send_grid_cells_node.cpp
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1 /*
2  * Copyright (c) 2011, Willow Garage, Inc.
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29 
30 #include "ros/ros.h"
31 #include "nav_msgs/GridCells.h"
32 #include "math.h"
33 
34 int main( int argc, char **argv )
35 {
36  ros::init( argc, argv, "send_grid_cells" );
37 
38  ros::NodeHandle nh;
39 
40  ros::Publisher pub = nh.advertise<nav_msgs::GridCells>("grid_cells", 100);
41  ros::Rate loop_rate( 100 );
42 
43  nav_msgs::GridCells msg;
44  int width = 500;
45  int length = 500;
46  msg.cells.resize( width * length );
47  msg.header.frame_id = "base_link";
48  msg.cell_width = .01;
49  msg.cell_height = .01;
50 
51  int count = 0;
52  while( ros::ok() )
53  {
54  for( int x = 0; x < width; x++ )
55  {
56  for( int y = 0; y < length; y++ )
57  {
58  geometry_msgs::Point & point = msg.cells[ x + y * width ];
59  point.x = x / 100.0;
60  point.y = y / 100.0;
61  point.z = sin( x / 100.0 + y / 100.0 + count / 100.0 );
62 // point.z = ((x + y + count) % 100) / 100.0;
63  }
64  }
65  msg.header.seq = count;
66  msg.header.stamp = ros::Time::now();
67 
68  pub.publish( msg );
69 
70  ros::spinOnce();
71  loop_rate.sleep();
72  ++count;
73  }
74 }
void publish(const boost::shared_ptr< M > &message) const
ROSCPP_DECL void init(int &argc, char **argv, const std::string &name, uint32_t options=0)
TFSIMD_FORCE_INLINE const tfScalar & y() const
int main(int argc, char **argv)
ROSCPP_DECL bool ok()
TFSIMD_FORCE_INLINE const tfScalar & x() const
Publisher advertise(const std::string &topic, uint32_t queue_size, bool latch=false)
static Time now()
TFSIMD_FORCE_INLINE tfScalar length(const Quaternion &q)
ROSCPP_DECL void spinOnce()


rviz
Author(s): Dave Hershberger, David Gossow, Josh Faust
autogenerated on Wed Aug 28 2019 04:01:51