/*
*  SolarWIND Visualization (Version 5.0)
*      SonicSENSE winter 2010: The Disappearing Night Sky – Hello Sun
*          Cielo/Sky: Exhibition opening Feb 12, 2010
*              Santa Cruz, Tenerife, Canary Islands & Santa Cruz, California
*
*  Built with Processing 1.0.1 on January 24, 2010
*      by Elizabeth Travelsight (etravelslight@gmail.com)
*          Digital Arts New Media Program, University of California Santa Cruz
*  
*  Using data provided by UCLA Space Science Center IGPP Solar Wind Data Server
*          at <http://www-ssc.igpp.ucla.edu/forms/polar/corr_data.html>
*
*/


//import processing.pdf.*;  //imports code to allow export of .pdf files in order to produce graphics (613).

String[] lines;  //declares array to make data available for draw().

int index=0;  //declares variable "index" to iterate draw function.
  
//sets up initial application window.    
void setup (){
  
  size(1000,750);  //set (width, height) of application window.
  
  //begins recording for pdf export; reads the contents of the .txt file, creates array composed of individual lines.
  
          //beginRecord(PDF, "SolarWIND_dataVis_feb_06_2008_n.pdf");  //begins recording for export, starts pdf file.
          //lines = loadStrings("solarWind_data_feb_06_2008.txt");  //loads Ash Wednesday feb_6_2008*/
  
      //beginRecord(PDF, "SolarWIND_dataVis_feb_25_2009_n.pdf");  //begins recording for export, starts pdf file. 
      //lines = loadStrings("solarWind_data_feb_25_2009.txt");  //loads Ash Wednesday feb_25_2009*/
  
      //beginRecord(PDF, "SolarWIND_dataVis_feb_21_2007_n.pdf");  //begins recording for export, starts pdf file. 
      //lines = loadStrings("solarWind_data_feb_21_2007.txt");  //loads Ash Wednesday feb_21_2007*/
  
          //beginRecord(PDF, "SolarWIND_dataVis_mar_01_2006_n.pdf");  //begins recording for export, starts pdf file. 
          //lines = loadStrings("solarWind_data_mar_01_2006.txt");  //loads Ash Wednesday mar_01_2006*/
  
      //beginRecord(PDF, "SolarWIND_dataVis_feb_09_2005_n.pdf");  //begins recording for export, starts pdf file. 
      //lines = loadStrings("solarWind_data_feb_09_2005.txt");  //loads Ash Wednesday feb_09_2005*/
      
       //beginRecord(PDF, "SolarWIND_dataVis_mar_29_1996_n.pdf");  //begins recording for export, starts pdf file.
       lines = loadStrings("solarWind_data_mar_29_1996.txt");  //loads march 29, 1996*/
  
          //beginRecord(PDF, "SolarWIND_dataVis_feb_12_2009_n.pdf");  //begins recording for export, starts pdf file. 
          //lines = loadStrings("solarWind_data_feb_12_2009.txt");  //loads feb 12, 2009*/
  
  
    for (int i=0; i<lines.length; i++){
      println(lines[i]);  //reads each line of the array and prints contents to console (429).
    }
  
  background(0); //set background color
  frameRate(100); //set framerate for viualization in frames per second.
  println(lines.length);  //prints number of lines in array to console.
      
}


//data processing and visualization are described here.
void draw(){
  
  //declares integer values as floats.
  float w = width;
  float h = height;
  float n = lines.length;
  float dw = w/n; //"index*dw" allows for the even distribution of lines in data base across width of application.
  float dh = h/n; //"index*dh" allows for the even distribution of lines in data base across height of application.
  
//splits each line of data set into pieces at each tab character (429).  
  if (index < lines.length){
    String[] pieces = split(lines[index], '\t'); // '\t'= [tab]
        if (pieces.length == 8){ //take action only if there are eight values on the line (429).
        
          //assigns float values to data from dataset.
          float Vx = int(pieces[0]); //"Vx" value from dataset is the velocity in Km/s in x direction.
          float Vy = int(pieces[1]); //"Vy" value from dataset is the velocity in Km/s in y direction.
          float Vz = int(pieces[2]); //"Vz" value from dataset is the velocity in Km/s in z direction.
          float D = int(pieces[3]); //"Np" value from dataset is the density of the wind in cubic centimeters.
          float P = int(pieces[4]); //"Dyn" value from dataset is a measure of pressure in nPa (nanopascals).
          float T = int(pieces[5]); //"Vth" value from dataset is the thermal velocity of the protons in Km/s,(indirect indication of temperature).
          float M = int(pieces[6]); //"BF1" value from dataset is the magnetic field strength in the heliosphere in nT (nanoteslas).
          float L = int(pieces[7]); //"X" value from dataset is a length or distance given in Re or Earth Radius?
 
    //put visualizations functions here!!
          
          
          //bezier curves
          smooth();
          fill(0,0,0,0);
          stroke(index+100,index/2,0);//120+M+Vz
          strokeWeight(.75);
          bezier(-Vx*2.0-575,-Vy,700-T*20,Vz*20,D*20,1000-P*20,L*100-500,M*150-200);
       }
        
        index = index + 1;  //goes to next line for next run through of draw (431).
        //saveFrame("feb_25_2009-####.tif");  //saves each frame as feb_25_2009-####.tif.
        //saveFrame("feb_21_2007-####.tif");  //saves each frame as feb_21_2007-####.tif.
        //saveFrame("feb_09_2005-####.tif");  //saves each frame as feb_09_2005-####.tif.
        saveFrame("mar_29_1996-####.tif");  //saves each frame as mar_29_1996-####.tif.

    }
} 
 
/*press [spacebar] to export pdf. 
void keyPressed(){ 
   if ((keyPressed == true) && (key == ' ')){
    endRecord();
    exit();
   }
 }*/