//Tristan Szakacs
//project0 part deux

float horizon;
float sunX, sunY;
color night = color( 255);
color day = color( 200, 200, 0);
void setup()
{
  size( 800, 800);
  horizon= height/4;
}

void draw()
{
  sky();
  sun();
}

//Method to create the sky.
void sky()
{
  if( sunX < (width * 0.65)) background( 50, 100, 200);
  if( sunX > (width * 0.65)) background(50, 100,  125);
}

//Method to create the Sun.
void sun()
{
  ellipseMode(CENTER);
  fill( day);
  ellipse( (float) sunX, sunY, 90, 90);
  sunX= (sunX + 1) % (width+100)-0.5;
  sunY= horizon-20 - 0.75 * horizon * sin( PI * sunX/width );
  stroke(1);
  
  if( sunX > (width * 0.65)) day = night;
  if( sunX < (width * 0.65)) day = color(200, 200, 0);
}