Yes, ArcSciMed who later renamed themselves "Animation Science". One of my former employers was going to buy the ArcSciMed simulation library until I told them it was the same library used by Softimage|Particle, which we were already using. They didn't like the looks of Softimage|Particle (for the purposes of generating weather system data), so they rolled their own.
As for other nice widgets, you could click on any text edit box or button in the UI and drag the mouse left or right to increment/decrement the value. The rate of increase/decrease would vary depending on which mouse button you used. The workflow was equivalent to the current workflow of clicking the parameter name in a PPG to mark it then activate the virtual slider to change value, but the Softimage|Particle workflow was more slick. When I first saw 'Sumatra' and how the PPGs, parameter marking, and other things worked, I immediately thought of Softimage|Particle as the inspiration. Matt -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Luc-Eric Rousseau Sent: Friday, October 18, 2013 1:18 PM To: [email protected] Subject: Re: Friday Flashback #142 I never really used it beyond doing a tutorial, but I loved the interface, the widgets and the opengl look. It had manipulators which softimage 3D also did not have. So much more modern than softimage|3D; hard to believe it's from 1995, and you would only get a new softimage GUI 5 years later. I think it was written internally, with some particle code from a company called ArSciMed.

