Omar Rizwan (@omar@social.omar.website)

https://www.complang.tuwien.ac.at/ulrich/PS/transforms.html interesting difference from HTML5 canvas (which otherwise has an almost identical API to PostScript) where you can set the matrix directly

Transformations

The PostScript interpreter keeps track of a matrix called the current transformation matrix. When constructing an image, the interpreter uses this matrix to convert the world coordinates used by the program into device coordinates used by the printer itself. Generally, the actual contents of the matrix are of little interest to a well-written PostScript program; the reason for this is that the specific contents are device-dependent. A program that uses them might not work properly. PostScript does provide a number of operators, however, that transform the matrix in a device-independent way. These operators allow you to transform the way user space maps onto device space, and they modify the current transformation matrix with a simple matrix transformation. The basic transformation operators are:
rotate
translate
scale
It is useful to realize that the current transformation matrix (and, hence the effect of all these operators) is part of the current graphics state and can be saved and restored using the gsave, and grestore operators. In addition, the transformations on the matrix affect path components constructed after the transformation. Even if a path is only partially constructed when a transformation is invoked, the parts of the path that were in place before the transformation will be unaffected.

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Omar Rizwan @omar

i don't think we're optimized for non-computer
interest yet but ppl still tend to be interested

like the system is much more high ceiling than low
floor despite how it looks / what people think

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Omar Rizwan @omar

there's a weird specific skill of looking at a bunch of papers and distilling them to 'this one proposes the actually useful technique in practice; all these others are later variations by other people that perform better on benchmarks but aren't really practical'

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Omar Rizwan @omar

mulling whether to test Nvidia support by trying to set up Google Cloud Compute Engine workstation vs. trying to dig up my Jetson Nano and plug it into a spare display

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Omar Rizwan @omar

they're both sort of weak, but the MS Bob approach actually seems slightly deeper than the Apple one / it takes the room/furniture/aesthetic at least a little bit seriously, instead of pasting a floating iOS on top https://olia.geocities.institute/@GIFmodel/111328018520066084

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Omar Rizwan @omar

I was looking at "Pure" https://en.wikipedia.org/wiki/Pure_(programming_language) out of curiosity or maybe a desire for an alternative to Tcl (small language, simple syntax, term rewriting, barewords, JIT, ...), then realized it's not in Homebrew (https://github.com/agraef/pure-lang/issues/34), and _then_ realized that it's basically completely dead and nonviable because it depends on LLVM features that were removed after LLVM 3.5 https://groups.google.com/g/pure-lang/c/nd__RPNI36I

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Omar Rizwan @omar

kind of surprises me that every scripting language doesn't have a sampling CPU profiler (that samples callstacks, lets you make a flamechart, etc) -- there are the built-in JS ones and py-spy and rbspy, but even those seem really recent to me

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Omar Rizwan @omar

thinking of 'transmission over QR code on your phone screen' as an alternative to both wires and wireless. clearer mental model (of what's connected to what) than wireless + no need for physical wires or plugging into a port on your phone

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Omar Rizwan @omar

I think making a live programming system that has to allow arbitrary systems programming sort of pushes you in this direction -- the most important thing is containing faults and not interrupting the entire system, instead of correctness, because you can fix correctness over time but if you hard crash then you're done https://social.omar.website/@omar/statuses/01HDE6DC7EJ7BG056PRV8V4PQK

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