java - Connect collection of points by finding neighborhood points -

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i have swing application in have arraylist of points on image. want connect points such each point connected nearest neighbors.

like this:

enter image description here

so started this:

minuatiae.java

public class minutiae {   private int x;    private int y;    public minutiae(int x, int y){       this.x = x;       this.y = y;   }   public int getx() {      return x;  }   public void setx(int x) {      this.x = x;  }   public int gety() {      return y;  }   public void sety(int y) {      this.y = y;  } }

manager.java

list<minutiae> minuatiaepoints = new arraylist<minutiae>(minutiae);          for(int = 0; i<minuatiaepoints.size(); i++){             minutiae mpoint = minuatiaepoints.get(i);             minutiae minpoint = minuatiaepoints.get((i+1) % minuatiaepoints.size());             int minxdistance = minpoint.getx()-mpoint.getx();             int minydistance = minpoint.gety()-mpoint.gety();             double mindist = math.hypot(minxdistance, minydistance);              for(int j = 0; j < minuatiaepoints.size(); j++)  // <- had i++ here!             {                 if (i == j) {                     continue;                 }                  minutiae testpt = minuatiaepoints.get(j);                 double dist = math.hypot(mpoint.getx() - testpt.getx(), mpoint.gety() - testpt.gety());                 if (dist < mindist)                 {                     mindist = dist;                     minpoint = testpt;                 }             }             g2d.drawline(mpoint.getx(), mpoint.gety(), minpoint.getx(), minpoint.gety());         }

but connects 1 nearest point.

could me this? link or example code grateful.

you have 2 options:

once have minimum distance, have go @ list , connect minimum distance = min distance (therefore need find min. distance). , on second run if dist=min distance, draw line every time have equality.

the second option keep list of minimum distance points , go through list draw lines.

edit: updated add code second algortihm:

list<minutiae> minuatiaepoints = new arraylist<minutiae>(minutiae);      for(int = 0; i<minuatiaepoints.size(); i++){         minutiae mpoint = minuatiaepoints.get(i);         minutiae minpoint = minuatiaepoints.get((i+1) % minuatiaepoints.size());         int minxdistance = minpoint.getx()-mpoint.getx();         int minydistance = minpoint.gety()-mpoint.gety();         double mindist = math.hypot(minxdistance, minydistance);          list<minutiae> mindistpoints = new arraylist<minutiae>();          for(int j = 0; j < minuatiaepoints.size(); j++)  // <- had i++ here!         {             if (i == j) {                 continue;             }              minutiae testpt = minuatiaepoints.get(j);             double dist = math.hypot(mpoint.getx() - testpt.getx(), mpoint.gety() - testpt.gety());             if (dist < mindist)             {                 mindist = dist;                 mindistpoints  = new arraylist<minutiae>();                 mindistpoints.add(testpt);             } else if (dist = mindist) {                 mindistpoints.add(testpt);             }         }          for(minutae p: mindistpoints){             g2d.drawline(mpoint.getx(), mpoint.gety(), p.getx(), p.gety());         }     }

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