Dweets awesomed by u/cantelope

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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sfz

remix of d/2313 by u/tapgiles

function u(t) {

with(x)!t?translate(960,a=540):beginPath(),moveTo(a,0),rotate(9e6*t/~new Date),lineTo(a,0),strokeStyle=`hsla(${t*9},99%,50%,${t%1}`,stroke()

Mar 26 2017 8:08 PM UTC

}// 140/140

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Give it a minute

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u/donbright

i wound up with a golden pentagon, i love it
u/donbright

i wound up with a golden pentagon, i love it
u/tapgiles

Not bad ^^
u/nonce

wow so cool, also great pro tip: you can leave off the ')' in an hsl/hsla string!
u/sfz

found that one by accident
u/z3vin

Parentheses trick doesn't seem work on iPhone safari :(

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cantelope

function u(t) {

c.width=1920;x.fillStyle="red";g=540;for(i=0;i<g;p=i-t,l=S(p)*i,Z=g-l*C(t),s=g*9/Z,x.fillRect(960+18/(Z*18)*l*S(t)*g,g+C(p)*i/Z*g,s,s),++i);

Mar 26 2017 2:54 AM UTC

}// 140/140

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u/innovati

it's like a sunflower pattern :D

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recursive

remix of d/2281 by u/thespite

function u(t) {

w=c.width|=0
for(a=1920;a-=40;)
for(b=1500;b-=15;)x.fillRect(a,b+C(C(((a-C(t*1.3)*800-960)**2+(b-S(t)*200-540)**2)**.1-t*2)*6)*100-200,40,8)

Mar 26 2017 12:30 AM UTC

}// 140/140

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u/donbright

nice work

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keithclark

function u(t) {

for(a=c.width^=0;d=C(--a+t)*S(b=a*1.2502),e=S(a+t)*S(b);x.fillRect(d*h+960,C(b)*h+540,i=h/40-5,i))h=900/(2-e)

Mar 25 2017 3:25 PM UTC

}// 109/140

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u/recursive

Huge savings. I wonder what else could be added.
u/donbright

@recursive . ... https://www.dwitter.net/d/2306
u/keithclark

i'm trying to get rotation along 2 axes
u/keithclark

Try changing 1.2502 to different values for different patterns. For example: use 70.286 for death star
u/PeteAJ

A little confused by the for loop. The second statement just defines the variables d and e?
u/joeytwiddle

Here is an earlier version: https://www.dwitter.net/d/2278
u/joeytwiddle

#hiddengem
u/f8f82804

@PeteAJ I've used the same for trick before -- if either of a+t or b are zero, their sine is zero so the product is false-y, which terminates the loop

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Jenky

remix of d/2256 by u/sfz

function u(t) {

t=t%((r=Math.random)()*.6+.6)>.01||new Audio(`http://www.soundboardcity.com/sounds/fart-machine/fart${~~(r()*9)+1}.mp3`).play()

Mar 25 2017 1:00 AM UTC

}// 127/140

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Guys I'm very mature

u/donbright

Me too. We are all very grown up and serious here on Dwitter. Your insightful analysis of methane emissions will prove a great contribution to climate science.
u/joeytwiddle

Well this made me laugh :)

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keithclark

function u(t) {

for(a=c.width|=0;l=C(t),m=S(t),d=C(a)*S(b=a*1.2502),e=S(a--)*S(b);x.fillRect((d*l+e*m)*h+960,C(b)*h+540,i=h/40-5,i))h=900/(2+(e*l-d*m))

Mar 23 2017 5:49 PM UTC

}// 135/140

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u/recursive

Superbly golfed
u/keithclark

Even smaller: https://www.dwitter.net/d/2298
u/donbright

bravo

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keithclark

function u(t) {

for(c.width|=a=8,l=C(t),m=S(t);a--;x.fillRect((d*l-e*m)*h+960,(g*l-f*m)*h+520,h/=5,h))d=a&1||-1,e=a&2,f=a&4&&-2,g=d*m+e*l,h=450/(4+g*m+f*l)

Mar 22 2017 1:29 PM UTC

}// 139/140

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aemkei

remix of d/1137 by u/mxfh

function u(t) {

r=500;c.width^=0;for(I=φ=2;φ>-2;φ-=1/2e3)x.fillRect(C(φ)*S(λ=φ*r-t)*r+999,S(φ)*r+520,W=(16&(T(I=I*9%32432)+2))*C(λ/2),W)

Mar 20 2017 10:34 PM UTC

}// 120/140

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A tiny planet

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sfz

remix of d/2226 by u/CHz

function u(t) {

c.width=306
with(x)for(a=34;a--;)for(b=20;b--;)save(),translate(9*a,9*b),rotate(t*(a/9+b)),fillRect(0,0,7+6*C(b/6+t*a),5+4*S(a+t)),restore()

Mar 20 2017 5:57 AM UTC

}// 140/140

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sfz

remix of d/2202 by u/danielkagan

function u(t) {

c.width=2e3;a=500;f=(q,w)=>a+a*q(w*.14);m=f(C,t*7);t/=7;for(i=99;i--;)x.moveTo(f(S,i)+m,f(C,i)),x.lineTo(f(S,i*t)+m,f(C,i*t));x.stroke()

Mar 18 2017 10:50 PM UTC

}// 136/140

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u/donbright

fascinating

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