Dweets awesomed by u/farter

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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tomxor

function u(t) {

c.width=w=96
for(i=5e3;X=i%w,Y=i/w,i--;x.fillRect(X+2*Z,Y+4*Z,.6,1))Z=(.5+S(i/15+t*2)/2)*S(S(Y/8+t)+S(X/24+t)+t),Z=C(2*Z+S((X&Y)/(1+Z*Z))/8)

Mar 2 2019 7:46 PM UTC

}// 140/140

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Fractal Lake

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katkip

function u(t) {

// Transferring...








receiveMessage=pauseDemo=0;q="";l=q.length;for(i=616;i--;)q+=C(i+C(t+i/99)*10+t*29)<0?'0':'1'
throw q

Feb 28 2019 2:42 PM UTC

}// 128/140

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#binary #hax

u/rnbw

oh neat! i tried to do something like this once (never published it) but your execution is really good
u/Ath0r

cool!
u/joeytwiddle

#parallax
u/C010011012

throwing errors for animation? wow clever

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tomxor

function u(t) {

eval(unescape(escape`眽㤰Ⱪ㵬㵷⩷⼵ⱴ㴱⭴⩴⼱㈻景爨砮晩汬剥捴⠰ⰰⱣ⹷楤瑨㵷⨲ⱷ⨲⤻椭ⴻ砮晩汬剥捴⡘⨶ⱙ⨶ⰱ⭋ⰵ⤩堽椥眯㌬夽椯眬䘽琭椯氬䬽ㄭ䘥ㄬ䬪㴨奞堭繆⤯㈷┱⭋⨪㠬砮晩汬却祬攽恨獬⠤筩⨱㈰紬㤹┬⑻䬪㤹紥⥠`.replace(/u(..)/g,"$1%")))

Feb 14 2019 12:46 AM UTC

}// 140/140

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Trinitron #crt #scanline #fractal

u/tomxor

Finally resorted to UTF8. This is a reasonably accurate slow motion aperture grille scanline animation... Although if run very slow you will see it's not simulating 3 electron beams. t=fps (scanline) w=width (subpixels) the later must be a multiple of 3 and 5. Use X, Y and floored F to plugin your own fractal!
u/tomxor

Uncompressed: w=90,i=l=w*w/5,t=1+t*t/12; for(x.fillRect(0,0,c.width=w*2,w*2);i--;x.fillRect(X*6,Y*6,1+K,5)) X=i%w/3,Y=i/w|0,F=t-i/l,K=1-F%1,K*=(Y^X-~F)/27%1+K**8, x.fillStyle=hsl(${i*120},99%,${K*99}%)
u/sigveseb

Kick-ass!
u/C010011012

bypassing the character limit I see using unicode escapements and regex u r very clever

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keithclark

remix of d/11328 by u/keithclark

function u(t) {

for(x.fillRect(0,0,j=2e3,j);j--;x.clearRect(C(j)*r+960,S(j*j)*r+540,k=r>>8,k))r=900/(4-(t+j/13)%4)

Dec 7 2018 11:15 AM UTC

}// 98/140

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Golfed down to 98 bytes

Show more comments…
u/keithclark

Also fixes some glitches in the original
u/keithclark

swap ,k=r>>8,k for ,r>>=8,r to save a byte (97)
u/keithclark

also r=900/(4-(t+j/9)%4) => r=j/(4-(t+j/9)%4) (94)
u/iverjo

Very nice #starfield
u/keithclark

for(x.fillRect(0,0,j=2e3,j);j--;x.clearRect(C(j)*r+960,S(j*j)*r+540,r>>=8,r))r=j/(7-(t+j)%7) (92)
u/jylikangas

for(x.fillRect(0,0,j=2e3,j);j--;x.clearRect(C(j)*r+960,S(j*j)*r+540,r>>=8,r))r=j/(7-t++%7)(90)
u/keithclark

nice!
u/keithclark

for(x.fillRect(0,0,j=2e3,j);r=j--/(7-t++%7);)x.clearRect(C(j)*r+960,S(j*j)*r+540,r>>=8,r) (89)
u/jylikangas

