Re: [PHP] crop an image

Merlin schrieb:
Hi everybody,

I am still strugling with the crop problem.

It looks like it is not possible with PHP to do an imagecopyresampled
and and imagecopy on the same image.

Here is what I try to do:
1: Resize image to 80px width and correct ratio
2: Crop from that image a 80x60 part

Both work for themselfes, but not together.

Does anybody see the problem?

$outputImg = ImageCreateTrueColor($maxX, $dstY);
imagecopyresampled($outputImg, $inputImg, $posX, $posY,0,0, $picX, $picY, $srcX, $srcY);
$outputImg = ImageCreateTrueColor(80, 60);
imagecopy($outputImg, $inputImg, 0,0 , 0, 250, $picX, $picY);

If I leave the second imagecreate away, the image will be copied into the bigger size and is not 80x60.

Thank you for any help.

Merlin

David Christopher Zentgraf schrieb:
Copying half a pixel? I dare say that's where the problem is.

Chrs,
Dav

On 31 Oct 2007, at 19:34, Merlin wrote:

Hi there,

I do have a small problem with the proportions of image copy

The image is originally vertical in 100px width and 141px height.
Now I want to crop it to 80 px width and 60px height. There should be no black area and the proportions should be OK. That means that I have to copy only part of the image. In this case it would be 40.5px from above (141-60 / 2 ) and until 100.5 (40.5+60).
This would crop the middle part of the image.

Now with imagecoyresampled I can set the starting point of 40.5px, but not the ending point. The image will have a black bottom.

Here is the code I am using:
imagecopyresampled($outputImg, $inputImg, 0,0, 0 , 40.5, 80, 60, $srcX, $srcY);

Thank you for any hint. Maybe somebody has a good idea on how to crop that image.

Best regards,

Merlin

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got it, sorrry for the confusion. I mixed up the lables.
.

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