Dweets awesomed by u/aleamb

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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Xen

remix of d/6398 by u/tillsc

function u(t) {

for(i=199;i--;x.fillStyle=R(g=C(i+t*79)*455))x.fillRect(S(i+t)*91+960,C(i+t)*97+540,3,3);x.drawImage(c,-17,-9,1954+S(t*4)*2,1099+C(t*3)*2)

Dec 28 2018 10:12 PM UTC

}// 138/140

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u/katkip

#tunnel

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13thptr

function u(t) {

c.width=w=400;x.fillText(x.font=m="17px Hello",0,19)
x.getImageData(0,0,w,j=99).data.map((e,i)=>e&&x.fillRect(j*C(i%w*.016-t)+j,i/w,3,3))

Dec 28 2018 11:13 AM UTC

}// 137/140

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Somewhat ambiguous because of implicit orthographic projection

u/13thptr

(first dweet :D)
u/13thptr

add |0 after i/w for a more solid look
u/lionleaf

Nice! Glad to see you make a first dweet :D
u/jylikangas

Welcome! Very nice 1st Dweet! Golfed to 131b -> c.width=w=400; with(x)getImageData(fillText(font="17px Hello",0,19),0,w,j=99).data.map((e,i)=>e&&fillRect(j*C(i%w/63-t)+j,i/w,3,3))
u/13thptr

thanks for the nice comments ! u/jylikangas cool tricks but it seems like inlining fillText in getImageData won't work in FF :(

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ellisk1

function u(t) {

with(x)for(m=q=t*30|0;m-->q-99;fill(arc(960+(r=m**.5*20*C(m))*S(a=m**3),540+r*C(a),w,0,7)))beginPath(fillStyle=R((w=q-m)*2,0,0,1/w**1.48))

Dec 28 2018 1:29 AM UTC

}// 138/140

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VIRUS

u/katkip

#virus I hope this will not aggravate my cold.
u/BirdsTweetCodersDweet

:O

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rodrigo.siqueira

remix of d/11562 by u/echo85

function u(t) {

for(s=300,r=5/s,j=60*t*r-2,i=-3;i<2;i+=r)for(X=i,Y=j,T=9;T--;)U=X,X=X*X-Y*Y+i,Y=2*U*Y+j,x.fillStyle=R(Y,U,X),x.fillRect(i*s+4*s,j*s+2*s,5,5)

Dec 27 2018 2:02 AM UTC

}// 140/140

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Color Mandelbrot Set

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echo85

function u(t) {

for(s=300,r=4/s,j=60*t*r-2,i=-2;i<2;i+=r){for(X=i,Y=j,T=9;T--;)U=X,X=X*X-Y*Y+i,Y=2*U*Y+j;X*X<9&&x.fillRect(i*s+4*s,j*s+2*s,4,4)}

Dec 26 2018 9:54 PM UTC

}// 128/140

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mandelbrot set

u/katkip

nice #mandelbrot #fractal

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rodrigo.siqueira

function u(t) {

eval(unescape(escape`昽渽㹻瀽渿昨渭ㄩ㩛ㅝ㭲整畲湛∱∮牥灥慴⠳⨪⡮⬱⤩Ⱞ⸮瀮浡瀨氽㹬⬢〢⹲数敡琨㌪⩮⤫氩嵽㭦⠴⤮景牅慣栨⡌Ⱪ⤽㹻䰮獰汩琨✧⤮景牅慣栨⡳ⱎ⤽㹻䴽琼ㄿ琺ㄻ砮晩汬剥捴⡎⨷⸹Ⱪ⩍⨹㤬䴪猪㠬㌶〩紩紩;`.replace(/u(..)/g,"$1%")))

Dec 25 2018 9:34 PM UTC

}// 140/140

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The Cantor Set #fractal

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katkip

function u(t) {

eval(unescape(escape`焽㤹⼨琪琩㭸⹦楬汒散琨〬〬㉥㌬㉥㌩㭦潲⡩㴱〸㭩ⴭ㬩景爨樽㘰㭪ⴭ㬩砮捬敡牒散琨椪ㄸ⭓⡴⩃⡪⤪匨椭横椩⤪焬横ㄸ⭃⡪⩩⭴⩃⡪⤪匨椪椩⤪焬㤬㤩㭸⹦潮琽✹捭∧ⱸ⹦楬汔數琨≄坉呔䕒∬ㄹ〬㘰〩`.replace(/u(..)/g,"$1%")))

Dec 25 2018 2:46 PM UTC

}// 137/140

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Message from stars.

u/katkip

eval(unescape(escape焽㤹⼨琪琩㭸⹦楬汒散琨〬〬㉥㌬㉥㌩㭦潲⡩㴱〸㭩ⴭ㬩景爨樽㘰㭪ⴭ㬩砮捬敡牒散琨椪ㄸ⭓⡴⩃⡪⤪匨椭横椩⤪焬横ㄸ⭃⡪⩩⭴⩃⡪⤪匨椪椩⤪焬㤬㤩㭸⹦潮琽✹捭∧ⱸ⹦楬汔數琨≄坉呔䕒∬ㄹ〬㘰〩.replace(/u(..)/g,"$1%")))

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ellisk1

function u(t) {

for(k=c.width|=n=960;k--;x.fillRect(n+(y/3+40)*C(a),y,7,99))j=k%n,a=j/62+((j/192|0)+(k>n))*3.2,x.fillStyle=R(b=S(a)*255,-b/2),y=(a+t*5)*30%n

Dec 25 2018 11:41 AM UTC

}// 140/140

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Ribbon Christmas Tree

u/rodrigo.siqueira

#christmas #tree

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joeytwiddle

remix of d/7638 by u/joeytwiddle

function u(t) {

for(R=Math.random,i=700;i--;x.fillRect(960+r*C(a),80+y+r/9*S(a),s=T?.01:.1,s))y=896*(R()**.5),T=y>768,r=T?9:(y|127)*(y/9+y%128)/300,a=99*R()

Dec 25 2018 8:11 AM UTC

}// 140/140

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Seasons Greetings!

u/katkip

!
u/joeytwiddle

Less wide: (y/4+y%128)/700 More real: (y*S(y/300)-2*y%128)/1200,a=99*R()
u/joeytwiddle

#christmas #xmas #tree
u/joeytwiddle

Too slow? Try s=T?.09:.2

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rodrigo.siqueira

remix of d/11528 by u/rodrigo.siqueira

function u(t) {

a=b=0
for(i=0;i<3e3;i++){
r=Math.floor(Math.random()*3)
a=(a+956*r)/2
if(r==1){b=b/4}
else{b=b+199};
x.fillRect(a,b+30,1,1)}

Dec 23 2018 4:27 PM UTC

}// 124/140

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Fractal mountains of Sierpinski Valley

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