Wednesday, April 26, 2017

Wanderers 2017.4.26


I've been shaking a cold since Earth Day, last Saturday. Peter, retired librarian, used to working with the public, says those cold viruses usually take about sixteen hours to incubate to the point of producing a notable physiological response, so the notion that I actually contracted the virus at the march, or later at the studio in Sellwood, would be pure science fiction on my part.

This morning's challenge was to ssh into the Raspberry Pi on the same network for file copying purposes. I was unsuccessful in entering a valid password, so had to venture to the basement in person to yank the memory stick, without ejecting properly. Yeah that sounds bad.  Psychoanalyze me why don't ya? So the point was to get anti-aliasing working better on these high frequency hexapents I'm doing for Glenn, a specimen above should be coming from Flickr.  How long did that last?

However the workflow, starting with Adrian's antiprism, through POV-Ray (the rendering software), ending in a PNG file, is supposed to go on to the making of transparencies. The shading or shadowing the ray tracer applies by default, is maybe command line turnoff-able. In lieu of that, I spent some thirty minutes dumping paint buckets (a tiny icon) of perfectly white paint (255, 255, 255), atop the bazillions of hexagons, a few pentagons.  Not that many actually. However I was at least forty minutes late to Glenn's talk, amidst other unrelated distractions such as forgetting where I'd put my boots.

Today I'm co-teaching in an elementary school and must remember to pack an HDMI cable, as that's our ticket to the projection screen, where MIT Scratch will be revealed to these second graders.  They're ready, having prepped with simpler games on the company Chromebooks. I wonder if we'll have enough mice this week. Tracking pad practice is important too of course.

Later, I'm on the Internet radio, closed circuit, with my highly qualified adults. That's a gig I've been hosting for awhile now.  The format is quite similar to what you'll find in my Youtube channel, with regard to Synergetics, say, except in this context it's all Python, from built-in to user types, callables (objects that "eat"), making your own, up through context managers, generators, the usual object oriented patterns, found in so many languages.

Last week I shared the news from Stanford, about Javascript replacing Java as an "intro to" programming language. Harvard's CS50 has been using MIT Scratch same as us, just for getting feet wet, before plunging into C and out the other shore (by week eight) in the lush jungle of Python, and other very high level languages. One appreciates the latter more having experienced the austere starkness of simply C.

Glenn has taken to coloring the hexapents to bring out patterns. I'm not going to recap all that here. He had a copy of Popko's book on the table, but didn't lug the Sloterdjik volumes I noticed.  He might as well have, but then pretty soon you're introducing a whole truckload of volumes, just for the one talk. Why should logistics be that hard, right?  The talk was well attended.  Barbara Stross, Milt Markowitz, Steve Mastin, Jon Bunce, Deke Bridges, Don Wardwell, Steve Crouch, Glenn and myself.