/**
* @return number of rows we could safely skip during scanning, based on the first two finder
* patterns that have been located. In some cases their position will allow us to infer that
* the third pattern must lie below a certain point farther down in the image.
*/
private int findRowSkip() {
int max = possibleCenters.size();
if (max <= 1) {
return 0;
}
FinderPattern firstConfirmedCenter = null;
for (FinderPattern center : possibleCenters) {
if (center.getCount() >= CENTER_QUORUM) {
if (firstConfirmedCenter == null) {
firstConfirmedCenter = center;
} else {
// We have two confirmed centers
// How far down can we skip before resuming looking for the next
// pattern? In the worst case, only the difference between the
// difference in the x / y coordinates of the two centers.
// This is the case where you find top left last.
hasSkipped = true;
return (int)
(Math.abs(firstConfirmedCenter.getX() - center.getX())
- Math.abs(firstConfirmedCenter.getY() - center.getY()))
/ 2;
}
}
}
return 0;
}
private int findRowSkip()
{
if (this.possibleCenters.size() <= 1) {}
Object localObject;
FinderPattern localFinderPattern;
for (;;)
{
return 0;
localObject = null;
Iterator localIterator = this.possibleCenters.iterator();
while (localIterator.hasNext())
{
localFinderPattern = (FinderPattern)localIterator.next();
if (localFinderPattern.getCount() >= 2)
{
if (localObject != null) {
break label63;
}
localObject = localFinderPattern;
}
}
}
label63:
this.hasSkipped = true;
return (int)(Math.abs(localObject.getX() - localFinderPattern.getX()) - Math.abs(localObject.getY() - localFinderPattern.getY())) / 2;
}