Hi Sven,
You found a good one. It took me some time to figure out what is happening.
In fact this is due to MS4W 4.0.0 being compiled with Pixman support;
unfortunately I had hit this back in 2016 and removed Pixman for that
reason. Here we are again though :) I'll remove Pixman for the next
MS4W 4.0.1 release. Follow along the progress at
https://ms4w.com/trac/ticket/218
Thanks for reporting this.
-jeff
--
Thank you for using MS4W.
"MS4W: open doors as well as windows"
--
Jeff McKenna
MapServer Consulting and Training Services
https://gatewaygeomatics.com/
On 2019-05-22 4:53 AM, Sven Schroeter wrote:
Hi all,
I'm fighting with the SWIG PHP MapScript Opacity again and found a very
strange behavior.
Here is my test script:
include("../includes/phpmapscriptng-swig/mapscript_70400.php");
$map = new mapObj(MAPFILE_PATH.'test.map');
// set image format
$map->selectOutputFormat("image/jpeg");
$oRasterLayer = $map->getLayerByName('tk_rlp_tms_grau');
$oPolyLayer = $map->getLayerByName('grenzen_vg');
$oRasterLayer->setOpacity(10);
$oRasterLayer->status = MS_ON;
$oPolyLayer->setOpacity(30);
$oPolyLayer->status = MS_ON;
// set image size
$map->setsize(1000,768);
$map->setextent(300497,5495624,366043,5558489);
// Bild im MapServer IMAGEPATH abspeichern.
$image = $map->draw();
//Bildname, Extension und Pfad
$picname = md5(rand());
$picext = ".jpeg";
$picpathname = MS_TMP_PATH.$picname.$picext;
// Bild im MapServer IMAGEPATH abspeichern.
$mapimage = $image->save($picpathname,$map); //URL
$imgurl = MS_TMP_URL.$picname.$picext;
//header('Location: '.$imgurl);
echo '<img src="'.$imgurl.'" border="1">';
If I set the width of the image to a number with 2 zeros at the end
everything works fine.
e.g. $map->setsize(800,814);
or $map->setsize(1000,768);
as soon as I change the value for the width of the image it often
doesn't work anymore and the layers don't have transparency anymore.
e.g. $map->setsize(801,814);
or $map->setsize(1011,768);
It is extremely difficult to see a pattern here.
All variants work with the old Mapscript.
Is this a bug?
Thanks + Greeting
Sven
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