// Homework 8
//  Name: Dae Hong Kim
//  Section: D
//  E-Mail: daek@andrew.cmu.edu

// Global Variables

int [ ] yValues = { 40, 20, 60, 70, 40, 40, 30, 80, 50, 120, 40, 80, 80, 10, 50, 70, 90 };
//int [ ] yValues = { 40, 20, 60, 70, 10, 10, 10, 80, 50, 100 };
//int [ ] yValues = { 40, 20, 60, 70, 40, 10 };

int horizontalScale;
float baseLine;

PFont f1;

void setup( )
{
  size( 500, 300 );
  background( 0, 0, 255);

  f1 = loadFont("f1.vlw");
  textFont( f1 );
  fill( 255 );

  horizontalScale = width/(yValues.length+1);

  stroke(255, 0, 0);
  baseLine = height*0.8;

  line(0, baseLine, width, baseLine); 

  // call your methods here

  drawPoints();
  drawLines();
  
  findHighest();
  findLowest();
  findPlain();
  
  fill(255);  
  text("Total Rise of the graph is " + totalRise(), width*0.05, height*0.95);
  text("Total Fall of the graph is " + totalFall(), width*0.6, height*0.95);
  
}//end of setup()


// Define your methods here

int totalFall()
{
  int totalSum = 0;
  
  for(int i=1; i<yValues.length; i++)
  {
    if(yValues[i] < yValues[i-1])
    {
     totalSum += yValues[i-1] - yValues[i];
    }    
  }
  return totalSum; 
}// end of totalRise()



int totalRise()
{
  int totalSum = 0;
  
  for(int i=1; i<yValues.length; i++)
  {
    if(yValues[i] > yValues[i-1])
    {
     totalSum += yValues[i] - yValues[i-1];
    }    
  }
  return totalSum; 
}// end of totalRise()


void drawPoints()
{
  int xPos = horizontalScale;
  noStroke();

  for(int i=0; i< yValues.length; i++)
  {
    fill(200, 200, 0);
    ellipse(xPos, baseLine-yValues[i], 5, 5);

    fill(255);
    text(yValues[i], xPos-5, (baseLine-yValues[i]+15));

    xPos += horizontalScale;    
  }
}//end of drawPoints()


void drawLines()
{
  int xPos = horizontalScale;
  stroke(255, 0, 0);

  for(int i=0; i< yValues.length-1; i++)
  {
    line(xPos, baseLine-yValues[i], xPos+horizontalScale, baseLine-yValues[i+1]);

    xPos += horizontalScale;    
  }
}//end of drawLines()


void findHighest()
{
  int highIndex = 0;
  
  for(int i=1; i<yValues.length; i++)
  {
    if(yValues[i] > yValues[highIndex])
    {
      highIndex = i;      
    }

  }//end of for
 
 drawFlag(highIndex, #00FF00);  
 
// println("HighTemp: " + highTemp + ", and the values: " + yValues[highTemp]);
  
}//end of findHighest()


void findLowest()
{
  int lowIndex = 0;
  
  for(int i=1; i<yValues.length; i++)
  {
    if(yValues[i] < yValues[lowIndex])
    {
      lowIndex = i;      
    }

  }//end of for
 
 drawFlag(lowIndex, #FF0000);
// println("LowTemp: " + lowTemp + ", and the values: " + yValues[lowTemp]);
  
}//end of findHighest()



void drawFlag(int i, color colr)
{
  stroke(255);
  line(horizontalScale*(i+1), baseLine-yValues[i], horizontalScale*(i+1), baseLine-yValues[i]-10);
  fill(colr);
  triangle(horizontalScale*(i+1), baseLine-yValues[i]-10, horizontalScale*(i+1), baseLine-yValues[i]-20, horizontalScale*(i+1)+10, baseLine-yValues[i]-15);
  
}//end of drawFlag


void findPlain()
{
  fill(255, 255, 0);
  
  for(int i=0; i<yValues.length-1; i++)
  {
    if(yValues[i] == yValues[i+1])
    {
      ellipse(horizontalScale*(i+1)+(horizontalScale/2), baseLine-yValues[i]-10, 20, 20);    
    }

  }//end of for 
  
}//end of findPlain()