private static double[] GenerateTickPositions(CoordinateRange range, PixelLength size, float predictedTickSize)
{
double unitsPerPx = range.Span / size.Length;
float tickDensity = 1.0f;
int targetTickCount = (int)(size.Length / predictedTickSize * tickDensity);
double tickSpacing = GetIdealTickSpacing(range, targetTickCount);
double firstTickOffset = range.Min % tickSpacing;
int tickCount = (int)(range.Span / tickSpacing) + 2;
tickCount = Math.Min(1000, tickCount);
tickCount = Math.Max(1, tickCount);
double[] majorTickPositions = Enumerable.Range(0, tickCount)
.Select(x => range.Min - firstTickOffset + tickSpacing * x)
.Where(x => range.Contains(x))
.ToArray();
if (majorTickPositions.Length < 2)
{
double tickBelow = range.Min - firstTickOffset;
double firstTick = majorTickPositions.Length > 0 ? majorTickPositions[0] : tickBelow;
double nextTick = tickBelow + tickSpacing;
majorTickPositions = new double[] { firstTick, nextTick };
}
return(majorTickPositions);
}
private static double[] MinorFromMajor(double[] majorTicks, double minorTicksPerMajorTick, CoordinateRange range)
{
if (majorTicks == null || majorTicks.Length < 2)
{
return new double[] { }
}
;
double majorTickSpacing = majorTicks[1] - majorTicks[0];
double minorTickSpacing = majorTickSpacing / minorTicksPerMajorTick;
List <double> majorTicksWithPadding = new()
{
majorTicks[0] - majorTickSpacing
};
majorTicksWithPadding.AddRange(majorTicks);
List <double> minorTicks = new();
foreach (var majorTickPosition in majorTicksWithPadding)
{
for (int i = 1; i < minorTicksPerMajorTick; i++)
{
double minorTickPosition = majorTickPosition + minorTickSpacing * i;
if (range.Contains(minorTickPosition))
{
minorTicks.Add(minorTickPosition);
}
}
}
return(minorTicks.ToArray());
}
public IEnumerable <Tick> GetVisibleTicks(CoordinateRange range)
{
return(Ticks.Where(x => range.Contains(x.Position)));
}