The current NetworkModel, which must be bound to this environment. Assigning a new model publishes the neighborhood it provides for every node in the environment.

nodeCount

override val nodeCount: Observable<Int>

Returns an Observable view of the number of Nodes currently in the Environment.

nodes

open override val nodes: ObservableList<Node<T>>

An ordered Observable view of all the Nodes that exist in current Environment.

offset

override val offset: DoubleArray

This method allows to know which are the smallest coordinates represented. Return an array of length dimensions containing the smallest coordinates for each dimension.

openDoors

val openDoors: Boolean

origin

open override val origin: Euclidean2DPosition

Create a position corresponding to the origin of this environment.

position

open val Node<T>.position: Observable<Euclidean2DPosition>

The observable position of this node, see positionOf.

reactions

open override val reactions: ObservableList<Reaction<T>>

The reactions registered with this host, in registration order; ObservableList.current is a snapshot.

shapeFactory

open override val shapeFactory: Euclidean2DShapeFactory

A factory of shapes compatible with this environment.

simulation

override var simulation: Simulation<T, Euclidean2DPosition>

Return the current Simulation, if present, or throws an IllegalStateException otherwise.

simulationOrNull

override var simulationOrNull: Simulation<T, Euclidean2DPosition>?

Return the current Simulation, if present, or null otherwise.

size

override val size: DoubleArray

The size of the environment as an array of length getDimensions(). This method must return distance measured with the same unit used by the positions. No non-euclidean distance metrics are allowed.

sizeInDistanceUnits

open override val sizeInDistanceUnits: DoubleArray

Override this property if units measuring distance do not match with units used for coordinates. For instance, if your space is non-Euclidean, or if you are using polar coordinates. A notable example is using geographical latitude-longitude as y-x coordinates and meters as distance measure.

Functions

addLayer

open override fun addLayer(molecule: Molecule, layer: Layer<T, Euclidean2DPosition>)

Associates layer with molecule. Layers are part of the environment setup: association fails once the environment is attached to a simulation, and a molecule cannot be associated with more than one layer.

addNode

open override fun addNode(node: Node<T>, position: Euclidean2DPosition): Boolean

Adds a new node to this environment in a specific position. The environment is responsible for calling the right method of the simulation to ensure that the reaction is properly scheduled. The function returns true if the node is added to the environment.

addReaction

open override fun addReaction(reaction: Reaction<T>)

Registers reaction and notifies the running simulation when it was not already present. Fails if this is not the Reaction.host of reaction.

addTerminator

open fun addTerminator(terminator: (Environment<T, Euclidean2DPosition>) -> Boolean)

Add a terminator indicating whether the simulation should be considered finished. The simulation finishes as soon as any of the terminators is satisfied.

open override fun addTerminator(terminator: TerminationPredicate<T, Euclidean2DPosition>)

Adds to the simulation a predicate that determines whether a simulation should be terminated.

allShortestHopPaths

fun <T> Environment<T, *>.allShortestHopPaths(): SymmetricMatrix<Double>

Calculates the shortest paths using the Floyd-Warshall algorithm calculating the Hop Distance between nodes.

allSubNetworks

fun <T> Environment<T, *>.allSubNetworks(computeDistance: (Node<T>, Node<T>) -> Double = environmentMetricDistance()): Set<Network<T>>

Computes the diameter of all subnetworks in the environment. The diameter is the longest shortest path between any two nodes. Returns a Map containing the subnetwork related to each Node of the environment.

allSubNetworksByNode

fun <T> Environment<T, *>.allSubNetworksByNode(computeDistance: (Node<T>, Node<T>) -> Double = environmentMetricDistance()): Map<Node<T>, Network<T>>

Computes the diameter of all subnetworks in the environment. The diameter is the longest shortest path between any two nodes. Returns a Map mapping each node to the subnetwork it belongs to.

allSubNetworksByNodeWithHopDistance

fun <T> Environment<T, *>.allSubNetworksByNodeWithHopDistance(): Map<Node<T>, Network<T>>

