Dweets awesomed by u/geb

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.

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Current theme challenge: #Food

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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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katkip

function u(t) {

Z="ahiabgcb"
x.beginPath(x.lineWidth=8
);for(i of Z){
s=((i.charCodeAt(0)-97)%9)+1
x.lineTo(400+(s%3)*300,300+((s-.1)/3|0)*300)
}x.stroke()

Dec 4 2020 9:47 AM UTC

}// 139/140

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Magical sigil generator. Replace Z with any word (lowercase only). It's a small remake of: https://sigilscribe.me/

u/katkip

Z="ecgkoe" is also nice
u/danny@hille.dk

and Z="sexysin" also looks nice... and Sin() is sexy
u/danny@hille.dk

Borg cube Z="weareborgyouwillbeassimilatedtothecubewithyou"
u/DataMeta

fun little #generator

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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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pavel

remix of d/20898 by u/cantelope

function u(t) {

for(c.width=i=640;i--;T=!T&&!x.beginPath(x.stroke()))j=i/16-T*i&30,r=(j+4)/12<<6,x.arc(320+r*C(a=j/1.91+t),180+r*S(a),i&30?0:32,0,7)

Dec 4 2020 3:01 AM UTC

}// 132/140

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Metatron's Cube

Show more comments…
u/pavel

Golfed this one a little bit :) #symmetry
u/pavel

i=[4 bits for start circle index][4 bits for end circle index offset from start circle][1 bit to decide start vs end]
u/pavel

That's 2**9=512 which is too small for power-of-two circle sizes but start clicle index wraps around so larger i is only redundant.
u/pavel

end-circle-offset == 0 is easy to check and means start and end are same circle, so draw that circle.
u/pavel

Otherwise draw the current circle with radius 0 which is same as lineTo.
u/pavel

T=!T&&!x.beginPath(x.stroke()) starts/strokes the path every two circles.
u/pavel

Here is a version before all the bit hacking for(c.width=640,i=16;i--;)for(j=16;j--;x.beginPath(x.stroke()))for(k=2;k--;)q=(i+j*k)%16,r=((q+2)/6|0)*64,x.arc(320+r*C(a=Math.PI/3*q+t),180+r*S(a),!j*32,0,7)

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MrHaila

function u(t) {

c.width^=0
for(i=0;i<20;i++){
o=S(S(t*(i+1))*(S(t)-0.5))*800
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 10:13 PM UTC

}// 139/140

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Hello world!

u/Xen

welcome to the dwitter family!

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lerc

function u(t) {

eval(unescape(escape`𭁼𯀨𭰽𨰮𭱩𩁴𪀯🐳𚐻𥠽𨐽🡓𚁴𚡡𚐊𫀽𨐽🠨𮀮𩁲𨑷𢑭𨑧𩐨𨰬𛐳𜠰𛀭𜐸𜀩𛀨𥠨𨐩𚰱𚐪𜐲𞀩𒡮🐨𠰨𥠨𛠳𜠩𚐫𜐩𛰱𜀊𮀮𬱥𭁔𬡡𫡳𩡯𬡭𚀱𛁮𛀭𫠬𜐬𜰲𜀬𜐸𜀩𒡸𛡦𪑬𫁓𭁹𫁥👒𚁬𚀲𚐬𬐽𫀨𜠮𜐩𛁱𛐽𫀨𜐮𝐩𛀮𝐩𒡸𛡦𪑬𫁒𩑣𭀨𬐯𜠬𜀬𞐬𞐩𒠻`.replace(/u../g,'')))

Dec 1 2020 12:27 PM UTC

}// 139/140

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A touch of psychedelia

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pavel

function u(t) {

with(x)for(beginPath(fill()),T=!T,fillStyle=T?'#fff2':R(),i=710;a=i--/113;arc(960,540,300+99*f(28),a,a))f=n=>T?n:n&&S(n|n*t)*S(a*n)/n+f(n-1)

Dec 1 2020 5:14 AM UTC

}// 140/140

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u/Xen

nice style!
u/Xen

nice style!
u/DataMeta

big fan of this one
u/danny@hille.dk

This is awesome!
u/Qwitter

fantastic!

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ciaccodavide

function u(t) {

for(i=192;i--;)x.fillStyle=`hsl(0,0%,${i*.6}%)`,x.fillRect(i*10,0,192,2e3)
x.fillStyle=`grey`
x.fillRect(860+S(t)*860,440,200,200)

Nov 30 2020 11:51 AM UTC

}// 130/140

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Changing color opotical illusion

u/ciaccodavide

#illusion

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solendil

function u(t) {

eval(unescape(escape`𠐽𭀿𦰮𛠮𠐬𮱘𛁙𛁚𯑝𞡛𪐽𜐬𭰽𝰰𜁝𒡊🐨𚐽🡍𨑴𪀮𬡡𫡤𫱭𚀩𚠲𚡷𛑷𒡦𫱲𚁚🐳𜐹𚡩𚰫𚠪𛐮𝠻𦀽𢠨𦐽𢠨𢀽𣑡𭁨𛡨𮑰𫱴𚐩𛁈𚁘𛁙𚐫𦠾𭱼𯁁𛡦𪑮𩀨𨐽🡈𚁘𛑡𛡘𛁙𛑡𛡙𚐼𦠫𨐮𦠩𞰩𞱸𛡦𪑬𫀨𬀽𫡥𭰠𤁡𭁨𜡄𛁰𛡡𬡣𚁘𚰹𝠰𛁙𚰵𝀰𛁚𛀰𛀷𚐩`.replace(/uD./g,'')))

Nov 30 2020 10:42 AM UTC

}// 138/140

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Circle made of circles

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solendil

function u(t) {

eval(unescape(escape`𠐽𭀿𦰮𛠮𠐬𦱘𛁙𛁚𛁗𧑝𞡛𦱩🐳𧑝𒡊🐨𚐽🡍𨑴𪀮𬡡𫡤𫱭𚀩𚠨𜑥𜰭𤠩𒡦𫱲𚁒🐵𝀵𚡩𚰫𚠪𛐮𝠻𦀽𢠨𦐽𢠨𚐩𛁚👘𚱒𛁗👙𚱒𛁁𛡦𪑮𩀨𚁛𮀬𮐬𮠬𭱝𚐽🡘🁺𙡚🡸𙡙🁷𙡗🡹𚐻𚐻𮀮𩡩𫁬𤱴𮑬𩐽𨁨𬱬𚀤𮱘𚱙𯐠𞀰𙐵𜀥𨀊𮀮𩡩𫁬𤡥𨱴𚁘𚰵𜀰𛁙𛁒𛁒𚐊`.replace(/uD./g,'')))

Nov 30 2020 9:55 AM UTC

}// 140/140

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Statistical Geometry

u/katkip

very beautiful
u/rep_movsd

Like African pacthwork quilt

dwitter.net | geb (19013)