/beet.dae" scale='1 1 1'/>
  </geometry>
</visual>

It shows up grey in simulation and in RVIZ:

image description

Is there a tutorial on how to export a model from blender and get the textures to show up in gazebo?

When I try to export it as a .obj from Blender I get two files .mtl and .obj but not sure how to load them or where the textures are. The obj looks like a different approach. How are these images made and exported https://github.com/osrf/car_demo/blob/master/car_demo/models/mcity/materials/textures/RailroadGate.png

Thanks in advance,

Matt

Asked by ROSAgriculture on 2019-08-06 17:49:50 UTC

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Answers

Is there perhaps a reference in your DAE file to some JPG file? Is this JPG file present in the model folder under the file structure materials/textures/?

The structure of a model folder for models with mesh geometry given by DAE file should be

.
├── materials
│   └── textures
│       └── model_name.jpg
├── meshes
│   └── model_name.dae
├── model.config
└── model.sdf

Asked by kumpakri on 2019-08-13 08:09:28 UTC

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When you export as a collada (dae) file from Blender, you should see an option on the left to import textures as well, it's quite easy to miss it.

C:\fakepath\Screenshot from 2019-08-14 15-12-22.png

Asked by rmv24 on 2019-08-14 15:08:55 UTC

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I know this is an old question but I see no answers yet.

This might be about enabling the texture when you export .dae file. I have exported AR-tag which I used a simple square plate and the AR-tag image as a texture. It is much more simplistic than your model but I guess the process is the same and I am able to see the texture in Gazebo. This tutorial might help.

Asked by TheClem on 2021-10-26 03:48:56 UTC

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