mds.provider.MdsDataProviderAsync Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of jscope Show documentation

MDSplus data display program for waveforms, images and more.

There is a newer version: 7.139.60

/*
 * Extends MdsDataProvider to display an asynchronous waveform IN ADDITION to the waveform provided by the superclass
 * This is a template class.
 */
package mds.provider;

import java.util.Vector;

import mds.wave.WaveDataListener;

/**
 *
 * @author manduchi
 */
public class MdsDataProviderAsync extends MdsDataProvider
{
	// Inner class AsynchWaevdata handles the generation of the waveform
	class AsynchWaveData implements AsyncDataSource
	{
		double sinePeriod = 1;
		Vector listeners = new Vector<>();

		@Override
		public void addDataListener(WaveDataListener listener)
		{
			listeners.addElement(listener);
		}

		@Override
		public void startGeneration(String expression)
		{
			// JUST A SAMPLE SINE GENERATION...TO BE REPLACED BY REAL WAVEFORMS
			// JUST ASSUMED THAT THE PASSED EXPRESSION IS THE SINE PERIOD
			try
			{
				sinePeriod = Double.parseDouble(expression);
			}
			catch (final Exception exc)
			{}
			(new Thread()
			{
				@Override
				public void run()
				{
					for (int i = 0; i < 100; i++)
					{
						try
						{
							Thread.sleep(100);
						}
						catch (final InterruptedException exc)
						{}
						if (!asynchEnabled)
						{
							System.out.println("NOT ENABLED");
							continue;
						}
						final double x[] = new double[]
						{ i };
						final float y[] = new float[]
						{ (float) Math.sin(2 * Math.PI * sinePeriod * i / 100.) };
						for (int j = 0; j < listeners.size(); j++)
						{
							listeners.elementAt(j).dataRegionUpdated(x, y, Double.MAX_VALUE);
							listeners.elementAt(j).legendUpdated("CICCIO" + i);
						}
					}
				}
			}).start();
		}
	}

	boolean asynchEnabled = true;

	@Override
	public void enableAsyncUpdate(boolean asynchEnabled)
	{
		this.asynchEnabled = asynchEnabled;
	}

	@Override
	public AsyncDataSource getAsynchSource()
	{ return new AsynchWaveData(); }
}