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+/*
+ * Copyright 2010 Phil Burk, Mobileer Inc
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.jsyn.examples;
+
+import java.awt.BorderLayout;
+import java.awt.GridLayout;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.util.ArrayList;
+
+import javax.swing.ButtonGroup;
+import javax.swing.JApplet;
+import javax.swing.JLabel;
+import javax.swing.JPanel;
+import javax.swing.JRadioButton;
+
+import com.jsyn.JSyn;
+import com.jsyn.Synthesizer;
+import com.jsyn.scope.AudioScope;
+import com.jsyn.swing.JAppletFrame;
+import com.jsyn.swing.PortControllerFactory;
+import com.jsyn.unitgen.ImpulseOscillator;
+import com.jsyn.unitgen.ImpulseOscillatorBL;
+import com.jsyn.unitgen.LineOut;
+import com.jsyn.unitgen.LinearRamp;
+import com.jsyn.unitgen.Multiply;
+import com.jsyn.unitgen.PulseOscillator;
+import com.jsyn.unitgen.PulseOscillatorBL;
+import com.jsyn.unitgen.RedNoise;
+import com.jsyn.unitgen.SawtoothOscillator;
+import com.jsyn.unitgen.SawtoothOscillatorBL;
+import com.jsyn.unitgen.SawtoothOscillatorDPW;
+import com.jsyn.unitgen.SineOscillator;
+import com.jsyn.unitgen.SquareOscillator;
+import com.jsyn.unitgen.SquareOscillatorBL;
+import com.jsyn.unitgen.TriangleOscillator;
+import com.jsyn.unitgen.UnitOscillator;
+
+/**
+ * Display each oscillators waveform using the AudioScope. This is a reimplementation of the
+ * TJ_SeeOsc Applet from the old API.
+ * 
+ * @author Phil Burk (C) 2010 Mobileer Inc
+ */
+public class SeeOscillators extends JApplet {
+    private static final long serialVersionUID = -8315903842197137926L;
+    private Synthesizer synth;
+    private ArrayList<UnitOscillator> oscillators = new ArrayList<UnitOscillator>();
+    private LineOut lineOut;
+    private AudioScope scope;
+    private JPanel oscPanel;
+    private Multiply oscGain;
+    private ButtonGroup buttonGroup;
+    private LinearRamp freqRamp;
+
+    /* Can be run as either an application or as an applet. */
+    public static void main(String args[]) {
+        SeeOscillators applet = new SeeOscillators();
+        JAppletFrame frame = new JAppletFrame("ShowWaves", applet);
+        frame.setSize(640, 500);
+        frame.setVisible(true);
+        frame.test();
+        frame.validate();
+    }
+
+    private void setupGUI() {
+        setLayout(new BorderLayout());
+
+        add(BorderLayout.NORTH, new JLabel("Show Oscillators in an AudioScope"));
+
+        scope = new AudioScope(synth);
+        scope.addProbe(oscGain.output);
+        scope.setTriggerMode(AudioScope.TriggerMode.NORMAL);
+        // scope.getModel().getTriggerModel().getLevelModel().setDoubleValue( 0.0001 );
+        // Turn off the gain and trigger control GUI.
+        scope.getView().setShowControls(false);
+        scope.start();
+        add(BorderLayout.CENTER, scope.getView());
+
+        JPanel southPanel = new JPanel();
+        southPanel.setLayout(new GridLayout(0, 1));
+        add(BorderLayout.SOUTH, southPanel);
+
+        oscPanel = new JPanel();
+        oscPanel.setLayout(new GridLayout(2, 5));
+        southPanel.add(oscPanel);
+
+        southPanel.add(PortControllerFactory.createExponentialPortSlider(freqRamp.input));
+        southPanel.add(PortControllerFactory.createExponentialPortSlider(oscGain.inputB));
+
+        oscPanel.validate();
+        validate();
+    }
+
+    @Override
+    public void start() {
+        synth = JSyn.createSynthesizer();
+
+        // Use a multiplier for gain control and so we can hook up to the scope
+        // from a single unit.
+        synth.add(oscGain = new Multiply());
+        oscGain.inputB.setup(0.02, 0.5, 1.0);
+        oscGain.inputB.setName("Amplitude");
+
+        synth.add(freqRamp = new LinearRamp());
+        freqRamp.input.setup(50.0, 300.0, 20000.0);
+        freqRamp.input.setName("Frequency");
+        freqRamp.time.set(0.1);
+
+        // Add an output so we can hear the oscillators.
+        synth.add(lineOut = new LineOut());
+
+        oscGain.output.connect(lineOut.input);
+
+        setupGUI();
+
+        buttonGroup = new ButtonGroup();
+
+        addOscillator(new SineOscillator(), "Sine");
+        addOscillator(new TriangleOscillator(), "Triangle");
+        addOscillator(new SawtoothOscillator(), "Sawtooth");
+        addOscillator(new SawtoothOscillatorBL(), "SawBL");
+        addOscillator(new SawtoothOscillatorDPW(), "SawDPW");
+        addOscillator(new RedNoise(), "RedNoise");
+
+        addOscillator(new SquareOscillator(), "Square");
+        addOscillator(new SquareOscillatorBL(), "SquareBL");
+        addOscillator(new PulseOscillator(), "Pulse");
+        addOscillator(new PulseOscillatorBL(), "PulseBL");
+        addOscillator(new ImpulseOscillator(), "Impulse");
+        addOscillator(new ImpulseOscillatorBL(), "ImpulseBL");
+
+        // Start synthesizer using default stereo output at 44100 Hz.
+        synth.start();
+        // Start lineOut so it can pull data from other units.
+        lineOut.start();
+
+        // We only need to start the LineOut. It will pull data from the
+        // oscillator.
+        lineOut.start();
+
+    }
+
+    private void addOscillator(final UnitOscillator osc, String label) {
+        oscillators.add(osc);
+        synth.add(osc);
+        freqRamp.output.connect(osc.frequency);
+        osc.amplitude.set(1.0);
+        JRadioButton checkBox = new JRadioButton(label);
+        buttonGroup.add(checkBox);
+        checkBox.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent arg0) {
+                // Disconnect other oscillators.
+                oscGain.inputA.disconnectAll(0);
+                // Connect this one.
+                osc.output.connect(oscGain.inputA);
+            }
+        });
+        oscPanel.add(checkBox);
+    }
+
+    @Override
+    public void stop() {
+        scope.stop();
+        synth.stop();
+    }
+
+}