Dweets awesomed by u/tactical_retard

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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donbright

function u(t) {

w=(c.width=999)/2
for(i=-t;i<t;i+=.1)for(j=-t;j<t;j+=.1){
B=1+i*i+j*j
X=S(t)*i/B
Y=j/B
Z=(B-2)/B/2
x.fillRect(w+(X+Y+Z)*w,w+(Y-Z-X)*w,2,2)}

Nov 8 2021 6:45 AM UTC

}// 139/140

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stereographic projection of the plane (in this case, a 0.1 grid to infinity) onto the sphere. aka Moebius Transformation. see also https://hyrodium.tumblr.com/post/13708635481… and https://en.wikipedia.org/wiki/Stereographic_…

u/donbright

#math #stereographic

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Joachim

function u(t) {

eval(unescape(escape`󨼮󭽩󩍴󪌽󜼰󜌊󭽩󭍨󚍸󚝦󫽲󚍩󟜲󜌻󪜭󛜻󬽴󬭯󪽥󤭥󨽴󚌨󪜫󭌪󞜩󙜱󞜪󜜵󛌱󝜰󛌱󝜬󛝩󙝓󚍩󚜪󝌰󛜳󜌩󚝦󪝬󫍒󩝣󭌨󜜲󜌫󪜪󜬱󙜸󝌬󜜲󞜫󤼨󭌪󝬰󚜯󝌬󜬰󛌲󜌩󛍦󪝬󫍓󭍹󫍥󟜧󘼰󜌰󝜧󛍦󪝬󫍒󩝣󭌨󜜲󜌫󚍩󚬹󚽴󚬹󚜥󪜪󞜬󨜽󜜲󜌭󚍩󚬹󚽴󚬹󚜥󪜪󝜬󨜯󞜬󨜯󞜩`.replace(/u../g,'')))

Nov 7 2021 9:17 AM UTC

}// 140/140

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City Train

u/Joachim

#city #train
u/danny@hille.dk

Sooo cute ❤
u/Sab

Hi
u/vain

impressive idea and execution

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taupelink

remix of d/24295 by u/taupelink

function u(t) {

for(m=t?0:7e4;X=1+S(m),Y=3*S(m*m--);x.fillRect(1e3*X,180*(3+Y),i*S(Y),q))x.fillStyle=R(i=m%256,q=i*(3-2/Y*S(X))/3,q/=1+C(Y)/2,(m>>8)/256)

Nov 6 2021 10:20 PM UTC

}// 137/140

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d/24306

u/taupelink

Much credit to u/pavel for the comment he left on d/23578, with sample code to illustrate a way of making these collages in a single loop execution.
u/magna

This is awesome!
u/neimad

thank god, the old way was getting kind of annoying.
u/Xen

love it!

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Joachim

function u(t) {

eval(unescape(escape`󛼯󩭩󫍬󘍴󪍥󘍳󬍡󨽥󒭺󟝣󛭷󪝤󭍨󟜳󜌰󒭷󪝴󪌨󮌩󩭯󬬨󪜽󞜻󪜭󛜻󬽴󬭯󪽥󚌩󚝬󪝮󩝔󫼨󨜽󞌰󚼲󜌪󪜬󨬽󞜹󚽃󚍴󚬹󚽩󚜪󞜩󛍭󫽶󩝔󫼨󨜫󤼨󭌪󞜫󪜩󚬹󛍢󚼲󜌩󛍩󟽬󪝮󩝔󫼨󨜬󨬩󞭲󩝣󭌨󭌪󝌰󙝺󛌹󛌹󛌹󚜬󩭩󫍬󤭥󨽴󚍩󙬦󚍩󚬹󚽴󚬸󚜥󜬰󚬱󝜬󜜲󝼬󪝼󯍺󛌭󪝞󜬩`.replace(/u../g,'')))

Nov 6 2021 10:04 AM UTC

}// 140/140

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The millipede runs once more #creepy

u/vain

incredible - the riding centipede worm ;-)

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ArthurThuczsec

remix of d/24289 by u/ciaccodavide

function u(t) {

eval(unescape(escape`𘑴𙠦𚁤👛𦀽𦐽𨐽𭠽𞐹𧐬𫱮𪱥𮑤𫱷𫠽𩐽🡤𦱥𛡫𩑹𠱯𩁥𛑳𧐽𜐬𫱮𪱥𮑵𬀽𩐽🡤𦱥𛡫𩑹𠱯𩁥𛑳𧐽𜀩𛁸𦱦🐧𩡩𫁬𤡥𨱴𙱝𚁘𚰽𭠪𠰨𨐫🐨𩁛𜡝𯀭𩁛𜁝𚐯𞐩𛁙𚰽𭠪𤰨𨐩𛁳🐳𝰬𬰬𭠽𞐬𮀮𩡩𫁬𤱴𮑬𩐽𙰣𙰫𚁘𧡙𯀰𚐩`.replace(/u../g,'')))

