Legacy ImageMagick Discussions Archive

Hello,

So I've begun to explore the pseudo file formats, they are much fun, particularly the label:* pseudo format. MSL support for the pseudo file formats is pretty good, however there is only one hole I have managed to find, and it is in label:*

The imagemagick command line tutorials describe ...

hello,

There is a bug pertaining to images with more than one crop tag in them. Consider the code


<?xml version="1.0"?>
<group>
<image>
<read filename="horsefly.jpg" />
<crop geometry="250x250"/>
<rotate degrees="90"/>
<crop geometry="100x100"/>
</image>
<write filename="msl_test.png ...

Hello,

Is there any way to list the supported pseudo-image formats, built-in images, and built-in patterns using a command like `convert -list pattern`? `convert -list list` didn't return anything that looked like I may be able to use it for my purpose.

http://www.imagemagick.org/script/formats ...

Hello,

For a project I am extensively using MSL to alter images on the fly in a web based environment. It is desirable to be able to optimize the file size of an image as losslessly as possible, something like `convert file -strip file` or `convert file +profile "*" file` from within MSL.

MSL does ...

There has been no response to this thread.

Can somebody tell me the status?

If this request reflects a misunderstanding on my part, can someone explain to me the proper way to achieve a `convert file -gravity Center -crop 250x250+0+0` using msl?

Thank you.

I reported this issue in a different thread, but I am moving it to its own thread, to ensure the issue gets attention.

A patch which appeared in today's beta allows gravity to be <set>, however <crop> does not implement gravity at this time.

in msl.c at line 2141, the function ParsePageGeometry is ...

This problem involves specifying a single dimension for <crop> (height or width but not both)

consider
<crop geometry='x250'/>

it will create and image with a height of 250 and the original width.

however
<crop geometry='250x'/>
will not create an image with a width of 250 and the original ...

I figured it out.

at msl.c line 2141 there is the function call
flags=ParsePageGeometry(msl_info->image[n],value,
&geometry,&exception);


changing this to

flags=ParseGravityGeometry(msl_info->image[n],value,
&geometry,&exception);


will give the behaviour I expected, and fixes my issue ...

It seems as if gravity is recognized now as a <set> option, however I'm not sure if it works correctly.

Consider the following
<set gravity='Center' />
<crop geometry='250x250+0+0'/>

This doesn't seem to do what is expected, which (if I understand correctly) should be the equivalent of

convert ...

Thank you!

I imagine the code will be available at ftp://ftp.imagemagick.org/pub/ImageMagick/beta/ , no?

I'll give it a whirl and post back on the status.

Hello,

I have read in various places that the msl language hasn't implemented all the features of PerlMagick yet, because of lack of demand -- however that features would implemented upon request "usually within a day."

There is currently no way to set gravity (ie: <set gravity='Center'/> ), which ...