Erm, pick interlace=false instead. That was just a test and I forgot to put that back<br><br><div class="gmail_quote">On 25 August 2010 13:22, Wim Vanbelle <span dir="ltr"><<a href="mailto:wimvanbelle@gmail.com">wimvanbelle@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Hi Steve,<br><br>I have this in my file:<br><br> OUTPUTFORMAT<br> NAME "AGGPNG"<div class="im">
<br> DRIVER "AGG/PNG"<br> EXTENSION "png"<br></div> MIMETYPE "image/png;mode=24bit;"<br>
IMAGEMODE RGBA<br> FORMATOPTION "INTERLACE=true"<div class="im"><br> FORMATOPTION "QUANTIZE_NEW=ON"<br> FORMATOPTION "QUANTIZE_FORCE=ON"<br>
</div> FORMATOPTION "QUANTIZE_DITHER=ON"<br>
FORMATOPTION "QUANTIZE_COLORS=256"<br> END<br><br>And in my layer, if you want opacity:<br><br> OPACITY 60<br><br><br>That should render nice lines :).<div><div></div><div class="h5">
<br><br><br><br><br><br>
<div class="gmail_quote">On 24 August 2010 21:16, Stephen Woodbridge <span dir="ltr"><<a href="mailto:woodbri@swoodbridge.com" target="_blank">woodbri@swoodbridge.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
If I want to generate RGBA transparent images using AGG, what should my OUTPUTFORMAT block look like?<br>
<br>
<br>
I was using this one for 8-bit images, but the anti aliasing was creating blackish artifacts along the rendered lines. Is there a way to avoid them?<br>
<br>
OUTPUTFORMAT<br>
NAME "agg_qn"<br>
DRIVER "AGG/PNG"<br>
EXTENSION "png"<br>
MIMETYPE "image/png"<br>
IMAGEMODE RGBA<br>
TRANSPARENT ON<br>
FORMATOPTION "INTERLACE=false"<br>
FORMATOPTION "QUANTIZE_NEW=ON"<br>
FORMATOPTION "QUANTIZE_FORCE=ON"<br>
FORMATOPTION "QUANTIZE_DITHER=OFF"<br>
FORMATOPTION "QUANTIZE_COLORS=37"<br>
FORMATOPTION "TRANSPARENT=ON"<br>
END<br>
<br>
Trying 32bit RGBA:<br>
<br>
IMAGECOLOR 0 0 0<br>
<br>
OUTPUTFORMAT<br>
NAME "agg_qn"<br>
DRIVER "AGG/PNG"<br>
EXTENSION "png"<br>
MIMETYPE "image/png"<br>
IMAGEMODE RGBA<br>
TRANSPARENT ON<br>
FORMATOPTION "TRANSPARENT=ON"<br>
END<br>
<br>
Generated black backgrounds and not transparent. Is it as simple as removing the IMAGECOLOR? I didn't try that.<br>
<br>
-Steve W<br>
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</blockquote></div><br>
</div></div></blockquote></div><br>