public override void Paint(Graphics gr)
{
if (PlotterControl == null)
{
throw new InvalidOperationException("PlotterControl is null");
}
if (_function == null)
{
return;
}
int clientWidth = PlotterControl.ClientRectangle.Width;
if (_linesToDraw == null ||
_linesToDraw.Length != PlotterControl.ClientRectangle.Width)
{
_linesToDraw = new Point[PlotterControl.ClientRectangle.Width];
}
for (int screenX = 0; screenX < clientWidth; screenX++)
{
double spaceX = PlotterControl.ScreenX2SpaceX(screenX);
double spaceY = _function(spaceX);
int screenY = PlotterControl.SpaceY2ScreenY(spaceY);
_linesToDraw[screenX] = new Point(screenX, screenY);
}
using (Pen pen = new Pen(ForeColor, LineWidth))
{
pen.LineJoin = System.Drawing.Drawing2D.LineJoin.Round;
gr.DrawLines(pen, _linesToDraw);
}
}
public override void Paint(System.Drawing.Graphics gr)
{
if (PlotterControl == null)
{
throw new InvalidOperationException("PlotterControl is null");
}
if (_buffer.Count < 2)
{
return;
}
int linesCount = 0;
switch (_stepLengthMode)
{
case LengthMode.Space:
linesCount = (int)Math.Ceiling(
PlotterControl.VisibleRectangle.Width / _stepLength) + 1;
break;
case LengthMode.Screen:
linesCount = (int)Math.Ceiling(
PlotterControl.ClientRectangle.Width / _stepLength) + 1;
break;
}
if (linesCount > _buffer.Count)
{
linesCount = _buffer.Count;
}
using (Pen pen = new Pen(ForeColor, LineWidth))
{
pen.LineJoin = System.Drawing.Drawing2D.LineJoin.Round;
if (_linesToDraw == null || _linesToDraw.Length != linesCount)
{
_linesToDraw = new Point[linesCount];
}
float vRectRight = PlotterControl.VisibleRectangle.Right;
int cRectWidth = PlotterControl.ClientRectangle.Width;
for (int i = 0, bufElem = _buffer.Count - 1;
i < linesCount && bufElem >= 0;
i++, bufElem--)
{
Point chartPoint = Point.Empty;
switch (_stepLengthMode)
{
case LengthMode.Space:
chartPoint =
PlotterControl.Space2Screen(
new PointF(vRectRight - i * _stepLength,
_buffer[bufElem]));
break;
case LengthMode.Screen:
chartPoint = new Point(
(int)(cRectWidth - i * _stepLength),
PlotterControl.SpaceY2ScreenY(_buffer[bufElem]));
break;
}
_linesToDraw[i] =
LimitPoint(chartPoint);
}
gr.DrawLines(pen, _linesToDraw);
}
}
