本文介绍了我怎样才能创造一个“发光"?围绕一个带有 svg 的矩形?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有类似以下内容:
<svg id="svgLogo1" style="left:0; top:0; position:absolute"
width="980" height="80" viewBox="0 0 980 80"
xmlns="http://www.w3.org/2000/svg">
<rect x="0" y="5" width="980" height="54" rx="6" ry="6"
style="stroke-width:2; xstroke:#FFF; fill:#555"/>
</svg>
我想在这个周围创造一个白色的光芒.
I would like to create a white glow around this.
有什么方法可以在 svg 中做到这一点.我环顾四周,我能找到的只是阴影",这并不是我真正想要的,因为我想要矩形的所有四个边周围都有阴影(发光).
Is there some way that I can do this in svg. I looked around and all I can find is "shadow" which is not really what I am looking for as I want a shadow (Glow) around all four sides of the rectangle.
推荐答案
以下是一些提供不同类型效果的过滤器:
Here are some filters that provide different types of effect:
- 阴影(带有轻微偏移的透明黑色阴影)
- 黑色发光(具有固定颜色)
- 物体颜色的发光(采用它所应用的物体的颜色)
示例:
这里有一个演示.
代码:
<!-- a transparent grey drop-shadow that blends with the background colour -->
<filter id="shadow" width="1.5" height="1.5" x="-.25" y="-.25">
<feGaussianBlur in="SourceAlpha" stdDeviation="2.5" result="blur"/>
<feColorMatrix result="bluralpha" type="matrix" values=
"1 0 0 0 0
0 1 0 0 0
0 0 1 0 0
0 0 0 0.4 0 "/>
<feOffset in="bluralpha" dx="3" dy="3" result="offsetBlur"/>
<feMerge>
<feMergeNode in="offsetBlur"/>
<feMergeNode in="SourceGraphic"/>
</feMerge>
</filter>
<!-- a transparent grey glow with no offset -->
<filter id="black-glow">
<feColorMatrix type="matrix" values=
"0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0.7 0"/>
<feGaussianBlur stdDeviation="2.5" result="coloredBlur"/>
<feMerge>
<feMergeNode in="coloredBlur"/>
<feMergeNode in="SourceGraphic"/>
</feMerge>
</filter>
<!-- a transparent glow that takes on the colour of the object it's applied to -->
<filter id="glow">
<feGaussianBlur stdDeviation="2.5" result="coloredBlur"/>
<feMerge>
<feMergeNode in="coloredBlur"/>
<feMergeNode in="SourceGraphic"/>
</feMerge>
</filter>
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