GetBoundingBox() values not changing after scale in gazebo (using : visual_plugin) [closed]

asked 2018-03-27 10:39:16 -0600

updated 2018-03-27 16:18:27 -0600

Gazebo ver: 7.0, ROS : Kinetic

Asked in Gazebo forum :


I am using a visual_plugin to get the box corner points, so later while scaling the object to change the color. I run this plugin inside the box model from the sdf file.

Everything loads good, the box points in the beginning are ok, same as defined in sdf, but if I scale the box (Inside Gazebo), the points when I printout > box_points_, remain the same but if I check in Gazebo into the properties of the box, the points are updated. How can I get the boundingbox to update the points in the plugin as I scale.


<?xml version="1.0"?>
<sdf version="1.6">
  <world name='default'>   
    <model name="TheBox">  
    <pose frame=''>30 13.9 3.05 0 0 0.012944</pose>

    <link name="TheBox">
        <visual name="visual">
            <size>18 2.9 6</size>
            <ambient>1 0 0 1</ambient>
            <diffuse>1 0 0 1</diffuse>
            <specular>0.1 0.1 0.1 1</specular>
            <emissive>0 0 0 0</emissive>

        <plugin name="BoxManipulator" filename=""/>



#include "BoxManipulator.h"

void BoxManipulator::Load(gazebo::rendering::VisualPtr _parent, sdf::ElementPtr _sdf) {

    // Store the pointer to the model
    this->world_ = _parent;

    this->scene_ =  gazebo::rendering::get_scene();
    this->box_ = this->scene_->GetVisual("TheBox");

    // Listen to the update event. This event is broadcast every simulation iteration.
    this->update_connection_ = gazebo::event::Events::ConnectPreRender(std::bind(&BoxManipulator::OnUpdate, this));

  // Called by the world update start event
  void BoxManipulator::OnUpdate() {

    // Box model
    gazebo::math::Vector3 box_origin_ = this->box_->GetWorldPose().pos;
    gazebo::math::Quaternion box_orientation_ = this->box_->GetWorldPose().rot;

    //Update the points

    //Printout the points
    for (int i = 0; i < box_points_.size(); i++) {
      std::cout << "Box corner points  : [" << i << "] - " << box_points_[i] << std::endl;

    std::cout << std::endl;


    // //Later So I can change the color of the box, in different scales

    //     ROS_INFO("Box smaller than 1^3");
    //     red_ = 1; green_ = 0;
    //     gazebo::common::Color _color(red_, green_, blue_, alpha_);

    //     this->world_->SetAmbient(_color);
    //     this->world_->SetDiffuse(_color);


  bool BoxManipulator::getBoxPoints(void){
    gazebo::math::Vector3 _buff; box_points_.reserve(8);

    _buff.x = this->box_->GetBoundingBox().min.x; _buff.y = this->box_->GetBoundingBox().min.y; _buff.z = this->box_->GetBoundingBox().min.z;
    _buff.x = this->box_->GetBoundingBox().min.x; _buff.y = this->box_->GetBoundingBox().max.y; _buff.z = this->box_->GetBoundingBox().min.z;
    _buff.x = this->box_->GetBoundingBox().min.x; _buff.y = this->box_->GetBoundingBox().max.y; _buff.z = this->box_->GetBoundingBox().max.z;
    _buff.x = this->box_->GetBoundingBox().min.x; _buff.y = this->box_->GetBoundingBox().min.y; _buff.z = this->box_->GetBoundingBox().max.z;

    _buff.x = this->box_->GetBoundingBox().max.x; _buff.y = this->box_->GetBoundingBox().min.y; _buff.z = this->box_->GetBoundingBox().min.z;
    _buff.x = this->box_->GetBoundingBox().max.x; _buff ...
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Closed for the following reason Gazebo Question: The Gazebo community prefers to answer questions at: by gvdhoorn
close date 2018-03-27 10:50:04.607198


I'm sorry, but this is a Gazebo question. Please ask those over at This site is for ROS only.

gvdhoorn gravatar image gvdhoorn  ( 2018-03-27 10:50:28 -0600 )edit

If you do post on Gazebo Answers, please post a link here to your question there, so we keep things connected.


gvdhoorn gravatar image gvdhoorn  ( 2018-03-27 10:50:47 -0600 )edit

Oh, ok thanks. I edited my question, added the link.

JimmyHalimi gravatar image JimmyHalimi  ( 2018-03-27 16:19:03 -0600 )edit