Sample programs in the Piet programming language (opens in new tab)

(dangermouse.net)

130 pointsjourneeman10y ago27 comments

27 comments

For those using Piet in production, what async web framework do you favor? Warhol seems pretty popular, but Schiele has me impressed with its expressiveness. We're currently using Dali, though I'm a bit dissatisfied at how surreal its API is.

skoczymroczny10y ago

I'm using Monet, because I want to make an impression on my clients.

1 more reply

jentulman10y ago

We just throw some Pollock on the box at random, but there's some more detailed Seurat dotted around the stack.

koliber10y ago

I'm not familiar with the others, but Dali is my choice for surreal-time operating system development.

iamcreasy10y ago

We are using Apache Van^Gogh. But it's trendy to use Hirst though.

michael-the110y ago

Love Van^Gogh in combination with a Munch cache. Recently went to the Van^Gogh conference where they had a great talk on this topic. [0]

[0] http://www.vangoghmuseum.nl/en/whats-on/exhibitions/past-exh...

1 more reply

kibwen10y ago

I suspect this is being downvoted because VG has a reputation for being notoriously unstable.

imrehg10y ago

We get popular results with Banksy, though come to think of it, not sure if anyone knows who our programmers are...

logicrook10y ago

I'm surprised async web framework as old as Warhol, Schiele or even Dali can keep up with the modernities and constant advances of JS and html5. Aren't they too old-fashioned?

And how can Dali be more surreal than using a language designed to animate monkeys on webpages for writing full-blown applications?

vog10y ago

I prefer the Hundertwasser framework, developed by 100water. Not sure how they achieved that, but this framework almost forces me to produce beautiful code.

dvirsky10y ago

You should definitely try Pollock. It's a bit rough, and the code is messy and hard to understand - but very powerful.

TheOtherHobbes10y ago

I've had good results from Emin. But it can be a bit temperamental.

szatkus10y ago

I was little terrified after reading the first sentence...

mihaifm10y ago

Do you have references for these? Google doesn't give me much.

iamcreasy10y ago

Salvador Dali is the full name. I'll let you decide how serious it is.

kibwen10y ago

Just having a little fun, friend. :)

leni53610y ago

An "actual" piet quine:

http://mamememo.blogspot.hu/2009/10/piet-quine.html

For me the image doesn't load, it's archived on stackexchange fortunately:

https://codegolf.stackexchange.com/questions/23193/output-an...

    $ ../npiet-1.1/npiet quine.gif > quine2.gif
    $ diff quine.gif quine2.gif

It's freakin' impressive.

greenpenguin10y ago

I had an interesting time writing a JIT for Piet some time ago. Piet is a pretty weird language in a few non-obvious ways. From what I remember:

* Execution moves between blocks of colour. Flood fill algorithms are a valid compiler optimisation!

* Execution can move left/right/up/down. You can't necessarily tell what will be executed without doing it. The 'codel chooser' stuff means you can exit a colour block in two different ways depending on program state (plus left/right/up/down, so 8 ways total...).

* Instructions are encoded in the difference between colour blocks.

* Piet is otherwise a fairly straightforward stack machine.

frobozz10y ago

I wouldn't trust these programs to work. The fibonacci one certainly doesn't.

When the explanatory line in the fibonacci example first hits the left hand side of the program, the Direction Pointer appears to be being rotated anti-clockwise.

Were it rotated clockwise, as-per the spec, it would go up, hit the black block above, and eventually end up in an infinite loop.

The command executed on entry to that block is PUSH (pale to normal yellow), so it shouldn't have any effect on DP.

S4M10y ago

I'm wondering if there is a practical use of such a graphic language. I am thinking of printing the pictures associated with the code, put them somewhere, and other people could take some photos of those pictures with their smartphones and run the corresponding code. That might be useful for a game but I can't think of anything yet.

ball_of_lint10y ago

Like a qr code but without needing internet. Could be cool for geocaching

dTal10y ago

QR codes don't need internet. They just get less reliable the bigger you make them, so often people just put URLS in them and put the real info at the URL. There are plenty of "historical site" QR codes around here that have a short paragraph of info in them.

AstroJetson10y ago

I was going to attempt a humorous comment of "I prefer a language that supports recursion, so I use Escher". But then my brain went, "think there already is an Escher". There is one, it's from 1995.

Are programming languages about to hit the same problem as musicians, thinking up that cool but unused band name?

