Dweets awesomed by u/sawaxon

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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Run

function u(t) {

c.width*=1;
for(i=0;i<1550;i++){
x.fillRect(X=i+S(t+i)*300,400+200*C(t+i)+200*S(X/300+t),50,50);x.fillStyle=`hsl(`+(X/7+t*30)+`,80%,50%)`;}

Mar 2 2017 6:42 PM UTC

}// 139/140

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More of the tubes of the internet.

u/sfz

shwank

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ivansanchez

function u(t) {

w=c.width+=0;x.fillRect(0,0,w,w);for(i=0;i<1000;i+=3)x.fillStyle='#a'+(~~(i*99)%0xff),x.fillRect(w+(t*(-S(i)+C(i))*5e3)%w,i,200/S(i),3)

Mar 2 2017 5:56 PM UTC

}// 135/140

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u/iverjo

#bartjs
u/sfz

go speed racer go!

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Run

function u(t) {

c.width*=1;
for(i=0;i<32;i++){
x.fillRect(X=-400+i*100+S(t+i)*300, 400 + 90*C(t+i), 50, 200);
x.fillStyle=`hsl(`+(X/20+t*20)+`,80%,50%)`;
}

Mar 2 2017 5:51 PM UTC

}// 139/140

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#bartjs

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SpecialAgent

function u(t) {

c.width^=0;r=400;A=[.4,.7,1,1.5,1,2,4,7];for(n=4;n--,q=r*A[n],d=t/A[n+4];)x.arc(r*2,r,q,1,9),x.stroke(),x.fillRect(r*2+q*C(d),r+q*S(d),9,9)

Mar 2 2017 10:55 AM UTC

}// 139/140

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Illustrates the orbits of the first 4 planets in our solar system. The distance from the sun (not shown but expected in the center) and the orbital periods are to approximate scale. Variable A holds the planetary data, positions 0-3 indicate the distance in Astronomical Units from the sun, positions 4-7 the number of days for orbital periods. These are rounded to fit into the 140 byte limit. Earth should be 3.65, but is rounded up to 4. Not perfect but a close approximation. q is the radius of each orbit (derived from the AU distance), and d is the angle of the planet on the orbital path (derived from the days per orbital period).

u/donbright

hell yeah
u/donbright

remix to show e-v orbital resonance https://www.dwitter.net/d/1811
u/donbright

i wish i could vote twice on SpecialAgent's dweet, so cool.
u/SpecialAgent

Thank you donbright :)
u/SpecialAgent

A golfed version that tunes earth's orbital period to 360 days, and speeds up the simulation: c.width^=0;r=600;for(n=4;n--,q=r*[.2,.3,.5,.75][n],d=t*2/[1,2,3.6,7][n];)x.arc(r,r,q,1,9),x.stroke(),x.fillRect(r+q*C(d),r+q*S(d),9,9)

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jcyl

function u(t) {

c.height=1080;
for(i=0;i<30;i++){
x.fillRect((S(t*i)*60)+960,(20*i)+200, 4, 4)
x.drawImage(c,t,t,1920,1080)
}

Mar 2 2017 12:17 AM UTC

}// 109/140

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sawaxon

function u(t) {

c.width|=0;x.font="160px Monaco";h=new Date()+''.split('017')[0]+'017'
for(i=0;i<15;i++)x.fillText(h[i],99+i*110+C(t),500+T(t*S(i))*40,500)

Mar 1 2017 11:46 PM UTC

}// 139/140

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u/sigveseb

Would make a neat calendar to hang on a wall

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sawaxon

function u(t) {

c.width=1980;x.font="120px Monaco";h="Javascript is Awesome!"
for(i=0;i<22;i++)x.fillText(h[i],100+i*70+C(t),500+T(t*S(i))*40,500)

Mar 1 2017 11:31 PM UTC

}// 130/140

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u/SpecialAgent

That it is

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sortie

function u(t) {

for(X=1920;X--;x.fillStyle=R(8*n),x.fillRect(X,t*60,1,1))for(C=A=X/960-1.5,D=B=t/9-1,n=0;n<32&C*C+D*D<4;n++)E=C*C-D*D+A,D=2*C*D+B,C=E

Mar 1 2017 10:43 PM UTC

}// 133/140

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u/SpecialAgent

Nice fractal!
u/hamptonio

Very nice using the time more internally, this is much faster than others I've modified.
u/vonzo

wow
u/katkip

Wow! This #fractal looks awesome

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sawaxon

function u(t) {

c.width|=0
for(j=1;j<14;j++)for(i=1;i<40*j;i++)x.fillRect(900+C(t+i/4)*80*j*0.7,500+T(t+C(i))*40*j*0.7,4,4)

Mar 1 2017 9:07 PM UTC

}// 107/140

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sawaxon

remix of d/1705 by u/sawaxon

function u(t) {

c.width|=0
for(j=1;j<11;j++)for(i=1;i<40*j;i++)x.fillRect(900+T(t+i/4)*80*j,500+T(t+S(i))*40*j,4,4)

Mar 1 2017 9:04 PM UTC

}// 99/140

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dwitter.net | sawaxon (8048)