Dweets awesomed by u/Kalanchoe

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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bligglenuber

function u(t) {

w=600;c.width=w*2;a=60+10*S(t/3);b=200;d=150;e=a-b;for(var i=0;i<500;i++){m=i*e/b;x.lineTo(w+e*C(i)+d*C(m),w/1.8+e*S(i)-d*S(m))};x.stroke();

Feb 24 2017 4:56 PM UTC

}// 140/140

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u/dogspace

limacons are my fav polar shape!

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gormisdomai

remix of d/1192 by u/gormisdomai

function u(t) {

c.width=1920;
for(i=0;i<200;i++)
x.fillRect(950+T(t+i)*900, 0, 20, 2000)
for(i=0;i<200;i++)
x.fillRect(0, 350+T(t+i)*900, 2000, 20)

Feb 24 2017 2:33 PM UTC

}// 131/140

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"Dislocation #3"

u/katkip

#tagfail

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BNeutral

function u(t) {

w=t/1.4;s=100/t;v=80/t;x.fillStyle=R(255*S(w));x.fillRect(v*16*Math.pow(S(w),3)+960-s/2,540-s/2-v*(13*C(w)-5*C(2*w)-2*C(3*w)-C(4*w)),s,s);

Feb 24 2017 9:54 AM UTC

}// 138/140

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u/Kalanchoe

cute!
u/iverjo

#heart
u/ItzChimp

Do you have to use Math.pow here? Can't you use ** instead?

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Birdinadream

function u(t) {

q=255;b=540;x.fillStyle=R(9,9,9,.1);x.fillRect(0,0,1920,2*b);x.fillStyle=R(q,q,q,1);for(i=0;i<99;i++)x.fillRect(b+i+T(t)*99,b+C(t*i)*b,6,2)

Feb 24 2017 8:41 AM UTC

}// 139/140

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donbright

remix of d/1055 by u/paberr

function u(t) {

x.font="99px Arial";for(i=64;i;i--)w=3+i%8<<7,h=i/8<<7,(i/8^i)%2?x.fillRect(w,30+h,128,128):1,x.fillText(i%29<1?"♚":i%37<1?"♔":" ",w+20,h)

Feb 24 2017 7:27 AM UTC

}// 138/140

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stalemate!

u/5Mixer

Chess pieces were a nice touch :)
u/sigveseb

cool ^^
u/donbright

#chess

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323454

function u(t) {

t=t*10
x.lineTo(Math.abs(S(t))*t*10, Math.abs(C(t))*t*10)
x.stroke()

Feb 24 2017 7:24 AM UTC

}// 68/140

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u/fson

Like a spider weaving a web.

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serkan.ergun

function u(t) {

c.width=1920;for(a=0;a<(p=7);a+=.1){r=80*(S(4*t)+1)*(2+S(a)*(((C(a)**2)**.25)/(S(a)+1.4)-2));x.lineTo(960+r*C(a), 450-r*S(a))}x.fill()

Feb 24 2017 6:52 AM UTC

}// 134/140

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Kalanchoe

function u(t) {

g=(j)=>(1-(D&2))*(j^D&1);t?(i=x.getImageData(X+=g(0),Y+=g(1),1,1),D+=(i.data[3]^=255)?1:3,x.putImageData(i,X,Y)):(c.width=198,X=99,Y=56,D=0)

Feb 24 2017 4:41 AM UTC

}// 140/140

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Langton's ant! Initial settings (c.width=198,X=99,Y=56,D=0) can be changed. D%4 = direction where 0,1,2,3 correspond to down,right,up,left.

u/Kalanchoe

Faster version: speed=40;g=(j)=>(1-(D&2))*(j^D&1);while(speed-->0)t?(i=x.getImageData(X+=g(0),Y+=g(1),1,1),D+=(i.data[3]^=255)?1:3,x.putImageData(i,X,Y)):(c.width=198,X=99,Y=56,D=0)
u/donbright

brilliant!

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travis

function u(t) {

r=Math.random
for(i=0;i<23;i++){//fun3
x.fillStyle=R(i*10,S(t)*50+100,C(t)*50+100,0.69);
x.fillRect(51+i*75+C(t*r())*300,(t*10*r()),31,31)
}

Feb 24 2017 4:06 AM UTC

}// 140/140

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sigveseb

remix of d/271 by u/3bl3gamer

function u(t) {

W=c.width=255;for(i=9<<12;a=i&W,b=i>>8,n=b-45,m=a-99,i--;x.fillRect(a,b,A=1/(((t+a/n)%2)^b/n),A))n*=(B=(W*S(t*29+n/5)+m*m+n*n)/5e3)<1?C(B):1

Feb 24 2017 12:35 AM UTC

}// 140/140

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Based on some of 3b3lgamer's stuff (remix link got broken).

Show more comments…
u/donbright

dude you are the king,.. O M GOSH
u/Renaud___

Fantastic :S
u/lionleaf

Fixed the remix link for ya :)
u/nashcat

holy sh*t
u/Kalanchoe

H...how? This is so impressive.
u/magna

Needs more music.
u/xem

inhuman
u/donbright

still the one that blew my mind the most.
u/lionleaf

#wobble #wobbly #water #mirror #checkerboard #refraction #sphere
u/Xaotic

wtf
u/firegodjr

#raytracing #best
u/stiaje

#witchcraft
u/sigveseb

This one used to be fast, wonder why it is slow now?

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