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 <T> GetTicks(Range <T> range, int ticksCount)
{
T start = range.Min;
T end = range.Max;
DifferenceIn diff = Difference;
start = RoundDown(start, end);
end = RoundUp(start, end);
RoundingInfo bounds = RoundingHelper.CreateRoundedRange(
GetSpecificValue(start, start),
GetSpecificValue(start, end));
int delta = (int)(bounds.Max - bounds.Min);
if (delta == 0)
{
return new TicksInfo <T> {
Ticks = new T[] { start }
}
}
;
int step = delta / ticksCount;
if (step == 0)
{
step = 1;
}
T tick = GetStart(start, (int)bounds.Min, step);
bool isMinDateTime = IsMinDate(tick) && step != 1;
if (isMinDateTime)
{
step--;
}
List <T> ticks = new List <T>();
T finishTick = AddStep(range.Max, step);
while (Continue(tick, finishTick))
{
ticks.Add(tick);
tick = AddStep(tick, step);
if (isMinDateTime)
{
isMinDateTime = false;
step++;
}
}
ticks = Trim(ticks, range);
TicksInfo <T> res = new TicksInfo <T> {
Ticks = ticks.ToArray(), Info = diff
};
return(res);
}
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);
}
