/*
* Try to split the range to multiple ranges based on the hash key.
*
* e.g., for the following range:
*
* min: 123456789
* max: 125678912
*
* when the hash key length is 3, we want to split the range to:
*
* 1
* min: 123456789
* max: 123999999
*
* 2
* min: 124000000
* max: 124999999
*
* 3
* min: 125000000
* max: 125678912
*
* For this range:
*
* min: -125678912
* max: -123456789
*
* we want:
*
* 1
* min: -125678912
* max: -125000000
*
* 2
* min: -124999999
* max: -124000000
*
* 3
* min: -123999999
* max: -123456789
*/
public IReadOnlyList <GeohashRange> TrySplit(int hashKeyLength)
{
var result = new List <GeohashRange>();
var minHashKey = S2Manager.GenerateHashKey(RangeMin, hashKeyLength);
var maxHashKey = S2Manager.GenerateHashKey(RangeMax, hashKeyLength);
var denominator = (ulong)Math.Pow(10, RangeMin.ToString(CultureInfo.InvariantCulture).Length - minHashKey.ToString(CultureInfo.InvariantCulture).Length);
if (minHashKey == maxHashKey)
{
result.Add(this);
}
else
{
for (var l = minHashKey; l <= maxHashKey; l++)
{
if (l > 0)
{
result.Add(new GeohashRange(l == minHashKey ? RangeMin : l * denominator,
l == maxHashKey ? RangeMax : (l + 1) * denominator - 1));
}
else
{
result.Add(new GeohashRange(l == minHashKey ? RangeMin : (l - 1) * denominator + 1,
l == maxHashKey ? RangeMax : l * denominator));
}
}
}
return(result);
}
private void buttonText_Click(object sender, EventArgs e)
{
CustomDialog.KeyboardDialog kdlg = new CustomDialog.KeyboardDialog();
kdlg.ValLower = RangeMin;
kdlg.ValUpper = RangeMax;
kdlg.DispMode = KeyboardDialog.KB_MODE.NUMBER; //数値
string strrange = RangeMax.ToString(StringForm);
int digits = strrange.IndexOf('.');
kdlg.LengthInt = (digits < 0) ? strrange.Length : digits;
kdlg.LengthDec = (digits < 0) ? 0 : (strrange.Length - digits - 1);
kdlg.AllLength = Math.Max(strrange.Length, RangeMin.ToString(StringForm).Length);
string msgfmt = CommonProc.MessageText("G001");
msgfmt = msgfmt.Replace("%param", paramName);
msgfmt = msgfmt.Replace("%min", RangeMin.ToString(StringForm));
msgfmt = msgfmt.Replace("%max", RangeMax.ToString(StringForm));
kdlg.Message_Text = msgfmt;
kdlg.InputArea = _buttonText.Text;
kdlg.AllowNone = allowNone;
if (kdlg.ShowDialog() == DialogResult.OK)
{
if (allowNone && kdlg.InputArea == "")
{
Value = double.NaN;
}
else
{
Value = double.Parse(kdlg.InputArea);
}
if (ValueChanged != null)
{
ValueChanged(sender, e);
}
}
kdlg.Dispose();
Invalidate();
}
void Canvas_PaintSurface(object sender, SKPaintSurfaceEventArgs args)
{
SKImageInfo info = args.Info;
var halfWidth = info.Width / 2;
var halfHeight = info.Height / 2;
SKSurface surface = args.Surface;
SKCanvas canvas = surface.Canvas;
CanvasScale = info.Height / this.Height;
StepDollarValue = 100;
var maxLength = (info.Height - 50) - 50;
StepSize = (StepDollarValue * maxLength) / 5000;
if (!TouchY.HasValue)
{
// set the knob locations on first draw pass
// get y for top of line
if (SelectedRange is null)
{
SelectedRange = new Tuple <int?, int?>(0, 5000);
}
var maxValue = SelectedRange.Item2 ?? 5000;
var minValue = SelectedRange.Item1 ?? 0;
var topSteps = (5000 - maxValue) / StepDollarValue;
var bottomSteps = minValue / StepDollarValue;
TopKnobCenter = new Tuple <float, float>(halfWidth, 50 + (topSteps * StepSize));
BottomKnobCenter = new Tuple <float, float>(halfWidth, (info.Height - 50) - (bottomSteps * StepSize));
RangeMax = maxValue;
RangeMin = minValue;
}
else
{
// set the knob locations on movement
if (isDrawing)
{
return;
}
isDrawing = true;
var newY = (float)(TouchY.Value * CanvasScale);
if ((float)Math.Round(newY) <= 50.0f && MovingTopKnob)
{
newY = 50.0f;
}
else if ((float)Math.Round(newY) >= info.Height - 50.0f && MovingBottomKnob)
{
newY = info.Height - 50.0f;
}
if (MovingTopKnob || (Math.Abs(newY - TopKnobCenter.Item2) <= 50 && !MovingBottomKnob))
{
MovingTopKnob = true;
MovingBottomKnob = false;
var numOfSteps = (float)Math.Round(Math.Abs(newY - 50) / StepSize);
var topDollarValue = 5000 - (numOfSteps * StepDollarValue);
if (topDollarValue - RangeMin >= StepDollarValue * 3)
{
TopKnobCenter = new Tuple <float, float>(halfWidth, 50 + (numOfSteps * StepSize));
RangeMax = (int)Math.Max(RangeMin.Value, topDollarValue);
Console.WriteLine($"Max value: {RangeMax}");
}
//get distance from topknobCenter to top of the view
}
else if (MovingBottomKnob || (Math.Abs(newY - BottomKnobCenter.Item2) <= 50 && !MovingTopKnob))
{
MovingTopKnob = false;
MovingBottomKnob = true;
var numOfSteps = (float)Math.Round(Math.Abs(newY - (info.Height - 50)) / StepSize);
var bottomDollarValue = (numOfSteps * StepDollarValue);
if (RangeMax - bottomDollarValue >= StepDollarValue * 3)
{
BottomKnobCenter = new Tuple <float, float>(halfWidth, info.Height - (numOfSteps * StepSize) - 50);
//get distance from topknobCenter to top of the view
RangeMin = (int)Math.Min(RangeMax.Value, bottomDollarValue);
Console.WriteLine($"Min value: {RangeMin}");
}
}
SelectedRange = new Tuple <int?, int?>(RangeMin, RangeMax);
}
RangeMinString = RangeMin?.ToString("C0");
RangeMaxString = RangeMax?.ToString("C0") + (Math.Abs(RangeMax.Value - 5000) < float.Epsilon ? "+" : "");
canvas.Clear();
// draw line in between --order of drawing is important
canvas.DrawLine(halfWidth, 50,
halfWidth, info.Height - 50, linePaint);
// draw top circle
canvas.DrawCircle(TopKnobCenter.Item1, TopKnobCenter.Item2, knobRadius, endKnobPaint);
// draw bottom circle
canvas.DrawCircle(BottomKnobCenter.Item1, BottomKnobCenter.Item2, knobRadius, endKnobPaint);
InternalValueChange = true;
InternalValueChange = false;
isDrawing = false;
}
