//private void ClonePoints(Point[]
private void NewDrawLines(Graphics GS, Pen GPen, OpenMedIC.Samples GPoints, long FirstAbsIndex, int StartPoint, int EndPoint)
{
//Clear the X columns that we'll be drawing over
GS.FillRectangle(wfBGBrush, PixelFromAbsIndex(FirstAbsIndex + StartPoint), 0, PixelFromAbsIndex(FirstAbsIndex + EndPoint) - PixelFromAbsIndex(FirstAbsIndex + StartPoint), pnlGraphingDisplay.Height);
for (int i = StartPoint; i != EndPoint; i++)
{
GS.DrawLine(GPen,
PixelFromAbsIndex(FirstAbsIndex + i),
PixelFromYVal(GPoints[i].sampleValue),
PixelFromAbsIndex(FirstAbsIndex + i + 1),
PixelFromYVal(GPoints[i + 1].sampleValue));
}
if (EndPoint < (GPoints.size - 1))
{
//Clear the X columns that we'll be drawing over
GS.FillRectangle(wfBGBrush, PixelFromAbsIndex(FirstAbsIndex + EndPoint), 0,
PixelFromAbsIndex(FirstAbsIndex + EndPoint + 1) + pnlGraphingDisplay.Width, pnlGraphingDisplay.Height);
//we're going to wrap to beginning of GS
//so draw another line segment to the next offscreen point
GS.DrawLine(GPen,
PixelFromAbsIndex(FirstAbsIndex + EndPoint),
PixelFromYVal(GPoints[EndPoint].sampleValue),
PixelFromAbsIndex(FirstAbsIndex + EndPoint + 1) + pnlGraphingDisplay.Width,
PixelFromYVal(GPoints[EndPoint + 1].sampleValue));
}
}
private void NewGraphPoints(long StartIndex, OpenMedIC.Samples InSamples)
{
Point PixelToDraw = new Point();
//Graphics GS = pnlGraphingDisplay.CreateGraphics();
for (int i = 0; i != InSamples.size; i++)
{
PixelToDraw.X = PixelFromAbsIndex(StartIndex + i);
PixelToDraw.Y = PixelFromYVal(InSamples[i].sampleValue);
if ((PixelToDraw.X != LatestPixelDisplayed.X) || (PixelToDraw.Y != LatestPixelDisplayed.Y))
{
//if we're moving to a new x column, we need to clear waveform
if (PixelToDraw.X > LatestPixelDisplayed.X)
{
OffscreenDC.FillRectangle(wfBGBrush,
LatestPixelDisplayed.X + 1, 0,
PixelToDraw.X - LatestPixelDisplayed.X, pnlGraphingDisplay.Height);
}
if (PixelToDraw.X >= LatestPixelDisplayed.X)
{
//test for the first time we're plotting the point
//if it is the first time, then the LatestPixelDisplayed.Y
//is a dummy, so simply skip it
if (LatestPixelDisplayed.Y > -1)
{
//draw the segment
OffscreenDC.DrawLine(wfPen,
LatestPixelDisplayed.X,
LatestPixelDisplayed.Y,
PixelToDraw.X,
PixelToDraw.Y);
}
}
else
{
//we should wrap back to the beginning of the graph
//clear the space to the end
OffscreenDC.FillRectangle(wfBGBrush,
LatestPixelDisplayed.X, 0,
(pnlGraphingDisplay.Width - LatestPixelDisplayed.X), pnlGraphingDisplay.Height);
//draw the line segment that goes off of the screen
OffscreenDC.DrawLine(wfPen,
LatestPixelDisplayed.X,
LatestPixelDisplayed.Y,
PixelToDraw.X + pnlGraphingDisplay.Width,
PixelToDraw.Y);
//clear the space at the start
OffscreenDC.FillRectangle(wfBGBrush,
0, 0,
PixelToDraw.X + 1, pnlGraphingDisplay.Height);
//draw the line segment that starts off of the screen
OffscreenDC.DrawLine(wfPen,
LatestPixelDisplayed.X - pnlGraphingDisplay.Width,
LatestPixelDisplayed.Y,
PixelToDraw.X,
PixelToDraw.Y);
}
//lastAbsIndexDisplayed = PixelFromAbsIndex(StartIndex + InSamples.size);
LatestPixelDisplayed.X = PixelToDraw.X;
LatestPixelDisplayed.Y = PixelToDraw.Y;
}
lastAbsIndexDisplayed = StartIndex + InSamples.size;
}
//finally, draw the cursor
OffscreenDC.DrawLine(cursPen, LatestPixelDisplayed.X + 1, 0, LatestPixelDisplayed.X + 1, pnlGraphingDisplay.Height);
OffscreenDC.FillRectangle(wfBGBrush, LatestPixelDisplayed.X + 2, 0, cursForeWidth, pnlGraphingDisplay.Height);
//now bitblt to the Display
Graphics GS = pnlGraphingDisplay.CreateGraphics();
GS.DrawImage(OffscreenBitmap, 0, 0);
}
