Dweets awesomed by u/VT

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: #ScaryMovies

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remix of d/18345 by u/cantelope

function u(t) {

for(x[g='fillStyle']='#0001',x[f='fillRect'](0,0,w=i=1920,i);i--;x[f](b%w,(b/w|0)%1080,9,9))x[g]=`hsl(${b=(i+w+t/99)**2.3} 99%70%`

Apr 21 2020 8:11 PM UTC

}// 130/140

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more pastel

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Xen

function u(t) {

t?x.transform(z=C(3),Z=S(3),-Z,z,0,!x.fillRect(0,0,9,399)):x.translate(960,540)

Apr 21 2020 6:13 PM UTC

}// 79/140

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#circlechallenge

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Xen

remix of d/18303 by u/Cloud

function u(t) {

for(i=26;i--;)for(j=44;j--;x.fillRect(S(z=j+t*C(t))*w+860,C(z)*w+520,99,149))x.fillStyle=`hsl(${t*99},90%,${(w=1e3-i*48+4*t%2*98)/25}%)`

Apr 17 2020 1:36 PM UTC

}// 136/140

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#tunnel 2

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Xen

function u(t) {

for(c.width=i=99,x.globalCompositeOperation='xor';i--;)x.fillRect(0,0,i+S(t)*2,i+C(t)*2)

Apr 5 2020 1:52 PM UTC

}// 88/140

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test

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Xen

remix of d/18145 by u/AO

function u(t) {

with(x)arc(960+S(t*9),520+C(t*5),S(t*.7)*1111,!beginPath(lineWidth=5),9),stroke(),strokeStyle=R(0,0,C(t/3)*199)

Apr 5 2020 12:57 PM UTC

}// 111/140

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Shoutz 2 u/AO

u/AO

Also nice

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