Dweets awesomed by u/iverjo

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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rikardlindstrom

remix of d/5542 by u/rikardlindstrom

function u(t) {

i=c.width=196;x.lineWidth=.1;for(;i--;)x.moveTo(196,l=i+C(t*2+i/40)*S(t*9+i/10)*i/9),x.lineTo(0,5+l/1.2),x.lineTo(196-i,l/2);x.stroke();

Jan 5 2018 7:54 PM UTC

}// 136/140

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more cloth

u/magna

Wow!
u/iverjo

Smooth!
u/donbright

silky
u/sj_

I literally gasped when I saw this.
u/joeytwiddle

#material #cloth

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BackendForth

function u(t) {

c.width=960
r=260
for(i=-1;i<1;i+=.05)for(j=-1;j<1;j+=.05)d=11*(i*C(t)+j*S(t)+(1-i*i-j*j)**.5),d>0?x.fillRect(r+r*i,r+r*j,d,d):0

Jan 5 2018 5:01 PM UTC

}// 128/140

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u/M1T0

It looks like an eye or something
u/Lazy1337

#eye
u/Lazy1337

#metaball
u/Lazy1337

#metaballs
u/joeytwiddle

#meteyeball

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ellisk1

function u(t) {

for(c.width|=i=20;i--;)b=3*C(i/3),x.arc(600+40*i+200*S(t-7),500+200*S(t)-20*i-30*(s=(b+2)*S(5*t)),300,1.4+b/9+(d=s/9+C(t)/3),2+d),x.stroke()

Jan 5 2018 3:57 PM UTC

}// 140/140

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Shoutout to u/New_Core

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u/ellisk1

and the dweet that inspired mine d/1829
u/sigveseb

rocks hard!
u/magna

Awesome!
u/New_Core

nice.. I also wanted to do a bird but never got around to it..
u/lionleaf

Amazing!
u/iverjo

#bird
u/joeytwiddle

#organic #model

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Exca

function u(t) {

c.width|=e=y=>x.fillRect(k,720-y,50,y<0?3:8)
for(i=32;i--;){w=S(i*C(t+i/7))*(32-i)
w*=w/2
while(w>0){x.fillStyle=R(w-=8)
k=i*60
e(w)
e(-w)}}

Jan 5 2018 2:05 PM UTC

}// 140/140

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Thanks for helping with the last few bytes go to poro

u/sigveseb

the reflections really make this one!
u/joeytwiddle

Very cool. Here is a retro-spect-rum: d/2411

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ellisk1

function u(t) {

for(c.width|=i=b=132;i--;)a=t+i,x.fillStyle=R(0,i%3*b,i%3*b+66,w=.5+C(a*=2)/3),x.fillRect(960+(X=600*T(t-i/42)),560+(b+X*X/4e3)*S(a),w*=b,w)

Jan 5 2018 3:03 AM UTC

}// 140/140

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u/sigveseb

This looks great!
u/Patrick

Virtual toothpaste.
u/vain

nice fx

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sandromiccoli

function u(t) {

c.width=1920;for(i=0;i<200;i++){x.lineWidth=(C(t+i)+1)/2*((S(t*i/9)+1)/2)*20;sw=5+15*i;s=sw*S(1+t/100);x.strokeRect(960-sw/2,540-s/2,sw,s)}

Jan 5 2018 12:13 AM UTC

}// 139/140

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rle

function u(t) {

for(i=c.width=920,n=q=w=e=0.01,m=8/3,h=t/990;i--;)Q=9*(h+w-q),W=q*(h+28-e)-w,E=q*w-m*e,q+=Q*n,w+=W*n,e+=E*n,x.fillText(0,400+q*15,250+w*9);

Jan 4 2018 11:59 PM UTC

}// 139/140

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Strange Attractor

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sigveseb

remix of d/5540 by u/veubeke

function u(t) {

M=576
for(i=M*2;i--;x.fillRect(i/24<<5,i%24<<5,32,32,x.fillStyle=r<0|r>=1?'red':R(_=r*256,_,_)))r=i>=M?
Math.random():
(t+i)**4%1

Jan 4 2018 11:51 PM UTC

}// 129/140

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Veubeke's random challege

u/magna

Looks random to my human eyes
u/iverjo

Seamless!
u/sigveseb

#random

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rikardlindstrom

remix of d/5510 by u/rikardlindstrom

function u(t) {

i=c.width=196;x.lineWidth=.01*i/100;for(;i--;)x.arc(0,20+C(t*5+i/40)*C(t*3+i/7)*(191-i)*.1,i/.75,0,1.);x.stroke();

Jan 4 2018 11:31 PM UTC

}// 114/140

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u/sigveseb

cloth simulation!
u/rikardlindstrom

I surrender!
u/joeytwiddle

#material #cloth

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veubeke

function u(t) {

M=576
for(i=M*2;i--;x.fillRect(i/24<<5,i%24<<5,32,32,x.fillStyle=r<0|r>=1?'red':R(_=r*256,_,_)))r=i>=M?
Math.random():
i/M

Jan 4 2018 11:14 PM UTC

}// 122/140

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This is a template to play with drop-in replacements for Math.random(). Enter code in the last line that uses the existing variables to produce values in the range [0,1). Red squares will appear if values are out of range.

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u/veubeke

A bad example :) https://www.dwitter.net/d/5541
u/sigveseb

A bit on the long side, but looks good: https://www.dwitter.net/d/5545
u/magna

Reminder that we can now link to dweets using the short notation: d/5545
u/joeytwiddle

Try: i**t%M/M One issue with sine/cosine is more black+white than grey: .5+S(i**t)/2
u/f8f82804

#tool #template
u/joeytwiddle

#random #challenge

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