<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
</head>
<body>
<canvas id="canvas" width="500" height="500"></canvas>
<script>
let canvas = document.querySelector("#canvas");
let context = canvas.getContext("2d");
context.moveTo(0, 0);
context.lineTo(100, 100);
context.lineWidth = 10;
context.strokeStyle = "green";
// 绘制阴影
context.shadowColor = "red";
context.shadowOffsetX = 10;
context.shadowOffsetY = 10;
context.shadowBlur = 10;
context.stroke()
</script>
</body>
</html>
设置阴影
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
</head>
<body>
<canvas id="canvas" width="500" height="500"></canvas>
<script>
let canvas = document.querySelector("#canvas");
let context = canvas.getContext("2d");
// 设置起始点
context.moveTo(100, 100);
// 控制点x1,y1 终点x2,y2
context.quadraticCurveTo(150, 300, 400, 100);
context.stroke();
</script>
</body>
</html>
绘制二阶贝塞尔曲线
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
</head>
<body>
<canvas id="canvas" width="500" height="500"></canvas>
<script>
let canvas = document.querySelector("#canvas");
let context = canvas.getContext("2d");
// 设置起始点
context.moveTo(100, 100);
// 控制点x1,y1 控制点x2,y2 终点x3,y3
context.bezierCurveTo(150, 300, 200, 0, 400, 100);
context.stroke();
</script>
</body>
</html>
绘制三阶贝塞尔曲线
