New #planet dweets

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t)*300,400,50,200) // draw 50x200 rects

} // 122/140

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    u(t) is called 60 times per second.
    t: Elapsed time in seconds.
    S: Shorthand for Math.sin.
    C: Shorthand for Math.cos.
    T: Shorthand for Math.tan.
    R: Function that generates rgba-strings, usage ex.: R(255, 255, 255, 0.5)
    c: A 1920x1080 canvas.
    x: A 2D context for that canvas.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Opposites

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ntsutae

function u(t) {

c.width=960
k=S(t/1e3)/1e3
x.fillStyle='Navy'
for(i=k;i<1e3;i++)x.lineTo(C(d=i**3)*270+480,S(d)*270+270)
x.fill()

May 15 2020 12:13 PM UTC

}// 113/140

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Planet

u/aleamb

#planet

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KilledByAPixel

function u(t) {

$='🗺🗺'
eval(unescape(escape`𨰮𭱩𩁴𪁼👆🐲𜀴𝐊𭱩𭁨𚁸𚑦𫱲𚁡𬡣𚁩🐱𜀲𜠬𝐴𜀬𝐰𜀬𜀬𝰩𛁦𪑬𫁒𩑣𭀨𜀬𜀬𡠬𡠩𞱩𛐭𞱦𫱮𭀽𙰹𞑥𫐢𙰩𨱬𩑡𬡒𩑣𭀨𪐿𚁓𚁩𚐪𜑥𞐫𭀪𪐯𞐩𙑆𞠰𛁩🱩𚠹𙑆𞠰𛁳👩🱩𙐹𞠨𨱬𪑰𚀩𛁆𚐬𬰩𒡸𛡦𪑬𫁔𩑸𭀨𙀬𛑴𚠹𞐥𡠬𜐰𝐰𚐻`.replace(/u../g,'')))

Apr 22 2020 12:16 AM UTC

}// 139/140

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🌎

u/KilledByAPixel

#earth #globe #space #planet

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rep_movsd

function u(t) {

eval(unescape(escape`𭁼𯀨𮀮𫐽𮀮𮠽𜐶𜀩𒡷𪑴𪀨𮀩𫐦𙡦𪑬𫀨𨑲𨰨𚁔🐷𝐰𚐫𫐬𮠫𫐬𫐭𛐪𜠬𜀬𝰬𨡥𩱩𫡐𨑴𪀨𩡩𫁬𤱴𮑬𩐽𤠨𥀬𫐬𜀬𛠰𜰩𚐩𚐬𨡥𩱩𫡐𨑴𪀨𬱴𬡯𪱥𤱴𮑬𩐽𤠨𫐬𥀬𜀬𚁺𙡭𚐪𛠳𚐩𛁥𫁬𪑰𬱥𚁔𚱺𛁺𚱺𛁋🐵𜀰𚱭𛁋𛰴𛀳𛀹𛰴𛑭𛱔𛀷𛠱𝰫𫐯𥀩𛁳𭁲𫱫𩐨𚐻`.replace(/u../g,'')))

Apr 6 2020 10:01 AM UTC

}// 140/140

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Planet

u/katkip

#space #planet

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tomxor

remix of d/10534 by u/tomxor

function u(t) {

eval(unescape(escape`𨰮𬱴𮑬𩐽𙱦𪑬𭁥𬠺𪑮𭡥𬡴𚀱𙰻𩡯𬠨𨐽𨠽𤀽𜰮𜐴𛁩🐱𩐴𞱰👩𙠴𛁳🐲𝀰𚱰𚡡𚠳𝐬𪐭𛐻𨐫🐨𚁴𚡩𛱢𙠱𚐭𨐫𨠪𤰨𨐪𤀩𚐯𜠬𨠫🐨𛑡𚡢𚱃𚁡𚡐𚐩𛰲𚑸𛡦𪑬𫁒𩑣𭀨𞀸𜀫𬰪𤰨𦐽𨠪𤀫𬀪𨠪𞐩𚡃𚀡𬀪𨐪𤀩𛀴𞐵𚱳𚡃𚁙𛑰𛰲𚐬𛠰𜰭𤰨𦐫𬀪𛠴𚐪𛠰𜰬𜐩`.replace(/u../g,'')))

