public void ReflashWave2Thread(object _tn)
{
string tn = (string)_tn;
int gap = 500;
DrawWave dw = new DrawWave(ref pictureBox2);
DataTable dttb = dtst.Tables[tn];
while (reflashWave2ThreadFlag)
{
lock (DrawWave.wavelock)
{
gap = wave2pram.timegap;
try
{
int num = dttb.Rows.Count;
num -= (dw.boxSize.X - 40) / 5 * gap;
UInt16[] data = new UInt16[(dw.boxSize.X - 40) / 5];
if (num >= 51)
{
for (int i = 0; i < (dw.boxSize.X - 40) / 5; i++)
{
//int average = 0;
//for (int j = 0; j < gap; j++)
//{
// average += (UInt16)dttb.Rows[num - 51 + i * gap + j]["DataValue"];
//}
//average = average / gap;
//data[i] = (UInt16)average;
data[i] = (UInt16)dttb.Rows[num - 1 + i * gap]["DataValue"];
}
dw.Wave(ref data, ref pictureBox2, 1, 1);
}
else
{
int num0 = dttb.Rows.Count / gap;
UInt16[] data0 = new UInt16[num0];
for (int i = 0; i < num0; i++)
{
data0[i] = (UInt16)dttb.Rows[i * gap]["DataValue"];
}
dw.Wave(ref data0, ref pictureBox2, 1, 1);
}
}
catch (Exception)
{
}
}
Thread.Sleep(100);
}
}
// select data point and draw wave
void SelectShowData(string tablename, ref PictureBox pictureBox, ref HScrollBar hScrollBar, ref TrackBar trackBar)
{
DrawWave dw = new DrawWave(ref pictureBox);
ushort[] data;
int gap; //x axis timegap
int datanum = (dw.boxSize.X - 40) / 5;
gap = timgap[trackBar.Value];
data = new ushort[datanum];
// set hScrollBar
hScrollBar.LargeChange = 50 * gap;
hScrollBar.SmallChange = 5 * gap;
hScrollBar.Maximum = ds.Tables[tablename].Rows.Count - (datanum + 1) * gap;
hScrollBar.Minimum = 0;
if (hScrollBar.Maximum < 0)
{
hScrollBar.Maximum = 0;
}
for (int i = 0; i < datanum; i++)
{
try
{
data[i] = (ushort)ds.Tables[tablename].Rows[i * gap + hScrollBar.Value][2];
}
catch (Exception)
{
break;
}
}
dw.ClearToBackcolor(ref pictureBox);
dw.DrawXaxis(ref pictureBox, 1, 5);
dw.DrawYaxis(ref pictureBox, 1, 5);
dw.Wave(ref data, ref pictureBox, 1, 1);
}