Radle10y ago

The Pi calculator gave me the rest.

pygy_10y ago

http://www.dangermouse.net/esoteric/piet/piet_pi_big.png

> Richard Mitton supplies this amazing program which calculates an approximation of pi... literally by dividing a circular area by the radius twice. Richard says:

    The output is printed without the decimal
    point after the 3.

    Naturally, a more accurate value can be
    obtained by using a bigger program.

qznc10y ago

Any museum wants to host an exhibition?

j / k navigate · click thread line to collapse

27 comments

kibwen10y ago

skoczymroczny10y ago

I'm using Monet, because I want to make an impression on my clients.

1 more reply

jentulman10y ago

We just throw some Pollock on the box at random, but there's some more detailed Seurat dotted around the stack.

koliber10y ago

I'm not familiar with the others, but Dali is my choice for surreal-time operating system development.

iamcreasy10y ago

We are using Apache Van^Gogh. But it's trendy to use Hirst though.

michael-the110y ago

Love Van^Gogh in combination with a Munch cache. Recently went to the Van^Gogh conference where they had a great talk on this topic. [0]

[0] http://www.vangoghmuseum.nl/en/whats-on/exhibitions/past-exh...

1 more reply

kibwen10y ago

I suspect this is being downvoted because VG has a reputation for being notoriously unstable.

imrehg10y ago

We get popular results with Banksy, though come to think of it, not sure if anyone knows who our programmers are...

logicrook10y ago

I'm surprised async web framework as old as Warhol, Schiele or even Dali can keep up with the modernities and constant advances of JS and html5. Aren't they too old-fashioned?

And how can Dali be more surreal than using a language designed to animate monkeys on webpages for writing full-blown applications?

vog10y ago

I prefer the Hundertwasser framework, developed by 100water. Not sure how they achieved that, but this framework almost forces me to produce beautiful code.

dvirsky10y ago

You should definitely try Pollock. It's a bit rough, and the code is messy and hard to understand - but very powerful.

TheOtherHobbes10y ago

I've had good results from Emin. But it can be a bit temperamental.

szatkus10y ago

I was little terrified after reading the first sentence...

mihaifm10y ago

Do you have references for these? Google doesn't give me much.

iamcreasy10y ago

Salvador Dali is the full name. I'll let you decide how serious it is.

kibwen10y ago

Just having a little fun, friend. :)

leni53610y ago

An "actual" piet quine:

http://mamememo.blogspot.hu/2009/10/piet-quine.html

For me the image doesn't load, it's archived on stackexchange fortunately:

https://codegolf.stackexchange.com/questions/23193/output-an...

    $ ../npiet-1.1/npiet quine.gif > quine2.gif
    $ diff quine.gif quine2.gif

It's freakin' impressive.

greenpenguin10y ago

I had an interesting time writing a JIT for Piet some time ago. Piet is a pretty weird language in a few non-obvious ways. From what I remember:

* Execution moves between blocks of colour. Flood fill algorithms are a valid compiler optimisation!

* Instructions are encoded in the difference between colour blocks.

* Piet is otherwise a fairly straightforward stack machine.

frobozz10y ago

I wouldn't trust these programs to work. The fibonacci one certainly doesn't.

When the explanatory line in the fibonacci example first hits the left hand side of the program, the Direction Pointer appears to be being rotated anti-clockwise.

Were it rotated clockwise, as-per the spec, it would go up, hit the black block above, and eventually end up in an infinite loop.

The command executed on entry to that block is PUSH (pale to normal yellow), so it shouldn't have any effect on DP.

S4M10y ago

ball_of_lint10y ago

Like a qr code but without needing internet. Could be cool for geocaching

dTal10y ago

AstroJetson10y ago

I was going to attempt a humorous comment of "I prefer a language that supports recursion, so I use Escher". But then my brain went, "think there already is an Escher". There is one, it's from 1995.

Are programming languages about to hit the same problem as musicians, thinking up that cool but unused band name?

Radle10y ago

The Pi calculator gave me the rest.

pygy_10y ago

http://www.dangermouse.net/esoteric/piet/piet_pi_big.png

> Richard Mitton supplies this amazing program which calculates an approximation of pi... literally by dividing a circular area by the radius twice. Richard says:

    The output is printed without the decimal
    point after the 3.

    Naturally, a more accurate value can be
    obtained by using a bigger program.

qznc10y ago

Any museum wants to host an exhibition?

j / k navigate · click thread line to collapse