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Posted to users@pdfbox.apache.org by Ján Kaššovic <ja...@gmail.com> on 2017/01/12 12:38:13 UTC
Drawing rotated image in a content stream
Hi,
I consider the following more as a bug/feature request, but since I am not
sure I start here. I have ended up with a need to use deprecated
PDPageContentStream.drawXObject since I need to rotate the PDImageXObject
which I am drawing. The nondeprecated methods just hide the transformation
inside, which I find unfortunate.
If there is a better way to do so, please let me know.
Jan
Re: Drawing rotated image in a content stream
Posted by Tilman Hausherr <TH...@t-online.de>.
Am 12.01.2017 um 18:17 schrieb Tilman Hausherr:
> Am 12.01.2017 um 13:38 schrieb J�n Ka\u0161\u0161ovic:
>> Hi,
>>
>> I consider the following more as a bug/feature request, but since I
>> am not
>> sure I start here. I have ended up with a need to use deprecated
>> PDPageContentStream.drawXObject since I need to rotate the
>> PDImageXObject
>> which I am drawing. The nondeprecated methods just hide the
>> transformation
>> inside, which I find unfortunate.
>> If there is a better way to do so, please let me know.
>
> This is more a documentation problem.... I've improved the javadoc for
> next version.
>
> call
>
> cs.drawImage(img, Matrix.getRotateInstance(Math.toRadians(45), ...,
> ....));
>
>
> note that rotation is done around (0,0) so you need to do a
> translation too
Oops it's more complex, you need to scale for the image size too. So you
need to pass a matrix that has both the rotation, the translation and
the scale.
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Re: Drawing rotated image in a content stream
Posted by Tilman Hausherr <TH...@t-online.de>.
Am 12.01.2017 um 13:38 schrieb J�n Ka\u0161\u0161ovic:
> Hi,
>
> I consider the following more as a bug/feature request, but since I am not
> sure I start here. I have ended up with a need to use deprecated
> PDPageContentStream.drawXObject since I need to rotate the PDImageXObject
> which I am drawing. The nondeprecated methods just hide the transformation
> inside, which I find unfortunate.
> If there is a better way to do so, please let me know.
This is more a documentation problem.... I've improved the javadoc for
next version.
call
cs.drawImage(img, Matrix.getRotateInstance(Math.toRadians(45), ..., ....));
note that rotation is done around (0,0) so you need to do a translation too
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