RectangleMobility Class Reference

#include <RectangleMobility.h>

Inheritance diagram for RectangleMobility:

List of all members.

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Detailed Description

Rectangle movement model. See NED file for more info.

Author:

Andras Varga

Protected Member Functions
virtual void	initialize (int)
	Initializes mobility model parameters.
virtual void	handleSelfMsg (cMessage *msg)
	Called upon arrival of a self messages.
void	move ()
	Move the host.
void	calculateXY ()
	Maps d to (x,y) coordinates.
Protected Attributes
double	x1
double	y1
double	x2
double	y2
	rectangle bounds
double	speed
	speed of the host
double	updateInterval
	time interval to update the hosts position
bool	stationary
	if true, the host doesn't move
double	d
	distance from (x1,y1), measured clockwise on the perimeter
double	corner1
double	corner2
double	corner3
double	corner4

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Member Function Documentation

void RectangleMobility::calculateXY (   )  [protected]

Maps d to (x,y) coordinates. { if (d < corner1) { // top side pos.x = x1 + d; pos.y = y1; } else if (d < corner2) { // right side pos.x = x2; pos.y = y1 + d - corner1; } else if (d < corner3) { // bottom side pos.x = x2 - d + corner2; pos.y = y2; } else { // left side pos.x = x1; pos.y = y2 - d + corner3; } }

void RectangleMobility::handleSelfMsg (  cMessage *  msg  )  [protected, virtual]

Called upon arrival of a self messages. The only self message possible is to indicate a new movement. If host is stationary this function is never called. Reimplemented from BasicMobility. { move(); updatePosition(); scheduleAt(simTime() + updateInterval, msg); }

void RectangleMobility::initialize (  int  stage  )  [protected, virtual]

Initializes mobility model parameters. Reads the parameters. If the host is not stationary it calculates a random position and schedules a timer to trigger the first movement Reimplemented from BasicMobility. { BasicMobility::initialize(stage); EV << "initializing RectangleMobility stage " << stage << endl; if (stage == 1) { x1 = par("x1"); y1 = par("y1"); x2 = par("x2"); y2 = par("y2"); updateInterval = par("updateInterval"); speed = par("speed"); // if the initial speed is lower than 0, the node is stationary stationary = (speed == 0); // calculate helper vars double dx = x2-x1; double dy = y2-y1; corner1 = dx; corner2 = corner1 + dy; corner3 = corner2 + dx; corner4 = corner3 + dy; // determine start position double startPos = par("startPos"); startPos = fmod(startPos,4); if (startPos<1) d = startPos*dx; // top side else if (startPos<2) d = corner1 + (startPos-1)*dy; // right side else if (startPos<3) d = corner2 + (startPos-2)*dx; // bottom side else d = corner3 + (startPos-3)*dy; // left side calculateXY(); WATCH(d); updatePosition(); // host moves the first time after some random delay to avoid synchronized movements if (!stationary) scheduleAt(simTime() + uniform(0, updateInterval), new cMessage("move")); } }

void RectangleMobility::move (   )  [protected]

Move the host. { d += speed * updateInterval; while (d<0) d+=corner4; while (d>=corner4) d-=corner4; calculateXY(); EV << " xpos= " << pos.x << " ypos=" << pos.y << " speed=" << speed << endl; }

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Member Data Documentation

double RectangleMobility::corner1 [protected]

double RectangleMobility::corner2 [protected]

double RectangleMobility::corner3 [protected]

double RectangleMobility::corner4 [protected]

double RectangleMobility::d [protected]

distance from (x1,y1), measured clockwise on the perimeter

double RectangleMobility::speed [protected]

speed of the host

bool RectangleMobility::stationary [protected]

if true, the host doesn't move

double RectangleMobility::updateInterval [protected]

time interval to update the hosts position

double RectangleMobility::x1 [protected]

double RectangleMobility::x2 [protected]

double RectangleMobility::y1 [protected]

double RectangleMobility::y2 [protected]

rectangle bounds

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The documentation for this class was generated from the following files:

• RectangleMobility.h
• RectangleMobility.cc

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