public boolItem this[int index] {
get
{
if (SelectionList != null &&
SelectionList.Count > 0 &&
index < BlockSize &&
index >= 0)
{
boolItem item = new boolItem(index);
item = (boolItem)this.SelectionList.Find(
((SampleItem)item).Equals);
return item;
}
else
{
return null;
}
}
}
//[XmlElementAttribute(ElementName = "insuranceCounter",
// IsNullable = false, Type = typeof(Utility.SystematicCounter))]
//public Utility.SystematicCounter InsuranceCounter
//{
// get { return insuranceCounter; }
// set
// {
// if (insuranceCounter == null && value != null)
// {
// insuranceCounter = value;
// }
// else if (value == null)
// {
// throw new System.ArgumentNullException("can't set insuranceCounter to null");
// }
// else if (insuranceCounter != null)
// {
// throw new System.InvalidOperationException("can't reset insuranceCounter once it has been initialized");
// }
// }
//}
//methods
public override SampleItem NextItem()
{
this.Ready(true);
boolItem item = null;
if (base.Rand.Next(Frequency) == 0)
{
item = new boolItem(this.Count);
}
else
{
if (IsSelectingITrees && InsuranceCounter.Next())
{
item = new boolItem(Count);
item.IsInsuranceItem = true;
}
}
base.Count++;
return item;
}
//Methods
public void initBlock(IFrequencyBasedSelecter master)
{
if (this.SelectionList == null)
{
this.SelectionList = new List<SampleItem>();
}
else
{
SelectionList.Clear();
}
if (master == null)
{
throw new System.ArgumentNullException("master can't be null");
}
calcBlockSize(master);
boolItem nextSelection; //temp value
IntInterval subBlock;//interval from the start to the end of the current subblock
//select selection numbers for each subBlock
for (int i = 0; i < this.NumSubBlocks; i++)
{
//calculate the range of the current subblock
subBlock.Start = i * (master.Frequency * this.SubBlockHeight);
subBlock.End = (i + 1) * (master.Frequency * this.SubBlockHeight);
//get a random item in the range of the current subblock
nextSelection = new boolItem(master.Rand.Next(subBlock.Start, subBlock.End));
if (master.IsSelectingITrees)
{
if (master.InsuranceCounter.Next())
{
nextSelection.IsInsuranceItem = true;
}
else
{
nextSelection.IsSelected = true;
}
}
else
{
nextSelection.IsSelected = true;
}
this.selectionList.Add(nextSelection);
}
//select remaining selection numbers
for (int i = 0; i < this.NumSubBlocks; i++)
{
nextSelection = new boolItem();
//keep requesting new selection nubers untill you get one
//that you dont already have
do
{
nextSelection.Index = master.Rand.Next(0, this.NumSubBlocks * this.SubBlockHeight * master.Frequency);
} while (this.selectionList.Contains(nextSelection));
if (master.IsSelectingITrees)
{
if (master.InsuranceCounter.Next())
{
nextSelection.IsInsuranceItem = true;
}
else
{
nextSelection.IsSelected = true;
}
}
else
{
nextSelection.IsSelected = true;
}
this.selectionList.Add(nextSelection);
}
if (master.IsSelectingITrees)
{
int i = 0;
boolItem item = new boolItem(i);
//loop though the intire block
for (; i < BlockSize; i++)
{
//if nothing already exists at that block index
if (!selectionList.Contains(item))
{
//see if it might be an insurance item
if (master.InsuranceCounter.Next())
{
item.IsInsuranceItem = true;
SelectionList.Add(item);
item = new boolItem();
}
}
item.Index = i + 1;
}
}
this.selectionList.Sort();
}
public override SampleItem NextItem()
{
boolItem newItem = null;
if (CurrentIndex == _hitIndex)
{
newItem = new boolItem();
newItem.IsSelected = true;
}
else if (base.IsSelectingITrees && this.InsuranceCounter.Check() && CurrentIndex == _iHitIndex)
{
newItem = new boolItem();
newItem.IsInsuranceItem = true;
}
IncrementIndex();
this.Count++;
return newItem;
}