雪と桜
var ball_num;
var ballX = [];
var ballY = [];
var speedX = [];
var speedY = [];
var ball_color = [];
var ball_diameter = [];
var colors = [];
function setup() {
createCanvas(windowWidth,
windowHeight);
ball_num = 3000;
colors.push(color(238, 135, 180));
colors.push(color(232, 82, 152));
colors.push(color(186, 121, 177));
colors.push(color(220, 102, 155));
colors.push(color(239, 133, 140));
colors.push(color(255, 246, 127));
colors.push(color(238, 238, 238));
colors.push(color(97, 193 , 190));
for (var i = 0; i < ball_num; i = i + 1) {
ballX[i] = random(10, windowWidth);
ballY[i] = random(10, windowHeight);
speedX[i] = random(-2.0, 2.0);
speedY[i] = random(-2.0, 2.0);
ball_color[i] = floor(random(0, colors.length));
ball_diameter[i] = random(8, 22);
}
}
function draw() {
background(50, 50, 50, 100);
noStroke();
for (var i = 0; i < ball_num; i++) {
ballX[i] = ballX[i] + speedX[i];
ballY[i] = ballY[i] + speedY[i];
if (ballX[i] > windowWidth || ballX[i] < 0) {
speedX[i] = -1 * speedX[i];
}
if (ballY[i] > windowHeight || ballY[i] < 0) {
speedY[i] = -1 * speedY[i];
}
}
for (var i = 0; i < ball_num; i++) {
fill(colors[ball_color[i]]);
ellipse(ballX[i], ballY[i], ball_diameter[i]);
}
}