Computes the diameter of all subnetworks in the environment. The diameter is the longest shortest path between any two nodes, evaluated using the allShortestHopPaths method. Returns a Set containing the subnetworks.

allSubNetworksWithHopDistance

fun <T> Environment<T, *>.allSubNetworksWithHopDistance(): Set<Network<T>>

contains

open operator override fun contains(node: Node<T>): Boolean

Whether node is part of this environment.

currentPositionOf

open override fun currentPositionOf(node: Node<T>): Euclidean2DPosition

Retrieves node's current position.

distanceBetween

open override fun distanceBetween(n1: Node<T>, n2: Node<T>): Double

Measures the distance between two nodes (n1, n2) in the environment.

distanceTo

open fun Node<T>.distanceTo(other: Node<T>): Double

The distance between this node and other, see distanceBetween.

farthestReachablePosition

open override fun farthestReachablePosition(node: Node<T>, desired: Euclidean2DPosition): Euclidean2DPosition

The farthest position reachable by the node towards the desired one, stopping at the walls of the halls.

getHeading

open override fun getHeading(node: Node<T>): Euclidean2DPosition

Gets the heading of a node as a direction vector.

getNodesWithin

open override fun getNodesWithin(shape: Euclidean2DShape): List<Node<T>>

Gets all nodes whose shape.intersect is true for the given shape.

getShape

open override fun getShape(node: Node<T>): Euclidean2DShape

Gets the shape of a node relatively to its position and heading in the environment.

isNetworkSegmented

fun <T> Environment<T, *>.isNetworkSegmented(): Boolean

Returns true the network is segmented, false otherwise.

layerFor

open override fun layerFor(molecule: Molecule): Layer<T, Euclidean2DPosition>?

Get the Layer associate to the given molecule. If no Layer is associated with the given molecule, return null.

makePosition

open fun makePosition(coordinates: DoubleArray): Euclidean2DPosition

open fun makePosition(coordinates: List<Number>): Euclidean2DPosition

Given the coordinates of the point, returns a Position compatible with this environment.

open fun makePosition(x: Double, y: Double): Euclidean2DPosition

open fun makePosition(x: Number, y: Number): Euclidean2DPosition

Creates a new Euclidean2DPosition.

open override fun makePosition(vararg coordinates: Number): Euclidean2DPosition

Creates an euclidean position from the given coordinates.

moveBy

open fun Node<T>.moveBy(displacement: Euclidean2DPosition)

Moves this node by displacement, relative to its current position, see moveNodeBy.

moveNodeBy

open fun moveNodeBy(node: Node<T>, displacement: Euclidean2DPosition)

Moves node by displacement, relative to its current position, through moveNodeTo. Environments constraining movements should override moveNodeTo rather than this function, so that their constraints apply to absolute movements as well.

moveNodeTo

open override fun moveNodeTo(node: Node<T>, position: Euclidean2DPosition)

Moves node to the farthestReachablePosition towards position, extending the environment to include it.

moveTo

open fun Node<T>.moveTo(position: Euclidean2DPosition)

Moves this node to position, see moveNodeTo.

neighborhoodOf

open override fun neighborhoodOf(node: Node<T>): Observable<Neighborhood<T>>

Given a node, this method returns an observable view of its neighborhood.

networkDiameter

fun Environment<*, *>.networkDiameter(): Double

Returns the diameter of the network in environment units if it is not segmented, and NaN otherwise.

networkDiameterByHopDistance

fun Environment<*, *>.networkDiameterByHopDistance(): Double

Returns the hop-distance diameter of the network if it is not segmented, and NaN otherwise.

fun <T> Environment<T, *>.networkDiameterByHopDistance(node: Node<T>): Double

Computes the network diameter of the segment containing node.

nodesAround

open override fun nodesAround(position: Euclidean2DPosition, range: Double): List<Node<T>>

Given a position this method returns a list of all the surrounding nodes within the given range. Note that this method (depending on the implementation) might be not optimized.

