serialManager.pde

import processing.serial.*;


class SerialManager {

  Serial port;
  String incomingMessage = "";                     // message recieved on serial port
  int nSerialInputs;
  int NFIELDS = 6;                                 // Number of fields in incomingMessage

  // Serial protocal exampe: if incomiing message (e.g., produced by Arduino 
  // sketch SerialReportor) is "S,4,5,6", then NFIELDS = 3.  The leading "S"
  // is htere to confirm that the data is valid.


  // Serial data
  float colorAngle1, colorAngle2, particleSize, speedRead;  // Analogue: values in range 0..1023.
  int switchA, switchB, switchC;  // Digital.  Values are 0 and 1' 

  SerialManager (Serial port_, int nSerialInputs_) {

    nSerialInputs = nSerialInputs_;

    port = port_;
    port.bufferUntil('\n');
  }

  void parseSerialData() {

    println(incomingMessage);
    String value[] = incomingMessage.split(",");


    // Example of data format for serial data (a string):
    // "S,123.4,8,9"
    // In this case nFields = 3
    // The first field is "S".  Its presence confirms
    // the validity of the string received.


    // Get digital inputs:
    switchA = int(value[4]);
    switchB = int(value[5]);
    switchC = int(value[6]);

    if (value.length == nSerialInputs + 1) { 

      if (switchA == 1) // Manage bank 1 -- colors
      {
        controller.c1 = convertReading2color(value[1]);
        controller.c2 = convertReading2color(value[2]);
      } 
      else  // Manage bank 0 -- speed, size, 
      {
        particleSize = float(value[1]);
        speedRead = float(value[2]);

        particleSize = map(particleSize, 0, 1023, 1, 300);
        speedRead = map(speedRead, 0, 1023, 1, 300);
      }
    }
  }

  void handleInput() {

    if (serialManager.incomingMessage.length() > 0) 
    {
      if (serialManager.incomingMessage.charAt(0) == 'S') 
      {
        serialManager.parseSerialData();
        serialManager.reactToData();
      }
    }

    // report();
  }

  void reactToData () 
  {         

    colorMode(HSB, 360, 1, 1);   
    // color c = color(colorAngle1, 1, 1);
    // message = "angle = "+colorAngle1+"speed = "+speedRead +"    A = "+ switchA+" B = "+switchB+" C = "+switchC;      
    colorMode(RGB, 255, 255, 255, 255);


    if (switchA == 1)  // Bank 1 --- manage colors
    {
      controller.updateColorBoxes();
      frameSet.setColorTori2();
    } 
    else 
    {
      if (particleSize > 0) {
        frameSet.maxRadius = particleSize;
      }   
      if (speedRead > 0) {
        responder.manageFrameRate(speedRead);
      }
    }
  }


  // Read data on serial port one line at a time
  // and post it to the string variable incomingMessage.
  // In draw (), handleSerialInput() will process
  // incomingMessage:  

  void serialEvent(Serial port) {
    incomingMessage = port.readStringUntil('\n');
    incomingMessage = incomingMessage.trim();
    // println(incomingMessage);
  }

  float convertReading(String input, float MAX) {

    return map(float(input), 0, 1023, 0, MAX);
  }

  color convertReading2color(String input) {

    float hue  = map(float(input), 0, 1023, 0, 360);
    colorMode(HSB, 360, 1, 1);
    return color(hue, 1, 1);
  }

  void report () {

    if (switchA == 1) {

      println("A: ON");
    } 
    else {

      println("A: OFF");
    }
  }
}