PhantomJS generated the empty output PNG/PDF file

[rmaddu]

Hi,

We are using 2.2.1 version PhantomJS.exe. This is downloaded file, not the compiled file. We are trying to generate the png/pdf as the output file, but the file is empty. 

• We have HTML page. This is a template for generating map images.
• We have JS file -

         var page = require('webpage').create(),

                         system = require('system'),

                         fs = require('fs'),

                         debug = true;

• We have a data file -

{"projection":"EPSG:3857","extent":[-9943581.8637506254,5324921.5116860364,-9943296.2672634386,5325253.5708903763],"center":[-9943439.065507032,5325087.5412882064],"rotation":0.39389232430490972,"resolution":0.38123904057403107,"sources":[{"type":"WMS","layerOpts":{"visible":true,"zIndex":10},"sourceOpts":{"attributions":"","singleTile":true,"url":"http://XXXXXX/nwwms8/wms","params":{"LAYERS":["XXXX","XXXX","XXXXXXX","XXXXX","XXXXX","XXXXX","XXXXXX","XXXXXX"]}}}],"coordinateSystems":[{"code":"3857","bbox":[85.06,-180,-85.06,180],"proj4":"+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +wktext  +no_defs","name":"WGS 84 / Pseudo-Mercator"}],"scale":"700"}

• Below is the final process -

var startInfo = new ProcessStartInfo()

            {

                StandardOutputEncoding = Encoding.UTF8,

                WindowStyle = ProcessWindowStyle.Hidden,

                UseShellExecute = false,

                RedirectStandardOutput = true,

                FileName = PhantomJSExe,

                Arguments = string.Format(CultureInfo.InvariantCulture,

                "--web-security=false --ignore-ssl-errors=yes {0} {1} {2} {3} {4} {5} {6}",

                jsFile,

                mapTemplate,

                MapSize.Width,

                MapSize.Height,

                OutputFile,

                PixelRatio,

                dataFileName)

            };

Observations:

1. When we are passing some rotation value through the data file, we are getting requested width or height value exceeds the maximum value from service. PNG/PDF file is EMPTY since our WMS service supports only 4096 is maximum width or height.

2. When we are passing some rotation value is ZERO, png/pdf is generated properly. This case no maximum width or height issue.

Our questions -

Do we have any maximum width or height limitation related issues with PhantomJS? 

For some rotation values, png/pdf is generated properly. For some rotations not. How the width and height are calculated using rotation? How to trace the issue?

Regards,

Rajesh