4 replies to this topic

[bbqroast]

:(
The following code fetches a skin and crops it, however as the result is tiny I wish to re-size it. I have tried imagecopy, imagecopyresize but decided to use imagecopyresampled as it apparently makes the final look nicer :).

Sadly NONE of these functions work and instead give me a black 128X128 square! Any ideas?

<?php

	$image = imagecreatefrompng('http://s3.amazonaws.com/MinecraftSkins/bbqr0ast.png');

	$crop = imagecreatetruecolor(128,128);

	$userImage = imagecopyresampled($crop, $image, 0, 0, 0, 0, 128, 128, 8, 8);

	header('Content-type: image/png');

	imagepng($crop);

?>

Edited by bbqroast, 06 July 2011 - 11:31 PM.

[Revolt]

NVM This. Check Alexander's post below

[Alexander]

Remember to carefully review the synopsis of each function, they often vary between similar functions due to historic order.

http://php.net/manua...yresampled.php:

bool imagecopyresampled ( resource $dst_image , resource $src_image , int $dst_x , int $dst_y , int $src_x , int $src_y , int $dst_w , int $dst_h , int $src_w , int $src_h )

You seem to specify the source image height as eight and eight, even though likely your image is much larger than that. It will therefor resample it much lower than the original size regardless of destination point (128x128)

If you retrieve the image size with getimagesize on the orignal image, i.e.

list($width, $height) = getimagesize($url);

You will get the appropriate result:

[bbqroast]

The minecraft skins are tiny, http://s3.amazonaws....ns/bbqr0ast.png, that is 8 pixels of "head" area.
I only want to get the "head" area, ahhhh I think I am forgetting to feed the cords properly :(.

[bbqroast]

Ok, fixed:

<?php

	$image = imagecreatefrompng('http://s3.amazonaws.com/MinecraftSkins/bbqr0ast.png');

	$crop = imagecreatetruecolor(128 , 128);

	imagecopyresampled($crop, $image, 0, 0, 8, 8, 128, 128, 8, 8); 

	header('Content-type: image/png');

	imagepng($crop);

?>

Errors:
I was not specifying the y and x values for the head part of the original image (8,8).
On my second line I set the image to 8X8 pixels, this meant that when I pasted my head as 128X128 pixels only a portion of the top left corner came out (which was black as that's my hair!).