Ask Your Question
-2

std_msgs/ColorRGBA[].displaying different color for each point

asked 2011-03-05 10:03:46 -0600

closed gravatar image

updated 2014-01-28 17:09:17 -0600

ngrennan gravatar image

Hello sir,

I am trying to display different color for each point. I am able to display points with single color using:

             draw.color.b = 1.0;
             draw.color.a = 1.0;

but in am unable to display points with different colors. my lines of code is:

for(int i =0;i<=5;i++)

{

geometry_msgs::Point p;

     std_msgs::ColorRGBA c;
      p.x =i;
      p.y = 1;
      p.z = 1;
             c.r = 1;
             c.g = 1;
             c.b=1;
      draw.points.push_back(p);
      draw.colors.push_back(c);
}
marker_pub.publish(draw);

thanks for the help.

edit retag flag offensive close merge delete

Comments

Please update your question to say what you see on the screen and what you expect to see when you render.
tfoote gravatar imagetfoote ( 2011-03-05 13:02:42 -0600 )edit

1 Answer

Sort by ยป oldest newest most voted
2

answered 2011-03-07 04:54:22 -0600

hersh gravatar image

In the code you posted, the color is the same (white) for all the points: r=g=b=1. Maybe you meant to have something like: c.r = 0; c.g = 0; c.b = float(i)/5; Which would give you a spread from black to blue.

edit flag offensive delete link more

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

Question Tools

Stats

Asked: 2011-03-05 10:03:46 -0600

Seen: 988 times

Last updated: Jul 03 '11