//Rob Seward  
//20 Oct. 2004



//int numPixels = 400; 
int resolution = 5;
BImage img; 
int numPixels;


int redRange = 125; 
int blueRange = 125;
int greenRange = 125;

int rangeSwitch = 0;
boolean button = false; 
int mode = 0;

int[] aPixels; 
int direction = 1; 
boolean onetime = true; 
float signal; 

int sizeMult = 1;
 
void setup() 
{ 
  img = loadImage("cr.jpg"); 
  size(img.width*sizeMult, img.height*sizeMult); 
  
  aPixels = new int[img.width*img.height]; 
  framerate(30); 
  
  for(int i=0; i<img.width*img.height; i++) { 
    aPixels[i] = img.pixels[i]; 
  } 
 
  beginSerial(9600);
}

void loop() 
{ 
    
    if(button && mode == 0){
      mode = 1;
      button = false;
    }
    else if(button && mode == 1){
      mode = 0;
      button = false;
    }
    
    float rr, rg, rb;
    //convert pot values to appropriate random multipliers
    if(mode == 0){
       rr = random(1, getValue(redRange));
       rg = random(1, getValue(greenRange));
       rb = random(1, getValue(blueRange));
    }
    else{
       rr = getValue(redRange);
       rg = getValue(greenRange);
       rb = getValue(blueRange);
    }
      
   
    println("r = " + redRange + "  g = " + greenRange + "  b = " + blueRange);
    
    for(int i=0; i < img.width*img.height; i++){
        color pix = aPixels[i];
          img.pixels[i] = color(red(pix) * rr, green(pix) * rg, blue(pix) * rb);         
   }
   
  image(img,0,0, img.width * sizeMult, img.height * sizeMult ); 
  /*while(pauseProgram){
     delay(1000); 
  }*/
           
} 


void serialEvent() {
  int inByte = serial;
  
  if (inByte == 0){
    button = true;
    return;
  }else
    button = false;
    
  if (inByte == 1){
    rangeSwitch = 1;
  }
  else  if (inByte == 2){
    rangeSwitch = 2;
  }
  else if (inByte == 3){
    rangeSwitch = 3;
  }
  
  if(inByte == 4)
    inByte = 0;
  else if (rangeSwitch == 1)
    redRange = inByte;
  else if (rangeSwitch == 2)
    greenRange = inByte;
  else if (rangeSwitch == 3)
    blueRange = inByte;
 }

 
  
 float getValue(int input)
 {
      float output;
      if (input < 125){
        output = (float)input * (  (float)1 / (float)125 );
      }
      else{
           int temp = input - 125 + 8;
           output = (float)temp * ( (float)15 / (float)125 );
      }
      
     return output;
 }