import controlP5.*;
import processing.serial.*;


ControlP5 cp5;
Serial port;

int myColorBackground = color(0,0,0);
int knobValue = 100;
int tempValue = 1;
Knob myKnobA;
Knob myKnobB;

String reading = "no reading yet";

void setup() {
  size(700,500);
  smooth();
  noStroke();
  
  cp5 = new ControlP5(this);
  
  println(Serial.list());
  String[] strs = Serial.list();
  port = new Serial(this, strs[1], 9600);
  
  myKnobA = cp5.addKnob("temp")
               .setRange(1800,2200)
               .setValue(1850)
               .setPosition(100,50)
               .setRadius(50)
               .setDragDirection(Knob.VERTICAL)
               ;
  
  

}

void draw() {
  background(myColorBackground);
  fill(255);


    String listen = port.readString();
    if (listen != null) {
      reading = listen;
    }
    println(reading);
    textSize(32);
    text(reading, 300, 100);
    
    pushMatrix();
    translate(200, 400);
    
    beginShape();
    noFill();
    stroke(255);
    for (int i = 500; i < 1400; i = i+1){
      curveVertex((i - 500)/3, -(-1.729 + 4560/(i - 240.8))*10);
    }
    endShape();
    
    beginShape();
    stroke(205, 100, 0);
    line(((tempValue-32)/1.8 - 500)/3, -(-1.729 + 4560/((tempValue-32)/1.8 - 240.8)*10 -40),((tempValue-32)/1.8 - 500)/3, -(-1.729 + 4560/((tempValue-32)/1.8 - 240.8)*10+ 10));
    endShape();
    
    for (int i = 0; i < 130; i = i + 20){
      textSize(9);
      text(i/10, -20,  - i - 30);
      stroke(255);
      line(-5, - i -33, 0, -i - 33);
    }
    
    rotate(-PI/2);
    textSize(12);
    text("log (viscosity)", 40, -25);
    popMatrix();



  
}


public void temp(int theValue) {
//  myColorBackground = color(theValue);
  port.write(theValue);
  tempValue = theValue;

}


public void SerialEvent(Serial myPort){
  String myString = myPort.readString();
  if (myString != null){
    println(myString);
  }
}
void keyPressed() {
  switch(key) {
    case('1'):myKnobA.setValue(180);break;
    case('2'):myKnobB.setConstrained(false).hideTickMarks().snapToTickMarks(false);break;
    case('3'):myKnobA.shuffle();myKnobB.shuffle();break;
  }
  
}