/* Matt Martell
   IAT 800 - Dr. Christopher Shaw
   Due Oct. 20, 2008
   Project 2 - Scatter Plot Graph
*/   

void setup ()
{
    size (575,575);
    

   
    background (255,255,255);

// Draw gridlines at half way marks and to frame
    
    strokeWeight (3);
    stroke ( 0, 0, 0);
    line (wAlt*1/2+m,0,wAlt*1/2+m,hAlt);
    line (m,hAlt*1/2,wAlt+m,hAlt*1/2);
    
    stroke (192,192,192);
    line(m,0,m,hAlt);
    line(m,hAlt,wAlt+m,hAlt);

//Print the text descriptors

    PFont font;
    font = loadFont("Graph.vlw");
    textFont(font);
    fill(0, 102, 153, 51);
    text("50", 45, hAlt*1/2+6);
    text("50", wAlt*1/2+m-7, hAlt+25);
    text("0", m-12, hAlt+20);
    fill(0, 102, 153, 85);
    text("rater X", wAlt*1/2+m-20, hAlt+45);
    rotate (-PI*1/2);
    text("rater Y", -275, hAlt*1/12);
   
}




//Variables

// Define Averages to set bottom 25%, middle 50%, top 25%
// Numbers comes from original excel file using rank cut off's
    float btmAvgX = .45;
    float btmAvgY = .40;
    float topAvgX = .65;
    float topAvgY = .65;

// Definintion of variables to turn bottom, middle, top into boundary points
    float btmX;
    float btmY;
    float topX;
    float topY;

// Color definitions
    color btmZone = color(255,0,0,50);   // lower percentage (red)
    color midZone = color(255,204,0,30); // middle percentage (yellow)
    color topZone = color(0,255,0,25);   // upper percentage (green)
    color btm = color (255,0,0);         // red
    color mid = color(255,204,0);        // yellow
    color top = color (0,255,0);         // green  

// Define Variables for use in calling data from text file

  
    int n = 132; // n = number of lines in text file 
    float  xArr[] = new float[n] ;
    float  yArr[] = new float[n] ;
    float  colorArr[] = new float[n] ; // 1 = top, 2 = mid, 3 = btm
    
// Define size of program area   
    int m = 75; // size of margin for text and reference points
    int wAlt = 500; //width of graph
    int hAlt = 500; //height of graph
    int a = hAlt+m;
    int b = wAlt+m;

void draw ()
{
//Function to turn percentage into boundary points "m" adjusts for margin
    btmX = btmAvgX*wAlt+m;
    btmY = btmAvgY*hAlt-m;
    topX = topAvgX*wAlt+m;
    topY = topAvgY*hAlt-m;
  
// Draw the boxes for zones of agreement
    stroke ( 40, 50, 200,5 );   
    fill (btmZone);
    rect (m,hAlt-btmY-m, btmX-m,btmY+m);
 
    fill (midZone);
    rect (btmX,hAlt-topY-m,topX-btmX,topY-btmY);

    fill (topZone);
    rect(topX,0,wAlt-topY-m,hAlt-topY-m);
    noLoop();


    
    
// Call information from text file (only pulling first 3 variables) average and
// Code adapted from IAT 355 class example using some help from Allen
    float  xArr[] = new float[n] ;
     String lines[] = loadStrings( "data.txt" );
         for (int i=0; i < n  && i < lines.length ; i++ )
          {
             float[] numbers = float( split( lines[i], "," ) );
             for( int j = 0 ; j < numbers.length ; j++ )
               {
                 if( j == 0 )
                   {
                      xArr[i] = numbers[j] ;
                   }
                if( j == 1 )
                   {
                      yArr[i] = numbers[j] ;
                   }
                if( j == 2 )
                   {
                      colorArr[i] = numbers[j] ;
                   }

              }
          }
  
// Posting elipses to the spreadsheet  
  stroke( 40, 50, 200,75 );
  strokeWeight (1);
  for (int i=0; i<n; i++)
    {
      if (colorArr[i] == 1)
        {
          fill (top);
        }
      if (colorArr[i] == 2)
        {
          fill (mid);
        }
      if (colorArr[i] == 3)
        {
          fill (btm);
        }
  
// Draw data points (height - ... used because y-axis is inverse in processing    
  ellipse(xArr[i]*wAlt/10+m,hAlt - yArr[i]*hAlt/10, 7.0, 7.0 );
  }



}