Dweets awesomed by u/nystrand

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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p01

remix of d/2961 by u/p01

function u(t) {

for(X=c.width=240;X--;x.fillRect(X,D*3,1-D/8,99-D*6))for(D=0;'.'<(u+1)[t*2+D*C(T=X/240-.5-C(t)/4)&7|(3.5+D*S(T))<<3]&&D<8;)D+=.1

Jul 29 2017 7:12 PM UTC

}// 128/140

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Homage to WOLFENSTEIN 3D in 128 bytes

u/p01

This is pretty much a port of WOLFENSTEINY - http://www.p01.org/wolfensteiny/
u/iverjo

Impressive!
u/iverjo

#wolfenstein

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nystrand

function u(t) {

for(c.width|=x[i=frame]=300,d=t?-d:1;i--;i%6||x.lineTo(T+1e3,S+540))S=T,T=x[i]+=d*x[e=i+(i+d)%3-i%3]/123*((e+d+(t&65|t/13.3))%3);x.stroke()

Jul 23 2017 1:10 AM UTC

}// 139/140

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RotatingSpherePatternPrinter

u/alien

wait what is going on here D: , could explain this x[i=frame] and T=x[i] plz
u/alien

How can you add T a numer, isn't T a defined function?
u/iverjo

frame is a number that starts at 0 and increases by 1 for each frame (this is actually a somewhat "hidden" feature in dwitter, and can be used as an alternative to t). T is initially a defined function (by dwitter), but the code in this dweet sets T to something else before a number is added to it. x[i=frame]=300 has the same result as i=frame,x[i]=300 because i=frame returns the new value of i
u/alien

D:!!!! @iverjo thxs
u/13thptr

#d3 #sphere

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p01

function u(t) {

for(x.drawImage(c,C(t)-9,4,i=1940,1090);i--;x.fillRect(i,0,1,4))x.fillStyle=R(T(i+t),T(i)*9,T(t))

Jul 21 2017 8:50 PM UTC

}// 97/140

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NIGHT-TRIP

u/iverjo

Looks nice in fullscreen

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Xen

remix of d/739 by u/donbright

function u(t) {

for(i=c.width=999;i--;x.lineTo(496+S(t*i)*i,285+C(t*i)*i));x.stroke()

Jul 19 2017 7:31 PM UTC

}// 69/140

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u/lionleaf

trippy
u/Xen

can almost fall into it, dont lean too much...
u/Xen

also, scroll down to pause and look at frames.

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James

function u(t) {

for(i=441;i--;)if(!+("肂胺ꗲ阴ꑚꢑ겢뺮ﰂ퐇ﱟ쌥쐐얄镯쿵즀둂뺅貋鯺雝뀟걯肽^".charCodeAt(i/15).toString(2).substr(1)[i%15]))x.fillRect(i%21*44,~~(i/21)*44,44,44)

Jul 18 2017 9:31 PM UTC

}// 137/140

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u/sigveseb

Nice! Is it a valid QR code?
u/stiaje

I scanned it! Goes to x.com ;)
u/stiaje

*spoiler alert*

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New_Core

remix of d/2828 by u/New_Core

function u(t) {

for(i=602;i--;x.fillStyle=`hsla(${i+99*S(f+S(i/f))},99%,50%,.05`)i<217?x.fillRect(0,5*i,2e3,5,f=t):x.fillRect(5*i-1085,0,5,1080,f=t*.5)

Jul 6 2017 8:18 PM UTC

}// 135/140

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u/joeytwiddle

Very pretty!
u/alien

nice !
u/New_Core

#colorshock

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nystrand

function u(t) {

with(x)for(q=t?5e3:translate(1e3,b=540),i=b*t%q;i>0;fillRect(c=i/5-q/2,c,T(t&i/t^b)*b+q,q),q=.2)fillStyle=R(a=i--/9-q,rotate(b*t&i),a+b,.1)

May 25 2017 10:00 PM UTC

}// 139/140

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u/magna

Super cool!
u/lionleaf

Amazing!
u/MrM@_S

disco

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joeytwiddle

remix of d/2737 by u/nystrand

function u(t) {

c.width|=p=(S,D=20,X=2*S,Y=X,k=_=>p(S*.79,D-1,X+2*S*r()-S,Y-S*r()/2))=>D&&x.fillRect(X,Y,S,S,k(k(x.globalAlpha=.01)));t?p(500):r=Math.random

May 24 2017 5:26 AM UTC

}// 140/140

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Rain cloud slideshow

u/joeytwiddle

Thanks to golfing tricks from nystrand, I could create a gallery
u/iverjo

Neat!
u/hollo47

This is some next level shit, I don't even know where it starts!
u/joeytwiddle

We can save 7 chars by removing D entirely and using S>7
u/joeytwiddle

#clouds #heavy Set D=18 for faster rendering

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magna

remix of d/2757 by u/magna

function u(t) {

x.globalCompositeOperation='xor';s=2**.5;H=500;r=Math.random;d=r()*H;w=H-d;x.beginPath();x.arc(C(a=r()*7)*d+H*2,S(a)*d+H,w,0,7);x.fill()

May 22 2017 12:39 AM UTC

}// 136/140

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New_Core

function u(t) {

t?c.width|=0:d=a=1;a<0?a=0:a-=.1;d<5?a=20:0;x.ellipse(960,840-(d=Math.abs(500*S(t))),a*S(t*9)+200,a*C(t*9)+200,0,0,7);x.fill();

May 21 2017 3:45 PM UTC

}// 127/140

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not that exciting, would been nicer if it went bouncing on the walls also ;)

Show more comments…
u/donbright

maybe something like this?: t?c.width=199:(ẏ=a=ẋ=1,y=X=12);y+=ẏ+=.12;ẏ*=y>99?a=-1:1;X+=ẋ*=X>179|X<12?-1:1;a*=.98;x.ellipse(X,y,4*a*C(ẏ)+9,4*a*S(ẏ)+9,0,0,7);x.fill()
u/New_Core

was thinking like this (but this is to long) t?c.width|=0:e=f=d=a=1;a<0?a=0:a-=.2;d<5?a=20:0;b>1700?(f-=5,a=20):0;b<200?(f+=5,a=20):0;e+=f;x.ellipse(b=960+e,840-(d=Math.abs(500*S(t))),a*S(t*9)+200,a*C(t*9)+200,0,0,7);x.fill();
u/New_Core

(noticed b was not defined.. put b= infront e in start)
u/joeytwiddle

A lot of chars for a little change: t?c.width|=0:d=a=y=F=T=0;l=t-T+.087;y+=9*a;a-=.01;y<-28?(F||(F=T=t),l=.087+(t-T)/2,y=-28,b=40,l>.43?(a=1,y=28,F=0,T+=(t-T)/2):u):b=20*a+20;h=-b*S(l*9);x.ellipse(960,840-y-(y>0?0:h),200+b*S(l*9),200+h,0,0,7);x.fill()
u/donbright

lol @joeytwiddle it looks like it's sentient doing jumping jacks
u/joeytwiddle

#bounce
u/joeytwiddle

20 months later, I got it bouncing off the walls, but not wobbling, in the remix

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