bola rebotando bordes

float posX;
float posY;
float desplazamientoY;
float desplazamientoX;

void setup () {
  size (400,400);
  posX= width/1;
  posY= height/3;
  desplazamientoY = 1;
  desplazamientoX = 1;

}

void draw () {
  background (0,255,0);
  noStroke();

  ellipse(X, posY, 100,100);
  fill(0,0,205);
  if (posY < 0){
    posY =0;
    desplazamientoY=1;
  }
  else if (posY > height){
    posY =height;
    desplazamientoX =-1;
    desplazamientoY =-1;
  }


 else if (posX < 0){
    posX =0;
    desplazamientoX=1;
 }
  else if (posX > height){
    posX =height;
    desplazamientoX =-1;
  }

  posX = posX+desplazamientoX;
  posY = posY+desplazamientoY;
 
}

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elipse processing

ELLIPSE
int x=50;
int y=50;
void setup() {
  size(500,500);
    background(55,155, 235);
}
void draw() {
  fill(233,122,43);
  rect(x, y, 150,150);
  stroke(233,122,134);
  fill(76,43,123);
  ellipse(x,y,100,100);
  stroke(76,45,65);




if(keyPressed){
  if(key=='w'||key=='W'){
    y--;
  }    else if(key=='s'||key=='S'){
      y++;
  }  else if(key=='a'||key=='A'){
      x--;
  }  else if(key=='d'||key=='D'){
      x++;
  }
}
}

  void mousePressed(){
    rect(x, y, 150,150);
     fill(132,73,213);
  ellipse(x,y,100,100);
  fill(233,122,43);
  }
void mouseReleased() {
  rect(x, y, 150,150);
  fill(76,43,123);
  ellipse(x,y,100,100);
  fill(233,122,43);
}

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cubo y esfera

http://www.iesrdelgado.org/web2017/web2018/josemaria/cuboyesfera3d/index.html

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processing

http://www.iesrdelgado.org/web2017/web2018/josemaria/imagen/index.html

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