internal void DrawGrid(PanelControl pan)
{
var gs = _graphPanel.GetMasterGraph(pan);
if (gs == null)
{
return;
}
if (double.IsInfinity(gs.MaxD))
{
gs.MaxD = gs.MinD + 100.0;
}
if (double.IsNaN(gs.MaxD))
{
gs.MaxD = gs.MinD + 100.0;
}
var xStep = 50.0;
while (xStep * pan.XScale < 75)
{
xStep = xStep * 2;
}
while (xStep * pan.XScale > 150)
{
xStep = xStep / 2;
}
var val = xStep;
var cnt = 0;
if (val <= 0.0)
{
val = 1.0;
}
if (val < 1.0)
{
while (val < 1.0)
{
val *= 10;
cnt -= 1;
}
}
if (val > 10)
{
while (val > 10)
{
val = val / 10;
cnt += 1;
}
}
if (val > 5.001)
{
xStep = 5.0;
}
else if (val > 2.001)
{
xStep = 2.0;
}
else
{
xStep = 1.0;
}
if (cnt < 0)
{
cnt = Math.Abs(cnt);
for (var i = 0; i < cnt; i++)
{
xStep /= 10.0;
}
}
else
{
for (var i = 0; i < cnt; i++)
{
xStep *= 10.0;
}
}
var minValue = gs.MinD;
var maxValue = (gs.MaxD - minValue) / 10.0;
// ReSharper disable once CompareOfFloatsByEqualityOperator
if (maxValue == 0.0)
{
maxValue = 10.0;
}
var yStep = (pan.GPan.Height - 5) / 10.0;
while (yStep * pan.YScale < 50)
{
yStep = yStep * 2.0;
maxValue = maxValue * 2.0;
}
while (yStep * pan.YScale > 100)
{
yStep = yStep / 2.0;
maxValue = maxValue / 2.0;
}
val = maxValue;
cnt = 0;
if (val < 1.0 && val > 0.0)
{
while (val < 1.0)
{
val *= 10;
cnt -= 1;
}
}
while (val > 10)
{
val = val / 10;
cnt += 1;
}
if (val > 5.001)
{
val = 5.0;
}
else if (val > 2.001)
{
val = 2.0;
}
else
{
val = 1.0;
}
if (cnt < 0)
{
cnt = Math.Abs(cnt);
for (var i = 0; i < cnt; i++)
{
val /= 10.0;
}
}
else
{
for (var i = 0; i < cnt; i++)
{
val *= 10.0;
}
}
if (_stepOverride && xStep > 1)
{
xStep = 1;
}
if (_xStepOverride)
{
xStep = 1;
}
if (_stepOverride && val > 1)
{
val = 1;
}
var scl = val / maxValue;
maxValue = val;
yStep = yStep * scl;
try
{
DrawXGrid(pan, xStep);
yStep = yStep * pan.YScale;
DrawYGrid(pan, yStep, gs, minValue, maxValue);
}
// ReSharper disable once EmptyGeneralCatchClause
catch
{
}
}
