Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!lll-winken!uunet!yale!sanders%yale-zoo-suned
From: sanders%yale-zoo-suned@CS.YALE.EDU (Malcolm Sanders)
Newsgroups: comp.lang.postscript
Subject: Imagemask in NeWs/PostScript:
Message-ID: <53904@yale-celray.yale.UUCP>
Date: 17 Mar 89 01:46:23 GMT
Sender: root@yale.UUCP
Reply-To: sanders%yale-zoo-suned@CS.YALE.EDU (Malcolm Sanders)
Organization: Yale University Computer Science Dept, New Haven CT  06520-2158
Lines: 55


			  * HELP *

    All you Postscript/NeWS experts out there-- I need to know
    what's going on with imagemask.  When I execute the following
    fragment of Postscript code in the NeWS psh environment......

	   100 100 translate
	   400 400 scale
	   0 1 0 rgbcolor setcolor    %green

	   900 900          % width and height of bitmap
	   true             % color if bit is set to 1
	   [900 0 0 900 0 ] % starts in lower left hand corner
	   {<
	      (202500 hex characters arranged in rows of 72
	       characters each except the final row has 36)
	   >}
	    imagemask

 ....... the image, that should look(generically) like
     this_
	  |
	  |
	 \|/
	  '
    #   ### ###   #                            #   ### ###   #
    #   ### ###   #                              ### ###   # #
    #   ### ###   #    turns into              # ###   ##   ##
    #   ### ###   #    something like-->       ##   ##   ### #
    #   ### ###   #                             ##   ### ###
    #   ### ###   #                            #   ### ###   #


      Is there something obvious that I am overlooking?  I'm fairly
      certain the bitmap itself is correct in the sense of scanning
      left to right and up by rows from the lower left hand corner
      of the image.

      Thanks,

		  -Malcolm.
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