Steema Central

Code: Select all

		// number of points we'll be displaying
		const int maxpoints = 500000;

		private void button1_Click(object sender, EventArgs e)
		{
			double[] myX = new double[maxpoints];
			double[] myY = new double[maxpoints];

			System.Random r = new System.Random();
			double tmp = r.NextDouble() * 10000;
			for (int t = 0; t < maxpoints; t++)
			{
				tmp += r.Next(100) - 49.5;
				myX[t] = t;
				myY[t] = tmp;
			}

			// now add points to series  			
			points1.Add(myX, myY);
		}

		private void Form1_Load(object sender, EventArgs e)
		{
			// Prepare chart for maximum speed:
			tChart1.Aspect.ClipPoints = false;
			tChart1.Header.Visible = false;
			tChart1.Legend.Visible = false;
			tChart1.Axes.Left.AxisPen.Width = 1;
			tChart1.Axes.Bottom.AxisPen.Width = 1;
			tChart1.Axes.Bottom.Labels.RoundFirstLabel = false;
			tChart1.Aspect.View3D = false;
			tChart1.Aspect.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighSpeed;
			tChart1.Panel.Gradient.Visible = false;
			//tChart1.Walls.Back.Gradient.Visible = false;
			tChart1.Walls.Back.Visible = false;

			// set ordering to none, to increment speed when adding points
			points1.XValues.Order = Steema.TeeChart.Styles.ValueListOrder.None;

			// initialize axis scales
			tChart1.Axes.Bottom.SetMinMax(1, maxpoints);

			points1.Pointer.Style = Steema.TeeChart.Styles.PointerStyles.SmallDot;
		}

		private long startTime, now;

		private void tChart1_BeforeDraw(object sender, Steema.TeeChart.Drawing.Graphics3D g)
		{
			startTime = DateTime.Now.Ticks;	
		}

		private void tChart1_AfterDraw(object sender, Steema.TeeChart.Drawing.Graphics3D g)
		{
			//calculate elapsed time
			now = DateTime.Now.Ticks;
			TimeSpan elapsedTime = new TimeSpan(now - startTime);

			label1.Text = "Elapsed time: " + elapsedTime.TotalMilliseconds.ToString() + " ms";
		}