Dweets awesomed by u/13thptr

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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DataMeta

function u(t) {

c.style.background=R();for(i=255;i--;)x.fillStyle=`hsla(${i},99%,50%,.02)`,k=512*S(t+i),x.fillRect(960+k*1.8*T(i^t),524+k*C(i),i/9+9,i/9+9)

Feb 16 2019 1:56 AM UTC

}// 139/140

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u/13thptr

Really beautiful

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cantelope

function u(t) {

eval(unescape(escape`𤠽𚁡𛁢𚐽🡛𠰨𭀩𚡡𛑓𚁴𚐪𨠬𤰨𭀩𚡡𚱃𚁴𚐪𨡝𞱦𫱲𚁸𛡦𪑬𫁓𭁹𫁥🐧𘰲𝀸𝠧𛁸𛡦𪑬𫁒𩑣𭀨𜀬𜀬𪐽𜡥𜰬𪐩𛁷👩𛰽𜠻𪐭𛐻𦱙𛁚𧐽𤠨𠰨𬀩𛁚𚐬𦠫🐵𛁸𛡣𫁥𨑲𤡥𨱴𚁷𚱘𛱚𚡷𛀵𝀰𚱙𛱚𚡷𛁳👷𛱚𛱚𛁳𚐩𦱘𛁚𧐽𤠨𤰨𬀽𪐯𞀰𚐬𝀭𚁩𛱷𚠸𚱴𚠹𚐥𞀩`.replace(/u../g,'')))

Feb 15 2019 11:41 PM UTC

}// 140/140

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u/katkip

#d3
u/katkip

awesome but #compressed

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rnbw

function u(t) {

for(c.width^=i=0;i++<40;x.arc(960,540,i*(20+S(t*3+i*25)*5),(f=t/4+i*2.515),f)){x.fillStyle=`hsl(${i*9},90%,50%,4%)`;x.fill()}

Feb 15 2019 3:54 PM UTC

}// 125/140

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stardom 💫

u/katkip

#cute
u/joeytwiddle

Feels like a relative of d/10485

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anotherkitten

function u(t) {

x.fillStyle=R(a=16+S(t/5)*9,3,30-a,.03)
x.fillRect(0,0,2e3,2e3)
for(i=900;i--;x.clearRect(960+S(i)*(j%90)*20,540+C(i)*(j%90)*30,9,9))j=i+t*t

Feb 13 2019 11:20 PM UTC

}// 140/140

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some sexy spirals in this #waitforit

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pavel

function u(t) {

for(j=t?1e3:a=b=0;j--;x.fillRect(960+450*a,540+450*b,1,1))s=Math.random()<.5?-1:1,A=(Math.hypot(a,++b)+a)/2,b=(b<0?-s:s)*(A-a)**.5,a=s*A**.5

Feb 13 2019 9:09 PM UTC

}// 140/140

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IFS #julia attractor for c=i. Play with adding different constants to a and b in the Math.hypot call

u/pavel

a+=.123,b+=.745 is called Douady's rabbit fractal
u/katkip

How! Amazing
u/13thptr

#fractal

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anotherkitten

function u(t) {

for(c.width|=i=128;i--;x.fill(p=new Path2D,p.arc(i*16,b,Math.abs(S(i/9+t/2)*40),0,8)))x.fillStyle=`hsl(${b=620+C(i/2-t)*90} 70% 40%`

Feb 13 2019 3:36 PM UTC

}// 132/140

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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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rnbw

function u(t) {

for(c.width^=i=0;i++<45;)for(j=-6;j++<23;x.fillStyle='#ac6'+(4+(i+j)%2*2))x.fillRect((i*(b=99+C(t)*35))+(a=S(t)*600%b)-500,(j*b)+a,d=b*.9,d)

Feb 7 2019 3:57 PM UTC

}// 140/140

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zooming tiles without transform! doesn't perform very well, though

u/rnbw

(i'm surprised that that hastily-made alpha adjustment worked...)

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New_Core

function u(t) {

for(i=840;i--;)x.fillStyle=`hsl(${(i*S(S(t)*S(t*2+i*.157))*C(i/520)+i*9)/(.05*C(t)+1)},99%,50%`,x.fillRect(i%40*50,~~(i/40)*50,50,50)

Feb 6 2019 12:46 PM UTC

}// 133/140

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katkip

function u(t) {

s=200;x.fillRect(t*90,540+S(t)*s+S(t*2)*s/2+S(t*3)*s/3+S(t*4)*s/4+S(t*5)*s/5+S(t*6)*s/6+S(t*7)*s/7+S(t*8)*s/8+S(t*9)*s/9+S(t*10)*s/10,10,20)

Feb 6 2019 10:28 AM UTC

}// 140/140

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#fourier transform

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