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gs-boids
Commit c526c2c0 authored by Ant01n3's avatar Ant01n3
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Added more javadoc.

parent bb6a8a08
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Showing with 187 additions and 63 deletions
src/org/graphstream/boids/Boid.java
View file @ c526c2c0
......@@ -44,11 +44,20 @@ import org.miv.pherd.geom.Vector3;
* Represents a single bird-oid object.
*
* <p>
* A boid is both a particle in the force system used to compute the position and motion
* A boid is both a particle in the forces system used to compute the position and motion
* of the object, and a GraphStream node. This allows to consider a graph made of
* all the boids.
* </p>
*
* <p>
* The boid is in fact split in two parts, the {@link Boid} class itself and the
* {@link BoidParticle} inner class that represents the boid in the forces system. The
* boid particle in turn contains a {@link Forces} object that represents all the forces
* exercising on the boid. Globally, the {@link Boid} class acts on the graph and updates
* its position, creating links toward other boids/nodes that it sees, whereas the
* {@link BoidParticle} and the {@link Forces} are used to compute the boid position.
* </p>
*
* @author Guilhelm Savin
* @author Antoine Dutot
*/
......@@ -188,18 +197,15 @@ public class Boid extends AdjacencyListNode {
/** Direction of the boid. */
protected Vector3 dir;
/** Set of gloval parameters. */
/** Set of global parameters. */
protected Context ctx;
/** Number of boids in view at each step. */
protected int contacts = 0;
/** Nimber of boids of my group in view at each step. */
/** Number of boids of my group in view at each step. */
protected int mySpeciesContacts = 0;
/** ?? */
protected float energy = 0;
/**
* New particle.
* @param ctx The set of global parameters.
......@@ -248,22 +254,17 @@ public class Boid extends AdjacencyListNode {
checkWalls();
nextPos.move(dir);
// setAttribute("xyz", pos.x, pos.y, pos.z);
Boid.this.setAttribute("x", pos.x);
Boid.this.setAttribute("y", pos.y);
Boid.this.setAttribute("z", pos.z);
Boid.this.setAttribute("xyz", pos.x, pos.y, pos.z);
moved = true;
}
@Override
public void inserted() {
}
@Override
public void removed() {
}
public Boid getBoid() {
......@@ -310,4 +311,4 @@ public class Boid extends AdjacencyListNode {
}
}
}
}
}
\ No newline at end of file
src/org/graphstream/boids/BoidCellData.java
View file @ c526c2c0
......@@ -15,11 +15,11 @@ import org.miv.pherd.ntree.NTreeListener;
* box.
*
* XXX TODO there are bugs here, verify this code and reuse it in the boid
* computation (actually the ntree is used only to go faster in searching
* computation (actually the n-tree is used only to go faster in searching
* neighbors).
*
*
* @author Guilhelm Savin
* @author Antoine Dutot
* @since 2007
*/
public class BoidCellData extends BarycenterCellData {
// Attributes
......
src/org/graphstream/boids/BoidSpecies.java
View file @ c526c2c0
......@@ -8,21 +8,18 @@ import org.graphstream.boids.Context;
/**
* Parameters for each boids species.
*
* @author Guilhelm Savin
* @author Antoine Dutot
*/
public class BoidSpecies extends HashMap<String, Boid> {
/**
*
*/
private static final long serialVersionUID = 6005548670964581065L;
// Attributes
/**
* Shared settings.
*/
protected Context ctx;
/** Kinds of parameters. */
public static enum Parameter {
COUNT,
VIEW_ZONE,
......@@ -30,7 +27,7 @@ public class BoidSpecies extends HashMap<String, Boid> {
MAX_SPEED,
MIN_SPEED,
WIDTH,
TRAIL,
// TRAIL,
DIRECTION_FACTOR,
ATTRACTION_FACTOR,
REPULSION_FACTOR,
......@@ -64,7 +61,7 @@ public class BoidSpecies extends HashMap<String, Boid> {
/**
* The boid speed at each step. This is the factor by which the speedFactor
* vector is scaled to move the boid at each step. This therefore not only
* accelerate the boid displacement, it also impacts the boid behaviour
* accelerate the boid displacement, it also impacts the boid behavior
* (oscillation around the destination point, etc.)
*/
public double speedFactor = 0.3f;
......@@ -116,26 +113,22 @@ public class BoidSpecies extends HashMap<String, Boid> {
public double fearFactor = 1;
/**
* The species main colour.
* The species main color.
*/
public Color color = new Color(1, 0, 0);
/**
* The size of the trail in the GUI if any.
*/
public int trail = 0;
// /**
// * The size of the trail in the GUI if any.
// */
// public int trail = 0;
/**
* The width of the particle in the GUI if any.
