Solved

Imagecreatetruecolor() Leaves Black Line

Posted on 2006-11-07
4
289 Views
Last Modified: 2006-11-18
Ive been using the GD function imagecreatetruecolor() to resize images on the server and it does the job, but not entirely satisfactorily.

First the output can be quite rough, but the really disturbing habit it has how it leaves a black line to the right and the bottom of resized images.

How do I get it to stop doing that?
0
Comment
Question by:ziche
  • 2
  • 2
4 Comments
 
LVL 49

Expert Comment

by:Roonaan
ID: 17888532
Make sure your resize script rounds up and does not round down when resizing images.

-r-
0
 

Author Comment

by:ziche
ID: 17888579
Im a bit rusty with my php skills, here is my size calculation code:

      if ($old_width > $old_height)
      {
            $new_width = $MAX_WIDTH;
            $new_height = ($old_height / $old_width) * $new_width;
      } else {
            $new_height = $MAX_HEIGHT;
            $new_width = ($old_width / $old_height) * $new_height;
      }

Where how do I include rounding up functionality?
0
 
LVL 49

Accepted Solution

by:
Roonaan earned 100 total points
ID: 17888583
try

     if ($old_width > $old_height)
     {
          $new_width = $MAX_WIDTH;
          $new_height = ceil(($old_height / $old_width) * $new_width);
     } else {
          $new_height = $MAX_HEIGHT;
          $new_width = ceil(($old_width / $old_height) * $new_height);
     }

-r-
0
 

Author Comment

by:ziche
ID: 17888665
Thanks Roonaan.

You are the one!
0

Featured Post

Three Reasons Why Backup is Strategic

Backup is strategic to your business because your data is strategic to your business. Without backup, your business will fail. This white paper explains why it is vital for you to design and immediately execute a backup strategy to protect 100 percent of your data.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Build an array called $myWeek which will hold the array elements Today, Yesterday and then builds up the rest of the week by the name of the day going back 1 week.   (CODE) (CODE) Then you just need to pass your date to the function. If i…
3 proven steps to speed up Magento powered sites. The article focus is on optimizing time to first byte (TTFB), full page caching and configuring server for optimal performance.
The viewer will learn how to dynamically set the form action using jQuery.
This tutorial will teach you the core code needed to finalize the addition of a watermark to your image. The viewer will use a small PHP class to learn and create a watermark.

770 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question