public HashSet <Intersection> Resolve2()
{
if (!initialized)
{
initialized = true;
for (int a = 0; a < nAxes; a++)
{
startAndEndPoints[a].Sort(comparer);
}
}
else
{
for (int a = 0; a < nAxes; a++)
{
InsertionSortList <ListEntry> .InsertionSort(startAndEndPoints[a], comparer);
}
}
HashSet <Intersection>[] sets = new HashSet <Intersection> [nAxes];
for (int a = 0; a < nAxes; a++)
{
List <T> openList = new List <T>();
sets[a] = new HashSet <Intersection>();
var axisStartAndEndPoints = startAndEndPoints[a];
for (int i = 0; i < axisStartAndEndPoints.Count; i++)
{
ListEntry le = axisStartAndEndPoints[i];
if (le.IsStartPoint)
{
foreach (var o in openList)
{
// assume duplicateIntesections == false for now
if (le.Object.GetHashCode() < o.GetHashCode())
{
AddToHashSet(ref sets[a], le.Object, o);
}
else
{
AddToHashSet(ref sets[a], o, le.Object);
}
}
openList.Add(le.Object);
}
else
if (!openList.Remove(le.Object))
{
throw new Exception("Removal failed");
}
}
}
for (int a = 1; a < nAxes; a++)
{
sets[0].IntersectWith(sets[a]);
}
return(sets[0]);
}
public Dictionary <ISweepAndPruneObject, List <ISweepAndPruneObject> > Resolve2()
{
Dictionary <ISweepAndPruneObject, List <ISweepAndPruneObject> > dict = new Dictionary <ISweepAndPruneObject, List <ISweepAndPruneObject> >();
if (!initialized)
{
initialized = true;
startAndEndPoints.Sort(comparer);
}
else
{
InsertionSortList <ListEntry> .InsertionSort(startAndEndPoints, comparer);
}
// TODO: Add check so that s_i < e_i for all entries
List <T> openList = new List <T>();
for (int i = 0; i < startAndEndPoints.Count; i++)
{
ListEntry le = startAndEndPoints[i];
if (le.IsStartPoint) // add object to open list
{
foreach (var o in openList) // TODO: perform precise collision detection
{
if (le.Object.Min.Y > o.Max.Y || le.Object.Max.Y < o.Min.Y)
{
continue;
}
if (duplicateIntersections)
{
//le.Object.Intersectees.Add(o);
//o.Intersectees.Add(le.Object);
AddToDictionary(ref dict, le.Object, o);
AddToDictionary(ref dict, o, le.Object);
}
else
{
// add intersection to object with lowest hashcode
if (le.Object.GetHashCode() < o.GetHashCode())
{
AddToDictionary(ref dict, le.Object, o);
}
else
{
AddToDictionary(ref dict, o, le.Object);
}
//if (le.Object.GetHashCode() < o.GetHashCode())
// le.Object.Intersectees.Add(o);
//else
// o.Intersectees.Add(le.Object);
}
}
openList.Add(le.Object); // TODO: This is quite expensive
}
else
if (!openList.Remove(le.Object))
{
throw new Exception("Removal failed");
}
}
return(dict);
}