Dweets awesomed by u/Gopello

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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Flopster

remix of d/193 by u/lionleaf

function u(t) {

c.width|=h=t%6
k=h<1?0:1-5**-(h-1)
for(m=i=350;i--;)r=(i+9)*k*h,x.fillStyle=R(m,0,r),x.fillRect(C(i/4)*r+i%4*m+m,S(i/4)*r+(h-2)**2*m+m,9,9)

Jan 1 2018 1:17 AM UTC

}// 139/140

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Inspired by veubeke. Happy New Year!

u/Flopster

Edit: Inspired by a remix chain starting from d/192.
u/lionleaf

Awesome remix :D (I'll add the remix link for ya)
u/quuxman

damn I didn't post the first fireworks in 2018 :-} https://www.dwitter.net/d/5096

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ellisk1

function u(t) {

x.fillRect(0,0,q=c.width=2e3,q);for(i=q;i--;){r=100+(i/1e2)**4/t;z=6*S(i)+t*i/r;x.fillStyle="#fff";x.fillRect(1e3+C(z)*r,500+S(z)*r,5,5)}

Jan 1 2018 1:04 AM UTC

}// 137/140

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u/lionleaf

Awesome! A rotating black hole?
u/ellisk1

Yep! A black hole was the inspiration!!
u/donbright

awesome, closest thing to blackhole ive seen on here
u/rcdr18

What a great idea! :)

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mchll.bd

remix of d/888 by u/jczimm

function u(t) {

c.width=1920;
for(i=0;i<500;i++)for(j=0;j<8;j++){x.fillRect(960+500*C(i)*S(T(t/3.1)+j/i),520+500*S(i),10,10)}

Dec 31 2017 11:51 PM UTC

}// 109/140

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Pjaerr

remix of d/4868 by u/Pjaerr

function u(t) {

c.style.background=R();x.fillStyle=R(...[S,C,T].map(_=>127*(_(t)+1)));a=2.3998*frame;r=8*frame**.5;x.fillRect(r*C(a)+960,r*S(a)+540,8,8)

Dec 31 2017 9:35 PM UTC

}// 136/140

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u/Bendoman

Trying to relive the glory days.
u/@no_identd

Try 2.3999631 for maximum IEEE single float precision (it'll expand internally to 2.3999631404876708984375 due to how IEEE754 works)

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rippedspine

function u(t) {

a=300;b=a*2;for(i=2;i;i--)x.strokeStyle=R(C(t)*-255,S(t)*255,S(t)*-255);x.beginPath();x.arc(b+S(t)*a,b+C(t)*a,b,0,Math.PI*2);x.stroke();

Dec 31 2017 9:32 PM UTC

}// 136/140

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u/Gopello

Wood texture

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romstr

function u(t) {

c.width^=0
for(i=0;i<9;i++)
for(j=0;j<50;j++){
x.fillStyle=R(j*4,255,0)
x.fillRect(c.width/2+S(t*j)*10*j,j*20,25,25)}

Dec 31 2017 9:19 PM UTC

}// 117/140

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coderkid

remix of d/5018 by u/veubeke

function u(t) {

r=a=>x.fillRect(a*99,540+s*99,99,3);for(x.fillStyle=R(0,0,a=99,.01);a--;r(16+c*s))s=S(y=t/9+a)*4,c=C(y),c<.5&&r(3+c*s),r(8+c*2),r(12);

Dec 31 2017 9:11 PM UTC

}// 134/140

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