open override fun nodesAround(node: Node<T>, range: Double): List<Node<T>>

Given a node this method returns a list of all the surrounding nodes within the given range. Note that this method (depending on the implementation) might be not optimized, and it's consequently much better to use Environment.neighborhoodOf and filter the neighborhood if you are sure that all the nodes within the range are connected to the center.

nodesInRange

open fun Euclidean2DPosition.nodesInRange(range: Double): List<Node<T>>

The nodes within range of this position, see nodesAround.

open fun Node<T>.nodesInRange(range: Double): List<Node<T>>

The nodes within range of this node, see nodesAround.

nodeWithId

open override fun nodeWithId(id: Int): Node<T>

Allows accessing a Node in this Environment known its id. Depending on the implementation, this method may or may not be optimized (namely, id could run in constant or linear time with the number of nodes).

observeLayerValue

open override fun observeLayerValue(molecule: Molecule, node: Node<T>): Observable<T?>

Observes the value of the Layer associated with molecule at the position of node. The observable emits when node moves to a position where the value differs, and when the layer changes the value at the current position of node. Its value is null while no layer is associated with molecule, and it emits when one is: observables created during setup follow layers associated later.

observeNodesAround

open override fun observeNodesAround(position: Euclidean2DPosition, range: Double): ObservableSet<Node<T>>

open override fun observeNodesAround(node: Node<T>, range: Double): ObservableSet<Node<T>>

An Observable alternative to nodesAround.

observeNodesInRange

open fun Euclidean2DPosition.observeNodesInRange(range: Double): ObservableSet<Node<T>>

Observes the nodes within range of this position, see observeNodesAround.

open fun Node<T>.observeNodesInRange(range: Double): ObservableSet<Node<T>>

Observes the nodes within range of this node, see observeNodesAround.

positionOf

open override fun positionOf(node: Node<T>): Observable<Euclidean2DPosition>

Observe the position of a node.

remove

open fun Node<T>.remove()

Removes this node, see removeNode.

open fun Reaction<T>.remove()

Unregisters this reaction from its host, see removeReaction.

removeNode

open override fun removeNode(node: Node<T>)

Removes node. If node removal is unsupported, it does nothing.

removeReaction

open override fun removeReaction(reaction: Reaction<T>)

Unregisters reaction and notifies the running simulation when it was actually present.

setHeading

open override fun setHeading(node: Node<T>, direction: Euclidean2DPosition)

Sets the heading of a node.

shouldEqual

infix fun <T, P : Position<P>> Environment<T, P>.shouldEqual(other: Environment<T, P>)

subscriptionMonitor

fun <T, P : Position<out P>> Environment<T, P>.subscriptionMonitor(): EnvironmentSubscriptionMonitor<T, P>

Returns the EnvironmentSubscriptionMonitor of this Environment.

toEnvironmentSurrogate

fun <T, P : Position<out P>, TS : Any> Environment<T, P>.toEnvironmentSurrogate(toConcentrationSurrogate: (T) -> TS): EnvironmentSurrogate<TS, PositionSurrogate>

A function that maps an Environment to its surrogate class (EnvironmentSurrogate). Use the toSuitablePositionSurrogate strategy for PositionSurrogate mapping.

fun <T, P : Position<out P>, TS : Any, PS : PositionSurrogate> Environment<T, P>.toEnvironmentSurrogate(toConcentrationSurrogate: (T) -> TS, toPositionSurrogate: (P) -> PS): EnvironmentSurrogate<TS, PS>

A function that maps an Environment to its surrogate class (EnvironmentSurrogate).

toGraphQLEnvironmentSurrogate

fun <T, P : Position<out P>> Environment<T, P>.toGraphQLEnvironmentSurrogate(): EnvironmentSurrogate<T, P>

Converts an Environment to a EnvironmentSurrogate.

toPosition

open fun DoubleArray.toPosition(): Euclidean2DPosition

A position with these coordinates, see makePosition.

toString

open override fun toString(): String

Not used internally. Override as you please.