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Posted to batik-users@xmlgraphics.apache.org by "K, Balamurugan (CORP, GEITC)" <Ba...@geind.ge.com> on 2002/03/07 04:53:30 UTC
Getting rendered image from JSVGCanvas
Dear friends,
I am new to Batik. I need help from u guys. I have a requirement. I
have to show vector graphics to get high resolution. I need to create icons
which will have images. When i resize that icon i will lose the resolution
if the image is gif or any raster based. JSVGCanvas is the best one for that
but for each icon i can't use JSVGCanvas. It is very slow.
What i am thinking to solve this problem is, i will use svg. For
that i need to know how to acces the rendered image object from JSVGCanvas.
If i know how to do that each time when i resize i will get the new rendered
image from JSVGCanvas in that way i wont lose the resolution. I think this
will be more useful for different projects as well. It will be greatful if
any one show me the right direction.
Thanks in advance
Bala
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Use of SVG DTD in Batik
Posted by Milan Trninic <mt...@galdosinc.com>.
Hello,
I am interested in exact specification of how SVG DTD is used in processing svg contents. In particular:
1. Is it the rule that batik loads svg dtd on processing. (either remote or local)?
2. Can it be avoided?
3. What are the plans for future - mandatory or not?
4. Why does it do that? Doesn't it make sense on some occasions to allow unvalidated processing of svg?
Thank you a lot
Milan Trninic
Getting rendered image from JSVGCanvas
Posted by Thomas E Deweese <th...@kodak.com>.
>>>>> "BK" == K, Balamurugan (CORP, GEITC) <Ba...@geind.ge.com> writes:
BK> I am new to Batik. I need help from u guys. I have a
BK> requirement. I have to show vector graphics to get high
BK> resolution. I need to create icons which will have images. When i
BK> resize that icon i will lose the resolution if the image is gif or
BK> any raster based. JSVGCanvas is the best one for that but for each
BK> icon i can't use JSVGCanvas. It is very slow. What i am thinking
BK> to solve this problem is, i will use svg. For that i need to know
BK> how to acces the rendered image object from JSVGCanvas. If i know
BK> how to do that each time when i resize i will get the new rendered
BK> image from JSVGCanvas in that way i wont lose the resolution. I
BK> think this will be more useful for different projects as well. It
BK> will be greatful if any one show me the right direction.
I don't think I fully understand what you are asking for. But it
sounds like you want to put SVG icons over a very high resolution
image. If your High resolution image is done using RenderableImage
(say from JAI). You should be able to fairly easily construct a
single SVG document that has that image in the background (by
extending the image tag: see extending Batik on our web site). And
then has a bunch of use's or what ever to place the icons over the
image. This would have JSVGCanvas display everything (instead of a
JSVG canvas per icon).
Alternatively, You can build the GVT tree (either use the
JSVGCanvas since it has a really simple interface or look at the
Slideshow application: ...batik.apps.slideshow) and ask the GVT tree
(batik.gvt.GraphicsNode) for it's RenderableImage
(getGraphicsNodeRable, this returns a Filter but that just extends
java.awt.image.renderable.RenderableImage with a few extra methods).
You can then call createRendering with an appropriate RenderContext to
get proper renderings.
BK> Thanks in advance Bala
Hope the above is helpful.
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RE: Benchmark Test
Posted by Tangent <ta...@usa.net>.
Thanks for suggestions, I chose mathMetal, bookOfKells and
textRotateShadows for my test, and I am still running it.
I am new to Batik, and I wish I could understand what Thomas means ...
The lower core modules are still way above my head at the moment. But I
would like to know the dependencies of Batik Transcoder as I am
considering porting it to C# eventually.
Thanks!
- Tangent
> -----Original Message-----
> From: Thomas E Deweese [mailto:thomas.deweese@kodak.com]
> Sent: Thursday, March 07, 2002 7:30 AM
> To: Batik Users
> Cc: tangent@usa.net
> Subject: RE: Benchmark Test
>
>
> >>>>> "TK" == Thierry Kormann <tk...@ilog.fr> writes:
>
> >> I am going to run some extremely high-resolution
> rasterization test
> >> using Batik. I would like to test it against couple SVG
> files that
> >> has various complexity. Any suggestions?
>
> TK> There are some documents in the samples directory such
> the maps that
> TK> seem a good candidate for that. I also think your benchmark can
> TK> separate documents with or without filters or other 'expensive'
> TK> effects.
>
> I would also point out that the way things get rendered
> internally is much more flexable than the way the current
> rasterizer does things (get the whole image as a
> BufferedImage). If I were interested in doing very high
> resolution rasterization I would grab the root GVT elements
> RenderableImage representation (getGraphicsNodeRable) then
> create a RenderedImage from that (createRendering). Then I
> would use the tile interface on that object to stream the
> image to a file.
>
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>
>
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RE: Benchmark Test
Posted by Thomas E Deweese <th...@kodak.com>.
>>>>> "TK" == Thierry Kormann <tk...@ilog.fr> writes:
>> I am going to run some extremely high-resolution rasterization test
>> using Batik. I would like to test it against couple SVG files that
>> has various complexity. Any suggestions?
TK> There are some documents in the samples directory such the maps
TK> that seem a good candidate for that. I also think your benchmark
TK> can separate documents with or without filters or other
TK> 'expensive' effects.
I would also point out that the way things get rendered internally
is much more flexable than the way the current rasterizer does things
(get the whole image as a BufferedImage). If I were interested in
doing very high resolution rasterization I would grab the root GVT
elements RenderableImage representation (getGraphicsNodeRable) then
create a RenderedImage from that (createRendering). Then I would use
the tile interface on that object to stream the image to a file.
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RE: Benchmark Test
Posted by Thierry Kormann <tk...@ilog.fr>.
> I am going to run some extremely high-resolution rasterization test
> using Batik. I would like to test it against couple SVG files that has
> various complexity. Any suggestions?
There are some documents in the samples directory such the maps that seem a
good candidate for that. I also think your benchmark can separate documents
with or without filters or other 'expensive' effects.
Thierry.
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Benchmark Test
Posted by Tangent <ta...@usa.net>.
Hi,
I am going to run some extremely high-resolution rasterization test
using Batik. I would like to test it against couple SVG files that has
various complexity. Any suggestions?
- Tangent
P.S. The test will involve the comparison of rasterizing the SVG
entirely, and slicing it to couple parts and one part at a time. I
believe the second one requires less memory and could out perform the
first one in some circumstance.
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