[SOLVED] PNG Transparency on GD

[sammysmee]

Hello there

Me and my coder have been trying to fix this for at least 6 hours and our heads are ready to explode! we really need your help!

basically, we are making 'custom' avatars for our RPG game, we have managed to make a code to layer PNGS using GD however we cannot manage 24-bit PNG transparency! We got as far as managing to get the 'bottom' layer Transparent, but thats as far as we can get.

We've tried hundreds of codes and scrawled the net, with no avail!

 

here is the code:

 

<?php

  header ("Content-type: image/png");

//$imgbackground=imageCreateFromPng("paperdoll/background.png");

  $imgTorso=imageCreateFromPng("paperdoll/human_body.png");

  $imgHair=imageCreateFromPng("paperdoll/malehair1_2.png");

  $imgEyes=imageCreateFromPng("paperdoll/eyes1.png");

  $imgEars=imageCreateFromPng("paperdoll/human_ears.png");

  $imgMouth=imageCreateFromPng("paperdoll/mouth1.png");

  $imgBody=imageCreateFromPng("paperdoll/scivvies.png");

 

 

 

 

  imagecolortransparent($imgTorso,imagecolorat($imgTorso,0,0));

  imagecolortransparent($imgHair,imagecolorat($imgHair,0,0));

  imagecolortransparent($imgEyes,imagecolorat($imgEyes,0,0));

  imagecolortransparent($imgEars,imagecolorat($imgEars,0,0));

  imagecolortransparent($imgMouth,imagecolorat($imgMouth,0,0));

  imagecolortransparent($imgBody,imagecolorat($imgBody,0,0));

 

 

    // imageAlphaBlending($imgbackground, true);

imageAlphaBlending($imgTorso, true);

imageAlphaBlending($imgHair, true);

imageAlphaBlending($imgEyes, true);

imageAlphaBlending($imgEars, true);

imageAlphaBlending($imgMouth, true);

imageAlphaBlending($imgBody, true);

 

//imageSaveAlpha($imgbackground, true);

    imageSaveAlpha($imgTorso, true);

    imageSaveAlpha($imgHair, true);

imageSaveAlpha($imgEyes, true);

imageSaveAlpha($imgEars, true);

imageSaveAlpha($imgMouth, true);

imageSaveAlpha($imgBody, true);

 

//imagecolortransparent($imgbackground,imagecolorat($imgbackground,0,0));

  $insert6_x = imagesx($imgTorso); $insert6_y = imagesy($imgTorso);

  $insert_x = imagesx($imgHair); $insert_y = imagesy($imgHair);

  $insert2_x = imagesx($imgEyes); $insert2_y = imagesy($imgEyes);

  $insert3_x = imagesx($imgEars); $insert3_y = imagesy($imgEars);

  $insert4_x = imagesx($imgMouth); $insert4_y = imagesy($imgEars);

  $insert5_x = imagesx($imgBody); $insert5_y = imagesy($imgEars);

  imagecopymerge($imgTorso,$imgTorso,0,0,0,0,$insert6_x,$insert6_y,100);

  imagecopymerge($imgTorso,$imgHair,0,0,0,0,$insert_x,$insert_y,100);

  imagecopymerge($imgTorso,$imgEyes,0,0,0,0,$insert2_x,$insert2_y,100);

  imagecopymerge($imgTorso,$imgEars,0,0,0,0,$insert3_x,$insert3_y,100);

  imagecopymerge($imgTorso,$imgMouth,0,0,0,0,$insert4_x,$insert4_y,100);

  imagecopymerge($imgTorso,$imgBody,0,0,0,0,$insert5_x,$insert5_y,100);

  //imagecopymerge($imgbackground,$imgbackground,0,0,0,0,$insert6_x,$insert6_y,100);

  imagepng($imgTorso,"",100);

?>

 

 

and the result:

 

http://sammystudio.co.uk/majv1/avatar3.php

 

 

- somebody help! hehe!

 

thanks for reading!!!

 

[Barand]

The transparent color is an image property - ie one per image.

 

You can define transparent colors with imagecolorallocatealpha()

[sammysmee]

that may be true but i wouldnt know where to put it/what to change ^^ (im a noob!)

[sammysmee]

if you could show me what i'm meant to do by tweaking my code, that'd be very helpful! ^^

[Barand]

what's wrong with the result at http://sammystudio.co.uk/majv1/avatar3.php ?

[sammysmee]

the pngs are jagged the only way around this is to resize the file which comes out blurry ><

[sammysmee]

Dont worry! We've cracked it

 

basically we resized the pngs (indexed ones) so they were 200 wide

then we added image resize and had it autoresize to 120 wide

 

this iliminates the 'sharp' edges!

[Barand]

Ah, good. I was looking at antialiasing but that doesn't have alpha support or work with transparent colors.