Jan 18 2020 7:52 PM UTC

}// 140/140

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#space #planet not #saturn 2

Show more comments…
u/KilledByAPixel

👍
u/KilledByAPixel

can you link us to more info on these equations?
u/tomxor

i'm not sure i can, much of it is just from messing around here on dwitter, and all of the chaotic stuff i've been doing has evolved from some distant bifructation thing here ages ago. Which part are you interested in specifically? I can try to explain as far as I understand it.
u/tomxor

Assuming you are refering to the pattern rather than the mapping, it's essentially just a+=(R-a+b*S(a*P))/2,b+=(-a*b+C(a*P))/2 where i've generated R{0,1} deterministically with a basic LCG type PRNG that feeds off the variables themselves: t*i/b&1, everything else is mapping. For the pattern i've just been messing with the coefficients and number of itterations between fresh generation of R for my various other dweets, but ultimately it all started here d/15329 which I adapted from u/taupelink so maybe he can tell us what it's formal name is because I can't figure it out.
u/KilledByAPixel

thanks, i will look into it!
u/denzen

wow, amazing!
u/magna

wow!
u/denzen

a bit buggy in safari
u/tomxor

I can't see safari, but if it's anything like blink's renderer then the compositor seems to change it's bias torards ceiling into 256 for high alpha, at least when derived from antialiasing subpixel shapes as in this case. Firefox seems to be less biased and faster to boot, so the ring will dissappear around the back as it's supposed to as the pixel area approaches epsilon. These differences are inevitable when exploiting something as sensitive as antialiasing or downsampling.
u/rodrigo.siqueira

I'm trying to understand how the "R" part works in the equation. Do you know? I see it's a number that varies between a few values. Is it a sort of "radius"? Is it randomness important or can it be non-random? Why a constant doesn't work?
u/metamero

one of my favorites ever
u/tomxor

@rodrigo The R part (t*i/b&1) is just a smaller replacement for Math.random(), formally it's an LCG PRNG, informally it's a bunch of stuff I multiplied together modulo 2 that I found to be sufficiently unifom (it would be a terrible PRNG more generally if analysed in detail it's probably full of regularities).
u/tomxor

A replacement for 0|Math.random()*2 (floored) I meant to say.
u/rodrigo.siqueira

I was trying to understand what is the intuitive meaning of this value "0|Math.random()*2" in the equation. I am still not sure (and I am probably wrong) but It seems that adding this "R" value to variable "a" (X position), it will displace the image to the right or left and create a similar image. It seems that it also works as a radius (zoom factor).
u/tomxor

Well my intuition from my limited understand here is that it's kind of like a fork at each point in the path that [a,b] is taking, as long as R is uniform enough the bias in the function sort of emerges and makes [a,b] follow certain paths more than others... I imagine it like a stochastic marble rolling into certain grooves in a landscape, just goto roll enough marbles to start to see the grooves.
u/tomxor

Sounds a bit like 2d gradient descent O_o

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KilledByAPixel

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑦𫱲𚁡👴𯀰𛁩🐵𜀻𪐭𛐻𩡩𫁬𚁡𬡣𚀱𩐳𚰱𩐳𚡃𚁱𚐫𬰬𝐴𜀫𝐳𜀪𤰨𬐪𬐩𚱳𛁴🱳𚠳𞠱𩐳𛀰𛀷𚐩𚑢𩑧𪑮𤁡𭁨𚁱👡🱡𞡩𚱴𚠹𞑼𜀩𛁦𪑬𫁓𭁹𫁥👠𪁳𫀨𙁻𞐹𛑱𚠵𞑽𘀤𮰹𞐭𭀪𞑽𙐤𮱡🱴🀲🰹𞐭𪐪𜠺𪐺𭀿𞐹𞠰𯐥𚑠𛁳🐵𚡩𛰨𨐿𬐪𬐺𜰰𜀩`.replace(/u../g,'')))

