下面的弧线是在 HTML5 画布中绘制的。如何使圆弧的外部更平滑,像素化更少,或者更抗锯齿?
这是用于创建上述圆弧的代码
var canvas = document.getElementById('myCanvas');
var context = canvas.getContext('2d');
var img = new Image();var x = canvas.width / 2;
var y = canvas.height / 2;
var radius = 100;
var startAngle = Math.PI;
var endAngle =2* Math.PI;
var counterClockwise = false;
var outX= x
var outY= y
var vari1 =.1;
var endAngle = startAngle+ vari1* Math.PI;
context.beginPath();
context.arc(outX , outY, radius, startAngle, endAngle, counterClockwise);
context.lineWidth = 25;
context.strokeStyle = '#FA603D';
context.stroke();
context.closePath();