Dweets awesomed by u/mohd-akram

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: #Opposites

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rnbw

function u(t) {

for(i=-1;i++<35;)for(j=-1;j++<63;){x.fillStyle=R(0,p=((i/5-Math.abs(C(j/5+i/10+S(t+i/7)*2)))^6)*9+i*3,p*2);x.fillRect(j*30,i*30,30,30)}

Dec 12 2018 6:01 PM UTC

}// 135/140

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ocean motion

u/katkip

#waves
u/magna

I love the style!
u/iverjo

#water

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jylikangas

function u(t) {

eval(unescape(escape`景爨硛昽≦楬汒散琢崨〬〬眽㙥㌬眩ⱴ⨽㤹Ⱪ㴳㔰㬭⵩㭸⹦楬汓瑹汥㵒⡩ⱸ学崨含⡴☲⤪稭欯㈬夽稪㈫启㈬稯㔫欪㌬稯㠩ⱔ㴹㘰⭓⡓⡴⼹㤩⨲⤪㤹⵺ⰮㄫⅫ⤬硛晝⡔⵺⨳ⱙⱺ⨸Ⱝ琯㤥㤪欩⥺㵷⽩Ⱬ㴡⠭⵴☱㔩⩺`.replace(/u(..)/g,"$1%")))

Dec 11 2018 10:29 AM UTC

}// 140/140

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Ghost Train v2

u/jylikangas

HD resolution, brighter, clean beginning, different tunnel and more complex path
u/metamero

https://youtu.be/kNkvepA4AZU yeah yeah yeah yeah yeah
u/f8f82804

#outrun #ethereal
u/vain

holy cow! How is this possible? Incredible !!!

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pavel

function u(t) {

eval(unescape(escape`琿〺愽笱㈳㐲㨱紻楦⡦牡浥┳〽㴰☦晲慭攼㌰⨳㌩笠景爨挮睩摴桼㵢㵻紬焽㉥㐻椽焭ⴾ㸷㭸⹦楬汒散琨㄰⩩ⰱ〪樬㄰ⱡ孱崪㄰⤩景爨樽焥ㄲ㠬欽㤻欭ⴻ⥢孱嵞㵫ⴴ㽡嬨椫欥㌭ㄩ⨱㈸⭪⬨欯㍼〩ⴱ崺〻愽扽`.replace(/u(..)/g,"$1%")))

Dec 11 2018 8:27 AM UTC

}// 137/140

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Fredkin Replicator

u/pavel

Cellular automaton. A cell turns on if it has an odd number of on neighbors and turns off otherwise.
u/pavel

First 32 generations
u/pavel

(starting with one on cell in the middle)
u/lucio

Awesome Numberphile contribution :-)

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pavel

function u(t) {

for(c.width|=i=60,x.scale(5,5);i--;x.ellipse(192,20+o*160,o?60:80,o?30:15,0,a=(i>>1)*(o-.5)*.42+S(3*t)*.7,a+7))o=i+i/2&1
x.stroke()

Dec 11 2018 1:37 AM UTC

}// 131/140

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Twisted Cylinder #beesandbombs

u/pavel

Single stroke call and only ellipse to draw. The lines are canvas connecting the various ellipse draw cal into a single stroke, I just manage the start angles.
u/pavel

o determines which ellipse, 0 is top and 1 is bottom. It goes: top, bottom, bottom, top. Four-cycle to draw two vertical lines and reset. The angle increments every 2 so top and bottom angle is the same.
u/jylikangas

Thanks for writing about the tricks in your dweets.

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ellisk1

remix of d/11374 by u/ellisk1

function u(t) {

with(x)for(j=9;j--;stroke())beginPath(strokeStyle=`hsl(${t*j},90%,50%)`),arc(Y=540,Y,450,t+=a=1.57,b=t+a),arc(Y-99*S(t),Y+99*C(t),350,b,b+3)

Dec 10 2018 2:44 PM UTC

}// 140/140

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Twisting Ring v2

u/ellisk1

Hopefully this one works in safari
u/veubeke

It does :)

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katkip

function u(t) {

eval(unescape(escape`挮睩摴株㴱㭰㴨挬堩㴾筸⹦楬汓瑹汥㵣ⱸ⹢敧楮偡瑨⠩ⱸ⹥汬楰獥⠹㘰ⱘⰴ㤹ⰹ㤬〬〬㜩ⱸ⹦楬氨⥽㭰⠧⍦愰✬㤹㤩㭰⠧扬略✬㜹⤻砮晩汬却祬攽刨⤻砮晩汬剥捴⠸㐰ⰷ㤫⡴⩴⨹㤹⤥㜰〬㈵〬㈵〩;`.replace(/u(..)/g,"$1%")))

Dec 10 2018 2:31 PM UTC

}// 135/140

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I tried. #portal

u/Xen

YEA BOI!

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jylikangas

function u(t) {

with(x)for(fillRect(0,0,2e3,2e3),fillStyle="#ccc",shadowColor=R(i=9);i--;fillRect(512+i*99+X/4,400,50,200))X=shadowBlur=(1+S(i/2+t*4))*40

Dec 9 2018 5:18 PM UTC

}// 137/140

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Grey #default

u/lionleaf

That's amazing!
u/joeytwiddle

mmm milky
u/Koi

So satisfying
u/vain

very cool

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veubeke

function u(t) {

c.width^=0
x.font='6em"'
for(i=9;i--;x.fillRect(25,0,50,200))x.setTransform(1,0,0,-1,(5+i)*99,(600-(t>i&&t-i)**9)),t>i&&x.fillText('🔥',0,0)

Dec 9 2018 11:35 AM UTC

}// 139/140

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#default #rockets

u/jylikangas

Awesome! :D
u/katkip

#genius
u/Xen

Love it!
u/aleamb

Lol!
u/lucio

Now make the booster land back :-)

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pavel

remix of d/11280 by u/pavel

function u(t) {

for(c.width|=i=36;j=60*(--i>>2);x.fillRect(-j,0,2*j,u>0||9))x.setTransform(u=C(a=(i/2+t/8)*Math.PI),v=S(a),0,4,960+j*v,256+j/2-j*u)

Dec 5 2018 4:20 AM UTC

}// 131/140

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#pyramid v2

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pavel

function u(t) {

for(c.width|=i=23,x.globalAlpha=.1;j=99*(i-->>1);x.fillRect(-j,0,2*j,99))x.setTransform(u=-C(a=(i%2-t/3%1)*1.57),v=S(a),0,1,960+j*v,j/2-j*u)

Dec 4 2018 12:21 AM UTC

}// 140/140

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#pyramid

u/pavel

Messing around with setTransform

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