Ada, DECWindows, GKS - Do I have a chance?

Ada, DECWindows, GKS - Do I have a chance?

[David Gawron]

Dear Ada Folks,

	Here is my situation:

		- I'm writing some software in DEC Ada on a VAXstation 3100,
		- The Software uses DECWindows,
		- The software requires GKS-like graphics capabilities
		  (such as coordinate transformation, clipping, ellipses...)

	Are there any Ada packages out there that provide GKS-like
	capabilities under DECWindows?

	I am willing to consider freeware, public domain, and commercial
	products.  I would also consider homebrew Ada packages that have
	a set of basic coordinate transformations and primitive shape
	drawing capabilities.

					Thanks,

					Dave Gawron
					dgg@aplcomm.jhuapl.edu

Re: Ada, DECWindows, GKS - Do I have a chance?

[Brian Hanafee]

In article <141@aplcomm.JHUAPL.EDU> dgg@aplcomm.jhuapl.edu (David Gawron) writes:
>
[stuff deleted]
>		- The software requires GKS-like graphics capabilities
>		  (such as coordinate transformation, clipping, ellipses...)
>
>	Are there any Ada packages out there that provide GKS-like
>	capabilities under DECWindows?
>
>	I am willing to consider freeware, public domain, and commercial
[more stuff deleted]


You might check out the GKS program in the simtel20 Ada repository.
I haven't used it, but the following is an abstract of the prolog.
The ftp site is wsmr-simtel20.army.mil, and to software is in
the directory PD2:<ADA.GKS>.


-------- SIMTEL20 Ada Software Repository Prologue ------------
[stuff deleted]
--
-- Abstract     : The Graphic Kernel System (GKS) is a device
- independent software package which implements
- the draft GKS binding to ANSI Ada for GKS 
- levels Ma, Oa, 1a, 2a, Mb, Ob, 1b, Mc, and 1c.
- GKS/Ada will support selective visibility, 
- independent VDI and VDM interfaces, the       
- configuration of multiple graphic device         
- drivers, and independent packaging of the 
- various GKS levels.  
- The complete GKS will include a prototype 
- metafile generator/driver, and a metafile 
- interprete.  Device-dependent software must
- be included to drive the Lexidata color rastor
- device and the Summagraphics graphics tablet.
- Ada software to support contour processing 
- requirements, including grid generation, 
- mathematical interpolation and contour map 
- generation needs to be developed.  Also, 
- the GKS and provides for the delivery of
- WIS-compatible equipment capable of high quality
- 35mm color slides directly from graphics displays.
-
- This tool was developed as a precursor for 
- the WMCCS Information System (WIS).  An
- executable version of the tool has been 
- demonstrated.  This source code has sub-
- sequently been recompiled but has not under-
- gone extensive testing.
[more stuff deleted]



Brian Hanafee
Advanced Decision Systems