【发布时间】:2010-11-08 20:25:24
【问题描述】:
有没有办法将 .SVG 从其当前大小(数千像素)重新缩放到更小的大小?我试过 ImageMagick,但它对 SVG 渐变的支持太弱了,没用。
目的是解决渲染库中的一个错误,该错误有时会导致具有大像素大小的 svg 分配大光栅(在最终平滑地重新缩放以进行实际显示之前)。
例如,如何更改这个 1024x1024px svg:
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!-- Created with Inkscape (http://www.inkscape.org/) -->
<svg
xmlns:dc="http://purl.org/dc/elements/1.1/"
xmlns:cc="http://creativecommons.org/ns#"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:svg="http://www.w3.org/2000/svg"
xmlns="http://www.w3.org/2000/svg"
xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
width="1024.09"
height="1024.36"
id="svg2"
sodipodi:version="0.32"
inkscape:version="0.46"
version="1.0"
sodipodi:docname="tst.svg"
inkscape:output_extension="org.inkscape.output.svg.inkscape">
<defs
id="defs4">
<linearGradient
inkscape:collect="always"
id="linearGradient2454">
<stop
style="stop-color:#800000;stop-opacity:1;"
offset="0"
id="stop2456" />
<stop
style="stop-color:#800000;stop-opacity:0;"
offset="1"
id="stop2458" />
</linearGradient>
<inkscape:perspective
sodipodi:type="inkscape:persp3d"
inkscape:vp_x="99.717407 : 889.90313 : 1"
inkscape:vp_y="7.5659029e-15 : 92.21017 : 0"
inkscape:vp_z="191.66118 : 889.90313 : 1"
inkscape:persp3d-origin="145.68929 : 873.73005 : 1"
id="perspective10" />
<radialGradient
inkscape:collect="always"
xlink:href="#linearGradient2454"
id="radialGradient2460"
cx="4022.8572"
cy="5451.2656"
fx="4022.8572"
fy="5451.2656"
r="3559.865"
gradientTransform="matrix(-0.1071067,-0.1166362,0.1377765,-7.0459663e-2,276.61943,1452.439)"
gradientUnits="userSpaceOnUse" />
</defs>
<sodipodi:namedview
id="base"
pagecolor="#ffffff"
bordercolor="#666666"
borderopacity="1.0"
gridtolerance="10000"
guidetolerance="10"
objecttolerance="10"
inkscape:pageopacity="0.0"
inkscape:pageshadow="2"
inkscape:zoom="0.49497475"
inkscape:cx="403.89421"
inkscape:cy="477.41913"
inkscape:document-units="px"
inkscape:current-layer="layer1"
showgrid="false"
inkscape:window-width="1680"
inkscape:window-height="978"
inkscape:window-x="1307"
inkscape:window-y="24" />
<metadata
id="metadata7">
<rdf:RDF>
<cc:Work
rdf:about="">
<dc:format>image/svg+xml</dc:format>
<dc:type
rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
</cc:Work>
</rdf:RDF>
</metadata>
<g
inkscape:label="Layer 1"
inkscape:groupmode="layer"
id="layer1">
<rect
style="fill:#0000ff;fill-rule:evenodd;stroke:#000000;stroke-width:0.10674229px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
id="rect2403"
width="836.00311"
height="815.66479"
x="144.90677"
y="154.41733" />
<path
style="fill:url(#radialGradient2460);fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.10674229px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
d="M 492.29996,1003.8047 C 992.20722,1001.6971 989.38289,999.5894 992.20722,997.48173 C 995.03156,995.37408 992.20722,124.91007 992.20722,124.91007 L 113.83908,124.91007 L 122.31209,1012.2353 L 492.29996,1003.8047 z"
id="path2382" />
<g
sodipodi:type="inkscape:box3d"