*/
public int width = 4;
//protected DemographicManager demographicManager;
// Constructors
/**
* New default species with a random colour.
* New default species with a random color.
*/
public BoidSpecies(Context ctx, String name) {
this.ctx = ctx;
......@@ -144,11 +137,8 @@ public class BoidSpecies extends HashMap<String, Boid> {
ctx.random.nextFloat());
}
// Access
// Commands
private int currentIndex = 0;
private long timestamp = System.nanoTime();
public void set(String p, String val) throws IllegalArgumentException {
......@@ -177,9 +167,9 @@ public class BoidSpecies extends HashMap<String, Boid> {
case WIDTH:
width = Integer.parseInt(val);
break;
case TRAIL:
trail = Integer.parseInt(val);
break;
// case TRAIL:
// trail = Integer.parseInt(val);
// break;
case DIRECTION_FACTOR:
directionFactor = Double.parseDouble(val);
break;
......@@ -227,106 +217,196 @@ public class BoidSpecies extends HashMap<String, Boid> {
return size();
}
/**
* Initial number of boids of this species.
*/
public int getCount() {
return count;
}
/**
* Change the initial number of boids of this species.
*/
public void setCount(int count) {
this.count = count;
}
/**
* The species name.
*/
public String getName() {
return name;
}
/**
* Change the species name.
*/
public void setName(String name) {
this.name = name;
}
/**
* The distance at which a boid is seen.
*/
public double getViewZone() {
return viewZone;
}
/**
* Change the distance at which a boid is seen.
*/
public void setViewZone(double viewZone) {
this.viewZone = viewZone;
}
/**
* The boid speed at each step. This is the factor by which the speedFactor
* vector is scaled to move the boid at each step. This therefore not only
* accelerate the boid displacement, it also impacts the boid behavior
* (oscillation around the destination point, etc.)
*/
public double getSpeedFactor() {
return speedFactor;
}
/**
* Change the boid speed at each step.
*/
public void setSpeedFactor(double speedFactor) {
this.speedFactor = speedFactor;
}
/**
* Maximum speed bound.
*/
public double getMaxSpeed() {
return maxSpeed;
}
/**
* Change the maximum speed bound.
*/
public void setMaxSpeed(double maxSpeed) {
this.maxSpeed = maxSpeed;
}
/**
* Minimum speed bound.
*/
public double getMinSpeed() {
return minSpeed;
}
/**
* Change the minimum speed bound.
*/
public void setMinSpeed(double minSpeed) {
this.minSpeed = minSpeed;
}
/**
* The importance of the other boids direction "overall" vector. The
* direction vector is the sum of all the visible boids direction vector
* divided by the number of boids seen. This factor is the importance of
* this direction in the boid direction.
*/
public double getDirectionFactor() {
return directionFactor;
}
/**
* Change the importance of the other boids direction "overall" vector.
*/
public void setDirectionFactor(double directionFactor) {
this.directionFactor = directionFactor;
}
/**
* How much other visible boids attract a boid. The barycenter of the
* visible boids attract a boid. The attraction is the vector between the
* boid an this barycenter. This factor is the importance of this vector in
* the boid direction.
*/
public double getAttractionFactor() {
return attractionFactor;
}
/**
* Change how much other visible boids attract a boid.
*/
public void setAttractionFactor(double attractionFactor) {
this.attractionFactor = attractionFactor;
}
/**
* All the visible boids repulse the boid. The repulsion vector is the sum
* of all the vectors between all other visible boids and the considered
* boid, scaled by the number of visible boids. This factor is the
* importance of this vector in the boid direction.
*/
public double getRepulsionFactor() {
return repulsionFactor;
}
/**
* Change how all the visible boids repulse the boid.
*/
public void setRepulsionFactor(double repulsionFactor) {
this.repulsionFactor = repulsionFactor;
}
/**
* The inertia is the importance of the boid previous direction in the boid
* direction.
*/
public double getInertia() {
return inertia;
}
/**
* Change the inertia is the importance of the boid previous direction in the boid
* direction.
*/
public void setInertia(double inertia) {
this.inertia = inertia;
}
/**
* Factor for repulsion on boids of other species. The fear that this
* species produces on other species.
*/
public double getFearFactor() {
return fearFactor;
}
/**
* Change the factor for repulsion on boids of other species.
*/
public void setFearFactor(double fearFactor) {
this.fearFactor = fearFactor;
}
/**
* The species main color.
*/
public Color getColor() {
return color;
}
/**
* Change the species main color.
*/
public void setColor(Color color) {
this.color = color;
}
public void setTrail(int trail) {
this.trail = trail;
}
// public void setTrail(int trail) {
// this.trail = trail;
// }
/**
* Change the width of the particle in the GUI if any.
