Dweets awesomed by u/Whimpers

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: #Opposites

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tomxor

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪀽𛐱𞱴🱰𛡭𨑰𚀨𦱁𛁂𧐩🐾𬀽𬀮𫑡𬀨𚁛𨐬𨠬𨰽𨐬𩀽𨡝𚐽🠨𮀮𩡩𫁬𤡥𨱴𚁡𛁢𛀳𛀳𚐬𬠽𣑡𭁨𛡨𮑰𫱴𚁘👁𛑡𛁙👂𛑢𚑼𯀱𛁲𛰽𚁲𛐴𞀩𚠪𜰯𝱥𝀬𦱡𚰨𨐭𨰩𛰲𚱘𛱲𛁢𚰨𨠭𩀩𛰲𚱙𛱲𛁡𛁢𧐩𚐩𞡰👛𧐻𬁛𭀪𜠦𝠳𧐽𦰱𝐰𚱃𚁴𚐬𞀰𚱓𚁴𚑝`.replace(/u../g,'')))

May 31 2020 10:19 PM UTC

}// 138/140

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Say hello to fluffy !!

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u/tomxor

I was aiming for a #micelle using something like SPH, it arguably looks a bit like that after 30 seconds... or maybe an amoeba. It's not very SPH, basically just n-body with verlet integration and this simple pairwise constraint: k*(r-48)**3 where r is the distance between the particles and k is a stiffness parameter.
u/nburn42

How do you encode that? I tired for a little while to build something to do it, but failed.
u/nburn42

I'll try again later and I'll get it eventually, but it would be nice if there was some tool somewhere.
u/tomxor

d/11852 to get the source just replace eval with throw
u/nburn42

Thanks!
u/nburn42

https://www.dwitter.net/d/19014
u/Xen

very nice!, hypnotic

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Natsumi

function u(t) {

c.width=1920
for (d=i=0;i<255;d=5*T(t)*i++) {
x.fillStyle=R(i,i,i);
x.fillRect(d,d,c.width-d*2,c.height-d*2)
}

Apr 29 2020 5:34 PM UTC

}// 110/140

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flashbang

u/Natsumi

experimenting with fillRect, but I'm still not sure how to make time change the colors
u/Xen

try: x.fillStyle=hsl(${i+t*99},50%,50%)

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Whimpers

function u(t) {

x.fillRect(960+C(t)*(h=300-(t>6.28&&t*11)),540+S(t)*(h),C(t)*300,S(t)*300)

Apr 28 2020 11:19 PM UTC

}// 74/140

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#circlechallenge

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AlgNinja

function u(t) {

c.width+=0;m=Math.random();t||(a=1920*m,b=1080*m,d=e=8);x.fillRect(a,b,9,9);a+=d;b+=e;1920<a|0>a?d=-d:1080<b|0>b?e=-e:a;

Apr 28 2020 5:20 AM UTC

}// 120/140

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My first dweet!

u/sigveseb

Nice!

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tomxor

remix of d/18413 by u/pavel

function u(t) {

for(w=c.width=120,i=9e3;i--;x.fillRect(i%w,i/w,1+S(9*X/d)**5*S(9*Y/d)**5,d/2+Y/4))X=i%w/30-2,Y=i/w/30,r=X*X+(S(Y-8)-t%4+2)**2,d=r>.2||C(r*5)

Apr 24 2020 12:16 AM UTC

}// 140/140

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#rain drop on a #window

u/Whimpers

That’s insane! Nice job 👍
u/magna

Wow!
u/sigveseb

Niiiiice!

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pavel

function u(t) {

for(f=c=>Math.tanh((r>1?3:13)*S(9*c/d)),Y=t/3-1,i=2e3;i--;x.fillRect(i,t*180,(1+f(X)*f(Y))*(d/2+Y/3.6),3))X=i/540-16/9,r=X*X+Y*Y,d=r>1||C(r)

Apr 22 2020 6:18 AM UTC

}// 140/140

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Experimenting with #raytracing. I finally figured out why the cosine trick from d/1112 works.

u/Cloud

WOW!

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Unum

function u(t) {

c.width=1920
for(i=0;i<1296;i++)x.fillRect((i%48)*40,i/48*40,S(t*3+i/8)*36,S(t*3+i/8)*36)

Apr 21 2020 1:50 AM UTC

}// 89/140

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Wavy

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Whimpers

function u(t) {

for(i=2e3,c.width=-1;v=26,p=i%3*3,i--;x.fillRect(150+p*S(P=i**.7)+v*C(V=i**.5),78+p*C(P)+v*S(V)*C(!p*i),1,1))c.style.filter=`sepia()invert(`

Apr 18 2020 5:14 PM UTC

}// 140/140

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u/katkip

#biology #virus #bacteria #organic
u/Xen

love it!
u/tomxor

Nice, I think this is a remix of d/17964 ? I recognise ye old p from saturn :P which I originally used it in

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pavel

function u(t) {

for(i=1920;i--;x.fillRect(i&-T,i%T*T,T=32,T))x.fillStyle=`hsl(${T*t},99%,${u[i]=u[i]*.94+T/Math.hypot(i/T-T-C(3*t)*20,i%T-16-S(4*t)*9)||0}%`

Apr 2 2020 4:46 AM UTC

}// 140/140

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Flare

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u/pavel

Inspired by https://twitter.com/ntsutae/status/124366720…
u/jylikangas

Lovely use of an array for the trail effect!
u/BriSeven

hypot?! WHAAAT how long has THAT been there?
u/katkip

this is actually easier than it looks
u/sigveseb

Looks very pretty :)
u/aleamb

amazing!
u/rodrigo.siqueira

It reminds me the light and movement of this Fluid Simulation https://paveldogreat.github.io/WebGL-Fluid-S…
u/Scaledish

hell, it looks better than the fluid simulation
u/joeytwiddle

#glow #worm

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New_Core

function u(t) {

for(c.width|=j=9;j--;)for(i=60;i--;x.fillRect(960+j*Z*50*S(j)+(99*S(i*22)*Z),540+i*S(v=i/60)*C(v-t*3+j)*Z,Z*2,Z*9*S(i/16-4)+5))Z=2**T(t/5+j)

Mar 10 2020 4:22 PM UTC

}// 140/140

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Birds

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u/13thptr

amazing #d3
u/Whimpers

wow
u/tomxor

woo!
u/yonatan

lifelike!
u/Odog8

daaaamn
u/joeytwiddle

bravo! #bird #nature
u/katkip

nice
u/vain

i really love this

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