Dweets awesomed by u/iverjo

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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yokljo

function u(t) {

x[f="fillStyle"]=R(0,0,0,.04)
for(m=42,i=-1,x.fillRect(0,0,n=1e4,n),x.font="50px A";i<m;x[f]="#0F0")x.fillText((t+f)[3],i*49,m*m*S(m*t+i++))

Jul 27 2017 5:48 PM UTC

}// 140/140

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Try different values of m, like 53.

u/Xen

matrix? got my vote :D
u/sigveseb

very clean matrix effect

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Rybar

function u(t) {

for(i=c.width^=0;--i;x.fillRect(960+500*S(t-o)*C(i/3),800*C(i/900)+300*C(t-o),9,9))o=i/300

Jul 27 2017 2:42 PM UTC

}// 90/140

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golfed by xem, p01, keithclark

u/lionleaf

Really cool!

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Rybar

function u(t) {

c.width=2e3;
  for(i = 0; i < 2e3; i++){
    o = 0.00314 * i,x.fillRect((960 + S(t-o)*500*C(i/3) ), 800*C(i/900) + C(t-o)*300, 10,10 )}

Jul 27 2017 2:02 PM UTC

}// 135/140

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cantelope

remix of d/2309 by u/cantelope

function u(t) {

x.fillRect(0,0,i=2e3,2e3);for(g=i/2;i--;x.clearRect(960+l*S(t)*g/Z,540+C(p)*i/Z*g,s=2e8/Z/Z,s))l=S(p=i*2.1+t*(i<1e3?-1:1))*i,Z=g*4.5-l*C(t)

Jul 27 2017 6:43 AM UTC

}// 139/140

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u/sigveseb

kewl
u/iverjo

stylish

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Rybar

function u(t) {

c.width=1920;
for(i=0;i<300;i++){
x.fillRect(i*10.1+S(i*t/10)*100, 340+S(i*t/15)*200, 10, 400)
}

Jul 25 2017 5:13 PM UTC

}// 96/140

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u/Xen

first word that entered the cranium was 'YES!', thats awesome.
u/Xen

first word that entered the cranium was 'YES!', thats awesome.
u/Xen

remix #2942

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Xen

remix of d/2012 by u/kchplr

function u(t) {

for(X=i=8;i--;r=T*2,x.fillText(i,960+S(T%7)*(r+=C(T*7)*t),540+C(T%7)*r))T=t*i

Jul 25 2017 4:13 PM UTC

}// 77/140

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u/cantelope

X= seems to be unused?
u/Xen

well spotted :-)

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kchplr

remix of d/2842 by u/alien

function u(t) {

c.width=120
for(j=0;j<68;j++)
for(i=0;i<120;i++){
q=(i*i*j*j*8+frame*8)&768
s=100*C(q)%255
s<0&&x.fillRect(i,j,1,1)}

Jul 24 2017 9:36 PM UTC

}// 117/140

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u/alien

:D!!!
u/Xen

95bytes for you: c.width=123;for(j=70;j--;)for(i=130;i--;s=C(q=(i*i*j*j*8+frame*9)&768)<0&&x.fillRect(i,j,1,1));
u/Xen

95bytes for you: c.width=123;for(j=70;j--;)for(i=130;i--;s=C(q=(i*i*j*j*8+frame*9)&768)<0&&x.fillRect(i,j,1,1));
u/kchplr

81bytes for me :p : for(c.width=i=130;i--;)for(j=70;j--;)x.fillRect(i,j,1,C(i*i*j*j*8+frame*8&768)<0)

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Xen

remix of d/1105 by u/fson

function u(t) {

x.strokeStyle=R(r=T(t*5)*(N=450),r/.22,N*r*.22);x.arc(N+N,N,(S(t)+1)*N,0,6);x.stroke();x.drawImage(c,T(t),C(t))

Jul 24 2017 12:18 AM UTC

}// 111/140

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u/sigveseb

This is cool!
u/Xen

Thank you. :-)
u/p01

MASSIVE
u/Xen

wicked,, wicked,, jungle is..

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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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