package	rice2604hw;

/* ===============================================================
   2604                     KeyInstrument                   J.Rice
   ---------------------------------------------------------------
   A JMSL instrument file which acts as intermediary between a music
   applet and a Jsyn circuit.  This file is instantiated by the Key-
   PlayerApplet, creates a circuit, makes amplitude envelopes and 
   allows JMSL note data to get to the fundamental circuit.
   ---------------------------------------------------------------
   Edited 11/05/00
   ===============================================================   */

import   com.softsynth.jmsl.*;
import   com.softsynth.jsyn.*;

class	KeyInstrument extends Instrument {

   SawTriLFO      myOsc;
   LineOut        myOut;
	
   SynthEnvelope     ampEnvData;
   EnvelopePlayer    ampEnvPlayer;
	
   public KeyInstrument() {
	
      myOsc = new SawTriLFO();
      myOut = new LineOut();
		
      setParameters();
      ampEnvData = new SynthEnvelope(makeEnvelope2());
				
      ampEnvPlayer = new EnvelopePlayer();	
      ampEnvPlayer.output.connect(0, myOsc.amplitude, 0);
      myOsc.output0.connect(0, myOut.input, 0);
      myOsc.output1.connect(0, myOut.input, 1);
		
   }		
   //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   public void setParameters() {
   
   	double	vari;
		  
      myOsc.freqLFO.set(JMSLRandom.choose(10.0));
      myOsc.freqLFO2.set(JMSLRandom.choose(10.0));
		  		
      myOsc.ampLFO.set(JMSLRandom.choose(20));
      myOsc.ampLFO2.set(JMSLRandom.choose(20));
		  
      vari = (JMSLRandom.choose(2000)+50);
      myOsc.cutoff.set((int)vari);
		  				  
   }
   //-------------------------------------
   public double[] makeEnvelope2() {
		  
      double[] d = new double[8];
      double	x, y, z, dur;
		  		  		
      x = JMSLRandom.choose(2.0);	
      z = JMSLRandom.choose(2.0);
      d[0] = z;
      d[1] = .75; //down from .85, 11/05
      d[2] = x - z;
      d[3] = (JMSLRandom.choose(0.3) + 0.4);
      d[4] = x;
      d[5] = (JMSLRandom.choose(0.3) + 0.4);
      d[6] = x;
      d[7] = 0.0;
		  		
      dur = ((int)(x * 3000.0) / 1000.0);
      JMSL.out.print(" [envelope of dur: " + dur + "] ");
		  			
      return d;
		  
   }
   //--------------------------------------------------------
   public double open(double playTime) {
		
      int itime = (int)JMSL.clock.timeToNative(playTime);
      myOsc.start(itime);
      myOut.start(itime);
      ampEnvPlayer.start(itime);             			
      return playTime;			
   }
   //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   public double close(double playTime) {
		
      int itime = (int)JMSL.clock.timeToNative(playTime);
      myOsc.stop(itime);
      myOut.stop(itime);
      ampEnvPlayer.stop(itime);             			
      return playTime;			
   }
   //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   public double play(double playTime, double timeStretch, double dar[]) {
		
      int itime = (int)JMSL.clock.timeToNative(playTime);
      myOsc.frequency.set(itime, dar[1]);
      ampEnvPlayer.amplitude.set(itime, dar[2]);
      ampEnvPlayer.envelopePort.clear(itime);
     	ampEnvPlayer.envelopePort.queue(itime, ampEnvData, 0, ampEnvData.getNumFrames());

      return playTime + dar[0] * timeStretch;			
  }
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
}