Dweets awesomed by u/LimeLaser

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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andrea270872

function u(t) {

$=t*97%11*180
H=t*500%1080
x.fillStyle=R(t*10%255,$/4,$/2,.4)
x.save()
x.translate($,H)
x.rotate(t/3)
x.fillRect(0,0,50,50)
x.restore()

Mar 8 2019 2:17 PM UTC

}// 135/140

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gradient crystal scales

u/Xen

nice
u/pavel

x.setTransform(1,0,0,1,$,H),x.rotate(t/3) avoids save/reset
u/andrea270872

cool, thanks

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katkip

remix of d/12688 by u/danny@hille.dk

function u(t) {

for(c.width|=i=0;i<668;)x.fillRect(960+S(t+(i/59)+i*3.14)*99,i++*1.5,C(i/19*S(i*3.14-t)+t*9)<0?19:9,17)

Mar 8 2019 12:37 PM UTC

}// 103/140

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Now it's a DNA

u/katkip

actually a double helix spiral because it has no bands
u/rodrigo.siqueira

#dna

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danny@hille.dk

remix of d/12686 by u/danny@hille.dk

function u(t) {

for(c.width|=i=0;i<66;)x.fillRect(960+S(t+(i*3))*99,i++*17,99,17)

Mar 7 2019 11:31 PM UTC

}// 65/140

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pavel

remix of d/1112 by u/sigveseb

function u(t) {

for(let w=c.width=127,i=9086,a,b,n,B;a=i&w,b=i--/w;x.fillRect(a,b,1,1/(t+a/n&1^b/n)))n=b-20,B=(w*S(t*9+n/9)+(a-40)**2+n*n)/1e3,n*=B>1||C(B)

Mar 7 2019 8:31 PM UTC

}// 139/140

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#improved performance

Show more comments…
u/pavel

Original runs at 6fps on my machines this runs at 60fps. I lowered the resolution by a quarter (4x perf) and golfed 13 chars to let me declare all vars locally (2x perf).
u/tomxor

wow! this is a massive perf improvement, the original was impressive but I couldn't really see it realtime. Nice one :)
u/katkip

how
u/nender

Wow! This is amazing!
u/sigveseb

Nice!
u/f8f82804

#raytrace #d3 #pbr
u/Cloud

Cool!!!

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andrea270872

function u(t) {

I=t*3320%2e3;J=t*94%1e3
i=A=I/2e3;B=J/1e3
for(;i++<13;[A,B]=[A*A-B*B+.3,2*A*B],C=A*A+B*B)
x.fillStyle=R(C*200,0,0,.3)
x.fillRect(I,J,i*=4,i)

Mar 7 2019 8:26 PM UTC

}// 140/140

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Ghost of Julia ver5 (in red)

u/f8f82804

#fractal
u/13thptr

weird rendering:I love it :)
u/andrea270872

thanks... I had to cut a lot of corners to even get something looking like that :D
u/13thptr

#scanline
u/Xen

love it!

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pavel

remix of d/12669 by u/tomxor

function u(t) {

for(c.width=i=512;i-=1/8;x.fillRect(16*(X*2+Y+16),16*(X/2-Y+Z+9),6,9))X=i%8-4,Y=i/64-4,Z=S((X*X+Y*Y)/3+t),x.fillStyle=`hsl(${Z*99} 99% 50%`

Mar 7 2019 8:14 PM UTC

}// 139/140

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andrea270872

remix of d/12677 by u/andrea270872

function u(t) {

I=(t*3350)%2e3;J=(t*94)%1e3
A=I/900-1;B=J/500-1
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*=2,i)

Mar 7 2019 5:38 PM UTC

}// 134/140

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Ghost of Julia ver3

u/f8f82804

#dither #halftone #fractal

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LimeLaser

remix of d/12626 by u/qm3ster

function u(t) {

r=Math.random
p=t?p.map(([u,v,i,j]=[99,99,1,1])=>[u+i,v+j,i+(960-u)/1e4+r()-0.5,j+(540-v)/1e4+r()-0.5,x.fillRect(u,v,4,4)]):[...Array(99)]

Mar 7 2019 7:30 AM UTC

}// 138/140

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99 Accelerating Particles (thank you qm3ster)

u/LimeLaser

I have been hoping to make a particle system that persists individual positions and velocities for a while now. With the code golfing qm3ster has done, I can finally do it!

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Porpr

function u(t) {

c.width^=0
l=a=0
for(i=0;i<2e3;i++){
a+=2.0944+S(t*0.6)*.004
l+=0.2
x.strokeStyle="DARKRED"
x.lineTo(960+C(a)*l,600+S(a)*l)}x.stroke()

Mar 7 2019 1:36 AM UTC

}// 134/140

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TriangleVortex

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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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