style="fill:#800000;fill-opacity:1"
id="g2392"
inkscape:perspectiveID="#perspective10"
inkscape:corner0="-0.94081067 : 0.17266027 : 0 : 1"
inkscape:corner7="-0.94348241 : 0.15857352 : 0.25 : 1">
<path
sodipodi:type="inkscape:box3dside"
id="path2402"
style="fill:#afafde;fill-rule:evenodd;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:round;stroke-opacity:1"
inkscape:box3dsidetype="13"
d="M 876.40947,160.66071 L 913.12582,161.89944 L 324.68925,139.51689 L 322.74524,139.47316 L 876.40947,160.66071 z" />
<path
sodipodi:type="inkscape:box3dside"
id="path2400"
style="fill:#d7d7ff;fill-rule:evenodd;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:round;stroke-opacity:1"
inkscape:box3dsidetype="14"
d="M 913.12582,138.91648 L 913.12582,161.89944 L 324.68925,139.51689 L 324.68925,135.27915 L 913.12582,138.91648 z" />
<path
sodipodi:type="inkscape:box3dside"
id="path2404"
style="fill:#e9e9ff;fill-rule:evenodd;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:round;stroke-opacity:1"
inkscape:box3dsidetype="11"
d="M 322.74524,135.27204 L 324.68925,135.27915 L 324.68925,139.51689 L 322.74524,139.47316 L 322.74524,135.27204 z" />
<path
sodipodi:type="inkscape:box3dside"
id="path2396"
style="fill:#4d4d9f;fill-rule:evenodd;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:round;stroke-opacity:1"
inkscape:box3dsidetype="5"
d="M 876.40947,138.71518 L 913.12582,138.91648 L 324.68925,135.27915 L 322.74524,135.27204 L 876.40947,138.71518 z" />
<path
sodipodi:type="inkscape:box3dside"
id="path2394"
style="fill:#353564;fill-rule:evenodd;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:round;stroke-opacity:1"
inkscape:box3dsidetype="6"
d="M 876.40947,138.71518 L 876.40947,160.66071 L 322.74524,139.47316 L 322.74524,135.27204 L 876.40947,138.71518 z" />
<path
sodipodi:type="inkscape:box3dside"
id="path2398"
style="fill:#8686bf;fill-rule:evenodd;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:round;stroke-opacity:1"
inkscape:box3dsidetype="3"
d="M 876.40947,138.71518 L 913.12582,138.91648 L 913.12582,161.89944 L 876.40947,160.66071 L 876.40947,138.71518 z" />
</g>
<rect
style="fill:#800000;fill-opacity:1"
id="rect2448"
width="36.716354"
height="14.753627"
x="432.98892"
y="103.83346" />
<rect
style="fill:#800000;fill-opacity:1"
id="rect2450"
width="22.594679"
height="16.861288"
x="133.60942"
y="101.7258" />
<rect
style="fill:#800000;fill-opacity:1"
id="rect2452"
width="22.594679"
height="6.3229828"
x="949.84222"
y="97.510475" />
</g>
</svg>
到 102.4x102.4 SVG?如果它不丢掉 SVG 的片段,那就太好了(这排除了 libsvgbin2,尽管它很接近)。
【问题讨论】:
-
“调整 SVG 大小”是什么意思?由于它是矢量描述(S 表示“可缩放”),因此没有以像素为单位的实际大小......例如,如果您想在浏览器中更改 SVG 显示的大小(以像素为单位),您可以只需更改
-
@ThibThib - 通过调整大小,我的意思是更改根元素的大小高度、宽度和视图框属性,以及 svg 中所有组/路径的坐标参数。单纯的客户端翻译是行不通的,因为所讨论的库与 OSX 上的 Java 1.5.0_19 存在病态交互,如果这些属性最初太大,则会导致径向渐变分配大量内存。
-
改变根元素的高宽属性还不够?
-
@ThibThib - 显然这不会改变 svg 中路径的大小,只会导致 svg 渲染器混淆。 svg 中的所有坐标值也必须更改(这可以在 inkscape gui 中轻松完成,但我需要一些可以编写脚本的东西)。
-
请发布相关 SVG 的精简示例,以帮助人们理解问题。或者您提到的 OSX 上 Java 中的(假设已知,报告?)错误的链接。