Attractor fields 2

var Vec2D = toxi.geom.Vec2D;

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import toxi.geom.*;

import toxi.processing.*;

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int n_attractors=10;

int cell=10; // cell size

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Vec2D[] gravityPCollection= new Vec2D[n_attractors];

Vec2D[] orientorCollection;

Vec2D[] orientorSortedCollection;

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float[] gravity= new float[n_attractors];

float[] distCollection;

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ArrayList particuleCollection;

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boolean lancer =true;

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void setup() {

  size( 700, 700 );

  background(250, 250, 250);

  smooth();

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  particuleCollection= new ArrayList();

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  // POINT ATTRACTEUR

  for (int i = 0; i < 10; i = i+1) {

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    gravityPCollection[i]= new Vec2D(random(width), random(height));

    gravity[i]=random(1, 100);

  }

    // POINTS  

  for (int i=0; i<=width; i=i+cell) {

    for (int j=0; j<=height; j=j+cell) {

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      Vec2D p = new Vec2D(i, j);

      particuleCollection.add(p);

    }

  }

}

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void draw() {

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  orientorCollection= new Vec2D[particuleCollection.size()];

  distCollection= new float[particuleCollection.size()];

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  for (int j=0; j< particuleCollection.size (); j++) {

    Vec2D p = (Vec2D)particuleCollection.get(j);

    Vec2D target = new Vec2D();

    float distTot= 0;

    float minDist=100000000;

    int minIdx=0;

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    for (int i=0; i<n_attractors; i++) {

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      float disti = p.distanceTo(gravityPCollection[i]);

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      if (disti<minDist) {

        minDist=disti;

      }

      Vec2D  vi = gravityPCollection[i].sub(p);

      vi.normalize();

      vi.scaleSelf(gravity[i]/disti);

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      target.addSelf(vi);

    }  

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    target.normalizeTo(5);

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    // STOCKAGE DES ORIENTEURS et DISTANCES 

    orientorCollection[j]=target;

    distCollection[j]= minDist;

  }

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  float distmax=max(distCollection);

  float distmin=min(distCollection);

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  orientorSortedCollection= new Vec2D[particuleCollection.size()];

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  for (int j=0; j< particuleCollection.size (); j++) {

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    Vec2D temp=orientorCollection[j].getRotated(PI/2);

    orientorSortedCollection[j] =  temp.normalizeTo(3);

  }

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  for (int j=0; j< particuleCollection.size (); j++) {

    Vec2D p =  (Vec2D)particuleCollection.get(j);  

    p.addSelf(orientorSortedCollection[j]);

    noStroke();

    fill(25, 25, 114, 20);

    ellipse(p.x, p.y, 1, 1);

  }

}

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