Dweets awesomed by u/lekzd

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

function u(t) {

with(x)for(c.width|=j=88,scale(9,9);i=j-->>3;arc(107+3*(9-i)*S(p/2),60,6*i,A=(j%8-6||beginPath(stroke()))*11/7+p/4,A))p=S(a=5*t-i/5)+a

Feb 9 2019 11:07 PM UTC

}// 134/140

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Square dance #beesandbombs

u/katkip

#loop

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rodrigo.siqueira

function u(t) {

Xp=X=Y=t/800
x.globalAlpha=.1
for(i=2e3;i--;){
X=Xp*Xp-Y*Y+.9*Xp-.6013*Y
Y=2*Xp*Y+2*Xp+.5*Y
Xp=X
x.fillRect(1300+X*820,740+Y*400,2,2)
}

Feb 9 2019 3:14 PM UTC

}// 135/140

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Tinkerbell Map is a chaotic #attractor dynamical system, as described in https://en.wikipedia.org/wiki/Tinkerbell_map

u/rodrigo.siqueira

"Origin of the name: the graphical picture shows a similarity to the movement of Tinker Bell over Cinderella Castle, as shown at the beginning of Disney films."
u/katkip

You can replace Xp with p

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katkip

remix of d/12236 by u/butcherfly

function u(t) {

q=t/4;for(i=0;i<198;i++){x.fillStyle=R(128+C(t*25-i/9)*128);x.beginPath();x.arc(960+S(i*q+t)*200,540+C(i*q+t)*200,1200-6*i,0,7);x.fill()}

Feb 8 2019 12:27 PM UTC

}// 138/140

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pavel

function u(t) {

for(c.width|=p=710/339,x.scale(i=9,9);i--;x.arc(107+q*C(a=i%2*3+~~T*p),60+q*S(a),60-q,a-=p,a))T=t++/2%3,q=T%1*60
x.stroke()

Feb 7 2019 8:08 PM UTC

}// 123/140

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u/katkip

Nice!

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pavel

remix of d/2336 by u/cantelope

function u(t) {

for(i=k=c.width|=0;i--;x.arc(X,Y,k*k|1/z,k=0,7))z=1-(t*30+i)%99/99,x.moveTo(X=960*(z+i**.9%1-.5)/z,Y=540*(z+i**.6%1-.5)/z)
x.fill('evenodd')

Feb 7 2019 7:27 AM UTC

}// 140/140

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Golfed enough for round bodies

u/mxfh

Welcome to the #arc side
u/13thptr

lol

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cantelope

function u(t) {

eval(unescape(escape`𩡯𬠨𮁛𩠽𙱦𪑬𫁓𭁹𫁥𙱝👠𘰰𜀶𜡠𛁸𛡦𪑬𫁒𩑣𭀨𜀬𜀬𭰽𜡥𜰬𭰩𛁩🐹𞐻𪐭𛐻𮀮𩡯𫡴🐹𞐫𪀯𞀫𙱰𮀠𨐧𛁸𛡦𪑬𫁔𩑸𭀨𙰪𙰬𭰭𚁩𚠪𝐫𭀪𚁷𚱨𚐯𝀩𙐳𩐳𛁩𚠪𝰥𭰫𤰨𪐫𭀪𜰩𚡩𚠳𚐩𮁛𩡝👠𪁳𫁡𚀤𮰨𪀽𪐪𪐩𚱴𚠸𜀰𯐬𞐹𙐬𝠰𙐬𙁻𜐯𚀱𚱨𛰱𩐳𚑽𨀻`.replace(/u../g,'')))

Feb 6 2019 8:45 PM UTC

}// 140/140

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u/katkip

#compressed
u/sigveseb

Cool
u/magna

I love this!
u/iverjo

Trippy! Very good

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pavel

remix of d/9294 by u/cantelope

function u(t) {

for(i=w=c.width|=q=6.2832;i--;x.arc(960+S(p=(i>>1)*q/9-t)/Z*w,540+C(p)/Z*w,Z*Z,a=-t%q,a))Z=2+(i-1&-2)%98-8*t%2,i%98||x.beginPath(x.stroke())

Feb 6 2019 2:02 AM UTC

}// 140/140

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#uncompressed

u/cantelope

gotta hand it to you 👏
u/pavel

Playing it safe on the arc angle, modding it by 2pi just to avoid the bug on Safari.

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lekzd

function u(t) {

t?0:x.translate((c.width=h=255)/2,75);for(i=0;i<h*4;i++)k=i+S(t)<<3,f=_=>(x.fillText(_,k,i),x.rotate(1)),f`🔵`,f`🔴`

Jan 19 2019 4:27 PM UTC

}// 114/140

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First one

u/katkip

nice! that t?0: tehnique is good
u/joeytwiddle

This game me Ikaruga flashbacks https://youtu.be/kIxKjmrCrS4?t=1062

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yonatan

remix of d/9776 by u/yonatan

function u(t) {

T=f=>f(i)+f(i*i)*i**.5*t
for(i=9e3;t<4&&i--;q>9e3|q<99&t<2&&x.fillRect(960+a,540+b+t*t*2,4-t,4-t))a=T(S),b=T(C),q=((a*a)**.5-99)**2+b*b

Jan 18 2019 8:29 PM UTC

}// 135/140

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Xen

function u(t) {

for(i=99;i--;)x.fillRect(1e3+C(t*i)*t*59,540+S(t*i)*t*59,t,t)

Jan 18 2019 6:47 PM UTC

}// 61/140

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Big Bang

u/metamero

Awesome!
u/DataMeta

Niiice! Wallpaper worthy
u/katkip

It has that black line error in the right

dwitter.net | lekzd (875)