HTML5 canvas：具有for循環的多重弧形

Question

嗨，我在下面的代碼中遇到的問題是圓弧正在創建1個形狀，而不是for循環中指定的十個形狀...

如果我要從arc更改為$cd.fillRect(10,20,$x,$y); 那會創建10個不同的矩形，但不是圓弧...我在這里誤解了什么？

 
var $canvas = $('#canvas-one')[0],
    $cd;


if ($canvas.getContext) {

$cd = $canvas.getContext('2d');

for (i = 0; i <= 10; i++) {

    $cd.fillStyle = "rgb(" + Math.floor(Math.random() * 255) + "," + Math.floor(Math.random() * 255) + "," + Math.floor(Math.random() * 255) + ")";

    $cd.strokeStyle = "rgb(" + Math.floor(Math.random() * 255) + "," + Math.floor(Math.random() * 255) + "," + Math.floor(Math.random() * 255) + ")";

    var $x = 300 + Math.floor(Math.random() * 101);
    var $y = 300 + Math.floor(Math.random() * 101);
    var $radius = 0.1 + Math.floor(Math.random() * 6);

    $cd.beginPath();

    $cd.arc($x, $y, $radius, 0, Math.PI * 2, true);

}

$cd.stroke();
$cd.fill();

//$canvas.width = $canvas.height;


} 

Answer 1

筆觸和填充應該在循環中

Answer 2

我認為您忘了將x與i相乘。

for (let i = 0; i < 10; i++) {
    context.fillStyle = "rgb(" + Math.floor(Math.random() * 255) + "," + Math.floor(Math.random() * 255) + "," + Math.floor(Math.random() * 255) + ")";
    context.beginPath();
    context.arc(i * x, y,15, 0, 2 * Math.PI,true);
    context.fill();