Hi Ryan,
It looks like there is a shift of the center of the radial gradient by
~.5 a pixel
relative to the geometry. Feel free to register a bug.
Thomas
This version makes it a little clearer:
<?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"
version="1.1"
width="16"
height="16"
id="svg6152"
shape-rendering="geometricPrecision"
color-rendering="optimizeQuality"
inkscape:version="0.48.2 r9819"
sodipodi:docname="cluster.svg">
<sodipodi:namedview
pagecolor="#ffffff"
bordercolor="#666666"
borderopacity="1"
objecttolerance="10"
gridtolerance="10"
guidetolerance="10"
inkscape:pageopacity="0"
inkscape:pageshadow="2"
inkscape:window-width="1680"
inkscape:window-height="988"
id="namedview14"
showgrid="false"
inkscape:zoom="48.048722"
inkscape:cx="5.5129408"
inkscape:cy="8"
inkscape:window-x="-8"
inkscape:window-y="-8"
inkscape:window-maximized="1"
inkscape:current-layer="svg6152" />
<defs
id="defs6154">
<linearGradient
id="linearGradient6830">
<stop
id="stop6832"
style="stop-color:#eeb111;stop-opacity:1"
offset="0" />
<stop
id="stop6838"
style="stop-color:#eeb111;stop-opacity:1"
offset="0.80000001" />
<stop
id="stop6834"
style="stop-color:#eeb111;stop-opacity:0"
offset="1" />
</linearGradient>
<radialGradient
cx="8.4242573"
cy="7.3054457"
r="6.0816832"
fx="8.4242573"
fy="7.3054457"
id="radialGradient6836"
xlink:href="#linearGradient6830"
gradientUnits="userSpaceOnUse"
gradientTransform="matrix(1,0,0,1.037037,0,-0.27057189)" />
</defs>
<metadata
id="metadata6157">
<rdf:RDF>
<cc:Work
rdf:about="">
<dc:format>image/svg+xml</dc:format>
<dc:type
rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
<dc:title />
</cc:Work>
</rdf:RDF>
</metadata>
<g
id="layer1"
style="display:inline"
transform="matrix(1,0,0,0.99971334,0,0.0022932)">
<path
d="m 14.50594,7.3054457 a 6.0816832,6.3069305 0 1 1
-12.1633659,0 6.0816832,6.3069305 0 1 1 12.1633659,0 z"
transform="matrix(1.3154253,0,0,1.2684459,-3.0814812,-1.2665626)"
id="path6806"
style="fill:#000;fill-opacity:1"
inkscape:connector-curvature="0" />
<path
d="m 14.50594,7.3054457 a 6.0816832,6.3069305 0 1 1
-12.1633659,0 6.0816832,6.3069305 0 1 1 12.1633659,0 z"
transform="matrix(1.3154253,0,0,1.2684459,-3.0814812,-1.2665626)"
id="path6806"
style="fill:url(#radialGradient6836);fill-opacity:1"
inkscape:connector-curvature="0" />
</g>
<g
id="layer2"
style="display:inline"
transform="matrix(1,0,0,0.99951699,0,0.0038645)">
<path
d="m 11.082178,7.3730197 a 1.2839109,1.1487623 0 1 1
-2.5678215,0 1.2839109,1.1487623 0 1 1 2.5678215,0 z"
transform="matrix(4.6732216,0.0143752,0,5.2229872,-37.789475,-30.65004)"
id="path6670"
style="fill:#f7d888;fill-opacity:1"
inkscape:connector-curvature="0" />
</g>
<g transform="matrix(1,0,0,0.99971334,0,0.0022932)">
<g transform="matrix(1.3154253,0,0,1.2684459,-3.0814812,-1.2665626)">
<circle
cx="8.4242573"
cy="7.3054457"
r="1"
fill="#F00"
transform="matrix(1,0,0,1.037037,0,-0.27057189)"/>
</g>
</g>
</svg>
On Mar 28, 2012, at 5:03 PM, Ryan Gustafson wrote:
> The following SVG is essentially two circles centered on top of each
> other. It has radial symmetry. However, when I rasterize this to a
> 16x16 image, I get something quite obviously lacking radial symmetry.
