Dweets by u/lurifax

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: #Opposites

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lurifax

remix of d/3262 by u/lurifax

function u(t) {

for(x[f='fillRect'](i=0,0,2e3,2e3);i++<(w=255);x.fillStyle=R(a=(w-i)*2,a/2.5,50,1.2-i%w/w))x[f](960-S(i+t)*i*3,540-C(i+t)*i*2,d=t/4*i%18,d)

Dec 27 2017 10:15 AM UTC

}// 139/140

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Light swirl - Warning if you stare to long in the middle your vision might be temporary impaired :)

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lurifax

remix of d/3360 by u/lurifax

function u(t) {

for(x.fillRect(0,0,i=2e3,i);i>0;i-=.2)x.clearRect(960+(350+(e=99*S(t/6))*C(b=i/6.2))*C(d=i%6.29)*C(t)+e*S(b)*S(t),540+(350+e*C(b))*S(d),2,2)

Nov 16 2017 8:38 PM UTC

}// 140/140

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Inverted donut

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lurifax

function u(t) {

p=6.28;for(c.width|=i=p**4;i>0;i-=.3)x.fillRect(960+800*S(t)+(250+99*C(b=i/p))*C(d=i%p+t*2)*C(t)+99*S(b),540+99*C(t)+(250+99*C(b))*S(d),3,3)

Oct 24 2017 8:15 PM UTC

}// 140/140

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Rolling donut

u/magna

Awesome!
u/lionleaf

#donut

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lurifax

function u(t) {

t?0:W=[540];for(i=w=c.width|=0;i--;i>1&&t?W[i]=W[i-i*2/w|0]:W[i]=W[(1+i)%w]+Math.random()*18-9,x.fillRect(i*4%w,W[i],4,2e3))x.globalAlpha=.1

Oct 20 2017 8:06 PM UTC

}// 140/140

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Cloudy mountains?

u/lurifax

First attempt at some parallax landscape, not quite right.

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lurifax

remix of d/3292 by u/artfarnaa

function u(t) {

for(c.width|=a=30;--a;x.fillStyle=`hsl(${S(t/9)*360},70%,70%`,x.arc(960+S(b=t+a*6)*54,540+C(b)*54,a*15,0,7))x.moveTo(0,0);x.fill('evenodd')

Oct 20 2017 6:42 PM UTC

}// 139/140

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u/artfarnaa

Nice. I wonder if it's possible to do multiple colors for each stripe?

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lurifax

function u(t) {

for(x[f='fillRect'](i=0,0,2e3,2e3);i++<(w=255);x.fillStyle=R(a=w*2-i*2,a/2,50,1.2-i%w/w))x[f](960-S(2*t+S(t+i))*i*3,540-C(t+i)*i*2,i/5,i/5)

Oct 7 2017 1:02 PM UTC

}// 139/140

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u/magna

WOW! Depth of field with just colours!
u/lionleaf

Stunning!
u/sigveseb

Radical!
u/sadropol

Lovely!
u/Galaxtone

It has that dancing ballerina effect
u/Galaxtone

is it going left or right?

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lurifax

remix of d/3221 by u/lurifax

function u(t) {

c.width|=0;for(j=361;--j;x.fillRect(960+500*S(d=j/56)*C(e=t+j%4*.785),540+500*C(d)*S(e),9,9))x.fillStyle=`hsl(${j},99%,50%`

Oct 3 2017 8:16 PM UTC

}// 123/140

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Fixed the annoying black dot in the original and golfed 17b :)

u/Xen

you can get it to 115b ;-)
u/lurifax

Oh, interesting! Hmm, can you give a hint Xen? :)
u/lurifax

Got in down to 116b, thanks for the encouragement Xen: for(c.width|=j=360;--j;x.fillRect(960+500*S(d=j/54)*C(e=t+j%3),540+500*C(d)*S(e),9,9))x.fillStyle=hsl(${j},99%,50%
u/lurifax

Still can't find the last byte though :)
u/joeytwiddle

Could j start off with a higher value? ;)

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lurifax

function u(t) {

w=c.width=64;for(d=t?d:[],i=0;i++<w*42;i<w*2?d[w*42-i]=666*Math.random():x.fillRect(i%w,i/w,2,2))x.fillStyle=R(z=d[i]=d[i+w+~~S(t)]*.9,z/2)

Oct 1 2017 7:50 PM UTC

}// 139/140

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Fire! Fire! Fire?

u/iverjo

#fire

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lurifax

function u(t) {

for(i=9,e=T(t)*99;--i;x.fillStyle=`hsl(${S(t)*180+180},99%,50%`)x.fillRect(S(d=i*.8+t)*e+960,C(d)*e+540,9,9);x.drawImage(c,-9,-9,1938,1098)

Sep 30 2017 4:07 PM UTC

}// 139/140

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u/Xen

my kind of dweet :D
u/donbright

part where it comes back in from the border is excellent

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lurifax

function u(t) {

c.width|=0;for(i=5;--i;)for(j=91;--j;x.fillStyle=`hsl(${j*4},99%,50%)`)x.fillRect(960+500*S(d=j*.0698)*C(e=t+i*.7853),540+500*C(d)*S(e),9,9)

Sep 30 2017 5:16 AM UTC

}// 140/140

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u/Xen

very nice
u/lurifax

Remix #3241- With fix for the annoying black dot and golfed 17b :)

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