Dweets awesomed by u/jick

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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prawnwarp

function u(t) {

c.width|=0;for(i=0;i<1920;i+=64)for(j=0;j<1080;j+=64){h=3.14+3.14*C(i*0.1+t*(j-540)*0.01);x.beginPath();x.arc(i,j,32,h,h+3.14);x.stroke();}

May 3 2017 11:32 AM UTC

}// 139/140

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yonatan

remix of d/2667 by u/yonatan

function u(t) {

for(n=999;n--;)[i,j]=[[0,v=950],[v,0],[v*2,v]][3*Math.random()|0],x.fillStyle=R(S*.2,C*.2,S/C*99),x.fillRect(S=i+S>>1,C=j+C>>1,1,1)

May 3 2017 10:10 AM UTC

}// 131/140

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yonatan

remix of d/2641 by u/yonatan

function u(t) {

for(X=c.width=256;X-=2;)for(Y=148;Y-=2;x.fillStyle=`hsl(${A=(X*C(t)-Y**S(t))&(Y*C(t)+X**S(t))},${A=A*t%50+25}%,${A}%`)x.fillRect(X,Y,2,2)

Apr 28 2017 10:44 PM UTC

}// 137/140

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u/donbright

game changer
u/joeytwiddle

Wow! :D
u/yonatan

hmm, 15 FPS here and 30 on https://dweet.dwitter.net/id/2643?autoplay=1

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magna

remix of d/2370 by u/magna

function u(t) {

c.width|=0;for(i=9;i--;x.fillRect(400+i*100+C(t+i)*50+S(t)*300,400+S(t+i)*50,40*(p=1+S(t+i)/8),200*p));

Apr 28 2017 4:58 PM UTC

}// 103/140

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#default

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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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New_Core

function u(t) {

i=h=c.width|=0;d=~~(h-t%30*60);while(i--)x.fillRect(i,a=700+200*S(t+i/599)*S(t+i/-80),1,h),i==d?b=a:0;x.font=8+'cm a';x.fillText("⛴",d-99,b)

Apr 26 2017 8:04 PM UTC

}// 140/140

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u/magna

I don't see the boat. Chrome on macOS.
u/magna

Ah, I see it on Chrome on Windows though. Nice!!!
u/New_Core

font maybe to big for macOS, try change it to 5 cm or so, might work
u/magna

6 works on macOS
u/New_Core

#water
u/New_Core

#sea #ocean

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rileyjshaw

function u(t) {

r=540
p=6.283
x.strokeStyle=R(0,0,0,.02)
n=Math.random(x.stroke())*p
x.lineTo(960+C(n)*r,r+S(n)*r)
n<.1&&x.beginPath()

Apr 26 2017 6:33 PM UTC

}// 118/140

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u/joeytwiddle

That's no moon
u/rileyjshaw

@joeytwiddle 😂 try setting p=5.2
u/magna

@rileyshaw LOL
u/magna

* @rileyjshaw

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yonatan

remix of d/2580 by u/MrM@_S

function u(t) {

c.width|=0;for(i=Q=-960;i<-Q;i+=48)for(j=A=-540;j<-A;j+=48)s=S(i*j*(k=3e-4)*C(t+i*k+j*k))*24,x.fillRect(i-Q-s,j-A-s,s*=2,s)

Apr 26 2017 12:51 AM UTC

}// 123/140

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127 -> 123

u/donbright

really nice

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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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