烟台网站设计公司推荐,中国空间站现在有几个人,wordpress 搜索高亮,网站注册备案之后怎么做网站1 feImage#xff1a;图像滤镜
feImage 滤镜从外部来源取得图像数据#xff0c;并提供像素数据作为输出#xff08;意味着如果外部来源是一个 SVG 图像#xff0c;这个图像将被栅格化。#xff09;
1.1 用法:
feImage x y width图像滤镜
feImage 滤镜从外部来源取得图像数据并提供像素数据作为输出意味着如果外部来源是一个 SVG 图像这个图像将被栅格化。
1.1 用法:
feImage x y width height externalResourcesRequired
preserveAspectRatio xlink:href/1.2 属性
x: 用户坐标系中定义x轴坐标y: 用户坐标系中定义y轴坐标width: foreignObject的宽度height: foreignObject的高度externalResourcesRequired: 当前文档中是否需要外部资源。默认值为falsepreserveAspectRatio: 指示具有提供给定纵横比的viewBox的元素如何必须适合具有不同纵横比的视口xlinkhref 定义对资源的引用crossorigin: 通知浏览器请求具有cross-origin权限的图像文件 2 feDiffuseLighting漫反射
2.1 用法: feDiffuseLighting inSourceGraphiclighting-colorsurfaceScalediffuseConstantresult
/feDiffuseLighting2.2 属性
阿尔法乘积因子(surfaceScale)RGB乘积因子(diffuseConstant)灯光颜色(lighting-color)
svg xmlnshttp://www.w3.org/2000/svg version1.1 width200 height200defsfilter iddiff-light color-interpolate-filtersRGB x0 y0feDiffuseLighting inSourceGraphiclighting-colororangesurfaceScale1diffuseConstant0.5resultdiffuseOutputfePointLight x100 y100 z20//feDiffuseLightingfeComposite in1diffuseOutput in2SourceGraphic operatorin resultdiffuseOutput/feCompositefeBlend in1diffuseOutput in2SourceGraphic modescreen/feBlend/filter/defscircle cx100 cy100 r100 filterurl(#diff-light)/circle/svg3 feSpecularLighting镜面反射
3.1 用法: feSpecularLighting inSourceGraphiclighting-colorsurfaceScalespecularConstantspecularExponentresult
/feSpecularLighting3.2 属性
阿尔法乘积因子(surfaceScale)specularConstant灯光颜色(lighting-color)
svg xmlnshttp://www.w3.org/2000/svg version1.1 width200 height200defsfilter idspec-light color-interpolate-filtersRGB x0 y0feSpecularLighting inSourceGraphiclighting-colororangesurfaceScale1specularConstant1specularExponent4resultspecOutputfeDistantLight elevation25 azimuth0//feSpecularLightingfeComposite in1specOutput in2SourceGraphic operatorin resultspecOutput/feComposite/filter/defscircle cx100 cy100 r100 filterurl(#spec-light)/circle/svg4 # feComposite组合滤镜
该滤镜执行两个输入图像的智能像素组合在图像空间中使用以下 Porter-Duff 合成操作之一over、in、atop、xor。另外还可以应用一个智能组件arithmetic 操作结果被压到 [0,1] 范围内。
该 arithmetic 操作对组合来自feDiffuseLighting滤镜和来自feSpecularLighting 滤镜的输出以及组合纹理数据很有用。如果选择了arithmetic操作每个结果像素都要经过下面的方程式的计算 result k1i1i2 k2i1 k3i2 k4 在这里 i1 和 i2 标示了输入图像相应的像素通道值分别映射到in和in2 (en-US)。k1、k2、k3 和 k4 标示了同名的属性值。 这里有一个例子可以参考
svg width330 height195 viewBox0 0 1100 650 version1.1xmlnshttp://www.w3.org/2000/svg xmlns:xlinkhttp://www.w3.org/1999/xlinktitleExample feComposite - Examples of feComposite operations/titledescFour rows of six pairs of overlapping triangles depictingthe six different feComposite operators under differentopacity values and different clearing of the background./descdefsdescDefine two sets of six filters for each of the six compositing operators.The first set wipes out the background image by flooding with opaque white.The second set does not wipe out the background, with the resultthat the background sometimes shines through and is other casesis blended into itself (i.e., double-counting)./descfilter idoverFlood filterUnitsobjectBoundingBox x-5% y-5% width110% height110%feFlood flood-color#ffffff flood-opacity1 resultflood/feComposite inSourceGraphic in2BackgroundImage operatorover resultcomp/feMerge feMergeNode inflood/ feMergeNode incomp/ /feMerge/filterfilter idinFlood filterUnitsobjectBoundingBox x-5% y-5% width110% height110%feFlood flood-color#ffffff flood-opacity1 resultflood/feComposite inSourceGraphic in2BackgroundImage operatorin resultcomp/feMerge feMergeNode inflood/ feMergeNode incomp/ /feMerge/filterfilter idoutFlood filterUnitsobjectBoundingBox x-5% y-5% width110% height110%feFlood flood-color#ffffff flood-opacity1 resultflood/feComposite inSourceGraphic in2BackgroundImage operatorout resultcomp/feMerge feMergeNode inflood/ feMergeNode incomp/ /feMerge/filterfilter idatopFlood filterUnitsobjectBoundingBox x-5% y-5% width110% height110%feFlood flood-color#ffffff flood-opacity1 resultflood/feComposite inSourceGraphic in2BackgroundImage operatoratop resultcomp/feMerge feMergeNode inflood/ feMergeNode incomp/ /feMerge/filterfilter idxorFlood filterUnitsobjectBoundingBox x-5% y-5% width110% height110%feFlood flood-color#ffffff flood-opacity1 resultflood/feComposite inSourceGraphic in2BackgroundImage operatorxor resultcomp/feMerge feMergeNode inflood/ feMergeNode incomp/ /feMerge/filterfilter idarithmeticFlood filterUnitsobjectBoundingBoxx-5% y-5% width110% height110%feFlood flood-color#ffffff flood-opacity1 resultflood/feComposite inSourceGraphic in2BackgroundImage resultcompoperatorarithmetic k1.5 k2.5 k3.5 k4.5/feMerge feMergeNode inflood/ feMergeNode incomp/ /feMerge/filterfilter idoverNoFlood filterUnitsobjectBoundingBox x-5% y-5% width110% height110%feComposite inSourceGraphic in2BackgroundImage operatorover resultcomp//filterfilter idinNoFlood filterUnitsobjectBoundingBox x-5% y-5% width110% height110%feComposite inSourceGraphic in2BackgroundImage operatorin resultcomp//filterfilter idoutNoFlood filterUnitsobjectBoundingBox x-5% y-5% width110% height110%feComposite inSourceGraphic in2BackgroundImage operatorout resultcomp//filterfilter idatopNoFlood filterUnitsobjectBoundingBox x-5% y-5% width110% height110%feComposite inSourceGraphic in2BackgroundImage operatoratop resultcomp//filterfilter idxorNoFlood filterUnitsobjectBoundingBox x-5% y-5% width110% height110%feComposite inSourceGraphic in2BackgroundImage operatorxor resultcomp//filterfilter idarithmeticNoFlood filterUnitsobjectBoundingBoxx-5% y-5% width110% height110%feComposite inSourceGraphic in2BackgroundImage resultcompoperatorarithmetic k1.5 k2.5 k3.5 k4.5//filterpath idBlue100 dM 0 0 L 100 0 L 100 100 z fill#00ffff /path idRed100 dM 0 0 L 0 100 L 100 0 z fill#ff00ff /path idBlue50 dM 0 125 L 100 125 L 100 225 z fill#00ffff fill-opacity.5 /path idRed50 dM 0 125 L 0 225 L 100 125 z fill#ff00ff fill-opacity.5 /g idTwoBlueTrianglesuse xlink:href#Blue100/use xlink:href#Blue50//gg idBlueTrianglesuse