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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Ath0r

function u(t) {

c.width|=0
for(i=w=1920;i--;)x.fillRect(i,540+300*S(i*0.0065),2,2)
a=t*9
b=w/a
for(i=0;i<a;i++)x.fillRect(i*b,540,b,300*S((i+0.5)*b*0.0065))

Mar 11 2019 5:31 PM UTC

}// 140/140

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Sine integration #sine #integration #maths

u/Jezza

∫sin(x) from 0 to 2π = 0 :) :) :)

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andrea270872

function u(t) {

$=t*97%11*180
H=t*500%1080
x.fillStyle=R(t*10%255,$/4,$/2,.4)
x.setTransform(1,0,0,1,$,H),x.rotate(t/3)
x.fillRect(0,0,50,50)

Mar 9 2019 3:21 PM UTC

}// 125/140

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gradient crystal scales ver2 (shorter thanks to a great suggestion)

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rsrsrs

remix of d/12703 by u/rsrsrs

function u(t) {

for(c.width|=i=50,k=75;i--;x.rect(960-(i*k/2),540-(i*k/2),i*k,i*k))x.rotate(S(1+i*t/500));x.fill('evenodd')

Mar 9 2019 11:11 AM UTC

}// 107/140

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weird patterns; still have not figured out how to rotate the squares in place

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rsrsrs

remix of d/12699 by u/rsrsrs

function u(t) {

for(c.width=i=512;i-=1/8;x.fillRect(16*(X*2+Y+16),16*(X/2-Y+Z+9),6,9))X=i%8-4,Y=i/64-4,Z=S((X*X+Y*Y)/3+t),x.fillStyle=R(a=(Z+1)*+128,a,a)

Mar 9 2019 10:29 AM UTC

}// 137/140

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better gradient monochrome

u/rep_movsd

#underrated

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pavel

remix of d/12693 by u/danny@hille.dk

function u(t) {

for(i=c.width|=p=240;i--;e>0&&x.fillRect(q+i%5*500,i-p,e,20))q=S(a=3*S(t/2)+i*.3146)*p,e=C(a)*p-q,x.fillStyle=`hsl(${i*90},99%,${8*e**.3}%`

Mar 9 2019 3:54 AM UTC

}// 139/140

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u/katkip

This looks so much like a WebGL dweet but it isn't.
u/joeytwiddle

#twister

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rnbw

function u(t) {

c.width=700
x.fillStyle=`#d94`
for(i=-4;i++<53;)for(j=(i+S(t/3+i/3)*10-30);j++<13;)x.fillRect(i*30-30+S(t/3+j)*50,j*30,40,16)

Mar 8 2019 7:29 PM UTC

}// 125/140

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odd... stripes? can i CALL them that??

u/Xen

nicely done
u/katkip

So smooth! :D

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pavel

remix of d/1112 by u/sigveseb

function u(t) {

for(let w=c.width=127,i=9086,a,b,n,B;a=i&w,b=i--/w;x.fillRect(a,b,1,1/(t+a/n&1^b/n)))n=b-20,B=(w*S(t*9+n/9)+(a-40)**2+n*n)/1e3,n*=B>1||C(B)

Mar 7 2019 8:31 PM UTC

}// 139/140

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#improved performance

Show more comments…
u/pavel

Original runs at 6fps on my machines this runs at 60fps. I lowered the resolution by a quarter (4x perf) and golfed 13 chars to let me declare all vars locally (2x perf).
u/tomxor

wow! this is a massive perf improvement, the original was impressive but I couldn't really see it realtime. Nice one :)
u/katkip

how
u/nender

Wow! This is amazing!
u/sigveseb

Nice!
u/f8f82804

#raytrace #d3 #pbr
u/Cloud

Cool!!!

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pavel

function u(t) {

for(w=c.width=1e3,i=99;r=10*i--;i?x.stroke():x.fill())x.beginPath(p=(1+t/2-r/w)%2),x.ellipse(480,270+20*S(p*40)/9**p+!i*w*(p-2),r,r/3,0,0,7)

Mar 6 2019 7:01 AM UTC

}// 140/140

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#water #drop

u/katkip

Looks good
u/aleamb

great!
u/mcdxn

damn!

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qm3ster

remix of d/12641 by u/qm3ster

function u(t) {

t||(x.strokeStyle='#FF0')
x.filter=`hue-rotate(${t/=3}rad)`
r=540
x.beginPath()
while(r>0)x.lineTo(--r*S(t-=.01)+960,r*C(t)+540)
x.stroke()

Mar 5 2019 10:54 PM UTC

}// 139/140

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Debian. JK, it's a candy.

u/13thptr

Nice colors :o

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qm3ster

function u(t) {

t||(a=0)
r=0
x.fillStyle=`hsl(${a|0},100%,50%,.15)`
x.beginPath()
while(r/100<9-t){x.lineTo(S(a)*r+960,C(a)*r+540)
a+=.03
r+=9}x.fill()

Mar 5 2019 9:39 PM UTC

}// 136/140

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Deterministic flower thing; Mess with a and r increments.

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