Problem with ImageRotate()

madd_maxx

I am using the ImageRotate() methode to rotate an image. Additional it runs well.

Only with -90 degrees the picture dimension is still the same as before. In this reason a part of the image is missing. If I rotate it with +90 degress all works fine.

Many thanks in advance
Andy

tekky

have you tried +270 then?

degrees of a circle work both ways.... -X = 360 - abs(X)....

madd_maxx

yes I tried it.

strange to say is that I only get this error if I rotate anti-clockwise (whatever I try 270 degrees or -90 degrees). It seem that the format is still landscape format while the portrait format is rotate 90 degrees anti-clockwise and have to be portrait format now.

against this the original picture rotate 90 degrees anti-clockwise. unfortunately it lost parts because the frame format is wrong.

tekky

ahah! I see the problem try something like this (from the php.net user submitted data)

<?php
Header("Content-type: image/jpeg");
$filename = "filename.jpg";
$img_size = getImageSize($filename);
$x = $img_size[0];
$y = $img_size[1];
 if ($x > $y)
{
  $newd = $x;
}
else
{
  $newd = $y;
}

$src_img = ImageCreateFromJPEG($filename);
$dst_img = ImageCreateTrueColor($newd,$newd);
$final_img = ImageCreateTrueColor($y,$x);

ImageCopyResampled($dst_img,$src_img,0,0,0,0,$x,$y,$x,$y);
$degrees = "90";
$rotated_img = ImageRotate($dst_img,$degrees,0);
ImageCopyResampled($final_img,$rotated_img,0,0,0,0,$y,$x,$y,$x);
ImageJPEG($final_img);
?>

madd_maxx

At first it runs good. the frame rotates. now I have the problem that the picture is too small. The picture is rotate correct but smaller as the original.

I only get the problem with the rotation as before. All the other rotations are very well.

Here you can see the output from my code:

http://www.dgf-dreamteam.de/picturepreview.php?id=12.jpg&gamma=1.000&MaxBreite=300&rotate=-0

If you want to see the error type another rotate value into the url. (do it in 90 degrees steps)

NOTE: I save the value of rotate in a session variable. Further I add the specified value to the existing rotate value.