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CAD::Drawing::ManipulaUserGContributed PeCAD::Drawing::Manipulate::Graphics(3)

Name
       CAD::Drawing::Manipulate::Graphics - Gimp meets CAD?

AUTHOR
       Eric L. Wilhelm <ewilhelm at cpan dot org>

       http://scratchcomputing.com

COPYRIGHT
       This module is copyright	(C) 2004-2006 by Eric L. Wilhelm.  Portions
       copyright (C) 2003 by Eric L. Wilhelm and A. Zahner Co.

LICENSE
       This module is distributed under	the same terms as Perl.	 See the Perl
       source package for details.

       You may use this	software under one of the following licenses:

	 (1) GNU General Public	License
	   (found at http://www.gnu.org/copyleft/gpl.html)
	 (2) Artistic License
	   (found at http://www.perl.com/pub/language/misc/Artistic.html)

NO WARRANTY
       This software is	distributed with ABSOLUTELY NO WARRANTY.  The author,
       his former employer, and	any other contributors will in no way be held
       liable for any loss or damages resulting	from its use.

Modifications
       The source code of this module is made freely available and
       distributable under the GPL or Artistic License.	 Modifications to and
       use of this software must adhere	to one of these	licenses.  Changes to
       the code	should be noted	as such	and this notification (as well as the
       above copyright information) must remain	intact on all copies of	the
       code.

       Additionally, while the author is actively developing this code,
       notification of any intended changes or extensions would	be most
       helpful in avoiding repeated work for all parties involved.  Please
       contact the author with any such	development plans.

Methods
       All of these are	CAD::Drawing methods (I	force my own inheritance:)

   image_init
       Initialize the image at $addr based on the value	at the fullpath	key.
       This establishes	the contained Image::Magick object and loads the image
       into memory in the image_handle key.

	 $drw->image_init($addr);

   image_crop
       Crops an	image and its definition (actually, changes its	insert point)
       according to the	points given by	@crop_points (which maybe had better
       be within the object (but I don't really	sweat that.))

       @crop_points should be in world coordinates as follows:

	 @crop_points =	(
	   [$lower_left_x , $lower_left_y ],
	       [$upper_right_x,	$upper_right_y],
	       );
	 # note	that you can get these as
	 # ($drw->getExtentsRec($something))[0,2]

	 $drw->image_crop($addr, \@crop_points);

   image_scale
       Scales both the image and the definition	by $scale, starting at
       @base_point.

	 $drw->image_scale($addr, $scale, \@base_point);

   image_rotate
       This leaves the definition orthoganal, expands the underlying image
       object, and resets the insert point and size properties accordingly.

	 $drw->image_rotate($addr, $angle, \@point);

       The current implementation does not handle the change to	the image
       clipping	boundary.

   image_swap_context
       This involves a scaling of the image (the contexts should be aligned
       over each other at this point or	everything will	go to hell.)  Do your
       own move	/ rotate / crop	before calling this, because all this does is
       to scale	the underlying image object such that the vec property of the
       image definition	at $dest_addr can be used correctly.

       Note that this does not "swap" the image	to $dest_addr, rather it uses
       the image definition of $dest_addr to change the	image object and
       definition at $source_addr.

       Also note that the image	must fit completely inside (I think) of	the
       destination in order for	the composite to work correctly.

	 $drw->image_swap_context($source_addr,	$dest_addr);

perl v5.24.1			  2017-07CAD::Drawing::Manipulate::Graphics(3)

Name | AUTHOR | COPYRIGHT | LICENSE | NO WARRANTY | Modifications | Methods

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