我试图在<filter>
上应用<path>
,但我遇到的问题是被裁剪的东西,不仅仅是模糊,还有原始图像的一部分,即标记。
所以我尝试增加默认的过滤器高度(这是120%
)但它似乎没有帮助。
<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<g>
跨越了包围其所有孩子所必需的数量,这意味着对于顶部箭头,高度开始并不是很多,所以我尝试使用height
的绝对值而不是相对值,但这无济于事:
<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>
知道什么可能导致这种削波,可以做些什么呢?为什么height
属性值高于某个点在这里没有影响?
(在Chrome,Firefox和Edge中转载 - 看起来不像浏览器错误。)
您还必须移动滤镜效果区域的上边框。默认是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>
另外,使用绝对值仅在设置filterUnits="userSpaceOnUse"
时有效。关于y值的使用的相同注释适用。