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how to visualize quadrangle in rviz

asked 2012-03-12 15:54:49 -0500

clark gravatar image

I am looking for a proper way to visualize quadrangles in rviz. The quadrangles are from a dynamically updated map representing a terrain environment.

The closest display type I can find in rviz is the 2d map, but it is limited to 2d flat ground while in my case the elevation of cells has to be considered; another close approach is to visualize the vertexes of quadrangle, but no color filling of the quadrangles can be achieved.

thanks for any advices clark

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answered 2012-03-13 07:04:57 -0500

dornhege gravatar image

The best way is probably to manually generate triangles for a visualization_msgs/Marker.

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Agree, I think this a way worth trying. Thanks.

clark gravatar image clark  ( 2012-03-13 19:05:02 -0500 )edit
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answered 2012-03-13 09:26:16 -0500

mjcarroll gravatar image

You can also use the Polygon DisplayType.

It accepts a PolygonStamped message and displays it in rviz for you.

I have used this before to demonstrate a boundary of a field. This will not fill in the polygon for you, though.

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noted. the limit is that no fill for the polygon is provided.

clark gravatar image clark  ( 2012-03-13 17:38:25 -0500 )edit

I think that if you want fill, then Marker is the way to go. You could "triangulate" your polygon, which is commonly done in computer graphics.

mjcarroll gravatar image mjcarroll  ( 2012-03-13 18:18:28 -0500 )edit

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Asked: 2012-03-12 15:54:49 -0500

Seen: 650 times

Last updated: Mar 13 '12