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ROS与javascript入门教程-ros3djs-可视化Map

ROS与javascript入门教程-ros3djs-可视化Map

说明:

  • 介绍如何通过ros3djs可视化Map

github

步骤:

  • 新建map.html

  • 代码如下:

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />

<script type="text/javascript" src="http://cdn.robotwebtools.org/threejs/current/three.min.js"></script>
<script type="text/javascript" src="http://cdn.robotwebtools.org/EventEmitter2/current/eventemitter2.min.js"></script>
<script type="text/javascript" src="http://cdn.robotwebtools.org/roslibjs/current/roslib.min.js"></script>
<script type="text/javascript" src="http://cdn.robotwebtools.org/ros3djs/current/ros3d.min.js"></script>

<script type="text/javascript" type="text/javascript">
  /**
   * Setup all visualization elements when the page is loaded.
   */
  function init() {
    // Connect to ROS.
    var ros = new ROSLIB.Ros({
      url : 'ws://localhost:9090'
    });

    // Create the main viewer.
    var viewer = new ROS3D.Viewer({
      divID : 'map',
      width : 800,
      height : 600,
      antialias : true
    });

    // Setup the map client.
    var gridClient = new ROS3D.OccupancyGridClient({
      ros : ros,
      rootObject : viewer.scene
    });
  }
</script>
</head>

<body onload="init()">
  <h1>Simple Map Example</h1>
  <div id="map"></div>
</body>
</html>

代码解析:

  • 代码段:
var viewer = new ROS3D.Viewer({
  divID : 'map',
  width : 800,
  height : 600,
  antialias : true
});
  • 解释:创建ROS3D.Viewer对象,用于视图放置

  • 代码段:

var gridClient = new ROS3D.OccupancyGridClient({
  ros : ros,
  rootObject : viewer.scene
});
  • 解释:创建ROS3D.OccupancyGridClient对象,用于保存场景

运行:

  • 需要 map_server, rail_maps, and rosbridge_server包

  • 服务器,新终端, 运行

rosrun map_server map_server /opt/ros/groovy/share/rail_maps/maps/ilab.pgm 0.05
  • 服务器,新终端, 运行
roslaunch rosbridge_server rosbridge_websocket.launch
  • 浏览器运行map.html

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标签: ros与javascript入门教程