/**
* Orders the stroke list such that connected strokes are in order of consistency (not time)
*
* @param list stroke list
* @return re-ordered stroke list
*/
private List<Stroke> orderStrokes(List<Stroke> list) {
if (list.size() < 3) {
Collections.sort(list);
return list;
}
List<Stroke> orderedList = new ArrayList<Stroke>();
orderedList.add(list.get(0));
list.remove(0);
while (list.size() > 0) {
Point curr = orderedList.get(orderedList.size() - 1).getLastPoint();
Point curr2 = orderedList.get(orderedList.size() - 1).getFirstPoint();
double closest = Double.MAX_VALUE;
Stroke closestStr = null;
for (Stroke s : list) {
double dist1 = curr.distance(s.getFirstPoint());
double dist2 = curr.distance(s.getLastPoint());
double dist3 = curr2.distance(s.getFirstPoint());
double dist4 = curr2.distance(s.getLastPoint());
if (dist1 < closest) {
closest = dist1;
closestStr = s;
}
if (dist2 < closest) {
closest = dist2;
closestStr = s;
}
if (dist3 < closest) {
closest = dist3;
closestStr = s;
}
if (dist4 < closest) {
closest = dist4;
closestStr = s;
}
}
orderedList.add(closestStr);
list.remove(closestStr);
}
return orderedList;
}
/**
* Perform segmentation
*
* @return segmentation interpretation
*/
private Segmentation doSegmentation() {
Segmentation seg = new Segmentation();
ArrayList<Stroke> substrokes = new ArrayList<Stroke>();
Stroke s1 = new Stroke();
Stroke s2 = new Stroke();
for (int i = 0; i < m_features.getNumOrigPoints(); i++) {
if ((double) i / m_features.getNumOrigPoints() >= 0.5)
s2.addPoint(m_features.getOrigPoints().get(i));
else s1.addPoint(m_features.getOrigPoints().get(i));
}
substrokes.add(s1);
substrokes.add(s2);
// Set the parent
for (Stroke substroke : substrokes) {
substroke.setParent(m_features.getOrigStroke());
}
seg.setSegmentedStrokes(substrokes);
seg.setSegmenterName(S_SEGMENTER_NAME);
return seg;
}
