// Homework 8
// Aileen Craig
//  Section A
//  aacraig@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;

PFont f1;

void setup( )
{
   size( 500, 300 );
   background( 0, 0, 255);
   
   f1 = loadFont("f1.vlw");
   textFont( f1 );
   fill( 255 );
   
   text( "The Total Rise of the graph is " , width*.06, height*.95);
   text( "The Total Fall of the graph is ", width*.55, height*.95);
   
   stroke( 255, 0, 0);
   line(0, height*.7, width, height*.7);
   
   horizontalScale = (width - 20)/yValues.length;
   
   // call your methods here
   drawPoints( );
   writeNumbers( );
   drawLines( );
   findMaxValues( );
   findMinValues( );
   findEqualValues( );
   totalRise( );
   totalFall( );
}


// Define your methods here

void findEqualValues( ) 
{
  int x = 20; 
  int equalValues = 0; 
  for( int i = 0; i < yValues.length - 1; i++)
  {
   if (yValues[i] == yValues[ i + 1 ])
   {
    drawYellowCircle( x + (horizontalScale*i), height*.7 - yValues[i]);
   } 
  }
}
 

void findMinValues( )
{
  int x = 20; 
  int minValues = 0; 
  for( int i = 0; i < yValues.length; i++)
  {
   if ( yValues[i] < yValues[ minValues])
   {
    minValues = i;
   } 
  }
  drawRedFlag( x + horizontalScale*minValues ,height*.7 - yValues[minValues]);
}

void findMaxValues( )
{
  int x = 20; 
  int maxValues = 0; 
  for( int i = 0; i < yValues.length; i++)
  {
   if ( yValues[i] > yValues[ maxValues])
   {
    maxValues = i;
   } 
  }
  drawGreenFlag( x + horizontalScale*maxValues ,height*.7 - yValues[maxValues]);
}

void drawPoints( )
{
 int x = 20;
 stroke(#F2FA19);
 strokeWeight( 10 );
 for( int i = 0; i < yValues.length; i ++)
 {
  point( x, height*.7 - yValues [i]);
  x = x + horizontalScale;
 }
}

void writeNumbers( )
{
 int x = 20; 
 strokeWeight( 5 );
 for ( int i = 0; i < yValues.length; i++)
 {
 text( yValues[ i ], x, height*.75 - yValues[i] );
 x = x + horizontalScale;  
 }
}

void drawLines( )
{
 int x = 20;
 strokeWeight( 2 );
 stroke( 255, 0, 0);
 for( int i=0; i < yValues.length - 1; i++)
 {
  line( x, height*.7 - yValues[i], x + horizontalScale, height*.7 - yValues[i + 1]);
  x = x + horizontalScale;  
 }
}

void drawGreenFlag(float x, float y )
{
 stroke ( 255 );
 line( x, y , x , y - height*.15 );
 
 fill( #25FA17 ); 
 triangle( x, y - height*.15, x + width*.08, y - height*.12 , x, y - height*.08);
}

void drawRedFlag( float x, float y)
{
 stroke ( 255 );
 line( x, y , x , y - height*.15 );
 
 fill( #FA171E ); 
 triangle( x, y - height*.15, x + width*.08, y - height*.12 , x, y - height*.08);
}

void drawYellowCircle(float x, float y)
{
 fill( #FAE817);
 ellipse( x + width*.03, y - height*.04, width*.05, height*.07);
}

void totalRise( )
{ 
  int sum = 0;
  for( int i=0; i<yValues.length - 1; i++)
  {
   if ( yValues[i] < yValues [i+1] )
   {
    sum = sum + ( yValues[i+1] - yValues[i]);
   }
  }
 fill ( 255 ); 
 text( sum, width*.4, height*.95); 
}

void totalFall( )
{ 
  int sum = 0;
  for( int i=0; i<yValues.length - 1; i++)
  {
   if ( yValues[i] > yValues [i+1] )
   {
    sum = sum + ( yValues[i] - yValues[i+1]);
   }
  }
 fill( 255 ); 
 text( sum, width*.88, height*.95); 
}