Also even if they are not like bow ties, quadrilaterals need not be flat. Ed _______________________
Ed Angel Founding Director, Art, Research, Technology and Science Laboratory (ARTS Lab) Professor Emeritus of Computer Science, University of New Mexico 1017 Sierra Pinon Santa Fe, NM 87501 505-984-0136 (home) an...@cs.unm.edu <mailto:an...@cs.unm.edu> 505-453-4944 (cell) http://www.cs.unm.edu/~angel <http://www.cs.unm.edu/~angel> > On May 13, 2020, at 9:16 PM, Steven A Smith <sasm...@swcp.com> wrote: > > some quads are not... think boomarang-like... I think there is a technical > term for that class of quad... also think if a "bowtie", also technically a > quad but potentially having "negative area". > > > > On 5/13/20 9:13 PM, thompnicks...@gmail.com <mailto:thompnicks...@gmail.com> > wrote: >> And quadralaterals aren’t convex? I don’t get it. >> >> Nicholas Thompson >> Emeritus Professor of Ethology and Psychology >> Clark University >> thompnicks...@gmail.com <mailto:thompnicks...@gmail.com> >> https://wordpress.clarku.edu/nthompson/ >> <https://wordpress.clarku.edu/nthompson/> >> >> >> From: Friam <friam-boun...@redfish.com> <mailto:friam-boun...@redfish.com> >> On Behalf Of Angel Edward >> Sent: Wednesday, May 13, 2020 7:40 PM >> To: The Friday Morning Applied Complexity Coffee Group <friam@redfish.com> >> <mailto:friam@redfish.com> >> Subject: Re: [FRIAM] PSC Tornado Visualization (2008) [720p] - YouTube >> >> Because triangles are convex they are guaranteed to be rendered correctly. >> Every modern graphics system whether hardware or software is based on using >> triangles as the basic element. >> __________ >> >> Ed Angel >> >> Founding Director, Art, Research, Technology and Science Laboratory (ARTS >> Lab) >> Professor Emeritus of Computer Science, University of New Mexico >> >> 1017 Sierra Pinon >> Santa Fe, NM 87501 >> 505-984-0136 (home) edward.an...@gmail.com >> <mailto:edward.an...@gmail.com> >> 505-453-4944 (cell) >> http://www.cs.unm.edu/~angel <http://www.cs.unm.edu/~angel> >> >> >> On May 13, 2020, at 7:28 PM, Frank Wimberly <wimber...@gmail.com >> <mailto:wimber...@gmail.com>> wrote: >> >> I'm not Marcus but in finite element analysis the discretization of a 2 >> dimensional region is always done with triangles. It's much more flexible >> than rectangular grids, to oversimplify. >> >> Frank >> >> --- >> Frank C. Wimberly >> 140 Calle Ojo Feliz, >> Santa Fe, NM 87505 >> >> 505 670-9918 >> Santa Fe, NM >> >> On Wed, May 13, 2020, 7:13 PM <thompnicks...@gmail.com >> <mailto:thompnicks...@gmail.com>> wrote: >> Marcus, >> >> Can you explain why the basic unit is a triangle? >> >> Any Peircean would LOVE it. >> >> n >> >> Nicholas Thompson >> Emeritus Professor of Ethology and Psychology >> Clark University >> thompnicks...@gmail.com <mailto:thompnicks...@gmail.com> >> https://wordpress.clarku.edu/nthompson/ >> <https://wordpress.clarku.edu/nthompson/> >> >> >> From: Friam <friam-boun...@redfish.com <mailto:friam-boun...@redfish.com>> >> On Behalf Of Marcus Daniels >> Sent: Wednesday, May 13, 2020 6:00 PM >> To: The Friday Morning Applied Complexity Coffee Group <friam@redfish.com >> <mailto:friam@redfish.com>> >> Subject: Re: [FRIAM] PSC Tornado Visualization (2008) [720p] - YouTube >> >> Check out that WaPost article for the state-of-the-art. (The new Unreal >> Engine.) >> >> From: Friam <friam-boun...