NetAnim boundaries

[Konstantinos]

Hi,

I want to use a mobility model developed by KIT (http://dsn.tm.kit.edu/english/vtl.php) 

I have successfully ported the model but I am having difficulties with NetAmin, and that's due to a characteristic of the new module.

All nodes are created at the start of simulation t=0, but they are placed very far away until it is time to enter the 'reference area'

See this code snippet

inline Vector
IntelligentDriverMobilityModel::DoGetPosition (void) const
{
 if (m_end)
 return Vector(IDM_INVALID_POS, IDM_INVALID_POS, IDM_INVALID_POS);
....

where IDM_INVALID_POS = 99999;

and the reference area is a ManhattanGrid with 500x500.

So you can understand that NetAnim's boundaries automatically become (99999x99999) and I can not see the reference area I am interested.

Would the AnimationInterface::SetBoundary(0,0, 500,500) be enough or would it cause error because the nodes will be outside the boundary?

Regards,

K.

[John Abraham]

hmm,

I don't think it should error out, based on when I tested it last.

But now that I think about it, I have removed this feature in 3.105 until I finish a general cleanup of AnimationInterface. The only workaround is to possibly create AnimationInterface just before nodes come into the reference area.

-john

[John Abraham]

1. SetBoundary does nothing useful on ns-3-dev for the time-being. The last time it was possibly effectual was on ns-3.19.

2.  If you are using 3.105 then the only other way is to hard-code this in the animator.

void

AnimatorScene::setSimulationBoundaries (QPointF minPoint, QPointF maxPoint)

{

.... 

  m_sceneMinPoint = QPointF(0, 0);   <<< add this

  m_sceneMaxPoint = QPointF(50, 50);   <<< add this

  setSceneRect (QRectF (m_sceneMinPoint, m_sceneMaxPoint));

}

On Wed, Apr 23, 2014 at 5:21 AM, Konstantinos <dinos.k...@gmail.com> wrote:

The thing is that they do not come at the same time. 

See it as a pool of nodes located far away, and nodes enter the reference area with certain rate. When they leave the area (e.g. travel the 500m) they are moved back in that "invalid" position.

I haven't tested it yet, I was just looking at the API. This method (SetBoundary) still exists in ns-3-dev @ 88c653a2840a

http://www.nsnam.org/doxygen/classns3_1_1_animation_interface.html#ac708d3c240414012bab20694d4e468ff

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[Konstantinos]

The thing is that they do not come at the same time. 

See it as a pool of nodes located far away, and nodes enter the reference area with certain rate. When they leave the area (e.g. travel the 500m) they are moved back in that "invalid" position.

I haven't tested it yet, I was just looking at the API. This method (SetBoundary) still exists in ns-3-dev @ 88c653a2840a

http://www.nsnam.org/doxygen/classns3_1_1_animation_interface.html#ac708d3c240414012bab20694d4e468ff

On Wednesday, April 23, 2014 12:57:31 PM UTC+1, John Abraham wrote:

[Bhooshi Sandeep]

Hi John,
I changed the m_sceneMinPoint = QPointF(0,0) & m_sceneMaxPoint(1500,300) to change the boundaries of my simulation area. I'm running the simulation in a 1500 x 300 area using Steady State Random Waypoint mobility model but when I look at the xml file in NetAnim I see a shrinkage in the area. I could see the nodes placed in a area of 1457 x 298.9. Or at least that's what the boundaries of my grid are. Can I know why?

Thank you.