/**
* \brief With the agent move calculated, apply this movement, taking care to respect boundary
* conditions
*
* <p>With the agent move calculated, apply this movement, taking care to respect boundary
* conditions
*/
public double move() {
if (!_movement.isValid()) {
LogFile.writeLog("Incorrect movement coordinates");
_movement.reset();
}
if (!_agentGrid.is3D && _movement.z != 0) {
_movement.z = 0;
_movement.reset();
LogFile.writeLog("Try to move in z direction !");
}
// No movement planned, finish here
if (_movement.isZero()) return 0;
// Test the boundaries
checkBoundaries();
// Now apply the movement
_location.set(_newLoc);
_agentGrid.registerMove(this);
double delta = _movement.norm();
_movement.reset();
return delta / _totalRadius;
}
/**
* \brief Update the radius of the agent from the current mass (and then the volume) of the agent
* (EPS included)
*
* <p>Update the radius of the agent from the current mass (and then the volume) of the agent (EPS
* included)
*/
public void updateSize() {
// Update the totalMass field (sum of the particles masses)
updateMass();
if (_totalMass < 0)
LogFile.writeLog("Warning: negative mass on agent " + _family + ", " + _genealogy);
// Sum of (particles masses / particles density)
updateVolume();
// Compute radius according to the volume
updateRadius();
// sonia:chemostat
if (Simulator.isChemostat) {
// don't do the update of attachment/detachment
} else {
// Check if by chance the agent is close enough to a support to be
// attached
updateAttachment();
}
}
/**
* \brief Create a new agent in a specified position
*
* <p>Create a new agent in a specified position
*
* @param position Vector stating where this agent should be located
*/
public void createNewAgent(ContinuousVector position) {
try {
// Get a clone of the progenitor
LocatedAgent baby = (LocatedAgent) sendNewAgent();
baby.giveName();
// randomize its mass
baby.mutatePop();
baby.updateSize();
this._myDivRadius = getDivRadius();
baby._myDivRadius = getDivRadius();
baby._myDeathRadius = getDeathRadius();
// Just to avoid to be in the carrier
position.x += this._totalRadius;
baby.setLocation(position);
baby.registerBirth();
} catch (CloneNotSupportedException e) {
utils.LogFile.writeLog("Error met in LocAgent:createNewAgent()");
}
}
/**
* \brief Used in 'one-time' attachment scenarios, where clones of the progenitor are created in
* the birth area of the substratum.
*
* @param spRoot The XML mark-up group for a particular species being created.
*/
public void createPop(XMLParser spRoot) {
int howMany = spRoot.getAttributeInt("number");
if (howMany <= 0) return;
// Define the birth area - this is taken from the coordinates tags in the protocol file
// (Nov13) OR if an initial area is not declared, this is the whole Y and Z of the domain with a
// height of 1.
ContinuousVector[] _initArea = defineSquareArea(spRoot);
// Create all the required agents
ContinuousVector cc = new ContinuousVector();
for (int i = 0; i < howMany; i++)
if (_progenitor instanceof LocatedAgent) {
// Set coordinates within the birth area - randomly
if (!Simulator.isChemostat) shuffleCoordinates(cc, _initArea);
// Create the agent at these coordinates
((LocatedAgent) _progenitor).createNewAgent(cc);
} else _progenitor.createNewAgent();
LogFile.writeLog(
howMany
+ " agents of species "
+ speciesName
+ " for one-time attachment successfully created");
}
/**
* \brief Captures cell division by making a clone of this agent using the makeKid method
*
* <p>Captures cell division by making a clone of this agent using the makeKid method
*/
public void divide() {
try {
// Create a daughter cell
makeKid();
} catch (CloneNotSupportedException e) {
LogFile.writeLog("Error met in LocatedAgent.divide()");
}
}
/**
* \brief For self-attachment scenarios, initialises agents on the boundary layer rather than
* substrarum, and models their swim to the surface or biofilm
*
* <p>For self-attachment scenarios, the agents are initialised at the top of the boundary layer
* rather than on the substratum. These agents then perform a 'run and tumble' motion until they
* either attach to the substratum or forming biofilm. This method captures this behaviour for
* cells that are created for a time step. Once this swimming action has been performed, the agent
* is created at its final position. Note that input of agents onto the boundary layer is decided
* by a parameter set in the protocol file, cellAttachmentFrequency, measured in hours. The number
* of cells is adjusted to suit the global time step that is being used. Also note that this
* injection of cells can be for a set period (specified in the protocol file as parameter
* cellInjectionPeriod), or can be stopped and started (modelling a 'settling' period) using
* parameters cellInjectionOffPeriod and cellInjectionStopHour. This is explained in detail in the
* tutorial for version 1.2 of iDynoMiCS.
