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.

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

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mmastrac

remix of d/3275 by u/magna

function u(t) {

for(c.width|=i=d=1920;z=i+250,i-=.5;x.fillText("💧",d*T(z*1122),(t+i*i*i+C(i+t))*1e3%2e3))x.globalAlpha=d/(d+(z*i+t*99)%8e4),x.font='46px a'

Oct 12 2017 4:13 AM UTC

}// 139/140

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u/cantelope

mmm can't wait for the rainy season :)
u/joeytwiddle

Nice sticky raindrops
u/joeytwiddle

#rain
u/f8f82804

#emoji

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nystrand

function u(t) {

for(x[n=t?++n%4e3:0]=n,c.width|=i=0;i++<n-2;x.lineTo(a+800,x[i-1]+400))a=x[i]+=(i%3+~t%3+~S(t*n))*x[i+~~t%3]/(399-n/18);x.stroke()

Oct 5 2017 1:42 PM UTC

}// 130/140

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u/magna

Wow!
u/artfarnaa

Double wow
u/Xen

nice work! :)
u/joeytwiddle

#shape #model #3d

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cantelope

remix of d/3246 by u/cantelope

function u(t) {

for(x.fillRect(0,0,i=(w=960)*3,i);i--;x.clearRect(w+(S(q=i/381+S(t)*2)*Z)/(Z=C(q)*Z-7)*w,540+S(p)*v/Z*w,6,6))Z=C(p=i/63.67)*(v=i%8/8+1)+3

Oct 5 2017 5:53 AM UTC

}// 137/140

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new dweet exporter site https://dweet.net/194/3252

u/innovati

Very nice!
u/cantelope

should probably have done 63.67+t
u/sigveseb

Nice!
u/joeytwiddle

#perspective #dots

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_nderscore

function u(t) {

t?(c.width|=0,x.font='92px a',x.fillText(p,S(t)*100+700,620)):speechSynthesis.speak(new SpeechSynthesisUtterance(p='Oh, hi there! 👋'))

Sep 5 2017 8:58 PM UTC

}// 134/140

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u/magna

O HAI

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FireFly

function u(t) {

for(i=2e3;!t&&i--;Math.random()>(X**2+(Y-4)**2)**.5/6&&f(7)+f(-7))X=i&3,Y=i>>2&7,f=m=>x.fillRect(240*(i>>5&7)+120-X*m,180*(i>>8)+50+Y*7,7,7)

Aug 20 2017 3:53 PM UTC

}// 140/140

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Spritegen! Generates 48 random sprites each time the dweet is run (make a change to rerun the dweet)

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u/sigveseb

I love this!
u/alien

wait WHAT !!
u/alien

D: What is going on here!! how
u/iverjo

How does it work?
u/FireFly

It's a dweetification of an older sprite generator of mine. The idea is to take a "mask" of 0..1 floats and filter a grid of random numbers for when num<mask. In this case the mask is based on euclidean distance from centre. This is done for half the sprite, and then the other half is just mirrored
u/FireFly

(You could also view it as flipping a biased coin for each mask value, with the bias given by the mask)
u/FireFly

The same principle would work just as well with larger sprites too, and more exotic/interesting mask shapes. The same rid of random numbers could be applied to different masks, or to an animated mask, to produce an animation between sprites, too!
u/nystrand

so cool!
u/joeytwiddle

Awesome. I love it. Every single one looks like a space invader!
u/iverjo

Interesting technique. Thanks for explaining :) Also, I agree with joeytwiddle
u/jick

Got a link to the original sprite generator?
u/FireFly

I never really wrote it to be shared, so it's all hardcoded and with really ugly code. I put together this animation though: https://twitter.com/FireyFly/status/80072288…
u/statenlogic

