[ka-Map-users] Ka-map and AGG + Alpha? - Solved (need confirm)

[riteshambastha]

Hey Sahca, 
thanks for sharing such helpful information. 
Still I am facing some problems. Kindly check this part of the code and see
: 

   elseif (strtoupper($_REQUEST['i']) == 'AGGA') {    /// <-- also use
AlphaCh if AGGA
        $useAlphaCh = true;
  }

I think "AlphaCh if AGGA" must be commented. 

<snip>
/////// in tile.php (around line 85): /////////////////

$useAlphaCh = false;
if (isset($_REQUEST['i'])) {
   setOutputFormat( $_REQUEST['i'] );
   if (strtoupper($_REQUEST['i']) == 'ALPHA') {
    $useAlphaCh = true;
   }
   elseif (strtoupper($_REQUEST['i']) == 'AGGA') {    /// <-- also use
AlphaCh if AGGA
        $useAlphaCh = true;
  }
} 
</snip>

Let me know if am not in the right direction.
Thanks,
Ritesh

Sacha Black wrote:
> 
> Hans, Zak, Paul, Lorenzo,
> 
> Thanks for your comments - think I finally got the AGG + Alpha (AGGA)
> option to work. Hans maybe you can test the below and confirm?
> 
> I hope it works for you....
> 
> Sacha
> 
> +++++++++
> 
> [After Zak's last comment I realized that Paul's suggested code was
> not being executed in tile.php, because the condition "if
> ($useAlphaCh)" was never true, after that was fixed, everything
> worked]
> 
> here is the full set of what worked for me (the bottom 2 changes were
> the final key):
> 
> ///////////////// in the .map file: /////////////////
> 
> OUTPUTFORMAT
>  NAME 'AGGA'
>  DRIVER AGG/PNG
>  IMAGEMODE RGBA
> # FORMATOPTION "TRANSPARENT=ON"
> END
> 
> and also for the relevant LAYER:
> 
> LAYER
>   METADATA
>      "IMAGEFORMAT" "AGGA"
>   END
> ....
> END
> 
> /////// in config php (around line 105): /////////////////
> 
>  $aszGMap = array (
>          'title' => 'GMap 75',
>          'path' => '../../gmap/htdocs/gmap_AGGA.map',
>          'scales' => array( 40000000, 25000000, 12000000, 7500000,
> 3000000, 1000000 ),
>          'format' =>'PNG'  /// <!-- doesn't seem to have an effect -->
>  );
> 
> and (around line 210):
> 
>        case "AGGA":
>            $GLOBALS['szMapImageFormat'] = 'AGGA';
>            $GLOBALS['szMapImageCreateFunction'] = "imagecreatefrompng";
>            $GLOBALS['szImageExtension'] = '.png';
>            $GLOBALS['szImageCreateFunction'] = "imagecreatetruecolor";
>            $GLOBALS['szImageOutputFunction'] = "imagepng";
>            $GLOBALS['szImageHeader'] = 'image/png';
>            break;
> 
> 
> /////// in tile.php (around line 85): /////////////////
> 
> $useAlphaCh = false;
> if (isset($_REQUEST['i'])) {
>    setOutputFormat( $_REQUEST['i'] );
>    if (strtoupper($_REQUEST['i']) == 'ALPHA') {
>    	$useAlphaCh = true;
>    }
>    elseif (strtoupper($_REQUEST['i']) == 'AGGA') {    /// <-- also use
> AlphaCh if AGGA
> 	$useAlphaCh = true;
>   }
> }
> 
> and lastly the fix from Paul (around line 315):
> 
> if ($useAlphaCh) {
>      imageAlphaBlending($oTile, false);
>      imagefill($oTile, 0, 0, imagecolorallocatealpha($oTile, 0, 0, 0,
> 127));
>      imageSaveAlpha($oTile, true);  	
> }
> _______________________________________________
> ka-Map-users mailing list
> ka-Map-users at lists.maptools.org
> http://lists.maptools.org/mailman/listinfo/ka-map-users
> 
> 

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