Correct. And since FOP is still in the past and uses 72 instead of 96:
2.125 / 72 * 96 = 2.833 (pixels, which become dots when sent to the printer)
On 7/9/13 5:46 PM, Sergiu Dumitriu wrote:
So, a pixel is a fixed length that doesn't scale down with the DPI, it
should always be 1/96 inches. At 204 DPI that would translate into 2.125
dots.
On 07/09/2013 09:33 AM, Luis Bernardo wrote:
Lets look at the default case, that creates a 100x100 pixel image. The
default target dpi is 72, so 100/72 = 1.388888.
If you set the target dpi to 204, then the image needs to be 283x283
pixels because 204*1.38888 = 283.3333. Then a 1 pixel line needs to be
2.83 pixels to keep the scaling correct. Since you cannot have 2.83
pixel thickness in the monitor, it defaults to 3 pixels.
Is your goal to print (to paper) a line of a certain thickness? Then you
need to talk about dimensions (say, mm) not pixels.
On Tue, Jul 9, 2013 at 1:35 PM, Massimo <massimo.iasev...@snai.it
<mailto:massimo.iasev...@snai.it>> wrote:
Thanks for the answer.
I try to better explain the problem with an attached java example.
If you run the main method you should get two png image
. svgDefImage.png that contain a 1px thin line generated with
default target
resolution
. svg204Image.png that contain a 3px thin line generated with 204dpi
target
resolution
According to the svg tag, both files should contain 1px thin lines.
All images is generated with the same attached fo file.
Notice that I use a custom Java2D renderer.
I forgot to mention that I am using the fop trunk version.
Thanks.
Massimo.
SVGTest.java
<http://apache-fop.1065347.n5.nabble.com/file/n38858/SVGTest.java>
svgpixelsize.fo <http://svgpixelsize.fo>
<http://apache-fop.1065347.n5.nabble.com/file/n38858/svgpixelsize.fo>
svgDefImage.png
<http://apache-fop.1065347.n5.nabble.com/file/n38858/svgDefImage.png>
svg204Image.png
<http://apache-fop.1065347.n5.nabble.com/file/n38858/svg204Image.png>
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