*
* @param spRoot The Species markup from the protocol file for one particular species being
* initialised
* @param numberAttachedInjectedAgents The number of agents of this type that need to be created
* in this global timestep
*/
public void createBoundaryLayerPop(XMLParser spRoot, int numberAttachedInjectedAgents) {
LogFile.writeLog(
"\t\tAttempting to create "
+ numberAttachedInjectedAgents
+ " agents of "
+ speciesName
+ " in the boundary layer");
// Create all the required agents
// Note that this continues UNTIL THE DESIRED NUMBER OF CELLS HAVE ATTACHED SOMEWHERE
// Just out of interest, I've decided to keep a count of how many cells are required for this to
// happen
int totalNumberOfInjectedAgents = 0;
int agentsReturnedToBulk = 0;
int requiredNumAttachedAgents = numberAttachedInjectedAgents;
// Temporary DiscreteVector to make finding the boundary layer tidier.
DiscreteVector dV = new DiscreteVector();
while (numberAttachedInjectedAgents > 0) {
totalNumberOfInjectedAgents++;
if (_progenitor instanceof LocatedAgent) {
swimmingAgentPosition.reset();
// Now to choose coordinates for this particular agent
while (true) {
// This cell needs to take a random location in the Z and Y
// directions. The X will come from the position of the
// boundary layer on those axes. Generate these randomly.
swimmingAgentPosition.y = ExtraMath.getUniRandDbl() * domain.length_Y;
if (domain.is3D) {
swimmingAgentPosition.z = ExtraMath.getUniRandDbl() * domain.length_Z;
}
// Now to work out the X coordinate. This is based on where
// the top of the boundary layer is when this agent is
// created. The top of the boundary layer is calculated in
// Domain at each step. Now the resolution differs (this is
// in nI x nJ x nK rather than microns - so this will need
// to be converted accordingly. Method to calculate this:
// - get the value from the top of the boundary layer
// - reduce by 1 (such that the micron value will be the
// top of the layer)
// - multiply by resolution of this domain.
dV.set(swimmingAgentPosition, domain._resolution);
if (!domain.is3D) dV.k = 1;
swimmingAgentPosition.x = domain._topOfBoundaryLayer[dV.j][dV.k] - 1.0;
swimmingAgentPosition.x *= domain._resolution;
// Check this is ok.
// System.out.println("Trying starting position "+dV.toString()+" =>
// "+this.swimmingAgentPosition.toString());
if (domain.testCrossedBoundary(swimmingAgentPosition) == null) break;
}
// Now we can do the run and tumble motion of these cells
int cellRunResult = performRunAndTumble(spRoot);
// If increment the relevant counters, as these may be useful
switch (cellRunResult) {
case 1: // Successfully Attached
numberAttachedInjectedAgents--;
// Create the agent at these coordinates
((LocatedAgent) _progenitor).createNewAgent(this.swimmingAgentPosition);
// System.out.println("Cell "+swimmingAgentPosition.toString()+" attached");
break;
case 2:
// System.out.println("Cell at "+swimmingAgentPosition.toString()+" returned to bulk");
agentsReturnedToBulk++;
break;
}
} else {
// If this isn't a located species, just create a new agent.
_progenitor.createNewAgent();
}
}
// Write the stats to the log file incase of interest
LogFile.writeLog(
requiredNumAttachedAgents
+ " agents of species "
+ speciesName
+ " for self-attachment successfully created");
LogFile.writeLog(
totalNumberOfInjectedAgents + " agents of species " + speciesName + " attempted to attach");
LogFile.writeLog(
agentsReturnedToBulk + " agents of species " + speciesName + " returned to the bulk");
}