private void DrawValueGrid()
{
float pixels = RenderArea.height; // number of available pixels to render value grid
double deltaValue = MaxValue - MinValue;
if (_LabelStyle != null)
{
_PixelRequiredForLabel = _LabelStyle.CalcSize(_SampleText).y; // number of pixel required to draw a value label
}
else
{
_PixelRequiredForLabel = 10;
}
int num = Mathf.FloorToInt(pixels / (_PixelRequiredForLabel * 3));// number of labels can we draw
_BigStep = deltaValue / num;
bool extraDecimal = TimeBar.NormalizeStep(ref _BigStep);// normalize step to first upper round value
if (_BigStep >= 0.1)
{
_Format = extraDecimal ? "{0:F2}" : "{0:F1}"; _Factor = 10;
}
else if (_BigStep >= 0.01)
{
_Format = extraDecimal ? "{0:F3}" : "{0:F2}"; _Factor = 100;
}
else if (_BigStep >= 0.001)
{
_Format = extraDecimal ? "{0:F4}" : "{0:F3}"; _Factor = 1000;
}
else
{
_Format = extraDecimal ? "{0:F5}" : "{0:F4}"; _Factor = 10000;
}
bool fiveSplit = (long)(_BigStep * _Factor) % 10 == 5;
_SmallStep = _BigStep * (fiveSplit ? 0.2 : 0.5);
_Factor = 1000000; // scale doubles and convert to longs because of better divide precision
_LongStep = (long)(_BigStep * _Factor);
_LongMiniStep = (long)(_SmallStep * _Factor);
_LongMinValue = (long)(MinValue * _Factor);
_LongMaxValue = (long)(MaxValue * _Factor);
_LongFirstStep = (_LongMinValue / _LongMiniStep + 1) * _LongMiniStep;
_DPy = pixels / deltaValue; // number of pixel required for each unit of time
long fs = _LongFirstStep; // start by first time
while (fs < _LongMaxValue)
{
float y = (float)((double)(fs - _LongMinValue) / _Factor * _DPy);
if (fs % _LongStep == 0)
{
DrawHorizontalLine(y, true);
string text = GetFormattedTime(fs);
DrawText(y, text);
}
else
{
DrawHorizontalLine(y, false);
}
fs += _LongMiniStep;
}
}
