private synchronized void adjust() {
// Generate random position in graph space
tempISOM = new ISOMVertexData();
tempXYD = new Coordinates();
// creates a new XY data location
tempXYD.setX(10 + Math.random() * getCurrentSize().getWidth());
tempXYD.setY(10 + Math.random() * getCurrentSize().getHeight());
// Get closest vertex to random position
Vertex winner = elementAccessor.getVertex(tempXYD.getX(), tempXYD.getY());
while (true) {
try {
for (Iterator iter = getVisibleVertices().iterator(); iter.hasNext(); ) {
Vertex v = (Vertex) iter.next();
ISOMVertexData ivd = getISOMVertexData(v);
ivd.distance = 0;
ivd.visited = false;
}
break;
} catch (ConcurrentModificationException cme) {
}
}
adjustVertex(winner);
}
/**
* (non-Javadoc)
*
* @see
* edu.uci.ics.jung.visualization.AbstractLayout#initialize_local_vertex(edu.uci.ics.jung.graph.Vertex)
*/
protected void initialize_local_vertex(Vertex v) {
ISOMVertexData vd = getISOMVertexData(v);
if (vd == null) {
vd = new ISOMVertexData();
v.addUserDatum(getIsomKey(), vd, UserData.REMOVE);
}
vd.visited = false;
}
private synchronized void adjustVertex(Vertex v) {
queue.removeAllElements();
ISOMVertexData ivd = getISOMVertexData(v);
ivd.distance = 0;
ivd.visited = true;
queue.add(v);
Vertex current;
while (!queue.isEmpty()) {
current = (Vertex) queue.remove(0);
ISOMVertexData currData = getISOMVertexData(current);
Coordinates currXYData = getCoordinates(current);
double dx = tempXYD.getX() - currXYData.getX();
double dy = tempXYD.getY() - currXYData.getY();
double factor = adaption / Math.pow(2, currData.distance);
currXYData.addX(factor * dx);
currXYData.addY(factor * dy);
if (currData.distance < radius) {
Set s = current.getNeighbors();
while (true) {
try {
for (Iterator iter = s.iterator(); iter.hasNext(); ) {
Vertex child = (Vertex) iter.next();
ISOMVertexData childData = getISOMVertexData(child);
if (childData != null && !childData.visited) {
childData.visited = true;
childData.distance = currData.distance + 1;
queue.addElement(child);
}
}
break;
} catch (ConcurrentModificationException cme) {
}
}
}
}
}
