Dweets awesomed by u/pavel

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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vinca

remix of d/12933 by u/vinca

function u(t) {

for(i=2e3,t*=100;i--;)x.fillRect((b=i%2)?t|i:t,b?t:i%3?t|i:t^i*3,1,1)

Mar 31 2019 12:54 PM UTC

}// 70/140

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#sierpinski

u/C010011012

using bitwise xor to create sierpinski patterns i see

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vinca

function u(t) {

for(i=2e3,t*=100;i--;)x.fillRect(i%2?t|i:t^i*5,t,1,1)

Mar 30 2019 8:13 AM UTC

}// 53/140

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robbyg

remix of d/12870 by u/vinca

function u(t) {

c.width|=0,Z=16
for(Y=V=34,A=.2;V>-Y;V--)for(H=X=60;H>-X;H--)T(A*H)*T(A*V)>S(A*H*A*V*S(t))&&x.fillRect(H*Z+X*Z,V*Z+Y*Z,Z,Z)

Mar 28 2019 3:00 AM UTC

}// 123/140

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u/katkip

Wow

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New_Core

function u(t) {

for(c.width|=i=12;i--;x.fillText('🚮',960-300*S(a=(S(t+j/2)+9%v)%v+i%2*v)/2+120*C(a),j*254+99*S(t),300*S(a)))j=~~(i/2),x.font="6cm'",v=1.58

Mar 27 2019 9:22 PM UTC

}// 138/140

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u/prplz

~~(i/2) can be i>>1
u/jylikangas

Clever use of maxWidth!
u/katkip

Wow
u/user0

n

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Jezza

function u(t) {

c.width=80;with(Math)for(Y=45;Y--;)for(X=80;X--;)x.fillStyle=`hsl(${(atan2(C(X/PI),S(Y/PI))/PI+t/4)*180},99%,50%)`,x.fillRect(X,Y,1,1)

Mar 27 2019 3:45 AM UTC

}// 134/140

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Just messing around

u/Xen

Nice!

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jviide

function u(t) {

c.width=384
for(k=i=0;i<4752;i++)j=i%22,u=60*C(j/1.74+2*t+S(i/900)),x.fillStyle=j%2?"#00d":"#0f8",k>u&&x.fillRect(192+u,i/22,k-u,1),k=u

Mar 26 2019 8:24 PM UTC

}// 136/140

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Embossed spinner

u/DataMeta

Great first dweet! Welcome
u/aleamb

yeah, amazing!
u/lionleaf

That's a #twister with a really great #texture
u/Xen

love it
u/durian-favored-monster

nice

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Jezza

function u(t) {

with(Math){Y=frame;for(X=1920;A=X/99,B=Y/99,X--;)if((Z=atan2(C(A),S(B))/PI)*32&1)x.fillStyle=`hsl(${Z*180},99%,50%)`,x.fillRect(X,Y,1,1)}

Mar 26 2019 8:10 AM UTC

}// 137/140

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#atan2

u/donbright

#slowburn

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marc8

remix of d/12844 by u/marc8

function u(t) {

c.width|=p=-.5
g=(a,b)=>{for(i=6.28;i>0;){z=S(b*t+i*20+a/340)
x.arc(a,550,999+90*(z>p?z>1+p?1+p:z:p),i-=.01,i)}}
g(0,-6)
x.fill(g(2e3,6))

Mar 24 2019 5:23 PM UTC

}// 137/140

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Better shaped gears thanks to your suggestions

u/katkip

Awesome! even if I don't understand anything of the code
u/katkip

#gear
u/Qwitter

Mesmerizing

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vinca

function u(t) {

for(0==t&&(c.width=960,x.translate(480,270),A=.03),X=480,Y=(0|50*t)%540-270;X>=-480;--X)T(A*X)*T(A*Y)>S(A*A*X*Y)&&x.fillRect(X,Y,1,1)

Mar 24 2019 8:00 AM UTC

}// 133/140

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Show more comments…
u/katkip

This is #beautiful! How did you discover this?
u/Xen

Love it!
u/magna

WOW!
u/aleamb

dude!
u/vinca

I found a formula using this tool https://imgur.com/GKPVSJd
u/aleamb

#math #inecuation
u/robbyg

Awesome stuff, and thanks for sharing the tool! 111 bytes (but with no slow reveal): if(!t)for(Y=V=270,A=.03;V>-Y;V--)for(H=X=480;H>-X;H--)T(A*H)*T(A*V)>S(A*A*H*V)&&x.fillRect(H*2+X*2,V*2+Y*2,2,2)

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pavel

remix of d/12841 by u/andrea270872

function u(t) {

for(k=c.width|=0,x.scale(s=9+C(t),s);k--;)x.fillText([...'🏡🏠⛲🌊🌳🌳🌲 '][k**2.9&7],(k%40-9+9*C(t/2))*9,(k/40-9+9*S(t/3))*9)

Mar 20 2019 7:36 PM UTC

}// 119/140

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Sim city

u/katkip

looks like a tsunami flood city to mo lmao

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