Dweets awesomed by u/poetaster

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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KilledByAPixel

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪁼👲👭🐾𠰨𚰫𬰩𚠪𜠪𩠥𫐊𥀽𚁘𛁙𛁚𛁁𚐽🡲𚀶𛁸𛡦𪑬𫁒𩑣𭀨𦀫𚁌👚🀱𚐪𚁢👴𚡦𛑳𚠹𛑦𚐪𚁢🠰𚐬𦐬𮠽𣀿𞐫𬠨𜐹𚐺𦠪𜠬𮠩𛁚🠲𙠦𥀨𦀭𤰨𠐩𚡚𛁙𛑃𚁁𚐪𦠬𦠪𛠹𞀬𠐫𬠨𛠴𚐭𛠲𚱓𚁴𚐯𜐹𞐩𚐾𝐦𙡔𚁘𛁙𛁚𛰲𛀰𚐊𥀨𩠽𜐰𝠱𛁦𛁳🐲𞐬𜀩`.replace(/u../g,'')))

Sep 22 2020 4:53 AM UTC

}// 140/140

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Windy Tree 🍃

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neimad

remix of d/19273 by u/geb

function u(t) {

f=(X,Y,r,d)=>{if(d>9)x.beginPath(),x.arc(X,Y,d/5,0,7),x.fill(),f(X+=C(r)*d,Y+=S(r)*d,t+r+d,d*.8)}
for(c.width|=r=9;r--;)f(960,540,r*.7,420)

Jun 29 2020 5:35 AM UTC

}// 139/140

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yonatan

remix of d/18827 by u/yonatan

function u(t) {

eval(unescape(escape`景爨挮睩摴桼㵪㴱㤻椽樭ⴾ㸱㭸⹢敧楮偡瑨⡸⹦楬氨⤩⥰㴨㌪⡴⭩⩩⼹⤥㈭ㄩ⨪㈪㤹Ⱬ㵪┲ⱸ⹥汬楰獥⡱㴵㐰⭩⨹㤫匨琫椯㤩⨴〰⭫⨨瀭㤹⤬欿㜰〭瀺㐰〫瀪㈬欿㌰⵰⼱ㄺ㈰Ⱬ㼴㨲〬〬〬㤩㬻`.replace(/u(..)/g,"$1%")))

May 17 2020 5:55 PM UTC

}// 132/140

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wonky #default

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yonatan

remix of d/16091 by u/yonatan

function u(t) {

for(i=2e3;j=9,i--;n=T<0,x.fillRect(i,t*90-n*T,1,n*T*2+1,x.fillStyle=R(a=255-n*t*t,a,a)))for(T=1;j--;T+=C((i-99*S(t*k))*k/t/99)*t*45/k)k=2**j

May 11 2020 9:24 AM UTC

}// 140/140

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shoreline #slowdraw

u/KilledByAPixel

nice (but slow)

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KilledByAPixel

remix of d/18610 by u/KilledByAPixel

function u(t) {

with(x)for(k=i=700;--i;m=i+t*k/2|0,fill(arc(k-i+(r=(S(t*4+m/k)/2+1)*(m%39?1e5:3e4)/i)*S(m*=m),k+C(m)*r,r/2,0,7)))beginPath(fillStyle=R(i/2))

May 7 2020 4:28 PM UTC

}// 140/140

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Blood #Cavern 🩸 #uncompressed

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u/joeytwiddle

Sweet!
u/KilledByAPixel

#blood
u/katkip

racing inside venes
u/DataMeta

Whoa
u/sigveseb

Smaller and looks better! Nice!
u/joeytwiddle

This is probably the best #tunnel on Dwitter!
u/Ohead

wow, this dweet sent me down a "with" keyword rabbit hole. I've never seen it before!

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pavel

function u(t) {

with(x)for(i=999;i--;fillRect(~setTransform(s=24e3/i,0,0,4*s,960-i+9*s*C(a=i+60*t),540+8*s*S(a)),~rotate(T(a*a)),2,2))fillStyle=R(9,i/4,i/3)

May 4 2020 7:34 PM UTC

}// 140/140

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Underwater #cavern

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u/KilledByAPixel

sick
u/KilledByAPixel

looped https://twitter.com/KilledByAPixel/status/12…
u/pavel

One trick here is f();g();h(-1,-1) is the same as h(~f(),~g()) when f and g return a falsy value, undefined in this case.
u/pavel

Notice how none of the distance variables are based on time, only angles are, yet the distances are changing and nothing is rotating...
u/pavel

Try making the moving a little faster :)
u/pavel

After I wrote this I looked for other dweets using a similar technique and this is the earliest one I've found, and it includes an explanation d/10212
u/KilledByAPixel

Amazing work! I have not seen the ~ before, will be using it a lot now. I tried to explain the 60*t trick in one of my blog posts, https://frankforce.com/?p=7160
u/pavel

That is an amazingly detailed explanation with great visual aids.
u/pavel

To clarify your explanation, any integer time works. 60*t is naturally an integer (ish). frame is one char longer without numerical errors. In general, (n*t|0) works for any n.
u/AndrewK

privet
u/katkip

masterpiece
u/joeytwiddle

I think this also counts as a #tunnel
u/Qwitter

Awesome!

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Kirjava

function u(t) {

for(c.width|=0,i=20;i--;)b=i+10*t,a=0.07*i+t,x.fillStyle=R(0,i*5),x.fillRect(800+600*T(a)+500*S(t),S(b/5)*C((a+b)/2)*150+500+400*C(a),20,20)

Mar 30 2020 9:11 PM UTC

}// 140/140

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yonatan

remix of d/10782 by u/yonatan

function u(t) {

for(i=c.width=99;i--;)for(k=j=56;j-->-k;)x.fillRect(i,j/2+28,1/t,j>0?(S(j*j+i/j-t*7)+C(j**5-i/j*6+t)**3)*j/k:Math.hypot(j+t*9,i-k)/300/t)

Jan 20 2020 6:48 PM UTC

}// 137/140

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sunrise

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u/denzen

Amazing!
u/tomxor

Holly **** ! or a nuke on the horizon :P
u/aleamb

Brutal!!!
u/aleamb

#sunrise #sea #landscape #sun
u/13thptr

thought about a nuke too x) gret job
u/13thptr

*great
u/katkip

!! awesome
u/Leodude123

Coll
u/Leodude123

Sorry I misspelled that
u/Leodude123

I meant cool!
u/eduft15

nice man!

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katkip

function u(t) {

z=(a,b)=>C(a*a+b)<0?S(a*b/5):z(1.5*b-a,.4-a);t||(w=0);for(v=9;v--;++w)for(i=1080;i--;)x.fillStyle=R(z(i/990,w/999)*500),x.fillRect(w,i,1,1)

Dec 29 2019 3:49 PM UTC

}// 139/140

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I would like to understand how this works. I made just a random recursive formula and the result is too beautiful! #recursion is awesome

u/katkip

#slow #scanline #fractal
u/poetaster

a rose by any other name is still a rose by any other name is

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KilledByAPixel

remix of d/16826 by u/KilledByAPixel

function u(t) {

with(x)for(fillRect(0,0,2e3,2e3),q=i=300;i--;beginPath(fill(arc(960+700*S(t+i*2),540+400*C(t+i*3),i/6,0,7))))fillStyle=R(i,i?S(i)*128+128:0)

Dec 15 2019 8:20 AM UTC

}// 140/140

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Lissajous curve points

u/KilledByAPixel

#Lissajous

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