canvas实现类似钢笔区域选择变色效果代码
代码语言:html
所属分类:其他
代码描述:canvas实现类似钢笔区域选择变色效果代码
下面为部分代码预览,完整代码请点击下载或在bfwstudio webide中打开
<!DOCTYPE html>
<html>
<head>
<title>Canvas Pen Selection Tool</title>
<style>
canvas {
border: 1px solid black;
}
</style>
</head>
<body>
<canvas id="canvas" width="500" height="500"></canvas>
<script>
var canvas = document.getElementById('canvas');
var ctx = canvas.getContext('2d');
var isDrawing = false;
var startPoint = { x: 0, y: 0 };
var points = [];
canvas.addEventListener('mousedown', functi.........完整代码请登录后点击上方下载按钮下载查看
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