Synchronize on threads on wait/notify

[kaka/cakelight.git] / src / kaka / cakelight / mode / AmbientMode.java

package kaka.cakelight.mode;

import kaka.cakelight.Color;
import kaka.cakelight.Configuration;
import kaka.cakelight.LedFrame;
import kaka.cakelight.util.SimplexNoise3D;

public class AmbientMode extends Mode { // TODO split into DynamicAmbient and StaticAmbient?
    private Thread thread; // TODO move to a dynamic sub class
    protected Configuration config;
    private int type = 0;
    private boolean isPaused = false;

    AmbientMode() {}

    public AmbientMode(String[] args) {
        if (args.length > 0) {
            type = Integer.parseInt(args[0]);
        }
    }

    @Override
    public void enter(Configuration config) {
        this.config = config;
        startThread();
    }

    @Override
    public void pause() {
        isPaused = true;
    }

    @Override
    public void resume() {
        isPaused = false;
	synchronized (thread) {
	    thread.notify();
	}
    }

    @Override
    public void exit() {
        stopThread();
    }

    private void startThread() {
        thread = new Thread() {
            public void run() {
                try {
                    long start = System.currentTimeMillis();
                    int index = 0;
                    while (!isInterrupted()) {
                        if (isPaused) {
			    synchronized (thread) {
				wait();
			    }
                        }
                        LedFrame frame = LedFrame.from(config);
                        updateFrame(frame, System.currentTimeMillis() - start, index);
                        updateWithFrame(frame);
                        index = (index + 1) % config.leds.getCount();
                        Thread.sleep(20);
                    }
                } catch (InterruptedException e) {
                    // e.printStackTrace();
                }
            }
        };
        thread.start();
    }

    private void stopThread() {
        thread.interrupt();
    }

    /**
     * @param frame
     * @param time  Time in milliseconds since start
     * @param count Goes from 0 to number of LEDs - 1
     */
    protected void updateFrame(LedFrame frame, long time, int count) {
        if (type == 0) {
            for (int i = 0; i < config.leds.getCount(); i++) {
                double r = Math.sin(2 * i * Math.PI / config.leds.getCount() + time * 0.001) * 0.5 + 0.5;
                double g = Math.cos(2 * i * Math.PI / config.leds.getCount() + time * 0.002) * 0.5 + 0.5;
                frame.setLedColor(i, Color.rgb(r, g, 0));
            }
        } else if (type == 1) {
            for (int i = 0; i < config.leds.getCount(); i++) {
                double x = frame.xOf(i);
                double y = frame.yOf(i);
                double b = Math.pow(Math.min(1, Math.max(0, noise.getr(0.0, 1.0, 1, x, y, time / 7000.0))), 1.5);
                double g = Math.min(1, Math.max(0, noise.getr(-b, b, 0.5, x*3, y*3, time / 5000.0)));
                frame.setLedColor(i, Color.rgb(0, g, b));
            }
        } else if (type == 2) {
            int ledCount = config.leds.getCount();
            double hueOffset = time * 0.00001;
            double hueLength = 1.0 / 6;
            for (int i = 0; i < config.leds.getCount(); i++) {
                double ledOffset = (i + (hueOffset * ledCount)) % ledCount;
                double value = Math.abs((ledOffset * 2 - ledCount) / ledCount); // 1 to 0 to 1
                frame.setLedColor(i, Color.hsv(value * hueLength + hueOffset, 1, 1));
            }
        } else if (type == 3) {
            for (int i = 0; i < config.leds.getCount(); i++) {
                double x = frame.xOf(i);
                double y = frame.yOf(i);
                double g = Math.pow(Math.min(1, Math.max(0, noise.getr(0.0, 1.0, 1, x, y, time / 7000.0))), 1.5);
                frame.setLedColor(i, Color.rgb(0, g, 1 - g * 0.5));
            }
        } else if (type == 4) {
            for (int i = 0; i < config.leds.getCount(); i++) {
                double x = frame.xOf(i);
                double y = frame.yOf(i);
                double g = Math.pow(Math.min(1, Math.max(0, noise.getr(0.0, 1.0, 1, x, y, time / 7000.0))), 1.5);
                frame.setLedColor(i, Color.rgb(1, g, 0));
            }
        } else if (type == 5) {
            for (int i = 0; i < config.leds.getCount(); i++) {
                double x = frame.xOf(i);
                double y = frame.yOf(i);
                double hue = (Math.min(1, Math.max(0, noise.getr(0.0, 1.0, 4, x, y, time / 7000.0))) + (time / 100000.0)) % 1.0;
                frame.setLedColor(i, Color.hsv(hue, 1, 1));
            }
        }
    }

    private SimplexNoise3D noise = new SimplexNoise3D(0);
}