internal void calcBlockSize(IFrequencyBasedSelecter master)
{
if (master.Frequency != -1 && SubBlockHeight != -1 && NumSubBlocks != -1)
{
BlockSize = master.Frequency * SubBlockHeight * NumSubBlocks;
}
}
bool ValidateFreqSelecter(IFrequencyBasedSelecter freqSelecter)
{
//ensure sampler frequency matches sample group freqency
if (freqSelecter != null
&& freqSelecter.Frequency != this.SamplingFrequency
|| freqSelecter.ITreeFrequency != this.InsuranceFrequency)
{
//older versions of FMSC.Sampling would use -1 instead of 0 if InsuranceFrequency was 0
if (freqSelecter.ITreeFrequency == -1
&& this.InsuranceFrequency == 0)
{ return true; }
return false;
}
else { return true; }
}
//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();
}