*/
public void setWidth(int width) {
this.width = width;
}
......
src/org/graphstream/boids/Forces.java
View file @ c526c2c0
......@@ -41,19 +41,39 @@ import org.miv.pherd.geom.Vector3;
import org.miv.pherd.ntree.Cell;
/**
* Models the forces applied to a boid.
* Models the forces applied to a boid at each step.
*
* <p>
* This object is modified at each computation step to represent the forces applied to
* a boid particle in the forces system. It is in charge of going down the n-tree used
* to represent space and collect all the other boids in the field of view that could influence
* this boid. It then integrates these forces and compute a direction and barycenter (the
* point the boid tries to reach).
* </p>
*
* @author Guilhelm Savin
* @author Antoine Dutot
*/
public abstract class Forces {
/** The position the boid tries to reach at each step. */
public Point3 barycenter;
/** The direction of the boid at each step. */
public Vector3 direction;
/** The integrated attraction toward other boids in view at each step. */
public Vector3 attraction;
/** The integrated repulsion from the other boids in view at each step. */
public Vector3 repulsion;
/** The number of boids we are attracted to. */
public int countAtt;
/** The number of boids we are repulsed from. */
public int countRep;
/** Forces all set at zero. */
public Forces() {
barycenter = new Point3();
direction = new Vector3();
......@@ -91,30 +111,42 @@ public abstract class Forces {
boid.setAttribute("force2", repulsion);
}
/** Integrate a repulsion vector. */
public void addRepulsion(Vector3 rep) {
repulsion.add(rep);
countRep++;
}
/** Integrate a direction influence. */
public void addDirection(Vector3 dir) {
direction.add(dir);
countAtt++;
}
/** Integrate an attraction vector. */
public void addAttraction(Vector3 att) {
attraction.add(att);
countAtt++;
}
/** Integrate a new point of influence. */
public void moveBarycenter(Point3 p) {
barycenter.move(p);
}
/** Is the another point is space in the field of view? */
public abstract boolean isVisible(BoidParticle boid, Point3 other);
/**
* A definition of the forces.
* A basic definition of forces for a boid.
*
* <p>
* The kind of forces exercising on a boid can be changed to either use a n-tree or not,
* or to account for other kind of forces or another force model. This is the default
* force system that matches the basic boid definition as defined by Craig Reynolds.
* </p>
*
* @author Guilhelm Savin
* @author Antoine Dutot
*/
public static class BasicForces extends Forces {
......@@ -199,10 +231,6 @@ public abstract class Forces {
}
}
// source.getBoid().checkNeighborhood(
// contacts == null ? null : contacts
// .toArray(new BoidParticle[contacts.size()]));
// barycenter.move( data.getCenter() );
// direction.add( data.getDirection() );
}
......@@ -238,14 +266,14 @@ public abstract class Forces {
// intersection (cases c, d, e and f).
//
// |-a-| +---------+ |-b-|
// | |
// |-c-| |-d-|
// | |
// | |-e-| |
// | |
// |-+----f----+-|
// | |
// +---------+
// | |
// |-c-| |-d-|
// | |
// | |-e-| |
// | |
// |-+----f----+-|
// | |
// +---------+
if (X2 < x1 || X1 > x2)
return false;
......@@ -262,15 +290,23 @@ public abstract class Forces {
/**
* True if the given position is visible by the boid.
*
* <p>
* This method first check if the given point is under the max distance of
* view. If so, it checks if the point is in the angle of view. The angle
* of view is specified as the cosine of the angle between the boid direction
* vector and the vector between the boid and the given point. This means
* that -1 is equal to a 360 degree of vision (the angle of view test is
* deactivated in this case), 0 means 180 degree angle, and 0.5 a 90 degree
* angle for example.
* </p>
*
* @param source
* The source boid.
* @param point
* The point to consider.
* @return A true if point is visible.
*
* @return True if point is visible by source.
*/
/* protected boolean isVisible(BoidParticle source, Point3 point) {
double d = point.distance(source.getPosition());
return (d <= source.getBoid().getSpecies().viewZone);
}
*/
@Override
public boolean isVisible(BoidParticle source, Point3 point) {
// Check both the distance and angle of view according to the direction
......@@ -305,6 +341,13 @@ public abstract class Forces {
return false;
}
/**
* A boid particle p2 that is visible by p1 as been found, integrate it in the forces that
* apply to the boid p1.
* @param p1 The source boid.
* @param p2 the boid visible by p1.
* @param rep The repulsion to compute.
*/
protected void actionWithNeighboor(BoidParticle p1, BoidParticle p2,
Vector3 rep) {
Point3 pp = p2.getPosition();
......
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