Dweets awesomed by u/gpolonus

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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Food

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gpolonus

remix of d/17830 by u/gpolonus

function u(t) {

c.width/=1
onmousemove=e=>c.a=e.x/15
f=(a,y)=>x.fillRect(a,y,9,9)
for(i=0;i++<2e3;)f(i,S(t+i/100*(c.a||0))*400+500)

Mar 8 2020 1:53 PM UTC

}// 115/140

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Variable Sine wave frequency. Move your mouse! #interactive

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Whimpers

function u(t) {

for(k=i=960;--i;x.fillRect(k+S(i*j)*6+S(m=k*j^k)*r,540+C(m)*r,s=3e5/k*S(j*9),s))j=i/k+t/4,r=1e5/i,x.fillStyle=R(i,i/3)

Mar 6 2020 4:37 PM UTC

}// 118/140

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Lava flowers

u/katkip

wow
u/PoweredByWill

Very cool. This reminds me of part of a demoscene entry called Transgression 2 by MFX.
u/KilledByAPixel

remix of d/15976

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New_Core

remix of d/17855 by u/BriSeven

function u(t) {

c.width|=c.style.filter=`blur(9px)contrast(900%)`
x.scale(80,99)
for(i=2;i--;x.fillText(~~v%10,9,9))x.fillStyle=R(0,v=t+i/2,0,S(v*6.28+5)+1)

Mar 6 2020 12:37 PM UTC

}// 140/140

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I didnt look at your code but I guess you did something like this...

u/aleamb

amazing! love it! #morphing #numbers #blur
u/BriSeven

nearly. i also modulated the blur so the complete crisp numbers would be visible and the morph a bit more metabally
u/BriSeven

i tried to modify this to add it back but i can’t get it under 150
u/sigveseb

900% can be written as just 9
u/yonatan

and the closing paren can go too

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gpolonus

remix of d/17848 by u/gpolonus

function u(t) {

s=n=>(n+1)*127
for(i=80;i-->0;){x.fillStyle=R(s(S(t*i*3)),s(C(t*i)),s(S(C(t))),1);x.beginPath();x.arc(960,540,i*24,0,2*Math.PI);x.fill()}

Mar 5 2020 7:36 PM UTC

}// 137/140

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Hypnotism #trippy #colors #color

u/tongong

#lsd

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gpolonus

remix of d/17847 by u/gpolonus

function u(t) {

c.width|=0
s=n=>(n+1)*127
for(i=-1;i++<80;)for(j=-1;j++<72;){x.fillStyle=R(s(S(t*i*10)),s(C(t)),150,1);x.fillRect(i*24,j*15,24,15)}

Mar 5 2020 6:49 PM UTC

}// 131/140

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In your face #trippy #colors #color

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gpolonus

function u(t) {

c.width|=0
s=n=>(n+1)*127
for(i=-1;i++<80;)for(j=-1;j++<72;){x.fillStyle=R(s(S(t*i)),s(C(t*j)),s(C(t*i*j)),1);x.fillRect(i*24,j*15,24,15)}

Mar 5 2020 2:04 PM UTC

}// 138/140

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Pixels #color #colors

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tomxor

remix of d/17835 by u/pavel

function u(t) {

eval(unescape(escape`𫱮𫑯𭑳𩑭𫱶𩐽𩐽🡦𚁸𛡬𪑮𩑗𪑤𭁨🐴𛀴𛁣𛡷𪑤𭁨👩𫡮𩑲𥱩𩁴𪀬𤠽𩐩𒡦🐨𦀬𦐬𭰩🐾𚁒𛡸𛑘𛑷𛰲𚐪𚠲𚰨𤠮𮐭𦐭𭰯𜠩𚠪𜠼𭰪𭰪𝠮𜠸𚰳𩐴🱷🠶𙠦𩠨𦀬𦐬𭰯🐲𚑼𩠨𦀫𭰬𦐬𭰩𯁦𚁘𛁙𚱷𛁷𚑼𩠨𦀫𭰬𦐫𭰬𭰩𞡸𛡳𭁲𫱫𩑒𩑣𭀨𦀬𦐬𭰬𭰩`.replace(/u../g,'')))

Mar 5 2020 2:17 AM UTC

}// 135/140

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#interactive #quadtree (move your mouse)

u/tomxor

Note the intersection is fuzzy since full circle-AABB takes too much code, instead it's just circle-point + current subdivision width based radius (w*w*6.28), i.e it becomes more accurate as it converges.
u/tomxor

This is why there are a bunch of divisions around it that would not exist with an exact test. Pavel's doesn't do this by cleverly choosing a geometry that only need intersect the top left of each square.
u/katkip

Nice!

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gpolonus

remix of d/17827 by u/gpolonus

function u(t) {

t?0:p=q=0
f=(a,b,c,d)=>x.moveTo(a,b)|x.lineTo(c,d)|x.stroke()
onmousemove=e=>((a,b)=>f(a,b,q,p)|f(2e3-a,b,2e3-q,p)|(q=a,p=b))(e.x*3.4,e.y*3)

Mar 4 2020 6:44 PM UTC

}// 140/140

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Mirror lines #interactive

u/gpolonus

The cursor if off in the y direction. I wanted to change the 3 multiplier to 3.4 but couldn't figure out where to save characters. Any suggestions would be much appreciated!

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pavel

function u(t) {

c.width|=f=(X,Y,w)=>X*X+Y*Y<=2e6*S(t/9)**2?w>9&&f(X,Y,w/=2)|f(X+w,Y,w)|f(X,Y+w,w)|f(X+w,Y+w,w):x.strokeRect(X,Y,w,w);f(x.lineWidth=4,4,1072)

Mar 4 2020 5:31 AM UTC

}// 140/140

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Quadtree

Show more comments…
u/katkip

Awesome!
u/tomxor

I love it !
u/sigveseb

Cool!
u/Xen

SEXY!
u/aleamb

love it!
u/tomxor

#Quadtree
u/Qwitter

YES!!
u/vain

Never saw this fx before. But it looks really beautiful

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gpolonus

function u(t) {

c.width/=1
onmousemove=e=>c.a=e.x
f=(a,y)=>x.fillRect(a,y,9,9)
for(i=0;i++<2e3;)f(i,S(t+i)*c.a+500)

Mar 3 2020 10:39 PM UTC

}// 99/140

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#interactive tube

u/gpolonus

need to mousemove to get it started

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