Jan 10 2020 1:08 AM UTC

}// 138/140

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Space Scene Generator #space

u/sigveseb

pretty!
u/KilledByAPixel

#planet

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KilledByAPixel

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑦𫱲𚁢𩑧𪑮𤁡𭁨𚁦𪑬𫁓𭁹𫁥🐧𘰰𜀰𜠧𚐬𨑲𨰨𦀽𞐶𜀬𦐽𝐴𜀬𝐰𜀬𜀬𝰩𛁡𬡣𚁘𛁙𛀲𜀰𛀰𛀷𚐬𩡩𫁬𨁥𭡥𫡯𩁤𨀬𪐽𡠽𜡥𜰻𪐭𛐻𨱬𩑡𬡒𩑣𭀨𤐿𦀫𤰨𪐫𭀩𚠹𞐺𚁓𚁩𚐪𜑥𞐭𭀪𪐯𞐩𙑆𛁑🱙𚱓𚁩𚐪𦐺𪐪𞐥𡠬𪠽𤐿𜠹𞡩𙐹𚰳𛁪𚐩𤐽𪐼𜑥𜰻`.replace(/u../g,'')))

Nov 30 2019 8:30 AM UTC

}// 139/140

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Explore Uranus 🚀

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pavel

remix of d/16679 by u/DataMeta

function u(t) {

t||x.fillRect(0,0,2e3,2e3)
for(n=8;n--;x.clearRect(960+i*C(n?i:c-e),540-i*S(n?i:c+e),s=n/2||6,s))
i=320+781*Math.random()*!!n,c=t%11,e=c>6.3

Nov 21 2019 2:51 AM UTC

}// 140/140

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#planet

u/pavel

Small remix with a background that doesn't draw over the planet
u/rnbw

"n?i:c-e" indeed
u/DataMeta

Cool! :)
u/Xen

oooooooo nice

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DataMeta

function u(t) {

if(t<55/7)x.fillRect(960-320*C(t-(h=t>22/7?1:0)),540+320*S(h+t),8,8)

Nov 18 2019 11:39 PM UTC

}// 68/140

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ringed #planet

u/DataMeta

with starry backdrop: for(i=2e3;i--;)x.fillRect(i,t*99,r=4.6*Math.random(),r);if(t<121/7) x.clearRect(960+320*C(t-(h=t>88/7?1:0)),540-320*S(h+t),6,6)
u/katkip

awesome!

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tomxor

remix of d/15355 by u/tomxor

function u(t) {

eval(unescape(escape`挮獴祬攽❦楬瑥爺楮癥牴⠱✻景爨愽戽瀽㌮ㄴⱩ㴲攴㭩ⴭ㭡⬽⡲ⵡ⭢⩓⡡⩰⤩⼴Ɫ⬽⠰ⵡ⩢⭃⡡⩰⤩⼴⥩☱☦砮晩汬剥捴⠹㘰⬶㐰⩓⡙㵢⬲⤪䌨堽愯⸳⤬㠰〫㘴〪䌨天Ⱞㄬ䌨堫⸵⤪⨮㤫⸱籼⸱Ⱳ㴨楞愪椯琩┲⤻`.replace(/u(..)/g,"$1%")))

Aug 10 2019 11:46 PM UTC

}// 140/140

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M Class ? #planet #space

Show more comments…
u/tomxor

#waitforit
u/aleamb

nice!
u/13thptr

amazing! #d3 #shading
u/tomxor

Thanks :)
u/magna

O M F G
u/moto

great
u/katkip

looks good

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tomxor

remix of d/12820 by u/tomxor

function u(t) {

for(a=b=0,i=1e4;i--;x.fillRect(960+480*S(a*3)*S(b*7),540+480*C(a*3),1,.1))r=0|2*Math.random(),a+=.2*(r-a*S(b*3+C(a*3+C(a*3)))),b+=.4*(r-a*b)

Aug 9 2019 6:57 PM UTC

}// 140/140

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Chaos Planet #planet #space

dwitter.net | #planet