美術 ボール
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 = 800;
colors.push(color(0,128,64));
colors.push(color(128,192,225));
colors.push(color(255,192,128));
colors.push(color(255,192,128));
colors.push(color(0,192,192));
colors.push(color(0,128,128));
colors.push(color(255,192,128));
colors.push(color(255,160,64));
for (var i = 0; i < ball_num; i = i + 1) {
ballX[i] = random(-5, windowWidth);
ballY[i] = random(0, windowHeight);
speedX[i] = random(-1.0, 2.0);
speedY[i] = random(-1.0, 2.0);
ball_color[i] = floor(random(0, colors.length));
ball_diameter[i] = random(10, 90);
}
}
function draw() {
background(255,255,255,40);
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]);
}
}