我正在尝试申请 <filter>
在<path>
上但我遇到了被剪裁的问题,不仅是模糊,还有原始图像的部分,即标记。
因此我尝试增加默认过滤器高度(即 120%
),但似乎没有帮助。
<svg style="height:400px;width:100%;background-color:LightCyan">
<defs>
<filter id="colorFilter" height="999%">
<feGaussianBlur in="SourceAlpha" stdDeviation="1" result="blur"></feGaussianBlur>
<feColorMatrix type="matrix" values="0 0 0 0 0 0 0 0 0 255 0 0 0 0 0 0 0 0 3 0" result="lightenedBlur"></feColorMatrix>
<feMerge>
<feMergeNode in="lightenedBlur"></feMergeNode>
<feMergeNode in="SourceGraphic"></feMergeNode>
</feMerge>
</filter>
<marker id="arrow" viewBox="0 -5 10 10" refX="0" refY="0" markerWidth="8" markerHeight="8" orient="auto" style="fill: grey;">
<path d="M0,-5L10,0L0,5"></path>
</marker>
</defs>
<g transform="scale(2)">
<g transform="translate(-500,-230)">
<path stroke="grey" fill="none" marker-end="url(#arrow)" d="M555,274L657.4632873535149,274L657.4632873535149,271.03831481933645L759.92657470703,271.03831481933645"></path>
</g>
<g transform="translate(-500,-200)" filter="url(#colorFilter)">
<path stroke="grey" fill="none" marker-end="url(#arrow)" d="M555,274L657.4632873535149,274L657.4632873535149,271.03831481933645L759.92657470703,271.03831481933645"></path>
</g>
<g transform="translate(-500,-120)" filter="url(#colorFilter)">
<path stroke="grey" fill="none" marker-end="url(#arrow)" d="M555,274L657.6947631835931,274L657.6947631835931,222.58172607421926L760.3895263671862,222.58172607421926"></path>
</g>
</g>
</svg>
现在是<g>
跨越包围其所有子项所需的尽可能多的距离,这意味着对于顶部箭头来说,开始时的高度并不是很大,因此我尝试使用 height
的绝对值而不是相对值。但这也无济于事:
<svg style="height:300px;width:100%;background-color:LightCyan">
<defs>
<filter id="colorFilter" height="1234">
<feGaussianBlur in="SourceAlpha" stdDeviation="1" result="blur"></feGaussianBlur>
<feColorMatrix type="matrix" values="0 0 0 0 0 0 0 0 0 255 0 0 0 0 0 0 0 0 3 0" result="lightenedBlur"></feColorMatrix>
<feMerge>
<feMergeNode in="lightenedBlur"></feMergeNode>
<feMergeNode in="SourceGraphic"></feMergeNode>
</feMerge>
</filter>
<marker id="arrow" viewBox="0 -5 10 10" refX="0" refY="0" markerWidth="8" markerHeight="8" orient="auto" style="fill: grey;">
<path d="M0,-5L10,0L0,5"></path>
</marker>
</defs>
<g transform="scale(2)">
<g transform="translate(-500,-230)" filter="url(#colorFilter)">
<path stroke="grey" fill="none" marker-end="url(#arrow)" d="M555,274L657.4632873535149,274L657.4632873535149,271.03831481933645L759.92657470703,271.03831481933645"></path>
</g>
<g transform="translate(-500,-150)" filter="url(#colorFilter)">
<path stroke="grey" fill="none" marker-end="url(#arrow)" d="M555,274L657.6947631835931,274L657.6947631835931,222.58172607421926L760.3895263671862,222.58172607421926"></path>
</g>
</g>
</svg>
知道什么可能会导致这种剪裁以及可以采取什么措施吗?为什么height
高于某个点的属性值在这里不起作用?
(在 Chrome、Firefox 和 Edge 中复制 - 看起来不像浏览器错误。)
最佳答案
您还必须移动滤镜效果区域的上边框。默认值为y=-10%
。
<svg style="height:400px;width:100%;background-color:LightCyan">
<defs>
<filter id="colorFilter" y="-200%" height="500%">
<feGaussianBlur in="SourceAlpha" stdDeviation="1" result="blur"></feGaussianBlur>
<feColorMatrix type="matrix" values="0 0 0 0 0 0 0 0 0 255 0 0 0 0 0 0 0 0 3 0" result="lightenedBlur"></feColorMatrix>
<feMerge>
<feMergeNode in="lightenedBlur"></feMergeNode>
<feMergeNode in="SourceGraphic"></feMergeNode>
</feMerge>
</filter>
<marker id="arrow" viewBox="0 -5 10 10" refX="0" refY="0" markerWidth="8" markerHeight="8" orient="auto" style="fill: grey;">
<path d="M0,-5L10,0L0,5"></path>
</marker>
</defs>
<g transform="scale(2)">
<g transform="translate(-500,-230)">
<path stroke="grey" fill="none" marker-end="url(#arrow)" d="M555,274L657.4632873535149,274L657.4632873535149,271.03831481933645L759.92657470703,271.03831481933645"></path>
</g>
<g transform="translate(-500,-200)" filter="url(#colorFilter)">
<path stroke="grey" fill="none" marker-end="url(#arrow)" d="M555,274L657.4632873535149,274L657.4632873535149,271.03831481933645L759.92657470703,271.03831481933645"></path>
</g>
<g transform="translate(-500,-120)" filter="url(#colorFilter)">
<path stroke="grey" fill="none" marker-end="url(#arrow)" d="M555,274L657.6947631835931,274L657.6947631835931,222.58172607421926L760.3895263671862,222.58172607421926"></path>
</g>
</g>
</svg>
顺便说一句,只有设置 filterUnits="userSpaceOnUse"
时才可以使用绝对值。关于 y 值的使用的相同注释也适用。
关于svg - <filter> 的巨大高度值不会阻止截断,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/46120700/