imagefilledellipse() renders as a square on my server, not on my XAMPP

[inzania]

This is really strange and throwing me for a loop.  I suspect there's a config setting somewhere in my PHP setup on my server which I am missing...

 

I have a PHP script that renders a vector drawing (as a series of lines/points) into a png image.

When I'm testing the script on my local machine (XAMPP + OSX) everything works great.  When the script runs on my host (hostgator) the imagefilledellipse() function renders as a square instead of a circle.  Screenshots below.  Try the server version for yourself at http://sundrynotes.com/alpha/ (press "create new note" in the lower right then long-press on the note and select the "whiteboard" option, draw, then press "accept").

 

[attachment deleted by admin]

[BlueSkyIS]

compare your GD versions. you can get them using phpinfo();

 

<?php
phpinfo();
?>

[inzania]

Both XAMPP and hostgator are showing "GD Version bundled (2.0.34 compatible)"

The libpng and freetype versions differ, but I assume that those don't sound relevant...

[BlueSkyIS]

well, at least that helps rule out that issue.

 

it looks like there is an issue with anti-aliasing on the hostgator server. in other words, pixels that should be semi-transparent are rendered as completely solid, causing the "jaggies". i guess I would hack around with anti-aliasing settings, file types (use png or gif), and transparent color settings. sorry I can't be more definite about the problem or solution. maybe someone else has more insight.

[inzania]

Thanks for the help   I'm contacting the hostgator support, hopefully they can identify the problem...

[BlueSkyIS]

hate to rain on your parade, but they will most likely blame the code.

[inzania]

Haha yeah - they of course will blame the code.  I did figure it out though.  For whatever reason, I needed to reset the thickness of the line (in the server version only  )

 

So before I call imagefilledellipse(), I call imagesetthickness($img, 1)

 

It seems the thickness of the line was acting as a 'stroke' around the circle.  It makes sense, just seems strange to me that this would behave differently on the same GD version =\

[BlueSkyIS]

strange, but whatever. it would have taken longer for me to figure that out.