3/21/2024 0 Comments Deltagraph 7 windows![]() The Wall Street Journal for example used a mainframe to build their charts. So the killer feature would be Postscript output, in addition to screen, with a fully built Postscript driver. MacOS would allow you to add Postscript comments to a picture to add some better resolution but it wasn't the same. ![]() At the time only a few apps went all the way including Pagemaker, Illustrator and Freehand. While working on the Postscript code (which I had to learn with no tools other than a printer and reams of paper) I saw that I might be able to reverse engineer Illustrator's file format, which was conveniently text and all in Postscript. Other than Freehand I don't think anyone else had done this. When I started the UI code I asked two questions of Deltapoint (1) will this code ever be ported to Windows (2) do you want to support multiple documents open at a time. Windows was still too primitive to care about and multiple open documents was fairly uncommon. We started to build an engine to construct arbitrary charts, store complex attributes (almost everything in Deltagraph is adjustable), and manage an army of dialog boxes.Īs far as process went, we were doing what today would be called Lean. The project manager at Deltapoint and I talked every day, we sent releases continuously from Texas to California via Fedex. Each feature was put into the actual app and tested by them, giving feedback which we would then include. It was about as agile as you can get, sometimes things were simply removed and sometimes just revised repeatedly until we were all happy. Lots of features were actually in progress at the same time. We didn't even have a source code repository at the time. I think we got email finally in 1989 but I don't remember if we could even send a binary yet.
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