Edge Bounce

float circlex =230;

float circley =140;

float circlespeedx = -5;

float circlespeedy = -3;

int direction = 1;

void setup(){

  size(700, 700);

}

​

float r1=0;

int d=0;

​

void draw(){

  background(#F2AA89);

  circlex = circlex + circlespeedx;

  circley = circley + circlespeedy;

  noStroke();

//  fill(circlex,circley);

//  ellipse(circlex, circley, 200, 200);

arc(circlex,circley, 100,100, QUARTER_PI-r1,PI+HALF_PI+QUARTER_PI+r1);

if(QUARTER_PI-r1<=0)

  r1=0;

  if(d>=700)

  d=-100;

  r1=r1+0.05;

  d=d+5;

​

​

//if the circley goes off top screen

//put the circle on screen

//if circley is negative

  if (circley < 0){

  circlespeedy = 2;

  fill(#F7432F);

  }

//if the circley goes off bottom screen

//if the circley is greater than height 

  if (circley > height){

  circlespeedy = -3;

    fill(#2FF7F6);

​

  }

//if the circlex is of the left screen

//if the circlex is smaller than 0 

  if (circlex < 0){

  circlespeedx = 5;

  fill(#9B764E);

​

  }

//if the circlex is of the right screen

//if the circlex is greater than width 

  if (circlex > width){

  circlespeedx = -3;

  fill(#CBB912);

​

  }

}

​