transformtranslate(275,25) xlink:href#TwoBlueTriangles/use transformtranslate(400,25) xlink:href#TwoBlueTriangles/use transformtranslate(525,25) xlink:href#TwoBlueTriangles/use transformtranslate(650,25) xlink:href#TwoBlueTriangles/use transformtranslate(775,25) xlink:href#TwoBlueTriangles/use transformtranslate(900,25) xlink:href#TwoBlueTriangles//g/defsrect fillnone strokeblue x1 y1 width1098 height648/g font-familyVerdana font-size40 shape-renderingcrispEdgesdescRender the examples using the filters that draw on top ofan opaque white surface, thus obliterating the background./descg enable-backgroundnewtext x15 y75opacity 1.0/texttext x15 y115 font-size27(with feFlood)/texttext x15 y200opacity 0.5/texttext x15 y240 font-size27(with feFlood)/textuse xlink:href#BlueTriangles/g transformtranslate(275,25)use xlink:href#Red100 filterurl(#overFlood) /use xlink:href#Red50 filterurl(#overFlood) /text x5 y275over/text/gg transformtranslate(400,25)use xlink:href#Red100 filterurl(#inFlood) /use xlink:href#Red50 filterurl(#inFlood) /text x35 y275in/text/gg transformtranslate(525,25)use xlink:href#Red100 filterurl(#outFlood) /use xlink:href#Red50 filterurl(#outFlood) /text x15 y275out/text/gg transformtranslate(650,25)use xlink:href#Red100 filterurl(#atopFlood) /use xlink:href#Red50 filterurl(#atopFlood) /text x10 y275atop/text/gg transformtranslate(775,25)use xlink:href#Red100 filterurl(#xorFlood) /use xlink:href#Red50 filterurl(#xorFlood) /text x15 y275xor/text/gg transformtranslate(900,25)use xlink:href#Red100 filterurl(#arithmeticFlood) /use xlink:href#Red50 filterurl(#arithmeticFlood) /text x-25 y275arithmetic/text/g/gg transformtranslate(0,325) enable-backgroundnewdescRender the examples using the filters that do not obliteratethe background, thus sometimes causing the background to continueto appear in some cases, and in other cases the backgroundimage blends into itself (double-counting)./desctext x15 y75opacity 1.0/texttext x15 y115 font-size27(without feFlood)/texttext x15 y200opacity 0.5/texttext x15 y240 font-size27(without feFlood)/textuse xlink:href#BlueTriangles/g transformtranslate(275,25)use xlink:href#Red100 filterurl(#overNoFlood) /use xlink:href#Red50 filterurl(#overNoFlood) /text x5 y275over/text/gg transformtranslate(400,25)use xlink:href#Red100 filterurl(#inNoFlood) /use xlink:href#Red50 filterurl(#inNoFlood) /text x35 y275in/text/gg transformtranslate(525,25)use xlink:href#Red100 filterurl(#outNoFlood) /use xlink:href#Red50 filterurl(#outNoFlood) /text x15 y275out/text/gg transformtranslate(650,25)use xlink:href#Red100 filterurl(#atopNoFlood) /use xlink:href#Red50 filterurl(#atopNoFlood) /text x10 y275atop/text/gg transformtranslate(775,25)use xlink:href#Red100 filterurl(#xorNoFlood) /use xlink:href#Red50 filterurl(#xorNoFlood) /text x15 y275xor/text/gg transformtranslate(900,25)use xlink:href#Red100 filterurl(#arithmeticNoFlood) /use xlink:href#Red50 filterurl(#arithmeticNoFlood) /text x-25 y275arithmetic/text/g/g/g
/svg
