Home > Article > Web Front-end > html5 canvas的lineWidth属性为何设置1px间隔时看不到间隙？
html5 canvas的lineWidth属性为何设置1px间隔时看不到间隙？
- WBOYOriginal
- 2016-06-07 08:43:031623browse
回复内容：
moveTo(5,0); lineTo(5,300) 产生的path上进行stroke实际上是绘制了坐标为4.5到5.5的1像素宽的线。因为canvas是bitmap，所以会虚化为坐标4到6的两个像素宽。你要画正好一像素得用 moveTo(5.5, 0); lineTo(5.5, 300) 一般画奇数线宽比如1px 要把绘制点设置在一个像素的中间，这样两边各平分.5个像素刚好1px 绘制偶数的，绘制点取整数
Statement：
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article：HTML5 对 SEO 有哪些影响？Next article：html5推出queryselectall之后，jQuery的作用是否减小了？
Related articles
See more- AlloyTouch full-screen scrolling plug-in creates a smooth H5 page in 30 seconds
- HTML5 actual combat and analysis of touch events (touchstart, touchmove and touchend)
- Detailed explanation of image drawing examples in HTML5 canvas 9
- Regular expressions and new HTML5 elements
- How to combine NodeJS and HTML5 to drag and drop multiple files to upload to the server