Re: Rendering precision

2010-02-08 Thread Johan Stuyts 

I'd say you should be able to achieve a similar similar result by
tweaking the content to use the intended rendering properties [1]
configured for quality. ;-)


I didn't know about these and I am unable to find them in Inkscape after a  
quick check. I see their potential, but unless they are easy to set in  
drawing programs they are of no use.



... Could you
raise a request for enhancement for the SVG Rasterizer in the bug
tracker? Please include a link to this mailing list thread. This
bookmark [2] should help if you have any difficulties! ;-)


Done:
https://issues.apache.org/bugzilla/show_bug.cgi?id=48702

Regards,

Johan

-
To unsubscribe, e-mail: batik-users-unsubscr...@xmlgraphics.apache.org
For additional commands, e-mail: batik-users-h...@xmlgraphics.apache.org

Re: Rendering precision

2010-02-07 Thread Helder Magalhães 
Hi Johan,


 I had the same problem and couldn't find any quality settings. I did find a
 protected method of transcoders: createRenderer(), which returns an
 ImageRenderer. You can set Java2D rendering hints on this class. By creating
 a simple subclass you can tell the ImageRenderer to use the highest possible
 quality:
[code snippet]

Thanks for sharing! :-)

I'd say you should be able to achieve a similar similar result by
tweaking the content to use the intended rendering properties [1]
configured for quality. ;-)

Nevertheless, it sounds interesting to be able to set a rendering hint
in order to force different quality settings:
 * highest (for printing/perfection);
 * lowest (for performance/reduce memory consumption) .
I'd say this was interesting to see in the framework. (Unless I'm
missing something and this is possibly already covered...) Could you
raise a request for enhancement for the SVG Rasterizer in the bug
tracker? Please include a link to this mailing list thread. This
bookmark [2] should help if you have any difficulties! ;-)

The provided code snippet is pretty similar to what's already being
done in the transcoder classes, so I'd even invite you to rehearse a
patch! :-)


 Regards,

 Johan

Cheers,
 Helder


[1] http://www.w3.org/TR/SVG/painting.html#RenderingProperties
[2] 
https://issues.apache.org/bugzilla/enter_bug.cgi?bug_file_loc=http%3A%2F%2Fold.nabble.com%2FRendering-precision-td27459379.htmlbug_severity=enhancementcomponent=SVG%20Rasterizerform_name=enter_bugop_sys=Allpriority=P4product=Batikrep_platform=PCtarget_milestone=---version=1.8

-
To unsubscribe, e-mail: batik-users-unsubscr...@xmlgraphics.apache.org
For additional commands, e-mail: batik-users-h...@xmlgraphics.apache.org

RE: Rendering precision

2010-02-05 Thread Jan Tošovský 
Hi Johan,

 I had the same problem and couldn't find any quality 
 settings. I did find  
 a protected method of transcoders: createRenderer(), which 
 returns an  
 ImageRenderer. You can set Java2D rendering hints on this class. By  
 creating a simple subclass you can tell the ImageRenderer to use the  
 highest possible quality:
 
 PNGTranscoder t = new PNGTranscoder()
 {
  @Override
  protected ImageRenderer createRenderer()
  {
  ImageRenderer r = super.createRenderer();
 
  RenderingHints rh = r.getRenderingHints();
 
  rh.add(new RenderingHints(...);
...
...
  r.setRenderingHints(rh);
 
  return r;
  }
 };

thanks for this quick and valuable response! Now circles are realy circles
;-) 
I raise my hat to you.

Regards,
Jan


-
To unsubscribe, e-mail: batik-users-unsubscr...@xmlgraphics.apache.org
For additional commands, e-mail: batik-users-h...@xmlgraphics.apache.org

Re: Rendering precision

2010-02-04 Thread Johan Stuyts 

Hi Jan,

I had the same problem and couldn't find any quality settings. I did find  
a protected method of transcoders: createRenderer(), which returns an  
ImageRenderer. You can set Java2D rendering hints on this class. By  
creating a simple subclass you can tell the ImageRenderer to use the  
highest possible quality:



PNGTranscoder t = new PNGTranscoder()
{
@Override
protected ImageRenderer createRenderer()
{
ImageRenderer r = super.createRenderer();

RenderingHints rh = r.getRenderingHints();

rh.add(new RenderingHints(RenderingHints.KEY_ALPHA_INTERPOLATION,
RenderingHints.VALUE_ALPHA_INTERPOLATION_QUALITY));
rh.add(new RenderingHints(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BICUBIC));

rh.add(new RenderingHints(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON));

rh.add(new RenderingHints(RenderingHints.KEY_COLOR_RENDERING,
RenderingHints.VALUE_COLOR_RENDER_QUALITY));
rh.add(new RenderingHints(RenderingHints.KEY_DITHERING,
RenderingHints.VALUE_DITHER_DISABLE));

rh.add(new RenderingHints(RenderingHints.KEY_RENDERING,
RenderingHints.VALUE_RENDER_QUALITY));

rh.add(new RenderingHints(RenderingHints.KEY_STROKE_CONTROL,
RenderingHints.VALUE_STROKE_PURE));

rh.add(new RenderingHints(RenderingHints.KEY_FRACTIONALMETRICS,
RenderingHints.VALUE_FRACTIONALMETRICS_ON));
rh.add(new RenderingHints(RenderingHints.KEY_TEXT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_OFF));

r.setRenderingHints(rh);

return r;
}
};


Regards,

Johan


-
To unsubscribe, e-mail: batik-users-unsubscr...@xmlgraphics.apache.org
For additional commands, e-mail: batik-users-h...@xmlgraphics.apache.org