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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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katkip

function u(t) {

for(i=-55;i++<53;)for(j=39;j--;)x.fillStyle=R(i<0?255+i*2:0,i<0?155+i*8:0,i<0?0:S(i*i+j/2+t*i/12)*i*5,.2),x.fillRect(j*50,i*10+540,50,50)

Dec 11 2019 9:24 PM UTC

}// 137/140

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ｓｕｎｗｅｎｔｄｏｗｎ#landscape #waves

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New_Core

remix of d/16823 by u/New_Core

function u(t) {

for(i=8;i--;x.fillStyle=R(t,t*2,t,1-t/150))j=i+1,t<1?x.fillRect(920,900,a=99,a):x.fillRect(960+j*50*S(t),a+j*a-t**C(t),9,9)

Dec 11 2019 8:23 AM UTC

}// 123/140

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slowly painting a green tree

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WasifBoomz

function u(t) {

c.width=1920
if(t==0)a=900
if(a<0)b=true
if(a>899)b=false
if(b)a+=10
if(!b)a-=10
x.font="100px t"
x.fillText("Fly",t*192,a);

Dec 10 2019 8:02 PM UTC

}// 124/140

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u/Xen

#super #house #dragon

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username

remix of d/16821 by u/username

function u(t) {

d=960;c.width=2*d;for(i=0;i<333;i++)x.fillStyle=R(i%300,i%255,i%320,.4),x.beginPath(),x.fill(x.arc(d+300*S(i+t),540+300*S(i)+T(t-i),19,0,7))

Dec 10 2019 6:31 PM UTC

}// 140/140

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What way does it even rotate? Changes all the time for me personally.

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katkip

remix of d/16828 by u/katkip

function u(t) {

for(c.width|=i=2e2;i--;)for(j=49;j--;)x.fillStyle=R(99-j*5*S((j&i)/8),95-(i^j),99-j*5),x.fillRect(i*10,-99+j*34-S(i/14+t)*100,10,34)

Dec 10 2019 2:01 PM UTC

}// 132/140

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katkip

function u(t) {

c.style.background=`#508`;for(c.width|=i=2e2;i--;)for(j=19;j--;)x.fillStyle=R(99-j*8,0,99-j*5),x.fillRect(i*10,540+j*34-S(i/9+t)*100,10,34)

Dec 10 2019 1:31 PM UTC

}// 139/140

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just looks good...

u/katkip

#sin
u/iverjo

#sine

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nntb

remix of d/16817 by u/Xen

function u(t) {

for(Z=i=32;i--;x.fill(x.rect(3*C(Y=Z*.2+i^Z-C(i*t)/Z),1/S(Y),Y*32,Y*17)),x.stroke())x.beginPath(x.fillStyle=`hsla(${t*i*.10*Z},99%,50%,.5)`)

Dec 10 2019 9:34 AM UTC

}// 140/140

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second remix...

u/Xen

wheres the blending tho? walk you thru another soon if thats King...

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KilledByAPixel

function u(t) {

with(x)for(c.width|=q=i=640,font='9em"',fillText('Dual Axis Rotation',400,170);i--;)beginPath(fill(arc(960+q*S(i*2),q+350*C(t+i*3),30,0,7)))

Dec 10 2019 4:50 AM UTC

}// 140/140

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I am in the top 10 Best Illusions of the Year! Help me win by voting at: http://illusionoftheyear.com/vote

u/katkip

i voted
u/katkip

it's a good find
u/metamero

wow! impressive. voted
u/metamero

#illusion #opticalillusion
u/KilledByAPixel

i won ;)

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BadassBison

function u(t) {

for(i=70;i>0;i--){
x.beginPath(x.fillStyle=`hsla(${t*i*2},99%,50%,.4)`)
x.arc(C(t/i)*1700+545,575,i*15,0,7);
x.fill()
}

Dec 9 2019 11:39 PM UTC

}// 120/140

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u/Odog8

Dyson lazer???

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New_Core

function u(t) {

for(i=9;i--;)t<15?x.fillRect(960+i*50*S(t),99+i*110-t**C(t)*9,9,9):x.fillRect(920,980,99,99)

Dec 9 2019 7:19 PM UTC

}// 92/140

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a tree without christmas decorations

u/DataMeta

#waitforit