Quick question, and I really feel like a goon for asking it.
I'm using Image::Magick to resize pictures - follows is a snippet of a function I'm running and the invocation of it:

sub resize {
        my $img=shift;
        my $size=shift;
    my $geometry;
        
        if ( orientation($img)=="portrait" ){
                  $geometry="x" . $size;
        } else {
                 $geometry=$size;
        }
        print "RESIZE: Geometry is $geometry, received $size, and it s
+hould be $sizes{$size}, pic is $img<BR>";
        $img->Resize(geometry=>$geometry);
        return $img;
}

[download]

What I'm seeing, when calling it like so:
        my $tmppic=resize($pic,$sizes{$size});
and:
            $ret=$tmppic->Write("jpeg:$dest");
        my $tmpheight=$pic->Get('columns');
        print "Orig: $tmpheight . Write to $tmppic $dest returned $ret
+<BR>";

[download]
Is rather troubling $pic itself changes the size, it seems that sub resize() received a reference instead of a value, but try as I might I couldn't copy the thing properly, including creating a new object and assigning.

I'm sure I'm missing something awfully basic here. Anyone feel like slapping me with some clue?

Thanks,
Nir.

In reply to Object passed by reference or value? by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.