A GD question

Sore

I would like to make an dynamic map with php and the GD library.
On the map there should be halftransparent circles. They should gett their size from a database.
I have found out how to do this with squares, through building images with imagecreate and putting them into the map with imagecopymerge. But is there a way of doing this with circles?

Thanks in advance

waygood

Have you actually got transparency to work?
If so then can you let us in on it. I've had a heck of a time trying and dropped it in the end.

Circles can be done using the following
int imagearc ( resource image, int cx, int cy, int w, int h, int s, int e, int col)

cx - center x co-ordinate
cy - center y co-ordinate
w - width of circle
h - height of circle (same values gives circle - different gives oval)
s - angle in degrees to start from (0 - 3 o'clock position)
e - angle in degree to end at (360 - full circle back to start)
col - colour to draw circle in.

full description in the manual comments http://www.php.net/manual/en/function.imagearc.php

Sore

Thanks for the reply.
Well maby I didnt describe it good enough.
I start by loading a map (a jpeg) with

$im = imagecreatefromjpeg ($mapFile);

i then put images into it with

$circle = imagecreate ($x, $y);
imagecopymerge($im, $circle, $xcord, $ycord, 0, 0, $x, $y, 80);

($x and $y is taken from the statistics in the D😎

I then get 80% untransparent squares in the image. And I give them the color $transpcol.

Now, I thought maby I could put circles into the $circle images with
imagefilledellipse ($circle, 50, 50, $x,$y, $black);

And remove the $transpcol with.
imagecolortransparent($circle , $transpcol);

And only the circles should be seen. But it doesnt work.