Dweets awesomed by u/richev

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: #Opposites

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cantelope

remix of d/10984 by u/New_Core

function u(t) {

for(w=960,x.fillRect(0,0,i=2e3,i);i--;x.clearRect(w+(4-(i/9+C(t/4)*24)%8)/Z*w,540+(3-i*i/w%6)/Z*w,s=2+99/Z/Z,s))Z=7.5-(i*i*i/w+S(t/4)*24)%6

Nov 16 2018 12:01 AM UTC

}// 139/140

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not really a remix, but inspired by the concept.

u/iverjo

#starfield

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robbyg

remix of d/10978 by u/and3k5

function u(t) {

r=i=>Math.random()*i
for(i=z=2e3;i--;x.fillStyle=i?R(c=r(255),c,c):'#fff')x.fillRect(r(z),r(z),9,9)
x.font='9cm a'
x.fillText('HBO',600,670)

Nov 15 2018 10:46 PM UTC

}// 140/140

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Less color, more reading.

u/joeytwiddle

"bwoing csshhhhhh"
u/sigveseb

Nice one
u/magna

lol

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anotherkitten

function u(t) {

for(i=0;i++<54;x.fillStyle=`hsl(${i*7} 50% ${50-30*C(t/5)}%`)x.fillRect(0,i*20,T(i+t),20);x.drawImage(c,2,0,1924,1080);

Nov 15 2018 4:06 AM UTC

}// 119/140

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simple

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jylikangas

function u(t) {

for(c.width|=t%=i=6;i--;(A=a=>x.beginPath(x.fill(x.arc(i*365+(k?T=t%1:t>i)*200,700-S(1/T)*5,85,a,a+3))))(a=k*t*3.2+i-t/6),A(a+3.14))k=~~t==i

Nov 14 2018 9:27 PM UTC

}// 140/140

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Rolling physics

Show more comments…
u/joeytwiddle

Great effect
u/sigveseb

The camera shake is pretty sweet
u/iverjo

You keep impressing me
u/DataMeta

Quite clever
u/statenlogic

+1 for usingd an optical illusion for some of the movement
u/13thptr

#physics #bounce

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rodrigo.siqueira

remix of d/1231 by u/iverjo

function u(t) {

c.width^=0;for(i=9;i<2e3;i+=2)s=3/(9.1-(t+i/9)%9),x.beginPath(),j=i*7+S(i*4+t+S(t)),x.lineWidth=s*s,x.arc(960,540,s*49,j,j+.01),x.stroke()

Nov 14 2018 6:52 PM UTC

}// 138/140

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Warp drive hyperspace jump

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jylikangas

function u(t) {

c.width=63
for(i=2048;i--;x.fillRect(C=i%64,T=i>>6,s>0,s))for(s=b=3;b--;s-=1/(X*X+Y*Y))X=S(a=t+b)*2+4-C/8,Y=2+S(a*5)-T/9
x.fillText(u,15,15)

Nov 14 2018 5:46 PM UTC

}// 140/140

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Functional metaballs

u/joeytwiddle

#metaballs

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anotherkitten

function u(t) {

t=S(t)*1.7;for(c.width|=j=0;j++<9;)for(h=5;h-->-4;)for(i=5;i-->-4;x.fillRect(958+h*m*t-j*4,538+i*m*t-j*4,m+4,m+4))m=8*j,x.fillStyle=R(m,m*2)

Nov 13 2018 4:10 AM UTC

}// 140/140

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diced

u/aleamb

amazing!
u/joeytwiddle

Nice! Small tweak, just swinging left and right: for(c.width|=j=0;j++<9;)for(h=5;h-->-4;)for(i=5;i-->-4;x.fillRect(958+h*m*2-j*4+m*9*S(t),538+i*m*2-j*4,m+9,m+9))m=8*j,x.fillStyle=R(m,m*2)

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pavel

function u(t) {

with(x)for(k=n=j=255;j--;k=2,fill())for(beginPath(fillStyle=R(T=(t^k)%2*128,T,i=4));i--;)arc((j%9-t%1)*n+T,(j>>4)*n+T,64*k,a=(i-t%1)*11/7,a)

Nov 13 2018 2:29 AM UTC

}// 140/140

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u/yonatan

arc?!
u/anotherkitten

oh you sly dog very well done
u/pavel

:)
u/jylikangas

Very cool! You can save 3 bytes by removing the unnecessary %1 from t when calculating a and also doing <<7 instead of *128. If someone is wondering how this works using a+1 instead of a at the end may help. :)
u/katkip

#beesandbombs
u/pavel

Removing %1 at the end breaks the animation on my iPhone.

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pavel

remix of d/10939 by u/veubeke

function u(t) {

for(c.width=2*(n=i=300);--i;x.fill(new Path2D('M0 2C8-5,8 8,0 0')))z=4/(2+C(A=t*i/n+i*i)),x.setTransform(C(A)*z,0,0,z,S(A)*99*z+n,i*i%n+9*z)

Nov 12 2018 1:04 AM UTC

}// 140/140

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u/iverjo

#fish

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veubeke

remix of d/10932 by u/veubeke

function u(t) {

for(c.width|=i=128;i--;x.fillText('🐟',0,0))$=1-i%2*2,x.setTransform($*(_=5+i%5),0,0,_,2000-(i*19+$*t)*i%2080,i*i%1080)

Nov 11 2018 12:13 AM UTC

}// 118/140

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u/f8f82804

#emoji
u/Xen

are they all baby sharks?
u/joeytwiddle

If so, you'd better count your fingers!
u/joeytwiddle

Save the whales :-/ https://twitter.com/RT_com/status/1060321001…

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