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[Benito]

Benito

PHP: Image Editing

I have looked into making images/editing images using PHP and found out about the GD libraries and I still cant find much help in the area I wanted it in.

I need to know how to display a row of same size images (like tiles) each named 1.png to 10.png, so I'd    imagine there was some way of opening an image and pasting it into a part of the created image at a certain x and y coordinate?

Any help would be much appreciated, thanks . 

[edit]

Would I have to use a loop and use these always:

Code: [Select]

<?php
$img = ImageCreate(480,48) or die ("Cannot Create image");
$count = 1;
while ($count <= 10)
{
$tile = imagecreatefrompng(&#39;images/&#39;.$count.&#39;.png&#39;);
imagesettile($img, $tile);
imagefilledrectangle($img, (($count-1)*48), 0, ((($count-1)*48)+48), 48, IMG_COLOR_TILED);
$count++;
}
header("Content-type: image/png");
ImagePng($img);
imageDestroy($img);
?>

I'm not even sure if you can do that.. but just an idea I cant try it right now as I'm going very soon.

I ♥ Open Girlfriend (What!? I didn't add this.. must have been Solly!)

• 

[PoeFacedKilla]

PoeFacedKilla

Re: PHP: Image Editing

http://us3.php.net/gd try that

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• 

[Dayjo]

Dayjo

Re: PHP: Image Editing

Try using the imagecopy() function to copy part of one image onto a new one.


This is semi-pseudo code.. i've not tested so it probably wont work, but hopefully you'll get the idea.

Code: [Select]

<?php
header("Content-type: image/png");

$img = imagecreate(480,48) or die ("Cannot Create image");
$count = 1;
while ($count < 10)
{
$tile = imagecreatefrompng(&#39;images/&#39;.$count.&#39;.png&#39;);
imagecopy($img,$tile,($count-1)*48,0,0,0,48,48);
$count++;
}

imagepng($img);
imagedestroy($img);
?>

www.dayjo.org

• 

[Benito]

Benito

Re: PHP: Image Editing

Try using the imagecopy() function to copy part of one image onto a new one.


This is semi-pseudo code.. i've not tested so it probably wont work, but hopefully you'll get the idea.

Code: [Select]

<?php
header("Content-type: image/png");

$img = imagecreate(480,48) or die ("Cannot Create image");
$count = 1;
while ($count < 10)
{
$tile = imagecreatefrompng(&#39;images/&#39;.$count.&#39;.png&#39;);
imagecopy($img,$tile,($count-1)*48,0,0,0,48,48);
$count++;
}

imagepng($img);
imagedestroy($img);
?>

Indeed seems to work, I've started to do slightly more complicated things now .

Got another question though, bits of my little images are transparent yet the BG is all black instead ???

How do I fix this?

I ♥ Open Girlfriend (What!? I didn't add this.. must have been Solly!)

• 

[Cassyblanca]

Cassyblanca

Re: PHP: Image Editing, NEW QUESTION

I'm not sure exactly what it was, but I started doing some GD Library stuff recently, and you have to set a transparent color, check the php.net documentation

There's such a double standard about religion in the modern world. Catholics can gather, wear white robes, and say "In nomine Patris, et Filii, et Spiritus Sancti" and be considered normal.

But if my friends and I gather, wear black robes, and say  "Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn", we're considered cultists.

• 

[Benito]

Benito

Re: PHP: Image Editing, NEW QUESTION

I'm not sure exactly what it was, but I started doing some GD Library stuff recently, and you have to set a transparent color, check the php.net documentation

Hmm thats annoying, it recognises when images overlap its just the very background.. even alpha transparencies work with images that overlap... just as said the areas where things are transparent and there are no images its black...

I ♥ Open Girlfriend (What!? I didn't add this.. must have been Solly!)

• 

[Cassyblanca]

Cassyblanca

Re: PHP: Image Editing, NEW QUESTION

Here's how I had done it:

Code: [Select]

<?php
header( &#39;Content-Type: image/png&#39; );

$TheImage = imagecreate( 240, 160 );
$Link = imagecreatefrompng( &#39;Link.png&#39; );

$BGColor = imagecolorallocate( $TheImage, 255, 0, 255 );

imagefill( $TheImage, 0, 0, $BGColor );

imagecopy( $TheImage, $Link, 32, 24, 0, 0, 32, 32 );

imagecolortransparent( $TheImage, $BGColor );

imagejpeg( $TheImage );

imagedestroy( $TheImage );
?>

made a proper transparent file for me o_O

http://us2.php.net/manual/en/ref.image.php
There are some alpha functions on there, see if you can figure it out from there, I cant do anything here at school ;/

There's such a double standard about religion in the modern world. Catholics can gather, wear white robes, and say "In nomine Patris, et Filii, et Spiritus Sancti" and be considered normal.

But if my friends and I gather, wear black robes, and say  "Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn", we're considered cultists.

• 

[Benito]

Benito

Re: PHP: Image Editing, NEW QUESTION

Ah filling the image with a background colour then setting that to transparent worked a treat thanks .

I ♥ Open Girlfriend (What!? I didn't add this.. must have been Solly!)

• 

[Venus]

Venus

Re: PHP: Image Editing, NEW QUESTION

Ah filling the image with a background colour then setting that to transparent worked a treat thanks .

You should also be able to change the GD library's color-depth to 32-bits. That way you can also load in a 32-bit PNG which uses the last 8 bits (alpha-channel) to specify transparency. Because if it is set to 24-bit (probably default, not sure), it will ignore that alpha channel (transparency), so that could be your problem.

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