Nov 4 2021 6:45 PM UTC

}// 126/140

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golf and remix

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ciaccodavide

function u(t) {

eval(unescape(escape`𘑴𙠦𚁤👛𨐽𭠽𜁝𛁘👙🐹𞐬𫱮𪱥𮑤𫱷𫠽𩐽🡤𦱥𛡫𩑹𠱯𩁥𛐳𝱝🐱𛁯𫡫𩑹𭑰👥🐾𩁛𩐮𪱥𮑃𫱤𩐭𜰷𧐽𜀩𛁸𦱦🐧𩡩𫁬𤡥𨱴𙱝𚁘𚰽𭠪𠰨𨐫🐨𩁛𜡝𯀭𩁛𜁝𚐪𛠱𚐬𦐫👶𚡓𚁡𚐬𬰽𜰲𛁳𛁸𦱦𧐨𦀫𠰨𨐩𚡳𚰸𛁙𚱓𚁡𚐪𬰫𞀬𞐬𞐬𭠽𝠩𚐠`.replace(/u../g,'')))

Nov 4 2021 9:43 AM UTC

}// 133/140

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driving a paintbrush #interactive

u/ciaccodavide

left and right arrow to control the brush direction (if it gets out of bounds restart the dweet)
u/ciaccodavide

try this version in a new dweet (acceleration control with up arrow, but I couldn't golf it enough): !t&&(d=[a=v=0],X=Y=99,onkeydown=e=>d[e.keyCode-37]=1,onkeyup=e=>d[e.keyCode-37]=0),x[f='fillRect'](X+=v*C(a+=(d[2]|-d[0])*.1),Y+=v*S(a),s=32,s,x[f](X+C(a)*s+8,Y+S(a)*s+8,9,9,v+=d[1]&v<6?2:v>0?-.1:0))
u/Joachim

`t?onkeydown=e=>d[e.keyCode-37]=1:(d=[a=v=X=Y=0]),onkeyup=e=>d[e.keyCode-37]=0,x[f='fillRect'](X+=v*C(a+=(d[2]|-d[0])*.1),Y+=v*S(a),s=32,s),x[f](X+C(a)*s+8,Y+S(a)*s+8,9,9),v+=d[1]&v<6?2:v>0&&-.1

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magna

function u(t) {

R=540,Y=R-t*99
for(s=0,d=-1;s<=R*R-Y*Y;s+=d+=2);
X=d/2
x.fillRect(960-X,R+Y,X*2,1)

Nov 2 2021 10:36 PM UTC

}// 82/140

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#circlechallenge No trig, no direct square root: Just using the Pythagorean theorem + the fact that sums of odd numbers give perfect squares

u/Xen

very clever sir

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magna

remix of d/24280 by u/magna

function u(t) {

c.width=f=255,k=40*(t+8)
for(i=f;i--;)for(j=f;j--;x.fillRect(i,j,1,(X*X+Y*Y)**S(t)**2-.2+S(k*X)*S(k*Y)*S(k/20/f)+(i&j)&1))X=i/f-.5,Y=j/f-.3

Nov 2 2021 6:46 PM UTC

}// 139/140

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Magic!

Show more comments…
u/magna

Keeps evolving #waitforit
u/cantelope

dafuq
u/magna

It all started with d/24264 courtesy of u/Jabo
u/taupelink

wow
u/Joachim

#sierpinski
u/Xen

love it!
u/donbright

beautiful
u/andrea270872

terrific stuff... I will have to study every character of your code!!
u/Jabo

Hero
u/joeytwiddle

magic ❤️

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magna

remix of d/24273 by u/magna

function u(t) {

c.width=f=255,k=40*t
for(i=f;i--;)for(j=f;j--;x.fillRect(i,j,1,(X*X+Y*Y)**S(t)**2-.2+S(k*X)*S(k*Y)*S(k/20/f)<0?X-Y+.5:0))X=i/f-.5,Y=j/f-.3

Nov 2 2021 4:34 PM UTC

}// 138/140

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Keeps on giving...

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cantelope

function u(t) {

x.fillRect(960+((b=t?b:[0,h=520,h/22.7,0])[0]+=b[2]),h+(b[1]+=b[3]),9,9,b[2]-=b[0]/h,b[3]-=b[1]/h)

Nov 2 2021 12:30 PM UTC

}// 98/140

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#circlechallenge (no sine/cosine)

u/donbright

does fillrect have 6 parameters here?
u/cantelope

heh. it only looks at the first 4. i'm not actually saving any space by including 6 parameters, but why not? :)
u/cantelope

can you see how this circle method works? there is an array with 4 elements, the first 2 being positions (x,y), and the last 2 being analogous to a vector (in physics) with magnitude and direction, or simply (velocity-x, velocity-y). The velocity vector is added to the position coordinates once per frame and is itself adjusted in a way to create a perfectly circular "orbit" about the origin. Interestingly, this approach can be extended into 3 or more dimensions, and involve, obviously, more than 2 bodies. 3-body orbital chaos can be very interesting and beautiful, e.g. https://code.dweet.net/full/2w8z

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