- NO WARRANTY
CAD::Drawing::Manipulate::Graphics - Gimp meets CAD?
Eric L. Wilhelm <ewilhelm at cpan dot org>
This module is copyright (C) 2004-2006 by Eric L. Wilhelm. Portions copyright (C) 2003 by Eric L. Wilhelm and A. Zahner Co.
This module is distributed under the same terms as Perl. See the Perl source package for details.
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(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)
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All of these are CAD::Drawing methods (I force my own inheritance:)
Initialize the image at $addr based on the value at the fullpath key. This establishes the contained Image::Magick object and loads the image into memory in the image_handle key.
Crops an image and its definition (actually, changes its insert point) according to the points given by @crop_points (which maybe had better be within the object (but I don't really sweat that.))
@crop_points should be in world coordinates as follows:
@crop_points = ( [$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);
Scales both the image and the definition by $scale, starting at @base_point.
$drw->image_scale($addr, $scale, \@base_point);
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.
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.