Java Mapscript - converting edu.umn.gis.mapscript.imageObj into a java.awt.image

[Benedikt Rothe]

(This is a correction of a awkward omission :-)

The result of the getBytes-method of the imageObj is *compatible to the 
function*
javax.imageio.ImageIO.read. 

UMN MapServer Users List <MAPSERVER-USERS at LISTS.UMN.EDU> schrieb am 
10.04.2006 15:06:49:

> 
> Hi James 
> 
> I think the following post contains the answer: 
> http://article.gmane.org/gmane.comp.gis.mapserver.user/17904/ 
> 
> The result of the getBytes-method of the imageObj is 
> javax.imageio.ImageIO.read. 
> 
> Benedikt 
> 
> UMN MapServer Users List <MAPSERVER-USERS at LISTS.UMN.EDU> schrieb am 
10.04.2006 13:45:04:
> 
> > Hi,
> > 
> > I am working with java/mapscript and am trying to convert an 
> > edu.umn.gis.mapscript.imageObj into some kind of java image object 
(ideally 
> > something that implements java.awt.image.RenderedImage ? but anything 
would 
> > be a start).  This is so I can manipulate the image, using JAI and 
java2d, 
> > and then stream the modified image as a SOAP message response.
> > 
> > At the moment I am saving the image to a temporary file (java code 
shown 
> > below), using the imageObj.save() method, and then reloading that 
image into 
> > my java object.  This is not a desirable solution for obvious 
performance 
> > and scalability reasons ? especially as I seem to need to pause after 
the 
> > save to avoid the load command giving intermittent errors.
> > 
> > Does anybody have any experience of converting the imageObj into a 
more 
> > useful java object?  Has anyone written a java or c method to aid 
this, or 
> > found another way round a similar problem?
> > 
> > Regards,
> > James
> > 
> > ---Java code snippet---
> > 
> > imageObj image = mapobj.draw();  //define imageObj
> > 
> > String filename = "/var/www/html/gis/scratch/maptemp.png";
> > File filefilename = new File(filename);  // set temp file variables
> > 
> > image.save(filename, mapobj);  // save image to disk
> > 
> > Thread.sleep(1000); // pause to ensure has saved - avoids errors
> > 
> > BufferedImage bufimg = ImageIO.read(filefilename);  // load it again
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