05161022-w8 筆記

1. 猜杯子物件
    PVector[] cup = new PVector[3];
    PVector[] cupV= new PVector[3];
    int guess;
    void setup(){
      size(400,300);
      for(int i=0; i<3; i++){
        cup[i] = new PVector(100+i*100,100);
        cup[i] = new PVector(random(4), random(3));
      }
      guess = int(random(3));
      println(guess);
    }
    void draw(){
      background(255);
      for(int i=0; i<3; i++){
        cup[i].add(cupV[i]);
        if(cup[i].x<0 || cup[i].x>400) cupV[i].x *= -1;
        if(cup[i].y<0 || cup[i].y>300) cupV[i].y *= -1;
        fill(255);
        ellipse(cup[i].x, cup[i].y, 90, 60);
      }
    }

2.