@redfish.com <mailto:friam-boun...@redfish.com>> >> on behalf of Angel Edward <edward.an...@gmail.com >> <mailto:edward.an...@gmail.com>> >> Reply-To: The Friday Morning Applied Complexity Coffee Group >> <friam@redfish.com <mailto:friam@redfish.com>> >> Date: Wednesday, May 13, 2020 at 4:58 PM >> To: The Friday Morning Applied Complexity Coffee Group <friam@redfish.com >> <mailto:friam@redfish.com>> >> Subject: Re: [FRIAM] PSC Tornado Visualization (2008) [720p] - YouTube >> >> I vaguely remember plot 3d. No one renders today the way it did. Cray was >> less than a PC with a decent graphics card. >> >> Ed >> __________ >> >> Ed Angel >> >> Founding Director, Art, Research, Technology and Science Laboratory (ARTS >> Lab) >> Professor Emeritus of Computer Science, University of New Mexico >> >> 1017 Sierra Pinon >> Santa Fe, NM 87501 >> 505-984-0136 (home) edward.an...@gmail.com <mailto:edward.an...@gmail.com> >> 505-453-4944 (cell) http://www.cs.unm.edu/~angel >> <http://www.cs.unm.edu/~angel> >> >> >> On May 13, 2020, at 5:51 PM, Frank Wimberly <wimber...@gmail.com >> <mailto:wimber...@gmail.com>> wrote: >> >> Let me revise that a little bit. There was a visualization of the rider's >> view of a roller coaster ride that ran on a Cray supercomputer. The purpose >> was to demonstrate the capability and speed of a Lisp-based 3D renderer >> called Plot-3D or P3D or something similar. Do you know what I'm talking >> about, Ed? >> >> --- >> Frank C. Wimberly >> 140 Calle Ojo Feliz, >> Santa Fe, NM 87505 >> >> 505 670-9918 >> Santa Fe, NM >> >> On Wed, May 13, 2020, 5:31 PM <thompnicks...@gmail.com >> <mailto:thompnicks...@gmail.com>> wrote: >> Thanks, Frank. >> >> NIck >> >> Nicholas Thompson >> Emeritus Professor of Ethology and Psychology >> Clark University >> thompnicks...@gmail.com <mailto:thompnicks...@gmail.com> >> https://wordpress.clarku.edu/nthompson/ >> <https://wordpress.clarku.edu/nthompson/> >> >> >> From: Friam <friam-boun...@redfish.com <mailto:friam-boun...@redfish.com>> >> On Behalf Of Frank Wimberly >> Sent: Wednesday, May 13, 2020 3:35 PM >> To: The Friday Morning Applied Complexity Coffee Group <friam@redfish.com >> <mailto:friam@redfish.com>> >> Subject: Re: [FRIAM] PSC Tornado Visualization (2008) [720p] - YouTube >> >> You should take it seriously but I'm biased. I don't think PSC let's its >> supercomputers be used for eye candy. They didn't when I worked there and >> they were accountable to NSF. >> >> --- >> Frank C. Wimberly >> 140 Calle Ojo Feliz, >> Santa Fe, NM 87505 >> >> 505 670-9918 >> Santa Fe, NM >> >> On Wed, May 13, 2020, 3:26 PM <thompnicks...@gmail.com >> <mailto:thompnicks...@gmail.com>> wrote: >> Dear Phellow Phriammers, >> Is this eyecandy, or should I take it seriously? >> https://www.youtube.com/watch?v=0gQutQQiuAI&feature=youtu.be >> <https://www.youtube.com/watch?v=0gQutQQiuAI&feature=youtu.be> >> .-. .- -. -.. --- -- -..-. -.. --- - ... -..-. .- -. -.. -..-. -.. .- ... >> .... . ... >> FRIAM Applied Complexity Group listserv >> Zoom Fridays 9:30a-12p Mtn GMT-6 bit.ly/virtualfriam >> <http://bit.ly/virtualfriam> >> unsubscribe http://redfish.com/mailman/listinfo/friam_redfish.com >> <http://redfish.com/mailman/listinfo/friam_redfish.com> >> archives: http://friam.471366.n2.nabble.com/ >> <http://friam.471366.n2.nabble.com/> >> FRIAM-COMIC http://friam-comic.blogspot.com/ >> <http://friam-comic.blogspot.com/> >> .