// When the chart is filled with points, this procedure
// deletes and scrolls points to the left.
private void DoScrollPoints()
{
double tmp, tmpMin, tmpMax;
// Delete multiple points with a single call.
// Much faster than deleting points using a loop.
fastLine1.Delete(0, ScrollPoints);
fastLine2.Delete(0, ScrollPoints);
// Scroll horizontal bottom axis
tmp = fastLine1.XValues.Last;
tChart1.Axes.Bottom.SetMinMax(tmp - MaxPoints + ScrollPoints, tmp + ScrollPoints);
// Scroll vertical left axis
tmpMin = fastLine1.YValues.Minimum;
if (fastLine2.YValues.Minimum < tmpMin)
{
tmpMin = fastLine2.YValues.Minimum;
}
tmpMax = fastLine1.YValues.Maximum;
if (fastLine2.YValues.Maximum > tmpMax)
{
tmpMax = fastLine2.YValues.Maximum;
}
tChart1.Axes.Left.SetMinMax(tmpMin - tmpMin * 0.2, tmpMax + tmpMax * 0.2);
// Do chart repaint after deleting and scrolling
Application.DoEvents();
}
private void timer1_Tick(object sender, System.EventArgs e)
{
timer1.Enabled = false;
try
{
fastLine1.Delete(0);
Random r = new Random();
fastLine1.Add(fastLine1.XValues.Last + 1.0,
fastLine1.YValues.Last + r.Next(100) - 50);
fastLine2.CheckDataSource(); // <-- fill again the points
fastLine3.CheckDataSource(); // <-- fill again the points
}
finally { timer1.Enabled = true; }
}
private void updatePoints(GatePacket gatePacket, int boardIndex)
{
int sourceID = (int)gatePacket.head.id;
int curPosX = (int)gatePacket.tag.stampPos[0] + boardIndex * 20;
int port = (int)gatePacket.head.port;
int num = (int)gatePacket.tag.cellNum;
double tmpYValue, preYValue;
int index;
bool isFinded;
bool isGood;
if (points == null)
{
StackTrace st = new StackTrace(new StackFrame(true));
LogHelper.WriteLog("The class for stroging the points is null!", st);
return;
}
//Weather the boardIndex and sourceID are matched.
isFinded = matchConfig(boardIndex, port, sourceID);
if (!isFinded)
{
return;
}
if (gatePacket.tag.stampPos[0] == 0)
{
clear();
}
for (int i = 0; i < num; i++)
{
index = ft.XValues.IndexOf(curPosX);
tmpYValue = gatePacket.measureDate[i];
//A new point.
if (index < 0)
{
isGood = addPoint(curPosX, tmpYValue);
ft.Add(curPosX, tmpYValue);
points.addPoint(curPosX, tmpYValue, boardIndex, isGood);
}
//An old point, need to check.
else
{
preYValue = ft.YValues[index];
if (Math.Abs(tmpYValue) > Math.Abs(preYValue))
{
deletePoint(curPosX, preYValue);
ft.Delete(index);
isGood = addPoint(curPosX, tmpYValue);
ft.Add(curPosX, tmpYValue);
points.addPoint(curPosX, tmpYValue, boardIndex, isGood);
}
}
curPosX += (int)gatePacket.tag.stampInc[0];
maxAllowFt.Add(tchart.Axes.Bottom.MaxXValue, AscanMeasureMap.MaxSingleGateValue);
minAllowFt.Add(tchart.Axes.Bottom.MaxXValue, AscanMeasureMap.MinSingleGateValue);
}
}