protected void Init(double[] ticks)
{
if (ticks.Length == 0)
{
return;
}
double start = ticks[0];
double finish = ticks[ticks.Length - 1];
if (start == finish)
{
shouldRound = false;
return;
}
double delta = finish - start;
rounding = (int)Math.Round(Math.Log10(delta));
double newStart = RoundingHelper.Round(start, rounding);
double newFinish = RoundingHelper.Round(finish, rounding);
if (newStart == newFinish)
{
rounding--;
}
}
public ITicksInfo <double> GetTicks(Range <double> range, int ticksCount)
{
double start = range.Min;
double finish = range.Max;
double delta = finish - start;
int log = (int)Math.Round(Math.Log10(delta));
double newStart = RoundingHelper.Round(start, log);
double newFinish = RoundingHelper.Round(finish, log);
if (newStart == newFinish)
{
log--;
newStart = RoundingHelper.Round(start, log);
newFinish = RoundingHelper.Round(finish, log);
}
// calculating step between ticks
double unroundedStep = (newFinish - newStart) / ticksCount;
int stepLog = log;
// trying to round step
double step = RoundingHelper.Round(unroundedStep, stepLog);
if (step == 0)
{
stepLog--;
step = RoundingHelper.Round(unroundedStep, stepLog);
if (step == 0)
{
// step will not be rounded if attempts to be rounded to zero.
step = unroundedStep;
}
}
if (step < minStep)
{
step = minStep;
}
if (step != 0.0)
{
ticks = CreateTicks(start, finish, step);
}
else
{
ticks = new double[] { };
}
TicksInfo <double> res = new TicksInfo <double> {
Info = log, Ticks = ticks
};
return(res);
}
protected override string GetStringCore(LabelTickInfo <double> tickInfo)
{
string res;
if (!shouldRound)
{
res = tickInfo.Tick.ToString();
}
else
{
int round = Math.Min(15, Math.Max(-15, rounding - 3)); // was rounding - 2
res = RoundingHelper.Round(tickInfo.Tick, round).ToString();
}
return(res);
}