// Homework 8
//  Name: chongho lee
//  Section: A
//  E-Mail: chonghol@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;
int highIndex = findHighIndex();
int lowIndex = findLowIndex();
int x;

PFont f1;

void setup( )
{
   size( 500, 300 );
   background( 0, 0, 255);
   horizontalScale = width/yValues.length;
   
   f1 = loadFont("f1.vlw");
   textFont( f1 );
   fill( 255 );
   
   //text( "Nothing is working yet.", width*.4, 50);

   translate(0, height*0.8);
   strokeWeight( 1 );
   stroke(255, 0, 0);
   line(0, 0, width, 0);
   
   //println(yValues);
   // call your methods here
   noStroke();
   drawPoints();
   placeFonts();
   drawLines();
   
   //int highIndex = findHighIndex();
   
   //println("The index with the hightest value is " + highIndex);
   //println("Highest Index value is " + yValues[highIndex]);
   
   //int lowIndex = findLowIndex();
   //println("The index with the lowest value is " + lowIndex);
   //println("Lowest Index value is " + yValues[lowIndex]);
 
   drawFlag();
   drawPlaneCircle();
   
   int sumRise = findSumRise();
   int sumFall = findSumFall();   
   
   fill (255);
   text( "Total Rise of the graphs is " + sumRise , width*0.05, height*0.15);
   text( "Total Fall of the graphs is " + sumFall , width*0.6, height*0.15);
}

// Define your methods here

void drawPoints()
{
  fill(255, 230, 3);
  rectMode(CENTER);
  x = 10;
  for (int i=0; i <= yValues.length-1; i++)
  {
    rect(x, -yValues[i], width*0.015, height*0.015);
    x = x + horizontalScale;
  }
}

void placeFonts()
{
  fill(255);
  x = 10;
  for (int i=0; i <= yValues.length-1; i++)
  {
    text(yValues[i], x-width*0.01, -yValues[i]+height*0.05);
    x = x + horizontalScale;
  }
}


void drawLines()
{
  stroke(255, 0, 0);
  x = 10;
  for (int i=0; i < yValues.length-1; i++)
  {
    line(x, -yValues[i], x + horizontalScale, -yValues[i+1]);
    x = x + horizontalScale;
    
  }
}

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


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


void drawFlag()
{
  x = 10;
  for (int i = 0; i < yValues.length; i++)
  {
   if (yValues[i] == yValues[highIndex])
   {
      stroke(0, 255, 0);
      line(horizontalScale*highIndex+x, -yValues[highIndex], horizontalScale*highIndex+x, -yValues[highIndex]-20);
      fill(0, 255, 0);
      triangle(horizontalScale*highIndex+x, -yValues[highIndex]-20, horizontalScale*highIndex+x, -yValues[highIndex]-40, horizontalScale*highIndex+x+10, -yValues[highIndex]-30); 
   }
   if (yValues[i] == yValues[lowIndex])
   {
      stroke(255, 0, 0);
      line(horizontalScale*lowIndex+x, -yValues[lowIndex], horizontalScale*lowIndex+x, -yValues[lowIndex]-20);
      fill(255, 0, 0);
      triangle(horizontalScale*lowIndex+x, -yValues[lowIndex]-20, horizontalScale*lowIndex+x, -yValues[lowIndex]-40, horizontalScale*lowIndex+x+10, -yValues[lowIndex]-30);       
   }
  } 
  
}



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


int findSumRise()
{
  int sumRise = 0;
  for (int i = 0; i < yValues.length-1; i++)
  {
     if ( yValues[i] < yValues[i+1])
     {
        sumRise = sumRise + yValues[i+1]-yValues[i];
     }
  }
  return sumRise; 
}


int findSumFall()
{
  int sumFall = 0;
  for (int i = 0; i < yValues.length-1; i++)
  {
     if ( yValues[i] > yValues[i+1])
     {
        sumFall = sumFall + yValues[i]-yValues[i+1];
     }
  }
  return sumFall;
}