Simple, but effective! Makes me want to play 8-bit games again.
u/donbright

genius
u/joeytwiddle

#hiddengem
u/stiaje

#witchcraft
u/tomxor

#bitmap #sprite
u/KilledByAPixel

#generative pixelart
u/KilledByAPixel

#pixelart

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nystrand

function u(t) {

for(i=c.width+=0;i--;x.fillRect(a*w+1e3,b*w+540,m=w/9-9,m))[a,b,z,w=(z+9+T(t))*19]=t?x[i/3|0]:[S(i),C(i),6*i%8-3],x[i/3|0]=[b+a/77,z,a-b/77]

Aug 19 2017 1:34 PM UTC

}// 140/140

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u/iverjo

Respect!
u/joeytwiddle

Wow!
u/cantelope

unreal!
u/n0va

Impressive!
u/FireFly

This one is really cool! Keep it up! :)
u/p01

👍
u/donbright

oh man!!!
u/nystrand

thanks for all the nice comments!
u/13thptr

#d3 #perspective

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statenlogic

function u(t) {

for(c.width=d=300,e=2e3;e;a=C(e)*C(d+t),b=S(e),z=C(e)*S(d+t),q=6e3/(z+100),x.fillRect(a*q+150,b*q+85,r=z>-.1&&2+5*z**4*(a+b),r))d+=e-=.5

Aug 16 2017 8:21 PM UTC

}// 136/140

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u/sigveseb

Stellar!
u/sigveseb

The shading!
u/magna

WOW!
u/donbright

epic win
u/statenlogic

Thanks guys. It's my first dweet.
u/cantelope

this is one of the most amazing dweets i've ever seen. gr8 job!
u/nystrand

really nice first dweet!
u/n0va

I realy like this one, welldone!
u/iverjo

#sphere
u/joeytwiddle

#lighting #shading

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cantelope

function u(t) {

for(W=(c.width=1e3)/2,i=16;i--;x.stroke())for(j=17;j--;x.lineTo(W+S(p)*S(q)/Z*W,275+C(q)/Z*W))Z=C(p=.785*(i>8?j:i)+t)*S(q=.39*(i>8?i-8:j))-3

Aug 11 2017 6:18 PM UTC

}// 140/140

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Made a tutorial for this: https://cantelope.org/sphereGolfed

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u/kimber

Your website is an inspiration. Thanks.
u/cantelope

<3 @kimber
u/FireFly

Nice wireframe sphere! :D
u/alien

omg you did it !!!!!
u/cantelope

To give credit where it is due, qfox helped me shave off the last ~10 bytes.
u/donbright

:O:O:O
u/iverjo

That's really impressive. Kudos!
u/n0va

Awesome!
u/joeytwiddle

#sphere #wireframe

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FireFly

remix of d/3005 by u/FireFly

function u(t) {

for(i=5e3;Z=(i--%4>1)+i/128;i%4||x.beginPath(x.fill()))X=i%128+2>>2,x.fillStyle=R(Y=S(X*X/32+Z*Z/32-X-Z-t*6)*80+99),x.lineTo(X*60,Z*35-Y)

Aug 3 2017 9:03 PM UTC

}// 137/140

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Ripples! With proper quads instead. Add +Z*X-Z*16 after X*60 for perspective projection too (brings it up to 146)

u/FireFly

Another byte can be saved with with(x), but this causes a fair bit of slowdown for me. Thanks for some golfing tips from qfox and others on the jsgolf slack :)
u/cantelope

can't stop watching. def in my top 10 favs
u/iverjo

Very impressive!

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p01

remix of d/2962 by u/FireFly

function u(t) {

for(c.width|=i=61;i--;i&3?x.fill(x.lineTo(C(t+i*2)*j*q+960,q+!j*(i&8?-q:q))):x.beginPath(q=540))j=i&1,x.fillStyle=`hsla(${i*6},99%,50%,.3)`

Jul 29 2017 7:41 PM UTC

}// 139/140

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Another take on @Firefly et al's spinning gem 💎

u/lionleaf

#gem #diamond

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