Yes!
u/vain

very nice!
u/384.cz

#starfield

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jylikangas

function u(t) {

for(c.width=i=v='-1';i++<7;v+=1)x[f='fillText'](v+"x"+v+"="+v*v,155-i*9,30+i*9),x[f](8,X=99-i*6-C(i+t)*25,230-X-S(X)),x[f]('...◢◣.',i**4,64)

Oct 31 2018 3:00 PM UTC

}// 140/140

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Tourists visiting the Great Pyramid of Math

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u/anotherkitten

dang there is some clever stuff in here, nice
u/magna

How do you even...
u/magna

I mean seriously.
u/aleamb

amazing, fucking amazing
u/cantelope

i wish i could give this more than one awesome. great work!
u/jick

Wow!
u/lionleaf

#pyramid #pyramids #numbers #math <--- Need to be able to find this one again!
u/lionleaf

Amazing!
u/lionleaf

The people even bob up and down as they move
u/sigveseb

Fanfuckingtastic
u/magna

Shut down Dwitter. We're done here.
u/katkip

lovee itt
u/iverjo

#witchcraft
u/joeytwiddle

#landscape #scene
u/danny@hille.dk

I went to the Gizaplateauet onece, and I can comfirm it looked excactly like this :-)
u/vain

Very nice. The code and the usage of filltext seems to be real magic - i will try to check and understand the magic

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Xen

remix of d/10785 by u/alice-mx

function u(t) {

x.beginPath(q=t*91%1e3
);x.fillStyle=`hsl(${t*15%360},50%,50%)`;x.arc(C(q/6.2)*q+960,S(q/6.2)*(q)+560,2+q/25,0,7);x.fill();

Oct 31 2018 7:21 AM UTC

}// 124/140

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u/alice-mx

love the spacing on this, it's way more pleasing

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pavel

function u(t) {

for(c.width|=i=100;i--;)
for(j=50;j--;)
s=20*S((i|j)-t/2)**20,  // Then a miracle occurs
x.fillRect(10+20*i-s/2,10+20*j-s/2,s,s)

Oct 31 2018 3:37 AM UTC

}// 128/140

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#sierpinski

u/joeytwiddle

Transient overlapping Sierpinskis. Lovely.

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jylikangas

remix of d/7979 by u/jylikangas

function u(t) {

eval(unescape(escape`睩瑨⡸⥦潲⡣⹷楤瑨㵩㴭㔻⬫椼㔻䌽愽㹬楮敔漨⡘㵓⡴⤪㤩⬱㔰⭡⨵㤯⡺㵪⵴┱⤬㠰⬨吽㤹⭓⡪⭴♡⤪㌰⤯稭堪㈩⥦潲⡪㴷㭢敧楮偡瑨⡦楬氨⤩ⱃ⡩⤬ⴭ樻䌨椫ㄩⱪ⬫ⱃ⡩⬱⤬樭⴩晩汬却祬攽刨䌨椩ⱔ⼲⭪⨲〩`.replace(/u(..)/g,"$1%")))

Oct 29 2018 4:08 PM UTC

}// 140/140

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3D landscape with compressor's help

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u/lionleaf

#landscape
u/sigveseb

Niiiice
u/rbong

Incredible!
u/joeytwiddle

Reminds me of Zarch (1987)
u/f8f82804

#d3 #wireframe #perspective #shading
u/katkip

cool

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xem

remix of d/7471 by u/jylikangas

function u(t) {

A=r=>x.fill(x.arc(960+R*C(t),540+R*S(t),r,0,7))
f%2&&(t+=3)
x.beginPath(A(R=f%2?190:187))
x.fillStyle='#'+(f++%2?"fff":111)
A(50)}{f=0

Mar 26 2018 6:52 AM UTC

}// 134/140

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u/username

ah it is just shy from actual yin yang

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PietPtr

function u(t) {

c.width=700
for(i=0;i<390;i++){
x.fillStyle=`hsl(${S(t+i)*255},50%,50%)`
x.fillRect(i%30*30,Math.floor(i/30)*30,28,28)
}

Feb 7 2018 11:03 PM UTC

}// 120/140

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u/magna

Nice!
u/katkip

#disco

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