private void DrawGraph(Graphics g, Pen p, DataBlock db, int channel)
{
float yy = 0;
float xx = 0;
int i = 0;
int i0 = (int)Math.Floor( lerp(0, db.GetChannelLength(), 0, db.GetTotalTime(), MinXD) );
int i1 = (int)Math.Ceiling( lerp(0, db.GetChannelLength(), 0, db.GetTotalTime(), MaxXD) )+1;
if (i1 > db.GetChannelLength())
{
i1 = db.GetChannelLength();
}
if (db.m_Annotations != null)
{
for (int an = 0; an < db.m_Annotations.Length; an++)
{
float time = db.GetTime(db.m_Annotations[an]);
float x = ValueXToRect(time);
g.DrawLine(Pens.Green, x, 0, x, ValueYToRect(5));
}
}
try
{
for (i = i0; i < i1; i++)
{
int rawvolt = db.GetVoltage(channel, i);
float time = db.GetTime(i);
float x = ValueXToRect(time);
float y = ValueYToRect(rawvolt);
if (i > 0)
{
g.DrawLine(p, xx, yy, x, y);
if (showValueTicks)
{
g.DrawLine(p, x, y-2, x, y+2);
g.DrawLine(p, x - 2, y, x + 2, y);
}
}
yy = y;
xx = x;
}
}
catch
{
#if DEBUG
Console.WriteLine("{0} {1} {2}", db, m_Bounds, i);
#endif
}
//Cursor.Hide();
if (m_mouse != null)
{
DrawCross(g, Pens.Blue, m_mouse.X, m_mouse.Y);
}
{
float t = (db.m_triggerPos * db.GetTotalTime()) / (float)db.GetChannelLength();
float x = ValueXToRect(t);
g.DrawLine(Pens.Green, x, m_Bounds.Y, x, m_Bounds.Y + m_Bounds.Height);
}
Point pp = new Point();
pp.X = 0;
pp.Y = 32;
if (m_mouse != null)
{
float time = RectToValueX(m_mouse.X);
float voltage = RectToValueY(m_mouse.Y);
float voltageI = (voltage > 255 ? 255 : (voltage < 0 ? 0 : (int)voltage));
float voltageV = voltageI * 5 / 255;
string info = string.Format("{0} ({1}, {2}/255, {3:0.###}v)", db.m_sample, ToEngineeringNotation(time), (int)voltageI, voltageV);
g.DrawString(info, parent.Font, Brushes.White, pp);
pp.Y += 16;
info = string.Format("({0}s/div, {1}Ks/s)", ToEngineeringNotation(DivX), db.m_sampleRate / 1000);
g.DrawString(info, parent.Font, Brushes.White, pp);
pp.Y += 16;
}
if (Selected())
{
if ((m_selectT0 < db.GetTotalTime()) && (m_selectT1 < db.GetTotalTime()))
{
g.DrawString(string.Format("({0}, {1}) - ({2}, {3})", ToEngineeringNotation(m_selectT0), db.GetVoltage(0, m_selectT0), ToEngineeringNotation(m_selectT1), db.GetVoltage(0, m_selectT1)), parent.Font, Brushes.White, pp);
pp.Y += 16;
g.DrawString(string.Format("ΔVoltage = {0}", db.GetVoltage(0, m_selectT1) - db.GetVoltage(0, m_selectT0)), parent.Font, Brushes.White, pp);
pp.Y += 16;
}
string time = string.Format("ΔTime = {0}", ToEngineeringNotation(m_selectT1 - m_selectT0));
if (m_selectT1 - m_selectT0 > 0)
{
time += string.Format(", {0} Hz", (int)(1.0f / (m_selectT1 - m_selectT0)));
}
g.DrawString(time, parent.Font, Brushes.White, pp);
pp.Y += 16;
}
}
