Dweets awesomed by u/f8f82804

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: #Food

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pavel

function u(t) {

f=(X,Y,r,a,s,d=1)=>r>.2&&x.lineTo(X,Y)|f(X+C(a-=s/55)*r,Y+S(a)*r,r-r/15,a,s,-d)|f(X,Y,r/3,a+s*d,s*d)
t||f(-60,600,140,0,1)|x.stroke()

Feb 14 2019 10:05 PM UTC

}// 133/140

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Barnsley-like #fern #fractal

u/rep_movsd

#underrated

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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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rodrigo.siqueira

remix of d/12312 by u/robbyg

function u(t) {

c.width|=B=(X,Y,A,L,h,v)=>L>7&&(x.lineTo(h=X+C(A)*L,v=Y-S(A)*L),B(h,v,A-t/8,L*.73),B(h,v,A+t/2,L*.73))
B(800,890,1,260)
x.stroke()

Feb 12 2019 10:36 PM UTC

}// 130/140

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Plants, thorns and dragon curves #fractal

u/katkip

Wow! Amazing
u/robbyg

I was hoping someone would come up with something better to do with that function. Awesome! :)

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username

remix of d/12308 by u/username

function u(t) {

with(x)for(shadowBlur=i=41;i--;shadowColor=fillStyle=`hsl(${i**(t%9)},99%,78%`)beginPath(fill(arc(960+11*i*C(a=t*i/3),539+11*i*S(a),i,0,i)))

Feb 12 2019 10:28 AM UTC

}// 140/140

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f8f82804

remix of d/12295 by u/f8f82804

function u(t) {

with(x)for(c.width|=0,scale(9,9),i=12;j=i--*1.57;beginPath(fill()))arc(107+45*C(A=j-t+i/2),60+45*S(A),14,(a=(t+j)%6)-2,a)

Feb 11 2019 9:49 PM UTC

}// 121/140

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#crab #dance

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21medals

remix of d/12297 by u/21medals

function u(t) {

for(c.width|=0,j=32,x.lineWidth=4;b=2,j--;)for(i=j;b--;i+=15)x.lineTo(960+C(a=t*i/16)*i*13,540+S(a)*i*13);x.stroke()

Feb 11 2019 9:39 PM UTC

}// 116/140

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f8f82804

remix of d/12261 by u/due

function u(t) {

for(c.width|=p=6.2832,x.scale(9,9),x.lineJoin='round',i=13;j=i--*p/4;x.arc(107+45*C(A=j-t+i*p/12),60+45*S(A),14,(a=(t+j)%p)-1,a));x.stroke()

Feb 11 2019 5:56 PM UTC

}// 140/140

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remixed with cleaner line joins

u/rnbw

reminds me of kanizsa's triangle for some reason

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robbyg

function u(t) {

f=(X,Y,w)=>{var W=w/2,h=X-W,v=Y-W
x.rect(h,v,w,w)
if(W>9)f(h,v,W),f(h+w,v,W),f(h,v+w,W),f(h+w,v+w,W)}
t||f(960,540,540)
x.fill('evenodd')

Feb 11 2019 1:07 AM UTC

}// 137/140

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#recursive squares

u/robbyg

Thanks u/katkip for the recursive examples
u/katkip

Beautiful
u/robbyg

133: f=(X,Y,w,W,h,v)=>(W=w/2)>4&&(x.rect(h=X-W,v=Y-W,w,w),f(h,v,W),f(h+w,v,W),f(h,v+w,W),f(h+w,v+w,W)) t||f(960,z=540,z) x.fill('evenodd')

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rodrigo.siqueira

function u(t) {

c.width|=X=Y=Z=6;for(i=3e3;i--;)
X+=.1*(Y-X),
Y+=.01*(X*(29-Z)-Y),
Z+=.01*(X*Y-1.6*Z),
x.fillRect(960+X*30+Y*C(t*2)*10,1130-Z*22,6,9)

Feb 11 2019 12:26 AM UTC

}// 133/140

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Butterfly effect using Lorenz nonlinear equations with chaotic behavior. #Lorenz #attractor

u/katkip

#cute btw

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pavel

function u(t) {

with(x)for(c.width|=j=88,scale(9,9);i=j-->>3;arc(107+3*(9-i)*S(p/2),60,6*i,A=(j%8-6||beginPath(stroke()))*11/7+p/4,A))p=S(a=5*t-i/5)+a

Feb 9 2019 11:07 PM UTC

}// 134/140

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Square dance #beesandbombs

u/katkip

#loop

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