> It appears as though things are shifted to the upper left toward
> (0,0), and smells to me like an integer truncation issue. If I
> increase the raster dimensions, the problem becomes less pronounced,
> and ultimately unnoticeable at higher resolutions (e.g. 512x512). I
> can likely work around this by rasterizing at high resolution and then
> scaling down to my desired resolution.
>
> This was with Batik 1.7, on with Oracle Java 1.6.0_22 and 1.6.0_29 on Windows
> 7.
>
> For reference, Inkscape will export a raster that appears correct.
>
> Regards,
> Ryan Gustafson
>
> ---
>
> <?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"
> version="1.1"
> width="16"
> height="16"
> id="svg6152"
> inkscape:version="0.48.2 r9819"
> sodipodi:docname="cluster.svg">
> <sodipodi:namedview
> pagecolor="#ffffff"
> bordercolor="#666666"
> borderopacity="1"
> objecttolerance="10"
> gridtolerance="10"
> guidetolerance="10"
> inkscape:pageopacity="0"
> inkscape:pageshadow="2"
> inkscape:window-width="1680"
> inkscape:window-height="988"
> id="namedview14"
> showgrid="false"
> inkscape:zoom="48.048722"
> inkscape:cx="5.5129408"
> inkscape:cy="8"
> inkscape:window-x="-8"
> inkscape:window-y="-8"
> inkscape:window-maximized="1"
> inkscape:current-layer="svg6152" />
> <defs
> id="defs6154">
> <linearGradient
> id="linearGradient6830">
> <stop
> id="stop6832"
> style="stop-color:#eeb111;stop-opacity:1"
> offset="0" />
> <stop
> id="stop6838"
> style="stop-color:#eeb111;stop-opacity:1"
> offset="0.80000001" />
> <stop
> id="stop6834"
> style="stop-color:#eeb111;stop-opacity:0"
> offset="1" />
> </linearGradient>
> <radialGradient
> cx="8.4242573"
> cy="7.3054457"
> r="6.0816832"
> fx="8.4242573"
> fy="7.3054457"
> id="radialGradient6836"
> xlink:href="#linearGradient6830"
> gradientUnits="userSpaceOnUse"
> gradientTransform="matrix(1,0,0,1.037037,0,-0.27057189)" />
> </defs>
> <metadata
> id="metadata6157">
> <rdf:RDF>
> <cc:Work
> rdf:about="">
> <dc:format>image/svg+xml</dc:format>
> <dc:type
> rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
> <dc:title />
> </cc:Work>
> </rdf:RDF>
> </metadata>
> <g
> id="layer1"
> style="display:inline"
> transform="matrix(1,0,0,0.99971334,0,0.0022932)">
> <path
> d="m 14.50594,7.3054457 a 6.0816832,6.3069305 0 1 1
> -12.1633659,0 6.0816832,6.3069305 0 1 1 12.1633659,0 z"
> transform="matrix(1.3154253,0,0,1.2684459,-3.0814812,-1.2665626)"
> id="path6806"
> style="fill:url(#radialGradient6836);fill-opacity:1"
> inkscape:connector-curvature="0" />
> </g>
> <g
> id="layer2"
> style="display:inline"
> transform="matrix(1,0,0,0.99951699,0,0.0038645)">
> <path
> d="m 11.082178,7.3730197 a 1.2839109,1.1487623 0 1 1
> -2.5678215,0 1.2839109,1.1487623 0 1 1 2.5678215,0 z"
>
> transform="matrix(4.6732216,0.0143752,0,5.2229872,-37.789475,-30.65004)"
> id="path6670"
> style="fill:#f7d888;fill-opacity:1"
> inkscape:connector-curvature="0" />
> </g>
> </svg>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: [email protected]
> For additional commands, e-mail: [email protected]
>
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]