!7

lib 1400104 // XChart

import org.knowm.xchart.*;

sclass XChartRealTimeTest > DynModule {

  transient double phase = 0;

  JComponent visualize() {

    double[][] initdata = getSineData(phase);

    // Create Chart

    final XYChart chart = QuickChart.getChart("Simple XChart Real-time Demo", "Radians", "Sine", "sine", initdata[0], initdata[1]);

    final JComponent panel = new XChartPanel(chart);

    awtEvery(panel, 200, r {

      phase += 2 * Math.PI * 2 / 20.0;

      double[][] data = getSineData(phase);

      chart.updateXYSeries("sine", data[0], data[1], null);

      revalidate(panel);

    });

    ret panel;

  }

  double[][] getSineData(double phase) {

    double[] xData = new double[100];

    double[] yData = new double[100];

    for i over xData: {

      double radians = phase + (2 * Math.PI / xData.length * i);

      xData[i] = radians;

      yData[i] = Math.sin(radians);

    }

    ret new double[][] { xData, yData };

  }

}