Dweets awesomed by u/rodrigo.siqueira

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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Food

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jellyedwards

remix of d/12732 by u/marc8

function u(t) {

c.width=w=320
t%=9
for(i=0;i<w;i++)z=1-(S(k=(i-w/2)/9)/k),x.globalAlpha=z*t/9,x.lineTo(i,1+z*6*t),x.fillRect(i,80,1,70)
x.stroke()

Mar 15 2019 8:25 AM UTC

}// 130/140

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added a bit of animation to it

u/DataMeta

#hiddengem

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camel_case

function u(t) {

l={}
p=0.01
r+=0.007
for(i=0; i<50; i++){
p+=r*p*(1-p)
l[i%h]=p
for(j=0; j<h; j++){x.fillRect(t*120, 1080-l[j]*540, 2, 2)}
}
}
var r=0,h=6
{

Mar 14 2019 5:50 PM UTC

}// 140/140

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Logistics map with some bifurcation, still trying to figure out how to make it look pretty tho

u/artfarnaa

Nice, though I suggest provide a link to background info on what a logistics map is and what bifurcation does. We newbies need just a tad of hand holding.
u/rodrigo.siqueira

#bifurcation

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katkip

function u(t) {

for(i=999;i--;)r=Math.random()*t*3,x.fillRect(
959+S(r/3+S(r/9+S(r+t)/399)*r*2)*960,
539+S(r/2+C(r/5-C(r+t)/399)*r*2)*540,
2,2);

Mar 13 2019 12:34 PM UTC

}// 128/140

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#waitforit #abstract ink can't escape

u/Ath0r

cool!

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marc8

function u(t) {

c.width=w=320
for(i=0;i<w;i++){
z=1-(S(k=(i-w/2)/11)/k)**2
x.globalAlpha=z**10 //gamma
x.lineTo(i,1+z*60)
x.fillRect(i,80,1,70)}
x.stroke()

Mar 12 2019 9:59 PM UTC

}// 139/140

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The physics dweets: single slit diffraction figure. Adjust the gamma value from 1 (accurate) to whatever (enhanced).

u/rodrigo.siqueira

Morlet Wavelet + Gabor filter #wavelet

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rsrsrs

remix of d/12699 by u/rsrsrs

function u(t) {

for(c.width=i=512;i-=1/8;x.fillRect(16*(X*2+Y+16),16*(X/2-Y+Z+9),6,9))X=i%8-4,Y=i/64-4,Z=S((X*X+Y*Y)/3+t),x.fillStyle=R(a=(Z+1)*+128,a,a)

Mar 9 2019 10:29 AM UTC

}// 137/140

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better gradient monochrome

u/rep_movsd

#underrated
u/ximavus

awesome

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LimeLaser

function u(t) {

r=Math.random
p=t?p.map(([u,v,i,j]=[100*r()+910,100*r()+490,0,0])=>[u+i/4,v+j/4,i+2*r()-1,j+2*r()-1,x.fillRect(u,v,1,1)]):[...Array(9999)]

Mar 9 2019 7:37 AM UTC

}// 138/140

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Pupil Dilation (or Pandora's Box)

u/Xen

love it!
u/tomxor

Scary !
u/joeytwiddle

#virus

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pavel

remix of d/1112 by u/sigveseb

function u(t) {

for(let w=c.width=127,i=9086,a,b,n,B;a=i&w,b=i--/w;x.fillRect(a,b,1,1/(t+a/n&1^b/n)))n=b-20,B=(w*S(t*9+n/9)+(a-40)**2+n*n)/1e3,n*=B>1||C(B)

Mar 7 2019 8:31 PM UTC

}// 139/140

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#improved performance

Show more comments…
u/pavel

Original runs at 6fps on my machines this runs at 60fps. I lowered the resolution by a quarter (4x perf) and golfed 13 chars to let me declare all vars locally (2x perf).
u/tomxor

wow! this is a massive perf improvement, the original was impressive but I couldn't really see it realtime. Nice one :)
u/katkip

how
u/nender

Wow! This is amazing!
u/sigveseb

Nice!
u/f8f82804

#raytrace #d3 #pbr
u/Cloud

Cool!!!

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aoneill01

remix of d/12660 by u/aoneill01

function u(t) {

c.width|=π=3.14;for(φ=0;φ<2*π;φ+=.01)z=f=>Math.abs(f(3*φ)/f(t))**f(t),r=99*(z(C)+z(S)),x.lineTo(962+r*C(φ+t),514-r*S(φ+t));x.fill()

Mar 7 2019 2:19 PM UTC

}// 131/140

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tomxor

remix of d/12666 by u/tomxor

function u(t) {

f=_=>S((X*X+Y*Y)**.5*3+t)
eval(unescape(escape`景爨爽ㄶⱣ⹷楤瑨㵩㵲⨳㈻椭㴲⽲㭸⹦楬汒散琨爪⡘⨲⭙⬱㘩Ⱳ⨨堯㈭夫娩ⰶⰹ⤩娽㄰ⵦ⡘㵩┸ⴴⱙ㵩⽲⼴ⴴ⤬砮晩汬却祬攽恈卌⠤筚⨶ぽⰹ㤥ⰵ〥总`.replace(/u(..)/g,"$1%")))

Mar 6 2019 11:49 PM UTC

}// 140/140

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Surface Plot 2 #application

u/tomxor

Mini surface plotter v2! With an actual useful range and colour map this time.
u/tomxor

f=_=>S((S(X)**2+S(Y)**3)*3.14+t)**2
u/magna

Great!
u/mildlybean

Cool!
u/tomxor

#app

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rodrigo.siqueira

remix of d/12665 by u/katkip

function u(t) {

for(i=0;i<799;i++)
x.fillStyle=`hsl(${i},80%,${S(t)*50}%,52%`,
q=i+S(i+t),x.fillRect(960+S(i*S(i+t/q))*i*C(i)*3,540+C(i*S(i))*i*C(i+t),1,1)

Mar 6 2019 10:22 PM UTC

}// 139/140

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Abstract pointillism

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