画布beginPath()方法用于启动路径或重置当前路径。 moveTo(),lineTo(),quadricCurveTo(),bezierCurveTo(),arcTo()和arc()方法用于创建路径。此外,stroke()方法用于在画布上绘制路径。
用法:
context.beginPath();
范例1:
<!DOCTYPE html>
<html>
<head>
<title>
HTML canvas beginPath() Property
</title>
</head>
<body style="text-align:center;">
<h1 style="color:green;">
GeeksforGeeks
</h1>
<h2>HTML canvas beginPath() Property</h2>
<canvas id="GFG" width="500" height="300"></canvas>
<script>
var GFG = document.getElementById("GFG");
var context = GFG.getContext("2d");
// Create a path
context.beginPath();
// Set the path width
context.lineWidth = "8";
// Set the path color
context.strokeStyle = "green";
context.moveTo(100, 250);
context.lineTo(150, 50);
context.lineTo(250, 250);
context.stroke();
context.beginPath();
</script>
</body>
</html>
输出:
范例2:
<!DOCTYPE html>
<html>
<head>
<title>
HTML canvas beginPath() Property
</title>
</head>
<body style="text-align:center;">
<h1 style="color:green;">
GeeksforGeeks
</h1>
<h2>HTML canvas beginPath() Property</h2>
<canvas id="GFG" width="500" height="300"></canvas>
<script>
var GFG = document.getElementById("GFG");
var context = GFG.getContext("2d");
// Set the path width
context.lineWidth = 5;
// Create path
context.beginPath();
context.moveTo(100, 20);
context.lineTo(230, 200);
// Set path color
context.strokeStyle = 'green';
context.stroke();
// Create another path
context.beginPath();
context.moveTo(230, 200);
context.quadraticCurveTo(230, 200, 260, 100);
// Set path color
context.strokeStyle = 'blue';
context.stroke();
// Create another path
context.beginPath();
context.moveTo(260, 100);
context.bezierCurveTo(290, -40, 300, 190, 400, 150);
// Set path color
context.strokeStyle = 'orange';
context.stroke();
context.closePath();
</script>
</body>
</html>
支持的浏览器:下面列出了HTML canvas beginPath()方法支持的浏览器:
- 谷歌浏览器
- Internet Explorer 9.0
- 火狐浏览器
- 苹果浏览器
- Opera
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- HTML canvas fillRect()用法及代码示例
- HTML canvas strokeRect()用法及代码示例
- HTML canvas measureText()用法及代码示例
- HTML canvas lineTo()用法及代码示例
- HTML canvas clearRect()用法及代码示例
- HTML canvas createImageData()用法及代码示例
- HTML canvas fill()用法及代码示例
- HTML canvas stroke()用法及代码示例
- HTML canvas rect()用法及代码示例
- HTML canvas closePath()用法及代码示例
- HTML canvas scale()用法及代码示例
- HTML canvas arcTo()用法及代码示例
注:本文由纯净天空筛选整理自IshwarGupta大神的英文原创作品 HTML | canvas beginPath() Method。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。