Dweets awesomed by u/electric-skeptic

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: #Opposites

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mildlybean

function u(t) {

c.width|=t?onmousedown=e=>{X=e.x*3;Y=e.y*3}:C=U=0;x.fillRect(X,Y,99,99);X+=C;Y+=U;x.fill(x.arc(960,540,99,0,7));C+=(960-X)/99;U+=(540-Y)/99

Dec 19 2020 6:26 PM UTC

}// 139/140

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Click on the canvas to move the square. It keeps its velocity when it moves, which leads to some interesting orbits

u/Xen

very nicely done

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anotherkitten

function u(t) {

x.fillStyle="#daf1"
x.fillRect(0,0,2e3,2e3)
for(i=799|0;i--;)x.arc(960+S(t+i)*200,540+C(t+i)*200,300,I=t+i/14,I)
x.beginPath(x.stroke())

Dec 18 2020 6:03 PM UTC

}// 136/140

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u/Xen

smooth!

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danny@hille.dk

remix of d/21021 by u/pavel

function u(t) {

with(x)for(c.width|=i=300;i--;beginPath(fill(ellipse(40+19*C(a=++t%3.1),0,S(a),!rotate(i/6),a,0,7))))setTransform(9,0,0,9,960,540)

Dec 17 2020 5:54 PM UTC

}// 130/140

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gold and play

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pavel

remix of d/21012 by u/pavel

function u(t) {

with(x)for(c.width|=i=710;i--;beginPath(fill(ellipse(40+18*C(a=++t%3.1416),0,w=S(a),!rotate(i*49+w/3),a,0,7))))setTransform(9,0,0,9,960,540)

Dec 17 2020 3:03 AM UTC

}// 140/140

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Torus Study #2

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New_Core

function u(t) {

with(x)for(c.width|=i=9;i--;fill())beginPath(fillStyle=R(255-i*255,255-i*9)),arc(X=960+(80-i*9)*S(t+i/9),Y=i*40+99,50+i*50,1,2),lineTo(X,Y)

Dec 16 2020 7:01 PM UTC

}// 139/140

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this year the Christmas tree has a "star" but no decoration

u/pavel

-4 with(x)for(c.width|=i=9;i--;fill(arc(X,Y,50+i*50,1,2)))beginPath(fillStyle=R(255*!i,255-i*9)),moveTo(X=960+(80-i*9)*S(t+i/9),Y=i*40+99)
u/pavel

-1 255*!i -> !i<<7

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katkip

remix of d/21013 by u/Steckerleiste

function u(t) {

for(z=4*t,v=99*(C(z/4)+1),x.fillStyle=`${R(v,v,v)}`,j=0;j++<509;)i=j/7<<6,n=z/9+j%7*.9+i/250,x.fillRect(S(n)*i*t+960,C(n)*i*t+540,j/t,j/t)

Dec 16 2020 2:57 PM UTC

}// 138/140

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pavel

function u(t) {

with(x)for(fillRect(i=-710,i,i*=-2,i);i--;clearRect(20+9*S(a=i+t),2,w=C(a),w>0))setTransform(16,0,0,16,960,540),rotate(i/226)

Dec 15 2020 11:04 PM UTC

}// 125/140

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Torus Study #1

u/magna

WOW!
u/vovanmozg

fantastic!

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intrinsic

remix of d/19073 by u/intrinsic

function u(t) {

for(i=e=c.height|=0;i--;x.fillRect(e+C(i)*r,e/2+S(i)*r,6,6))r=e*C((i+t)*S(t/e))

Aug 21 2020 6:14 PM UTC

}// 79/140

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Particle loop golf

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taupelink

remix of d/19726 by u/taupelink

function u(t) {

for(i=1e3;i--;x.fillRect((X+(X&2?S:C)(500/Y))*30,(Y-2*S(X))*Y,T(X*Y)<0,.5))X=(r=Math.random)(Y=r()*33)*64,x.fillStyle=R(120-Y,120+X,192+X|Y)

Aug 18 2020 5:30 PM UTC

}// 140/140

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d/19728

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KilledByAPixel

function u(t) {

for(c.width|=ﾠ=ㅤ=+[[+!+[]]+[+[]]],x.scale(ﾠ,ﾠ);ㅤ;ㅤ--)
x.fillRect(S(t)*(ﾠ+ﾠ+ﾠ)+ﾠ*ㅤ+ﾠ+ﾠ+ﾠ+ﾠ,ﾠ+ﾠ+ﾠ+ﾠ,ﾠ/(ﾠ/ﾠ+ﾠ/ﾠ),ﾠ+ﾠ)

Aug 18 2020 5:01 PM UTC

}// 114/140

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No Numbers Default with Invisible Variables

Show more comments…
u/KilledByAPixel

Uses Hangul Fillers (U+FFA0 and U+3164) for the invisible variables
u/KilledByAPixel

+[[+!+[]]+[+[]]] == 10 from jsfuck https://github.com/aemkei/jsfuck
u/KilledByAPixel

#crypto
u/joeytwiddle

Good trick!
u/Xen

niiice!
u/DataMeta

cool!!
u/sigveseb

Very nice
u/KilledByAPixel

Thank you! #default
u/katkip

#obfuscated
u/aaaaaz

damn damn damn... wonder what is the space between the two = after for(c.width| if I replace it by a normal space it kills the dweet :|
u/danny@hille.dk

+(+!+[]+[+[]]) is a slightly less verbose way to write 10, withou using any digits
u/danny@hille.dk

for(c.width|=ﾠ=ㅤ=+(+!+[]+[+[]]) ,x.scale(ﾠ,ﾠ);--ㅤ; ) x.fillRect(S(t)*(ﾠ+ﾠ+ﾠ)+ﾠ*ㅤ+ﾠ+ﾠ+ﾠ+ﾠ,ﾠ+ﾠ+ﾠ+ﾠ,ﾠ/(ﾠ/ﾠ+ﾠ/ﾠ),ﾠ+ﾠ)
u/danny@hille.dk

or less obfuscated : for(c.width|=a=i=+(+!+[]+[+[]]),x.scale(a,a);--i; ) x.fillRect(S(t)*(a+a+a)+a*i+a+a+a+a,a+a+a+a,a/(a/a+a/a),a+a)
u/andrea270872

Wow... it took me a bit to get the idea... cool trick!

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