/// <summary>
/// 画轨迹
/// </summary>
public void DrawTrack(Point targetPoint)
{
if (this.InvokeRequired)
{
DrawTrackDelegate d = new DrawTrackDelegate(DrawTrack);
this.BeginInvoke(d, new object[] { targetPoint });
}
else
{
if (lastPoint == null)
{
lastPoint = targetPoint;
return;
}
graphics.DrawLine(new Pen(penColor, penWidth), (Point)lastPoint, targetPoint);
lastPoint = targetPoint;
}
}
/// <summary>
/// 画轨迹
/// </summary>
public void DrawTrack(Point targetPoint)
{
if (this.InvokeRequired)
{
DrawTrackDelegate d = new DrawTrackDelegate(DrawTrack);
this.BeginInvoke(d, new object[] { targetPoint });
}
else
{
if (pointCount < 3)
{
this.BringToFront();
pointCount++;
lastPoint = targetPoint;
return;
}
graphics.DrawLine(new Pen(penColor, penWidth), lastPoint, targetPoint);
lastPoint = targetPoint;
}
}
