Dweets awesomed by u/geb

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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katkip

function u(t) {

r=(X,Y,s)=>{x.fillRect(X,Y,9,-s*8);if(s>1)r(X-s*4,Y-s*2,s/2),r(X+s*4,Y-s*2,s/2)};r(960,960,100)

Mar 7 2019 6:00 PM UTC

}// 95/140

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#recursive

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andrea270872

function u(t) {

I=(t*3350)%2e3;J=(t*94)%1e3
A=I/1e3-1;B=J/600-1
i=0;while(((A*A+B*B)<4)&&(i<25))[A,B]=[A*A-B*B-.8,2*A*B+.2,i++]
x.fillRect(I,J,i,i)

Mar 7 2019 5:29 PM UTC

}// 131/140

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Ghost of Julia ver2

u/andrea270872

/* LOGIC The point (I,J) depends on t and scans the screen from top-left to bottom-right, then restarts. It also hops of circa 50 pixels in both directions. The point (A,B) is a scaled and translated version of (I,J); (A,B) is centered arund (0,0) and goes approximately from -1,5 to +1.5 in both directions. The loop is a simplified version of the Julia iterated fractal loop: - i starts from 0, and goes max to 25 iterations, and the point starts at z=A+i*B - the function being computed is: Z=Z^2+(-0.8,+0.2) separating real and imaginary part, the formula is: A = A*A-B*B-.8 AND B = 2*A*B+.2 and the notation [A,B] saves me from using a temp variable. The loop exits if: - i is 25 or - distance of (A,B) from (0,0) is more than 2 */
u/f8f82804

#dither #halftone #fractal

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aoneill01

remix of d/12660 by u/aoneill01

function u(t) {

c.width|=π=3.14;for(φ=0;φ<2*π;φ+=.01)z=f=>Math.abs(f(3*φ)/f(t))**f(t),r=99*(z(C)+z(S)),x.lineTo(962+r*C(φ+t),514-r*S(φ+t));x.fill()

Mar 7 2019 2:19 PM UTC

}// 131/140

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tomxor

remix of d/12666 by u/tomxor

function u(t) {

f=_=>S((X*X+Y*Y)**.5*3+t)
eval(unescape(escape`景爨爽ㄶⱣ⹷楤瑨㵩㵲⨳㈻椭㴲⽲㭸⹦楬汒散琨爪⡘⨲⭙⬱㘩Ⱳ⨨堯㈭夫娩ⰶⰹ⤩娽㄰ⵦ⡘㵩┸ⴴⱙ㵩⽲⼴ⴴ⤬砮晩汬却祬攽恈卌⠤筚⨶ぽⰹ㤥ⰵ〥总`.replace(/u(..)/g,"$1%")))

Mar 6 2019 11:49 PM UTC

}// 140/140

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Surface Plot 2 #application

u/tomxor

Mini surface plotter v2! With an actual useful range and colour map this time.
u/tomxor

f=_=>S((S(X)**2+S(Y)**3)*3.14+t)**2
u/magna

Great!
u/mildlybean

Cool!
u/tomxor

#app

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rodrigo.siqueira

remix of d/12665 by u/katkip

function u(t) {

for(i=0;i<799;i++)
x.fillStyle=`hsl(${i},80%,${S(t)*50}%,52%`,
q=i+S(i+t),x.fillRect(960+S(i*S(i+t/q))*i*C(i)*3,540+C(i*S(i))*i*C(i+t),1,1)

Mar 6 2019 10:22 PM UTC

}// 139/140

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Abstract pointillism

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oddgoo

function u(t) {

c.width=1e3;l=255
for(i=470;i>S(t);i--)for(j=0;j<3;j++){x.fillStyle=R(j*l/2,l-j*l,j*l/4);x.fillRect(i*2,S((i+t*59)/30)%(S(t))*l+l+j*9,20,9)}

Mar 6 2019 9:51 PM UTC

}// 140/140

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Sour Waves

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tomxor

function u(t) {

f=_=>S((X*X+Y*Y)**.5*5+t)
eval(unescape(escape`景爨爽ㄶⱣ⹷楤瑨㵩㵲⨱㈻椭㴱⽲㭸⹦楬汒散琨爪⡘⨲⭙⬶⤬爪⡘⼲ⵙ⬳⭚⤬㌬㌩⥚㴱ⵦ⡘㵩┲ⴱⱙ㵩⽲⼶ⴱ⤬砮晩汬却祬攽恈卌⠤筚⨱㈰紬㤹┬㔰╠`.replace(/u(..)/g,"$1%")))

Mar 6 2019 9:35 PM UTC

}// 140/140

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Surface Plot #application

u/tomxor

Mini surface plotter! for visualising 2D scalar fields. Plug your own function into f :)
u/f8f82804

#d3
u/aleamb

wow!
u/katkip

f=_=>S(X*X*t+Y*Y*t)+C(X*X*t-Y*Y*t)
u/tomxor

#app

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pavel

remix of d/12604 by u/pavel

function u(t) {

for(a=q=k=2e3;r=k--/q;x.fillRect(960+500*i,540+500*r*S(a),9,9))i=r*C(a+=t/r),x.fillStyle=R(g=400*((d=1-r*r)**.5*i*S(t)+(d-.3)*C(t))**2+50,g)

Mar 6 2019 10:25 AM UTC

}// 140/140

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pavel

remix of d/12626 by u/qm3ster

function u(t) {

for(w=i=3e3;i--;x.fillRect(p[0]+=S(a=++t*i),p[1]+=C(a),4,4))p=u[j=i>>5]=u[j]||[a=i*i%2e3,b=a**3%1080,R(0,a/8,b/4)],x.fillStyle=p[2]

Mar 6 2019 7:38 AM UTC

}// 131/140

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Don't mind me, just testing my old markers

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pavel

function u(t) {

for(w=c.width=1e3,i=99;r=10*i--;i?x.stroke():x.fill())x.beginPath(p=(1+t/2-r/w)%2),x.ellipse(480,270+20*S(p*40)/9**p+!i*w*(p-2),r,r/3,0,0,7)

Mar 6 2019 7:01 AM UTC

}// 140/140

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#water #drop

u/katkip

Looks good
u/aleamb

great!
u/mcdxn

damn!

dwitter.net | geb (18678)