// Homework 8
//  Claire Castleman
//  Section D
//  ccastlem@andrew.cmu.edu

  //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 };

PFont f1;

void setup( )
{
   size( 500, 300 );
   background( 0, 0, 255);
   
   f1 = loadFont("f1.vlw");
   textFont( f1 );
   fill( 255 );
   
   DrawGraph();
   Label();
   GreenFlags();
   RedFlags();
   YellowCircle();
   Stats();
}


void DrawGraph()
{
  
  strokeWeight(3);
  stroke(255, 0, 0);
  
  line(0, height -  50, width, height - 50);
  
  stroke(255);
  
  for(int i = 0; i < yValues.length; i++)
  {   
    ellipse( ( ((width)*(i+1)) / ( yValues.length + 1 ) ), height - yValues[i] - 50, 1, 1);
  }
  
  strokeWeight(1);
  stroke(0, 255, 0);
  
  for(int j = 0; j < yValues.length - 1; j++)
  {
    line( ( ((width)*(j+1)) / ( yValues.length + 1 ) ), height - yValues[j] - 50, ( ((width)*(j+2)) / ( yValues.length + 1 ) ) , height - yValues[j+1] - 50);
  }
}

void Label()
{
  fill(255);
  
  for( int k = 0; k < yValues.length; k++)
   {
     text( yValues[k], (((width)*(k+1)) / ( yValues.length + 1 )) - 6, height - yValues[k] - 25);
   }
}

void GreenFlags()
{
int highIndex = 0;
 
 for(int m = 1; m < yValues.length; m ++)
 {
   if (yValues[m] > yValues[highIndex])
   {
     highIndex = m;
   }
 }
 
int x1 = ((width)*(highIndex+1)) / ( yValues.length + 1 ), y1 = height - yValues[highIndex] - 65;
  
  stroke(0, 255, 0);
  fill(0, 255, 0);
  
  triangle( x1, y1, x1+10, y1-5, x1, y1-10);
  line(x1, y1, x1, y1+15);
 
}

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

 for(int n = 0; n < yValues.length; n++)
 {
  if (yValues[lowIndex] == yValues[n])
  {
    int x2 = ((width)*(n+1)) / ( yValues.length + 1 ), y2 = height - yValues[n] - 65;
  
  stroke(255, 0, 0);
  fill(255, 0 , 0);
  
  triangle( x2, y2, x2+10, y2-5, x2, y2-10);
  line(x2, y2, x2, y2+15);
  }
 }
}

void YellowCircle()
{
 
 for(int p = 1; p < yValues.length -1; p++)
 {
  if(yValues[p] == yValues[p+1])
   {
      int x3 = ((width)*(p+1)) / ( yValues.length + 1 );
      int x4 = ((width)*(p+2)) / ( yValues.length + 1 );
      int y3 = height - yValues[p] - 60;
     
     stroke(255, 255, 0);
     fill(255, 255, 0);
     ellipse((x3+x4)/2, y3, 8, 8);
   } 
 }
  
}

void Stats()
{
  int totalRise = 0;
  int totalFall = 0;
  
  for( int q = 1; q < yValues.length; q++)
  {
   if (yValues[q] > yValues[q-1])
    {
      totalRise+= (yValues[q] - yValues[q-1]);
    } 
  }
  
  for( int q = 1; q < yValues.length; q++)
  {
   if (yValues[q] < yValues[q-1])
    {
      totalFall+= (yValues[q-1] - yValues[q]);
    } 
  }
  
  fill(255);
  text("The total rise of the graph is " + totalRise + ".", 15, height - 15);
  text("The total fall of the graph is " + totalFall + ".", (width/2) + 30, height - 15);
  
}