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  4. How to replace default point shape in PCLVisualizer to other shape?

How to replace default point shape in PCLVisualizer to other shape?

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  • N Offline
    N Offline
    npatil15
    wrote on 3 Oct 2019, 09:20 last edited by
    #1

    Hello All,

    I'm drawing the point cloud data using this library, http://docs.pointclouds.org/1.8.1/cl...isualizer.html

    Now I can see point cloud data (In terms of points) on the widgets, but I want to replace all points with another shape (like cross and circle).

    I know we can add shapes (line, sphere, arrow, polygon) to widgets, but I don't want to add, I just want to replace all point to a particular shape.

    So if anyone has done this or has an idea please suggest me.

    Thanks in advance!

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    • S Offline
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      SGaist
      Lifetime Qt Champion
      wrote on 3 Oct 2019, 19:51 last edited by
      #2

      Hi,

      What are you doing with theses widgets ?

      Interested in AI ? www.idiap.ch
      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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      • N Offline
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        npatil15
        wrote on 4 Oct 2019, 04:48 last edited by
        #3

        I'm displaying radar point cloud data on widgets. Now I can see all the points, but if I connect multiple radar PCD input then the user should have the option to distinguish the data from other PCD data. So for my concern, I want to add some shapes like circles or cross instead of points.

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        • S Offline
          S Offline
          SGaist
          Lifetime Qt Champion
          wrote on 5 Oct 2019, 19:12 last edited by
          #4

          What are you using to render your points ?

          Interested in AI ? www.idiap.ch
          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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          • N Offline
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            npatil15
            wrote on 9 Oct 2019, 06:37 last edited by npatil15 10 Sept 2019, 06:38
            #5

            Somehow I have added shapes as,
            For Cross:

                pcl::PointXYZ point2(points.x()+2, points.y()+2, points.z());
                pclVisualizer.addLine(point1, point2, id);
            
                pcl::PointXYZ point3(points.x()+2, points.y()-2, points.z());
                pcl::PointXYZ point4(points.x()-2, points.y()+2, points.z());
                pclVisualizer.addLine(point3, point4, id1);
            

            For Circle:

                pcl::ModelCoefficients circle_coeff;
                circle_coeff.values.resize (3);    // We need 3 values
                circle_coeff.values[0] = points.x();
                circle_coeff.values[1] = points.y();
                circle_coeff.values[2] = 1;
                pclVisualizer.addCircle(circle_coeff, id);
            

            Now I can see cross and circle, but the circle is not so clear so far, How I can make it clear or increase its width?
            Thanks

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            1/5

            3 Oct 2019, 09:20

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