Dweets awesomed by u/e4494s

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: #Food

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TGY

function u(t) {

for(c.width|=w=i=214;i--;)
for(y=62+8*S(p=t+i/45)**2;y++<120;x.fillRect(9*i,9*y|0,9,9))
x.fillStyle=R(g=80+45*S(p+y/20)**2,g+y/9,3*g)

Aug 29 2021 1:02 PM UTC

}// 133/140

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#windows11

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TGY

remix of d/23672 by u/TGY

function u(t) {

with(Math)for(c.width|=0,i=3530;i--;x.fillRect(30*X-r/2,30*Y-r/2,r,r))X=i%99,Y=i/99,r=6+18*abs(sin(X*Y/30*(t%30))),x.fillStyle=R(0,9*r)

Aug 29 2021 11:04 AM UTC

}// 135/140

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see the bigger picture

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rodrigo.siqueira

remix of d/23669 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`sepia(`
A=a=b=.8/t;s=400
for(i=1e4;--i;b=A,A=a)x.fillRect(900+a*s,480+b*s,1,t<5),a=.4-b+Math.abs(a/2+1/b/2e3)*(A/3-.5)

Aug 29 2021 12:23 AM UTC

}// 134/140

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Axon formation around a multinucleate alien cell

u/sigveseb

Nice!
u/Toby

Fab! Do you have a source reference for the kind of iterated formula you're using?
u/rodrigo.siqueira

You can see the original equation by changing the to "s=70" and the end to: a=1-b+Math.abs(a)
u/rodrigo.siqueira

It's based on the "Gingerbreadman Map" #gingerbreadman https://www.dwitter.net/d/14641 I don't understand the details but I know that "Even the simplest mathematical expressions, when interpreted as dynamical systems, yield fractals."
u/Toby

Ahhhh yes of course! I remember Gingerbreadman now! Thank you Rodrigo!

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e4494s

function u(t) {

with(x){s=1920;r=Math.random;f=frame%500;if(t%9<.1)c.width=1920;fillStyle=R(f,f,f);fillRect(r()*s,r()*s,10,10);drawImage(c,t%3,t%3)}

Aug 28 2021 5:03 PM UTC

}// 132/140

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rodrigo.siqueira

remix of d/23665 by u/rodrigo.siqueira

function u(t) {

A=a=b=.8/t;s=130
for(i=1e4;--i;b=A,A=a)x.fillStyle=R(a*50,x.fillRect(840+a*s,470+b*s,.9,t<1),30*b),a=1-b+Math.abs(a/2+1/b/2e3)*C(a-a/2)

Aug 28 2021 4:25 PM UTC

}// 135/140

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Multinucleate alien cell

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Joachim

function u(t) {

eval(unescape(escape`󨼮󭽩󩍴󪍼󟝴󟼰󞭤󟝰󟝛󧜊󩌫󚼊󩌥󞜼󝬦󙭰󛭰󭝳󪌨󮽸󞬹󝬰󚽓󚍴󚜪󜬰󜌬󮜺󝜴󜌬󬼺󜜬󬬺󤼨󭌪󞜩󯜩󒭦󫽲󚍩󘍯󩬠󬌩󮽳󟝩󛭳󒭸󛭦󪝬󫍒󩝣󭌨󪜮󮌭󬼯󜬬󪜮󮜫󟝳󛼵󜌬󪜮󬼪󟜱󛬰󝜬󬼯󝌰󚜊󮌮󩭩󫍬󤭥󨽴󚍩󛭸󚽳󛽩󛭲󛍩󛭹󛝳󛍳󛼹󛍳󚜊󮌮󩭩󫍬󤭥󨽴󚌰󛌵󝌰󛍳󛌲󚝽`.replace(/u../g,'')))

Aug 28 2021 1:39 PM UTC

}// 140/140

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old, #infinite #road

u/Joachim

#perspective
u/rodrigo.siqueira

Almost a car #game. Better than Atari's Enduro.
u/vain

just wow!

