Dweets awesomed by u/smtsjhr

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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pavel

remix of d/20901 by u/pavel

function u(t) {

for(i=c.width|=p=g=>(g(0)?k&3:k/4)*200+130*g(.8+(~~k+k/4&1||-1)*(i%120*41/13+5*t));k=--i/120;)x.fillRect(560+p(S),240+p(C),9,9)

Dec 4 2020 9:12 PM UTC

}// 127/140

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Moving #illusion

u/pavel

Discovered this randomly when golfing the original. Not sure why it happens.
u/danny@hille.dk

cool effect: the "feature" is caused by not truncating k=--i/120 -> k=--i/120|0 disables this feature :-)
u/KilledByAPixel

👍
u/danny@hille.dk

better solution: for(i=c.width|=p=g=>(g(0)?k&3:~~k/4)*200+150*g((k&1||-1)*(i%120*41/13+5*t));k=--i/120;)x.fillRect(560+p(S),240+p(C),9,9)

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pavel

function u(t) {

for(i=c.width|=0;i--;x.fillRect(X,540+200*C(a),-150,7))X=i%960*2,x.fillStyle=`hsl(${q=X/8+60*t},69%,${42+32*S(a=(q/32%1+(i>960))/.32)}%`

Dec 4 2020 8:45 PM UTC

}// 136/140

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Ribbons

u/pavel

Dynamically swapping the draw order to get proper overlapping. Change i>960 to 1 or 0 to see how this works.
u/Qwitter

cool, and thanks!

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rodrigo.siqueira

remix of d/20913 by u/rodrigo.siqueira

function u(t) {

for(i=996;i--;x.fillRect(250*X,250*Y,2e3,1))X=t/3,Y=i/230,h=300*S(Y%S(m=X/2%S(p=C(q=Y*S(X*3+Y))*2))),x.fillStyle=R(h*p,h*m,h*q)

Dec 4 2020 5:54 PM UTC

}// 127/140

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Metallic Colors

u/danny@hille.dk

Excellent reveal
u/taupelink

Double-whoa!

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Lynx

function u(t) {

for(i=0;i<100;x.fillStyle=R(127,++i*2,i)){y=540+0.5*7.5*t*t*(i%2?-1:1);x.fillRect(i*7.5*t,y,20,20)
x.fillRect(1920-i*7.5*t,y,20,20)}

Dec 4 2020 2:38 PM UTC

}// 132/140

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fun with physics formulas (newbie to dwitter)

u/joeytwiddle

When you pop into the supermarket because you need two eggs

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rodrigo.siqueira

remix of d/20902 by u/taupelink

function u(t) {

for(i=996;i--;x.fillRect(250*X,250*Y,2e3,1))X=t/2,Y=i/230,h=300*S(Y%S(m=X/2%S(p=C(q=Y*S(X/3))*2)*2+T(i*i**t)/6)),x.fillStyle=R(h*p,h*m,h*q)

Dec 4 2020 5:29 AM UTC

}// 139/140

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Noisy signal

u/taupelink

whoa
u/magna

WOWZA!
u/SMON

haha...not sure why - I guess aliasing - but it sparkles when I scroll :D

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MrHaila

remix of d/20909 by u/MrHaila

function u(t) {

c.width^=0
for(i=0;i<20;i++){
o=S(S(t*(i+1))*(S(t)-0.5))*440
q=i*98
e=i*2.5
x.fillRect(q,400,50,200+o+e)
x.fillRect(q,700+o-e,50,200-o+e)
}

Dec 3 2020 10:16 PM UTC

}// 139/140

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u/magna

Fun!
u/Odog8

#default

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lerc

remix of d/20889 by u/lerc

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑻𥠽𨐽🡓𚁴𚡡𚐊𫀽𨐽🠨𩁲𨑷𢑭𨑧𩐨𨰬𛑷𛀭𪀩𛁖𚁡𚐫𜐩𒡳𩑴𥁲𨑮𬱦𫱲𫐨𜐬𛠱𞀬𛐮𜐸𛀱𛁷🐹𝠰𛁨🐵𜠰𚐊𩡩𫁬𤱴𮑬𩐽𨁨𬱬𚀤𮱬𚀮𞀩𚡷𯐠𞐹𙐵𜀥𨀊𩡩𫁬𤡥𨱴𚁵🐨𫀨𜠮𜐩𛑬𚀱𚐩𚠱𞀰𛀰𛀹𛀹𚐊𩡩𫁬𤡥𨱴𚀭𭐭𞐬𜀬𞐬𞐩𯐻`.replace(/u../g,'')))

Dec 2 2020 10:27 AM UTC

}// 135/140

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Another touch of psychedelia. Tweaked for HSL not resizing canvas, nicer effect

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pavel

function u(t) {

for(i=c.width|=0;i--;x.fillRect(660+(p>>2)*200+130*C(a=Math.PI/4+(p+p/4&1||-1)*(369/13*d+3*t)),240+p%4*200+130*S(a),d,d))d=i%120/9,p=i/120|0

Dec 1 2020 8:51 PM UTC

}// 140/140

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#beesandbombs demake https://twitter.com/beesandbombs/status/1327…

u/rep_movsd

If you stare a bit, you see white lines completing the circles - an optical illusion
u/danny@hille.dk

save 9 bytes for(i=c.width|=0;i--;x.fillRect(660+(p>>2)*200+130*C(a=.8+(p+p/4&1||-1)*(28.4*d+3*t)),240+p%4*200+130*S(a),d,d))p=i/120|0,d=i%120/9
u/danny@hille.dk

120/9 = 40/3
u/danny@hille.dk

129 bytes -> for(m=120,i=c.width|=0;i--;x.fillRect(660+(p>>2)*200+m*C(a=.8+(p+p/4&1||-1)*(28.4*d+3*t)),240+p%4*200+m*S(a),d,d))d=i%m/9,p=i/m|0

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katkip

remix of d/16327 by u/joeytwiddle

function u(t) {

x.fillStyle=`#00ac`
for(i=1920;i--;)y=69*t,Z=690/y,X=(i-960)*Z,x.fillRect(i,y+t*t*8+30*S(S(X/389+Z*11)*C(X/389-Z*6-t)+C(X/69+Z*9))/Z,.2,6)

Dec 1 2020 10:01 AM UTC

}// 138/140

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ocean

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rodrigo.siqueira

remix of d/20838 by u/rodrigo.siqueira

function u(t) {

for(i=3e3,f=g=>i*g(i%2?i*i:i**t);i--;x.fillRect(960+f(S)*C(t),540+f(C)*C(t),K=4/(1+t),K))x.fillStyle=R(i/99,i/3,i,),c.style='filter:invert('

Nov 29 2020 4:28 PM UTC

}// 140/140

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Particle collision and decay - Hadron Collider #spiral

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