TalkPHP - View Single Post - Pie chart w/ Anti-Aliasing

c-through · 12-07-2008, 06:58 PM

There is a way using the Google chart API and I found a nice tut on it to

Creating a three dimensional pie chart using Google's Chart API
But since we want to make the chart on our own here is what I would suggest to do something like that:

PHP Code:


			
header('Content-type: image/png');
$handle = imagecreate(200,200);
$background=imagecolorallocate($handle,000,000,000);
$red=imagecolorallocate($handle,255,0,0);
$green=imagecolorallocate($handle,0,255,0);
$blue=imagecolorallocate($handle,0,0,255);
imagefilledarc($handle,100,100,200,200,0,90,$green, IMG_ARC_PIE);
imagefilledarc($handle,100,100,200,200,90,240,$red, IMG_ARC_PIE);
imagefilledarc($handle,100,100,200,200,240,360,$blue, IMG_ARC_PIE);
imagepng($handle);

Just saw you are looking for an antialiasing solution...
Ok forget the script on top, one way would be supersampling, but creating a aa image from scratch

Don't have an good solution in my mind (Having a serious hangover, and need some sleep). But I do have a script from someone else creating antialiased arcs as far as I remember. Maybe you can use it?!

http://pastebin.com/m6fdecadf

And now I take some Panado and go sleep...

12-07-2008, 06:58 PM	#5 (permalink)
c-through The Wanderer Join Date: Nov 2008 Posts: 13 Thanks: 0	There is a way using the Google chart API and I found a nice tut on it to Creating a three dimensional pie chart using Google's Chart API But since we want to make the chart on our own here is what I would suggest to do something like that: PHP Code: `header('Content-type: image/png'); $handle = imagecreate(200,200); $background=imagecolorallocate($handle,000,000,000); $red=imagecolorallocate($handle,255,0,0); $green=imagecolorallocate($handle,0,255,0); $blue=imagecolorallocate($handle,0,0,255); imagefilledarc($handle,100,100,200,200,0,90,$green, IMG_ARC_PIE); imagefilledarc($handle,100,100,200,200,90,240,$red, IMG_ARC_PIE); imagefilledarc($handle,100,100,200,200,240,360,$blue, IMG_ARC_PIE); imagepng($handle);` Just saw you are looking for an antialiasing solution... Ok forget the script on top, one way would be supersampling, but creating a aa image from scratch Don't have an good solution in my mind (Having a serious hangover, and need some sleep). But I do have a script from someone else creating antialiased arcs as far as I remember. Maybe you can use it?! http://pastebin.com/m6fdecadf And now I take some Panado and go sleep... __________________ Hello World! Last edited by c-through : 12-07-2008 at 07:19 PM.