Dweets awesomed by u/magna

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: #Food

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rodrigo.siqueira

remix of d/12959 by u/rodrigo.siqueira

function u(t) {

x.fillRect(0,0,2e3,2e3)
for(var i=4e3;i=i-1;){
X=S(i)+S(K=i*.88)/2+2*S(F=2*i+t)
Y=C(i)+C(K)/2-2*C(F)
x.clearRect(960+X*130,550+Y*130,6,6)
}

Apr 6 2019 2:00 AM UTC

}// 139/140

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The Trefoil Knot. Created using a parametric equation from knot theory.

u/Qwitter

I like how the projected crossings allow you to view the height ambiguously: then, I can see this knot as not being knotted at whim.

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username

remix of d/13027 by u/username

function u(t) {

t*=256
for(i=3e3;i--;x.fillStyle=`hsl(${t*42},99%,50%`)K=(i&2)-t*t/i,X=S(i)+S(i)*K/t*9,Y=C(i)-C(i)*K/t*9,x.fillRect(960+X*150,640+Y*150,8,8)

Apr 5 2019 10:59 AM UTC

}// 140/140

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u/geb

#background

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vinca

function u(t) {

eval(unescape(escape`景爨椠楮⁴籼⡣⹷楤瑨㵦㴹㤬砮景湴㴧㜰灸∧ⱡ㴰⤬砮晩汬呥硴⠢屵笱䘶㌱索ⰰⰷ〩Ɒ㵸⹧整䥭慧敄慴愨〬〬昬昩ⱡ㵮敷⁄慴攥㈵㔬搽瀮摡瑡⥩┴㴽愥㐦☨摛楝㵡⤻砮灵瑉浡来䑡瑡⡰ⰰⰰ⭡┹⤻`.replace(/u(..)/g,"$1%")))

Apr 5 2019 9:03 AM UTC

}// 133/140

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u/Xen

Yes!!!!
u/magna

Xen is having a hard time remixing this because it is already perfectly pyshedelic as it is.
u/magna

*psychedelic
u/vinca

for(i in t||(c.width=f=99,x.font='70px"',a=0),x.fillText("\u{1F631}",0,70),p=x.getImageData(0,0,f,f),a=new Date%255,d=p.data)i%4==a%4&&(d[i]=a);x.putImageData(p,0,0+a%9)

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Xen

remix of d/12992 by u/katkip

function u(t) {

x.fillRect(0,t*t,2e3,1)

Apr 4 2019 5:59 PM UTC

}// 23/140

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23b #moire

u/metamero

22B d/12996 and 21B d/12998
u/metamero

another 22B version x.fillRect(t,t*=t,t,1)

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katkip

function u(t) {

f=t*t;x.lineWidth=Math.E*Math.PI*1.337;q=2;x.lineTo(960+S(f+C(f*q))*800,540-C(f+S(f*q))*500,5,5);x.stroke()

Apr 4 2019 1:18 PM UTC

}// 107/140

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**pd** ambigram

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rodrigo.siqueira

remix of d/12968 by u/rodrigo.siqueira

function u(t) {

c.width+=0
for(var i=1e3;i=i-.25;){
var K=(i&2)-S(t)
var X=K*S(i)/2+S(40*i+t)
var Y=C(i)/2-C(40*i-t)*K
x.fillRect(960+X*180,520+Y*180,4,3)
}

Apr 4 2019 12:12 PM UTC

}// 140/140

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Two dancing torus. "var" is not needed, but performance (fps) is better with them.

u/username

But if you do not specify anything, it will be a var anyway?
u/yonatan

It'll be global, which means it can be accessed outside of the u() function, which kills some compiler optimizations

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username

remix of d/12959 by u/rodrigo.siqueira

function u(t) {

c.width+=0
t*=9
for(i=3e3;i--;){
 K=(i&2)-2*t*t/i
 X=S(i)*2+S(2*i)*K/(t/9)
 Y=C(i)*2-C(2*i)*K/(t/9)
 x.fillRect(960+X*150,640+Y*150,8,8)
}

Apr 4 2019 8:28 AM UTC

}// 138/140

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robbyg

function u(t) {

for(X=2e3,Y=t*60,A=.1;X--;)C(V=Y*A)-S(H=X*A)>C(H)*S(V)&&x.fillRect(X,Y,1,1)

Apr 3 2019 5:35 PM UTC

}// 75/140

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A pretty weave #pattern

u/katkip

Huh nice

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vinca

function u(t) {

for(c.width=150,i=11250;i--;)x.fillRect(X=i/75,Y=i%75,1,S((X|Y|t)*t*.1))

Apr 3 2019 12:04 PM UTC

}// 72/140

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u/andrea270872

S and | together... wow. I cannot see what that is as a math function, but the effect is amazing
u/katkip

metal
u/joeytwiddle

#shiny

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katkip

function u(t) {

c.width^=0;G=_=>{z=1;for(j=9;j--;)z+=S(_*C(_)/9999)*z;return z}
t||(f=0)
for(i=337;i--;)s=250+G(f),x.fillRect(960+s*C(f),540+s*S(f),5,5),f++

Apr 3 2019 11:57 AM UTC

}// 140/140

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Eruptions

u/katkip

Looks like a bass boosted polar frequency spectrum on a hardcore song

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