public Embedder2D(DistancedPoints p) {
this.points = p;
tableLastUpdated = points.getLastUpdateTime();
savedPoints = new ArrayList<String>();
for (int i = 0; i < points.getCount(); i++) savedPoints.add(points.getPointId(i));
xy = new Vector2D[points.getCount()];
for (int i = 0; i < points.getCount(); i++) xy[i] = new Vector2D(0, 0);
maxX = 0;
maxY = 0;
minX = 0;
minY = 0;
}
private void updateStructure(long u) {
tableLastUpdated = u;
ArrayList<String> newPoints = new ArrayList<String>();
for (int i = 0; i < points.getCount(); i++) newPoints.add(points.getPointId(i));
Vector2D[] newxy = new Vector2D[newPoints.size()];
for (int i = 0; i < newxy.length; i++) {
int index = savedPoints.indexOf(newPoints.get(i));
if (index >= 0 && index < savedPoints.size()) newxy[i] = xy[index];
else newxy[i] = new Vector2D();
}
xy = newxy;
savedPoints = newPoints;
}