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tribal75
Newbie
Joined: 27 Jul 2004
Posts: 2
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 Posted: Tue Jul 27, 2004 11:36 am Post subject: Wrong Colours when cropping |
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Hi to everyone,
I downloaded this amazing class and I used under different platforms for my works. But now I'm getting mad over this absurd problem. I made an upload utility that takes an image file, put in a dir and then create a Thumbnail. If the "usertype" of the image is "stabile" after resizing it's cropped with crop canvas.
Here's the code:
| PHP: | <?php function buildThumbs($filename, $img_type, $extension){
if ($img_type=="stabile"){
$fileOrigine=DIR_IMGS_STABILI.$filename;
$fileDestinazione=DIR_IMGS_STABILI."_thumbs/Thumb_".$filename;
} else {
if ($extension=="mobi_") return;
$filename = $extension.$filename;
$fileOrigine=DIR_IMGS_APPARTAMENTI.$filename;
$fileDestinazione=DIR_IMGS_APPARTAMENTI."_thumbs/Thumb_".$filename;
}
list($l, $a) = GetImageSize($fileOrigine);
if ($l+$a==0 || $l+$a >5000) {
return "Thumb_none.jpg";
}
if ($img_type=="appartamento"){
$larghezza = min($l, LARG_THUMB);
$altezza = floor($larghezza * $a / $l);
if ($altezza > ALTE_THUMB) {
$larghezza = floor($larghezza * ALTE_THUMB / $altezza);
$altezza = ALTE_THUMB;}
}
else {
if ($l==min($l, $a)){
$larghezza = WIDTH_STABILE;
$altezza = floor($larghezza * $a / $l);
} else { $altezza = WIDTH_STABILE;
$larghezza = floor($altezza * $l / $a);
}
}
$vi = ImageCreate($larghezza, $altezza);
$tipo = substr($filename, -3);
if (strtolower($tipo) == "jpg") $tipo="jpeg";
eval ("\$im = ImageCreateFrom$tipo('$fileOrigine');");
ImageCopyResized($vi, $im, 0, 0, 0, 0, $larghezza, $altezza, $l, $a);
if ($tipo="jpeg") $eval_expression= "Image$tipo(\$vi, '$fileDestinazione', 100);";
else $eval_expression="Image$tipo(\$vi, '$fileDestinazione');";
eval ($eval_expression);
ImageDestroy($vi);
if ($tipo=="stabile"){
echo "file destinazione: ".($fileDestinazione);
$cc = new canvasCrop();
$cc->loadImage($fileDestinazione);
$cc->cropToDimensions(0, 0, WIDTH_STABILE, HEIGHT_STABILE);
$cc->saveImage($fileDestinazione);
$cc->flushImages();
}
return "Thumb_".$filename;
}//function buildThumbs ?> |
But on my PC with Easy PHP 1.6.0.0 this works great... on my providers Server colours appear really poor.
Here the example:
I tried to set the quality etc etc... but still can't get over it!!
I also tried to save in PNG format but the colours are still the same!! 
Please help me if you can! |
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amnuts
Site Admin
Joined: 01 Sep 2002
Posts: 662
Location: East Sussex, England
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| Posted: Tue Jul 27, 2004 5:13 pm Post subject: |
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Hi there, and welcome to the board!
What version of GD runs on the server? If it's anything less than 2.0.1 then there's a good chance that you may get some funky colourings (I know I did when trying on an older version of GD).
Looking at your code I notice you use 'ImageCopyResized'. This might suggest you do in fact use GD 1.x. If you know you use GD 2.x then change that to 'ImageCopyResampled'... Better yet, go and grab the class.dropshadow.php class from this site. It gives you a huge amount of resizing options - don't let the name of the class fool you - it's more a thumbnail creator than a dropshadow creator (it's a thumbnailer with the ability to wrap your image up with a drop shadow effect, but you have no need to HAVE to do that if you just want to resize!)
Try out the resampled first. If that doesn't work because you're using an older version of GD then might I suggest looking at this thread:
http://php.amnuts.com/forums/viewtopic.php?t=36
for decent resampling functions that will work with GD 1.x.
And if you want, check out that additional class - you may find a use for it! 
Regards,
Andy |
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tribal75
Newbie
Joined: 27 Jul 2004
Posts: 2
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| Posted: Wed Jul 28, 2004 3:01 am Post subject: |
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I got GD 2.01 ... as you suggested I used ImageCopyResampled and ImageCreateTrueColor and it worked great!
I soon watch after your dropshadow class.
Thanks for your kindness and support.
I hope to support you soon!
I know it's a little bit OT... is there any Commercial License or Agreement to use your classes? |
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amnuts
Site Admin
Joined: 01 Sep 2002
Posts: 662
Location: East Sussex, England
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| Posted: Wed Jul 28, 2004 3:58 am Post subject: |
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| tribal75 wrote: | | I got GD 2.01 ... as you suggested I used ImageCopyResampled and ImageCreateTrueColor and it worked great! |
Just the kind of thing I like to hear!
| tribal75 wrote: | | Is there any Commercial License or Agreement to use your classes? |
Good question. Everything on this site should be considered free for personal or non-profit use. I haven't specifically written anything down for commerical use, so I don't think it's fair to say that anyone HAS to pay, though it is more encoraged/expected that you donate something for commerical use. I plan to revamp the site soon to make this much clearer, and to spell out commerical use prices. However, I'm thinking something along the lines of up to a $25 donation for commerical use, depending on the script. It's my hope, though, to always keep the scripts on php.amnuts.com free for personal and non-commerical use. (However, I may put full-blown applications on amnuts.com as commerical release only, and not free.)
As for licensing... Some are specifically GPL, and so you would follow the guidlines for that license scheme. All code is copyright me, unless otherwise stated. Don't claim the classes as your own and give credit where it's due... Ermm.... That's all I can think of right now.
Hope that helps answer your questions. If not, just let me know!
Andy |
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