-. .- -. -.. --- -- -..-. -.. --- - ... -..-. .- -. -.. -..-. -.. .- ... >> .... . ... >> FRIAM Applied Complexity Group listserv >> Zoom Fridays 9:30a-12p Mtn GMT-6 bit.ly/virtualfriam >> <http://bit.ly/virtualfriam> >> unsubscribe http://redfish.com/mailman/listinfo/friam_redfish.com >> <http://redfish.com/mailman/listinfo/friam_redfish.com> >> archives: http://friam.471366.n2.nabble.com/ >> <http://friam.471366.n2.nabble.com/> >> FRIAM-COMIC http://friam-comic.blogspot.com/ >> <http://friam-comic.blogspot.com/> >> .-. .- -. -.. --- -- -..-. -.. --- - ... -..-. .- -. -.. -..-. -.. .- ... >> .... . ... >> FRIAM Applied Complexity Group listserv >> Zoom Fridays 9:30a-12p Mtn GMT-6 bit.ly/virtualfriam >> <http://bit.ly/virtualfriam> >> unsubscribe http://redfish.com/mailman/listinfo/friam_redfish.com >> <http://redfish.com/mailman/listinfo/friam_redfish.com> >> archives: http://friam.471366.n2.nabble.com/ >> <http://friam.471366.n2.nabble.com/> >> FRIAM-COMIC http://friam-comic.blogspot.com/ >> <http://friam-comic.blogspot.com/> >> >> .-. .- -. -.. --- -- -..-. -.. --- - ... -..-. .- -. -.. -..-. -.. .- ... >> .... . ... >> FRIAM Applied Complexity Group listserv >> Zoom Fridays 9:30a-12p Mtn GMT-6 bit.ly/virtualfriam >> <http://bit.ly/virtualfriam> >> unsubscribe http://redfish.com/mailman/listinfo/friam_redfish.com >> <http://redfish.com/mailman/listinfo/friam_redfish.com> >> archives: http://friam.471366.n2.nabble.com/ >> <http://friam.471366.n2.nabble.com/> >> FRIAM-COMIC http://friam-comic.blogspot.com/ >> <http://friam-comic.blogspot.com/> >> .-. .- -. -.. --- -- -..-. -.. --- - ... -..-. .- -. -.. -..-. -.. .- ... >> .... . ... >> FRIAM Applied Complexity Group listserv >> Zoom Fridays 9:30a-12p Mtn GMT-6 bit.ly/virtualfriam >> <http://bit.ly/virtualfriam> >> unsubscribe http://redfish.com/mailman/listinfo/friam_redfish.com >> <http://redfish.com/mailman/listinfo/friam_redfish.com> >> archives: http://friam.471366.n2.nabble.com/ >> <http://friam.471366.n2.nabble.com/> >> FRIAM-COMIC http://friam-comic.blogspot.com/ >> <http://friam-comic.blogspot.com/> >> >> >> >> .-. .- -. -.. --- -- -..-. -.. --- - ... -..-. .- -. -.. -..-. -.. .- ... >> .... . ... >> FRIAM Applied Complexity Group listserv >> Zoom Fridays 9:30a-12p Mtn GMT-6 bit.ly/virtualfriam >> <http://bit.ly/virtualfriam> >> unsubscribe http://redfish.com/mailman/listinfo/friam_redfish.com >> <http://redfish.com/mailman/listinfo/friam_redfish.com> >> archives: http://friam.471366.n2.nabble.com/ >> <http://friam.471366.n2.nabble.com/> >> FRIAM-COMIC http://friam-comic.blogspot.com/ >> <http://friam-comic.blogspot.com/> > .-. .- -. -.. --- -- -..-. -.. --- - ... -..-. .- -. -.. -..-. -.. .- ... > .... . ... > FRIAM Applied Complexity Group listserv > Zoom Fridays 9:30a-12p Mtn GMT-6 bit.ly/virtualfriam > <http://bit.ly/virtualfriam> > unsubscribe http://redfish.com/mailman/listinfo/friam_redfish.com > <http://redfish.com/mailman/listinfo/friam_redfish.com> > archives: http://friam.471366.n2.nabble.com/ > <http://friam.471366.n2.nabble.com/> > FRIAM-COMIC http://friam-comic.blogspot.com/ > <http://friam-comic.blogspot.com/>
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