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tomxor

remix of d/23413 by u/tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𭀿𭰽𨰮𭱩𩁴𪀦👩🐸𜰲𜀺𠐽𠠽𥐽𥠽𜀻𪐭𛐻𪰽𤰦𤠼𝐿𛠱𜠵𛑒𛰴𜀺𜀬𥐭👫𚡡𛁖𛐽𪰪𨠩𮀮𩡩𫁬𤡥𨱴𚁘👩𙑷𛁙👩𛱷𛀱𛁓𯁒🀵𚐬𤰽𥀨𥀨𠰨𦀯𜐰𚐪𠰨𦐯𞐫𭀩𚐩🁙𛰹𛐳𚰳𚡃𚁴𚐬𤠽𣑡𭁨𛡨𮑰𫱴𚁡👘𛑁𛁢👙𛑂𚐻𠐫👕𚱷𛁂𚰽𥠪🐮𞐬𠐥👷𛁖𚰽𛠱`.replace(/u../g,'')))

Jul 28 2021 12:57 AM UTC

}// 140/140

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"This Thing" Capturing a Marble #Physics

u/magna

!!!
u/katkip

OMG

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tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𭀿𭰽𨰮𭱩𩁴𪀦👩🐸𜰲𜀺𚁁👂🐸𛁕👖🐰𚐻𪐭𛐻𪰽𥀦𤠼𝐿𛠲𝐭𤠯𜠰𞠰𛁕𛐽𪰪𨐬𥠭👫𚡢𚑸𛡦𪑬𫁒𩑣𭀨𦀽𪐥𭰬𦐽𪐯𭰬𜐬𥁼𤠼𝐩𛁔👓𚁘𛰶𚐫𠰨𦐯𝠩𚱙𛰶🠸𛁒👍𨑴𪀮𪁹𬁯𭀨𨐽𦀭𠐬𨠽𦐭𠠩𞱁𚰽𥐬𠠫👖𛁁𚰽𭰬𠐥👷𛁖𚰽𛠱𜠵`.replace(/u../g,'')))

Jul 28 2021 12:08 AM UTC

}// 134/140

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Impossible Marble #Physics

u/tomxor

Inspired by d/23398. Uses raster/2d-voxel based intersection
u/Xen

love it!
u/magna

HOW?!
u/katkip

how
u/tomxor

It's particle physics, but the collisions are with implicit volumes. So rather than checking against a specific object, each pixel is intersected with the circle, if the pixel is filled and intersects, then it contributes velocity to the particle along the collision normal (the vector between the pixel and the point), the deeper the intersection based on the radius the greater the contribution... this is not correct at all and creates lots of phantom momentum, but is very simple and shares the code with drawining the screen.

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jellyedwards

remix of d/17854 by u/rodrigo.siqueira

function u(t) {

eval(unescape(escape`󤬽󤼨󭌩󚬪󜬪󜼵󜌊󨼮󭽩󩍴󪍼󟝺󟜲󝜊󩬽󚍘󛍚󚜽󟭸󛭦󪝬󫍒󩝣󭌨󦌪󮬫󦬪󞜬󦬪󮬫󣝡󭍨󛭥󮍰󚌭󚌨󦌭󜼲󚜪󚬲󚼨󦬭󜜶󚜪󚬲󚜯󮬩󚭒󛌳󛌳󚜊󩭯󬬨󪼽󝍥󜼻󪼭󛜻󮌮󩭩󫍬󤭥󨽴󚌹󝜳󛝃󚍫󚜪󮬬󝌱󜌫󤬬󜬬󤼨󪼩󚭺󚜩󩬨󪼯󝬴󛍫󙜳󜬩`.replace(/u../g,'')))

Jun 28 2021 11:54 PM UTC

}// 126/140

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curvature of space#time

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Tekmap

remix of d/18464 by u/Xen

function u(t) {

for(X=f=c=>S(C(t*c/d)*t),Y=t/8-1,i=4e3;i--;x.fillRect(i/2,t*60,(f(X=i/960-2)*f(Y))*(d/Y),1))x.fillStyle=R(t,X,T(r=X*X+Y*Y)*235),d=r>.7||T(r)

Jun 27 2021 8:56 PM UTC

}// 140/140

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#Glass #Dome #Domus

u/GreyHope

#shiny

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