3 ms·

Recursive Drawing

124 points by andrewla 3y ago

dang 3y ago
Related. Others? Recursive Drawing - https://news.ycombinator.com/item?id=28005194 https://news.ycombinator.com/item?id=28005194 - July 2021 (1 comment) Recursive Drawing - https://news.ycombinator.com/item?id=19680149 https://news.ycombinator.com/item?id=19680149 - April 2019 (36 comments) Recursive drawing - https://news.ycombinator.com/item?id=16728049 https://news.ycombinator.com/item?id=16728049 - April 2018 (17 comments) Recursive Drawing - https://news.ycombinator.com/item?id=3951255 https://news.ycombinator.com/item?id=3951255 - May 2012 (83 comments)
- vosper 3y ago
  I’m oh-so disappointed that the top comment in these previous discussions isn’t a link to their previous discussions…
Eduard 3y ago
is there a way to emulate drag-and-drop on a (touch-based) Chrome Android?
ganzuul 3y ago
It seems obvious now that hyperbolic space is recursive like this. Much appreciated.
joshu 3y ago
Toby's current startup: https://cuttle.xyz/ https://cuttle.xyz/ (I'm an investor)
practal 3y ago
Interesting. This work was done at ITP (which is short for interactive theorem proving, but not here). The ITP has been founded by Red Burns, who has written a foreword (really a foreword interview) for John Maeda's "Creative Code". And I am currently looking at Maeda's work, after recently discovering his book "Design By Numbers", which is just fabulous (and looks great on a coffee table, although I don't have one). And as it happens, I plan to implement a version of Design By Numbers in Abstraction Logic. And in order to make it easy for users to write down Abstraction Logic terms, I have invented a new simple text format called Recursive Text [0]! Which closes the circle to RecursiveDrawing.com. [0] More info about Recursive Text (RX) will be available next month at http://recursivetext.com http://recursivetext.com . Its semantics is really simple: RX = Block+ Block = Line (Line | Block)* Line = Character* RX is saved as a text file, encoding above semantics via indentation. It can be edited as a normal text file, but is intended to be edited in a special editor that respects and exploits above semantics.
discarded1023 3y ago
I wonder how this relates to the old combinator-based approaches of Peter Henderson [1] and the logic-programming version [2]. Guy Cousineau also had a go with "Functional programming and geometry" in the late 1990s. I guess we'd say these are capable of describing corecursive pictures now. I always felt this stuff would make a better foundation for web layouts than CSS. [1] https://dl.acm.org/doi/pdf/10.1145/800068.802148 https://dl.acm.org/doi/pdf/10.1145/800068.802148 [2] Logic programming, graphics and infinite terms P. R. Eggert, K. P. Chow Department of Computer Science University of California, Santa Barbara UCSB DoCS TR 83-02 June 1983.
davebranton 3y ago
My (much simpler, decades old) one https://plasticeagle.com/fractal.html https://plasticeagle.com/fractal.html I'm sure many people have written similar things, in various technologies, over the years. Let's see them.
- evnp 3y ago
  I'll admit the UX there took me a while to figure out, once you move one point in the mini-map everything makes sense. Incredibly fun to play with. It has rough edges, and showing its age (at least a decade), but here's my contribution: https://evnp.github.io/3cursion/ https://evnp.github.io/3cursion/
- smusamashah 3y ago
  This is very good, it keeps iterating adding more detail every run.
arh5451 3y ago
cool
thomastjeffery 3y ago
Is it a right or left fold? If left, then tail call optimization would really help performance.

124 points by andrewla 3y ago

dang 3y ago

Related. Others? Recursive Drawing - https://news.ycombinator.com/item?id=28005194 https://news.ycombinator.com/item?id=28005194 - July 2021 (1 comment) Recursive Drawing - https://news.ycombinator.com/item?id=19680149 https://news.ycombinator.com/item?id=19680149 - April 2019 (36 comments) Recursive drawing - https://news.ycombinator.com/item?id=16728049 https://news.ycombinator.com/item?id=16728049 - April 2018 (17 comments) Recursive Drawing - https://news.ycombinator.com/item?id=3951255 https://news.ycombinator.com/item?id=3951255 - May 2012 (83 comments)

vosper 3y ago
I’m oh-so disappointed that the top comment in these previous discussions isn’t a link to their previous discussions…

Eduard 3y ago

is there a way to emulate drag-and-drop on a (touch-based) Chrome Android?

ganzuul 3y ago

It seems obvious now that hyperbolic space is recursive like this. Much appreciated.

joshu 3y ago

Toby's current startup: https://cuttle.xyz/ https://cuttle.xyz/ (I'm an investor)

practal 3y ago

Interesting. This work was done at ITP (which is short for interactive theorem proving, but not here). The ITP has been founded by Red Burns, who has written a foreword (really a foreword interview) for John Maeda's "Creative Code". And I am currently looking at Maeda's work, after recently discovering his book "Design By Numbers", which is just fabulous (and looks great on a coffee table, although I don't have one). And as it happens, I plan to implement a version of Design By Numbers in Abstraction Logic. And in order to make it easy for users to write down Abstraction Logic terms, I have invented a new simple text format called Recursive Text [0]! Which closes the circle to RecursiveDrawing.com. [0] More info about Recursive Text (RX) will be available next month at http://recursivetext.com http://recursivetext.com . Its semantics is really simple: RX = Block+ Block = Line (Line | Block)* Line = Character* RX is saved as a text file, encoding above semantics via indentation. It can be edited as a normal text file, but is intended to be edited in a special editor that respects and exploits above semantics.

discarded1023 3y ago

I wonder how this relates to the old combinator-based approaches of Peter Henderson [1] and the logic-programming version [2]. Guy Cousineau also had a go with "Functional programming and geometry" in the late 1990s. I guess we'd say these are capable of describing corecursive pictures now. I always felt this stuff would make a better foundation for web layouts than CSS. [1] https://dl.acm.org/doi/pdf/10.1145/800068.802148 https://dl.acm.org/doi/pdf/10.1145/800068.802148 [2] Logic programming, graphics and infinite terms P. R. Eggert, K. P. Chow Department of Computer Science University of California, Santa Barbara UCSB DoCS TR 83-02 June 1983.

davebranton 3y ago

My (much simpler, decades old) one https://plasticeagle.com/fractal.html https://plasticeagle.com/fractal.html I'm sure many people have written similar things, in various technologies, over the years. Let's see them.

evnp 3y ago
I'll admit the UX there took me a while to figure out, once you move one point in the mini-map everything makes sense. Incredibly fun to play with. It has rough edges, and showing its age (at least a decade), but here's my contribution: https://evnp.github.io/3cursion/ https://evnp.github.io/3cursion/
smusamashah 3y ago
This is very good, it keeps iterating adding more detail every run.

arh5451 3y ago

cool

thomastjeffery 3y ago

Is it a right or left fold? If left, then tail call optimization would really help performance.