Steema Central

Code: Select all

uses series;

procedure TForm1.FormCreate(Sender: TObject);
begin
  with Chart1.AddSeries(TLineSeries) do
    FillSampleValues();

  Chart1.CopyToClipboardMetafile(false);
end;

Code: Select all

            public Form1()
            {
                  InitializeComponent();
                  InitializeChart();
            }

            int nrOfSamples = 10000;
            private Steema.TeeChart.Styles.FastLine fastline1;
            private Steema.TeeChart.Styles.FastLine fastline2;
            private System.Diagnostics.Stopwatch stopWatch;

            private void InitializeChart()
            {
                  stopWatch = new System.Diagnostics.Stopwatch();
 
                  tChart1.Aspect.View3D = false;
                  tChart1.Aspect.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighSpeed;
 
                  fastline1 = new Steema.TeeChart.Styles.FastLine(tChart1.Chart);
                  fastline2 = new Steema.TeeChart.Styles.FastLine(tChart1.Chart);
 
                  //pre-assign ChartPens
                  Pen rPen = new Pen(Color.Red);
                  Pen bPen = new Pen(Color.Blue);
                  Steema.TeeChart.Drawing.ChartPen redPen = new Steema.TeeChart.Drawing.ChartPen(tChart1.Chart, rPen);
                  Steema.TeeChart.Drawing.ChartPen bluePen = new Steema.TeeChart.Drawing.ChartPen(tChart1.Chart, bPen);
                  fastline1.LinePen = redPen;
                  fastline2.LinePen = bluePen;
 
                  fastline1.FillSampleValues(nrOfSamples);
                  fastline2.FillSampleValues(nrOfSamples / 2);
 
                  //tChart1.Axes.Left.SetMinMax(-5.0, 5.0);
 
                  tChart1.AfterDraw += new Steema.TeeChart.PaintChartEventHandler(tChart1_AfterDraw);
            }
 
            void tChart1_AfterDraw(object sender, Steema.TeeChart.Drawing.Graphics3D g)
            {
                  //calculate elapsed time
                  //stopWatch.Stop();
                  TimeSpan elapsedTime = stopWatch.Elapsed;
                  string total = elapsedTime.TotalSeconds.ToString();
                  label1.Text = "Elapsed time: " + total + " s";
            }
 
            private void button1_Click(object sender, EventArgs e)
            {
                  button1.Enabled = false;
 
                  stopWatch.Reset();
                  stopWatch.Start();
 
                  tChart1.AutoRepaint = false;
 
                  double[] x1 = new double[nrOfSamples];
                  for (int i = 0; i < x1.Length; i++)
                  {
                        x1[i] = i;
                  }
                  double[] x2 = new double[nrOfSamples / 2];
                  for (int i = 0; i < x2.Length; i++)
                  {
                        x2[i] = i;
                  }
                  double[] random1 = new double[nrOfSamples];
                  double[] random2 = new double[nrOfSamples / 2];                             
 
                  for (int i = 0; i < 100; i++)
                  {
                        FillArray(random1);
                        FillArray(random2);
                        fastline1.Add(x1, random1);
                        fastline2.Add(x2, random2);
                        tChart1.AutoRepaint = true;
                        //tChart1.Refresh();
                        Application.DoEvents();
                  }
 
                  stopWatch.Stop();
 
                  button1.Enabled = true;
            }

            private static void FillArray(double[] myArray)
            {
                  Random y = new Random();
                  for (int i = 0; i < myArray.Length; i++)
                  {
                        myArray[i] = y.Next();
                  }
            }