Requirement- Build an animated AreaChart with real time streaming data. Maybe plot 300 data points every 1 sec.
Details- So I need to read real time streaming data from a medical device, of a patient's breathing pattern and display it in a waveform fashion using AreaChart in JavaFX. I'm new to JavaFX and so I built a small POC, to see how concurrency and animation works in JavaFX.
The concept works and I'm happy with the basic test, as far as implementing the functionality. But I'm not happy with the performance I'm getting from the code below.
In the working code below, I create a separate thread to simulate data fetching from the medical device. The thread just generates a random number and adds it to a ConcurrentLinkedQueue.
The JavaFX Application thread pulls this data out from queue, via the Timeline, and adds it to an AreaChart Series.
This sort of gives me the animation I need and the data is being added in run time. You can copy-paste this code and test it..It should work.
BUT the performance is not impressive - CPU goes to 56% usage - I have a Intel Core 2 Duo @ 2.53 GHZ and 4GB ram on my laptop. My graphics card is Mobile Intel 4 Series express with latest driver.
How can I improve this animation or plotting of real time data, in order to get better performance?
NOTE: I'm willing to compromise on the animation, if its the bottle neck. I'm open to an implementation like shown here http://smoothiecharts.org/ where the waveform is just prebuilt and just streaming from right to left.
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.logging.Level;
import java.util.logging.Logger;
import javafx.animation.Animation;
import javafx.animation.KeyFrame;
import javafx.animation.SequentialTransition;
import javafx.animation.Ti