private double GetCoordinateFromTick(double tick, Size screenSize)
{
return(ValueToScreen(DataTransform.DataToPlot(tick), screenSize, Range));
}
private void CreateTicks(Size axisSize)
{
Range range = new Range(
DataTransform.PlotToData(Double.IsInfinity(Range.Min) || Double.IsNaN(Range.Min) ? 0 : Range.Min),
DataTransform.PlotToData(Double.IsInfinity(Range.Max) || Double.IsNaN(Range.Max) ? 1 : Range.Max));
// One tick if range is point
if (range.IsPoint)
{
var t = new double[] { range.Min };
Ticks = t;
labels = labelProvider.GetLabels(t);
return;
}
// Do first pass of ticks arrangement
ticksProvider.Range = range;
double[] ticks = ticksProvider.GetTicks();
labels = labelProvider.GetLabels(ticks);
TickChange result;
if (ticks.Length > MaxTicks)
{
result = TickChange.Decrease;
}
else if (ticks.Length < 2)
{
result = TickChange.Increase;
}
else
{
result = CheckLabelsArrangement(axisSize, labels, ticks);
}
int iterations = 0;
int prevLength = ticks.Length;
while (result != TickChange.OK && iterations++ < maxTickArrangeIterations)
{
if (result == TickChange.Increase)
{
ticksProvider.IncreaseTickCount();
}
else
{
ticksProvider.DecreaseTickCount();
}
double[] newTicks = ticksProvider.GetTicks();
if (newTicks.Length > MaxTicks && result == TickChange.Increase)
{
ticksProvider.DecreaseTickCount(); // Step back and stop to not get more than MaxTicks
break;
}
else if (newTicks.Length < 2 && result == TickChange.Decrease)
{
ticksProvider.IncreaseTickCount(); // Step back and stop to not get less than 2
break;
}
var prevTicks = ticks;
ticks = newTicks;
var prevLabels = labels;
labels = labelProvider.GetLabels(newTicks);
var newResult = CheckLabelsArrangement(axisSize, labels, ticks);
if (newResult == result) // Continue in the same direction
{
prevLength = newTicks.Length;
}
else // Direction changed or layout OK - stop the loop
{
if (newResult != TickChange.OK) // Direction changed - time to stop
{
if (result == TickChange.Decrease)
{
if (prevLength < MaxTicks)
{
ticks = prevTicks;
labels = prevLabels;
ticksProvider.IncreaseTickCount();
}
}
else
{
if (prevLength >= 2)
{
ticks = prevTicks;
labels = prevLabels;
ticksProvider.DecreaseTickCount();
}
}
break;
}
break;
}
}
Ticks = ticks;
}
