// modify the Z value of [index] and
// update the value of all subsequent Z values
// by maintaining the original delta
private bool AdjustZ(int index, double deltaZ)
{
if (index > Tpts3.IndexOfEndPoint ||
index < 1 ||
double.IsNaN(deltaZ))
{
return(false);
}
Tpts3.BatchBegin();
// change the Z value of the indexed point
// based on the Z value of the prior point
// plus the new delta
Tpts3[index].Z = Tpts3[index - 1].Z + deltaZ;
// update the Z value of all subsequent points
// based on the Z value of the prior point
// plus the original delta
for (int i = ++index; i < Tpts3.Count; i++)
{
Tpts3[i].Z = Tpts3[i - 1].Z + Tpts3[i].ZΔ;
}
Tpts3.BatchFinalize();
return(true);
}
public void BtnBatchAddAmtToYfrom3On_Click()
{
if (!Tpts3Mgr.DataLoaded)
{
DataNotLoaded();
return;
}
int seed = 2;
Tpts3.Append = "\n*** run test: batch Add Amt to [3+]Y ***\n";
Tpts3.BatchBegin();
for (int i = 3; i < Tpts3.Count; i++)
{
seed = (i * 3) + seed;
Tpts3[i].Y += seed;
}
Tpts3.BatchFinalize();
Tpts3.Append = "\n*** run test: Complete ***\n\n";
}
public void BatchIncreaseEachXyxByAmount(int startIdx, string which, double amount)
{
if (startIdx > Tpts3.IndexOfEndPoint || startIdx < 1 ||
double.IsNaN(amount)
)
{
return;
}
Tpts3.BatchBegin();
for (int i = startIdx; i < Tpts3.Count; i++)
{
Tpts3[i][which] += amount;
}
Tpts3.BatchFinalize();
}
