Dweets awesomed by u/mxfh

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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magna

remix of d/2648 by u/New_Core

function u(t) {

for(x.fillRect(x.globalAlpha=0.05,0,i=w=2e3,w);i-=4;)s=99/((i+t*99)%w-w),x.clearRect(w*S(i*99)*s+1e3,w*C(i)*s+500,s*9,s*9)

May 2 2017 3:57 AM UTC

}// 122/140

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u/MrM@_S

you missed the 0.05, it can be a .05
u/magna

Gah! I was playing around with numbers and left it there I guess :)
u/iverjo

#stars #starfield

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saschavoid

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/99)%9),x.beginPath(),j=i*64+S(i/1e4+t),x.lineWidth=s*s,x.arc(960,540,s*49,j,j+.6),x.stroke()

Apr 28 2017 9:22 PM UTC

}// 136/140

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Do not dwell on it if drunk.

u/iverjo

#tunnel

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saschavoid

remix of d/2585 by u/vvarr

function u(t) {

i=q=c.width=2e3
for(;i--;x.fillRect(o*C(a)*z+q/2,(r*T(b)+190)*z,z*=z/2,z))z=q/((o=2e2+(r=30+C(6*S(a=i/310-t)))*T(b=i%40/8))*S(a+=1.4*t)+710)

Apr 28 2017 11:46 AM UTC

}// 140/140

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All pray to the ondulating cone.

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magna

remix of d/2604 by u/magna

function u(t) {

for(i=c.width=w=192;i--;)for(j=w;j--;!!('ưưƠƀÃÇÏÏ'.charCodeAt(j&7^f*7)-w&1<<(i%8^(X+Y&1)*7))^f&&x.fillRect(i,j,1,1))X=i>>3,Y=j>>3,f=t*X/Y&1

Apr 26 2017 10:17 PM UTC

}// 139/140

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Filled truchet tiles, now animated thanks to shaving by @donbright

u/donbright

the thing that strikes me is the black and white balls never move, only their connections.... but it looks like the whole plane is aliv
u/magna

@donbright To achieve that: Starting with a single tile, every other tile is flipped on the X axis. And then to flip a tile, I need to both invert the tile's pixels and also to flip it on the Y axis. Lots of XOR was needed :)
u/sigveseb

Excellent
u/iverjo

#dots
u/magna

#truchet

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vvarr

function u(t) {

i=q=c.width=2e3
for(;i--;x.fillRect(o*C(a)*z+q/2,(r*S(b)+190)*z,z*=z/2,z))z=q/((o=2e2+(r=25+9*C(6*S(a=i/310-t)))*C(b=i%50/8))*S(a+=2*t)+710)

Apr 26 2017 12:06 AM UTC

}// 140/140

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u/donbright

wwooooahhh!!!
u/rileyjshaw

for(i=q=c.width|=0;i--;... can save a few bytes :)
u/Kalanchoe

oh wow! this is mind-blowing
u/sigveseb

Very cool stuff
u/vvarr

Thanks a lot guys, my first dweet! ^^

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p01

function u(t) {

for(i=c.width|=0;i--;x.fillRect(i%98*J,J*(9-C(i/4-t)),9,9))J=2e4/i

Apr 24 2017 8:51 PM UTC

}// 66/140

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OCEAN66 - A demake of #2554 by @Cantelope

u/Xen

#2894 - 64bytes

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keithclark

remix of d/2561 by u/keithclark

function u(t) {

for(a=c.width|=l=C(t),m=S(t);a--;x.fillRect((d*l-S(a)*m)*h+960,(g*l-f*m)*h+520,h/=65,h))d=S(a*(f=C(a*a))),g=d*m+S(a)*l,h=800/(3+g*m+f*l)

Apr 23 2017 6:19 PM UTC

}// 136/140

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3 bytes smaller

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nystrand

remix of d/1968 by u/nystrand

function u(t) {

for(l=c.width|=a=C(t),b=S(t);l--;x.fillText(i*z^39,(k-a*i-b*a*j)*z+899,(i+b*j+a*k)*z+500))i=a*S(l),k=3+C(l),j=S(p=l/79)*k,k*=C(p),z=99-a*j*9

Apr 23 2017 5:49 PM UTC

}// 140/140

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u/donbright

best dwitter torus?
u/sigveseb

nice!
u/keithclark

Why not use x.fillRect((k-a*i-b*a*j)*z+899,(i+b*j+a*k)*z+500,6,6)? it renders faster and is smaller
u/mxfh

Print and connect the dots. Or do it on screen for lasting impact.

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hscells

function u(t) {

w=c.width=1920;s=32
for(i=0;i<w+s;i+=s)for(j=0;j<1080+s;j+=s)x.fillStyle=`hsla(${i+j},99%,50%,1`,x.fillRect(i-s+s*S(t+i),j-s+s*S(t+j),64,64)

Apr 23 2017 2:45 AM UTC

}// 140/140

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cantelope

remix of d/2554 by u/cantelope

function u(t) {

w=960,v=340,x.fillRect(0,0,w*2,v*4)
for(i=99;i--;)for(j=59;j--;)X=i/2-25-C(t),Y=2+S(i/5)*S(j/5+t*3),x.clearRect(w+1/j*X*w,v+Y/j*w,s=99/j,s)

Apr 22 2017 6:43 PM UTC

}// 139/140

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