array教学

bubble.pde

int size = 60;
float x = 0;
color bgColor = #267598;
color fillColor = #77C5E8;
color strokeColor = #A6E2FC;
int stroke = size / 10;

int dir = -1;
int numBubbles = 5;
float[] y = new float[numBubbles];
int[] speed = new int[numBubbles];


void setup() {
  size(600, 600);
  fill(fillColor);
  stroke(strokeColor);
  strokeWeight(stroke);
  x = width / 2;
}

void draw() {
  background(bgColor);
  update();
}

void update() {
  for (int i = 0; i<numBubbles; ++i) {
    y[i] = random(height);
    speed[i] = int(random(1,4));
  }
  for (int i = 0; i<numBubbles; ++i) {
    ellipse(width/numBubbles*i,y[i],50,50);
  }
}

bubble_growing.pde

int amount_of_circles = 20;
int[][] init_xy = new int[amount_of_circles][2];
int[] circle_r = new int[amount_of_circles]; 
int growing_speed = 1;
int max_r = 400;

void setup() {
  size(800, 800);
  
  // init circle position
  for (int i=0; i<amount_of_circles; i++) {
    int[] temp = {int(random(width)), int(random(height))};
    init_xy[i] = temp;
    circle_r[i] = int(random(0, width/2));
  }
}

void draw() {
  background(200);
  fill(10, 10, 10, 0.6);
  for (int i=0; i<amount_of_circles; i++) {
    ellipse(init_xy[i][0], init_xy[i][1], circle_r[i] += 1, circle_r[i] += 1);
    if (circle_r[i] > max_r) {
      int[] temp = {int(random(width)), int(random(height))};
      init_xy[i] = temp;
      circle_r[i] = int(random(0, width/2));
    }
  }
}