Top dweets by u/xem

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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Current theme challenge: #ScaryMovies

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xem

remix of d/2050 by u/xem

function u(t) {

c.style=`background:radial-gradient(#FF0,red,blue,#fff 50%);transform:rotateX(${t*9}deg)rotateY(${t*99}deg)rotateZ(${t/5}rad)scale(${T(t)})`

Mar 11 2017 12:29 PM UTC

}// 140/140

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u/sfz

css masta!

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xem

remix of d/7490 by u/aemkei

function u(t) {

c.width^=0;x.font="90px arial";for(i=0;i<90;i++)for(j=0;j<90;j++)x.fillText([..."◜◝◟◞"][~~(Math.random()*4)],i*30,j*30)

Mar 27 2018 8:34 PM UTC

}// 119/140

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u/robbyg

Golfed down to 108 chars: https://www.dwitter.net/d/7507

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xem

remix of d/7471 by u/jylikangas

function u(t) {

A=r=>x.fill(x.arc(960+R*C(t),540+R*S(t),r,0,7))
f%2&&(t+=3)
x.beginPath(A(R=f%2?190:187))
x.fillStyle='#'+(f++%2?"fff":111)
A(50)}{f=0

Mar 26 2018 6:52 AM UTC

}// 134/140

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u/username

ah it is just shy from actual yin yang

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xem

function u(t) {

c.width^=0;for(i=0;i<10;i+=.5)for(j=0;j<10;j+=.5)x.arc(900+400*S((i+t/9)*3.14)*C(j*1.57),500+400*S(j*1.57),5,0,6);x.fill()

Oct 21 2017 7:12 AM UTC

}// 122/140

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This is totally not what I wanted to do :)

u/xem

Sphere<3
u/xem

(see remix https://www.dwitter.net/d/3325)
u/iverjo

#sphere

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xem

remix of d/3324 by u/xem

function u(t) {

for(c.width^=i=0;i<9;i+=.1)for(j=0;j<9;j+=.1)x.beginPath(),x.arc(900+400*S((i+t/9)*3)*C((j+t/5)*1.5),500+400*S((j+t/9)*1.5),5,0,6),x.fill()

Oct 21 2017 7:22 AM UTC

}// 139/140

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Sphere-<3

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xem

function u(t) {

for(n=.5,i=9e3;n=t/4*n*(1-n),i--;)i<300&&x.fillRect(t*99,1e3-n*1e3,2,2)

Jan 31 2020 4:44 PM UTC

}// 71/140

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Logistic map (to scale)

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xem

function u(t) {

c.width^=0
if(!t){B=[],X=Y=0}
c.onmousemove=e=>B.push([e.x-X,e.y-Y,X=e.x,Y=e.y])
for(i of B)x.arc(i[2]+=i[0],i[3]+=i[1],9,0,7)
x.stroke()

Mar 21 2018 8:26 PM UTC

}// 137/140

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The mouse throws projectiles (works better in fullscreen)

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xem

remix of d/3325 by u/xem

function u(t) {

for(i=0;i<65;i++)for(j=0;j<65;j++)x.fillStyle=R(i*9,j*9,C(t)*99),x.fillRect(900+400*S((i+t/9)*3)*C((j+t/9)*1.5),500+400*S((j+t/9)*1.5),5,5)

Oct 21 2017 9:43 AM UTC

}// 139/140

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Some kind of Jupiter-y, Easter-egg-y thing?

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xem

function u(t) {

c.style='background:radial-gradient(red,blue);position:absolute;transform:rotateX('+t*99+'deg)rotateY('+t*50+'deg)rotateZ('+t*10+'deg)';

Mar 11 2017 11:13 AM UTC

}// 136/140

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#thinkoutsidethecanvas

u/hypothete

Definitely a lot terser than gradients in the canvas. Color stop stuff gets wordy.

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xem

function u(t) {

x.font="99px a";
for(i=999;i--;)x.fillText("🕷",1870/2+C(i+t)*t*9*3/i+9*Math.random(),1030/2+S(i+t)*t*9*3/i+9*Math.random())

Dec 31 2017 10:37 AM UTC

}// 123/140

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Cobweb challenge entry :p

dwitter.net | xem (226)